iss.c revision ea72717e961d1166882370a87876bfeacc967eb0
159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * TI OMAP4 ISS V4L2 Driver
359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Copyright (C) 2012, Texas Instruments
559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * This program is free software; you can redistribute it and/or modify
959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * it under the terms of the GNU General Public License as published by
1059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * the Free Software Foundation; either version 2 of the License, or
1159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * (at your option) any later version.
1259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
1359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
1459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/clk.h>
1559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/delay.h>
1659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/device.h>
1759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/dma-mapping.h>
1859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/i2c.h>
1959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/interrupt.h>
2059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/module.h>
2159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/platform_device.h>
2259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/slab.h>
2359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/sched.h>
2459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <linux/vmalloc.h>
2559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
2659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <media/v4l2-common.h>
2759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <media/v4l2-device.h>
2859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include <media/v4l2-ctrls.h>
2959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
3059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include "iss.h"
3159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#include "iss_regs.h"
3259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
3359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#define ISS_PRINT_REGISTER(iss, name)\
3459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	dev_dbg(iss->dev, "###ISS " #name "=0x%08x\n", \
3559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		readl(iss->regs[OMAP4_ISS_MEM_TOP] + ISS_##name))
3659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
3759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic void iss_print_status(struct iss_device *iss)
3859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
3959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	dev_dbg(iss->dev, "-------------ISS HL Register dump-------------\n");
4059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
4159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ISS_PRINT_REGISTER(iss, HL_REVISION);
4259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ISS_PRINT_REGISTER(iss, HL_SYSCONFIG);
4359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ISS_PRINT_REGISTER(iss, HL_IRQSTATUS_5);
4459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ISS_PRINT_REGISTER(iss, HL_IRQENABLE_5_SET);
4559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ISS_PRINT_REGISTER(iss, HL_IRQENABLE_5_CLR);
4659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ISS_PRINT_REGISTER(iss, CTRL);
4759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ISS_PRINT_REGISTER(iss, CLKCTRL);
4859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ISS_PRINT_REGISTER(iss, CLKSTAT);
4959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
5059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	dev_dbg(iss->dev, "-----------------------------------------------\n");
5159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
5259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
5359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
5459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * omap4iss_flush - Post pending L3 bus writes by doing a register readback
5559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @iss: OMAP4 ISS device
5659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
5759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * In order to force posting of pending writes, we need to write and
5859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * readback the same register, in this case the revision register.
5959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
6059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * See this link for reference:
6159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *   http://www.mail-archive.com/linux-omap@vger.kernel.org/msg08149.html
6259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
6359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrevoid omap4iss_flush(struct iss_device *iss)
6459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
6559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(0, iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_REVISION);
6659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	readl(iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_REVISION);
6759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
6859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
6959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
7059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_enable_interrupts - Enable ISS interrupts.
7159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @iss: OMAP4 ISS device
7259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
7359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic void iss_enable_interrupts(struct iss_device *iss)
7459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
7559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	static const u32 hl_irq = ISS_HL_IRQ_CSIA | ISS_HL_IRQ_CSIB | ISS_HL_IRQ_ISP(0);
7659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
7759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Enable HL interrupts */
7859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(hl_irq, iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_IRQSTATUS_5);
7959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(hl_irq, iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_IRQENABLE_5_SET);
8059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
8159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
8259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
8359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
8459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_disable_interrupts - Disable ISS interrupts.
8559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @iss: OMAP4 ISS device
8659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
8759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic void iss_disable_interrupts(struct iss_device *iss)
8859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
8959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(-1, iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_IRQENABLE_5_CLR);
9059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
9159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
9259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
9359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_isp_enable_interrupts - Enable ISS ISP interrupts.
9459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @iss: OMAP4 ISS device
9559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
9659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrevoid omap4iss_isp_enable_interrupts(struct iss_device *iss)
9759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
9859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	static const u32 isp_irq = ISP5_IRQ_OCP_ERR |
9959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				   ISP5_IRQ_RSZ_FIFO_IN_BLK |
10059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				   ISP5_IRQ_RSZ_FIFO_OVF |
10159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				   ISP5_IRQ_RSZ_INT_DMA |
10259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				   ISP5_IRQ_ISIF0;
10359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
10459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Enable ISP interrupts */
10559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(isp_irq, iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_IRQSTATUS(0));
10659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(isp_irq, iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_IRQENABLE_SET(0));
10759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
10859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
10959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
11059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_isp_disable_interrupts - Disable ISS interrupts.
11159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @iss: OMAP4 ISS device
11259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
11359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrevoid omap4iss_isp_disable_interrupts(struct iss_device *iss)
11459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
11559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(-1, iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_IRQENABLE_CLR(0));
11659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
11759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
11859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreint omap4iss_get_external_info(struct iss_pipeline *pipe,
11959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			       struct media_link *link)
12059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
12159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_device *iss =
12259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		container_of(pipe, struct iss_video, pipe)->iss;
12359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct v4l2_subdev_format fmt;
124ea72717e961d1166882370a87876bfeacc967eb0Laurent Pinchart	struct v4l2_ctrl *ctrl;
12559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int ret;
12659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
12759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!pipe->external)
12859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 0;
12959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
13059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (pipe->external_rate)
13159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 0;
13259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
13359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	memset(&fmt, 0, sizeof(fmt));
13459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
13559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	fmt.pad = link->source->index;
13659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
13759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = v4l2_subdev_call(media_entity_to_v4l2_subdev(link->sink->entity),
13859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			       pad, get_fmt, NULL, &fmt);
13959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
14059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return -EPIPE;
14159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
14259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	pipe->external_bpp = omap4iss_video_format_info(fmt.format.code)->bpp;
14359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
144ea72717e961d1166882370a87876bfeacc967eb0Laurent Pinchart	ctrl = v4l2_ctrl_find(pipe->external->ctrl_handler,
145ea72717e961d1166882370a87876bfeacc967eb0Laurent Pinchart			      V4L2_CID_PIXEL_RATE);
146ea72717e961d1166882370a87876bfeacc967eb0Laurent Pinchart	if (ctrl == NULL) {
14759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_warn(iss->dev, "no pixel rate control in subdev %s\n",
14859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			 pipe->external->name);
149ea72717e961d1166882370a87876bfeacc967eb0Laurent Pinchart		return -EPIPE;
15059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
15159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
152ea72717e961d1166882370a87876bfeacc967eb0Laurent Pinchart	pipe->external_rate = v4l2_ctrl_g_ctrl_int64(ctrl);
15359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
15459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
15559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
15659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
15759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
15859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Configure the bridge. Valid inputs are
15959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
16059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * IPIPEIF_INPUT_CSI2A: CSI2a receiver
16159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * IPIPEIF_INPUT_CSI2B: CSI2b receiver
16259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
16359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * The bridge and lane shifter are configured according to the selected input
16459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * and the ISP platform data.
16559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
16659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrevoid omap4iss_configure_bridge(struct iss_device *iss,
16759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			       enum ipipeif_input_entity input)
16859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
16959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	u32 issctrl_val;
17059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	u32 isp5ctrl_val;
17159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
17259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	issctrl_val  = readl(iss->regs[OMAP4_ISS_MEM_TOP] + ISS_CTRL);
17359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	issctrl_val &= ~ISS_CTRL_INPUT_SEL_MASK;
17459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	issctrl_val &= ~ISS_CTRL_CLK_DIV_MASK;
17559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
17659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	isp5ctrl_val  = readl(iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_CTRL);
17759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
17859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	switch (input) {
17959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	case IPIPEIF_INPUT_CSI2A:
18059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		issctrl_val |= ISS_CTRL_INPUT_SEL_CSI2A;
18159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		isp5ctrl_val |= ISP5_CTRL_VD_PULSE_EXT;
18259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		break;
18359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
18459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	case IPIPEIF_INPUT_CSI2B:
18559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		issctrl_val |= ISS_CTRL_INPUT_SEL_CSI2B;
18659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		isp5ctrl_val |= ISP5_CTRL_VD_PULSE_EXT;
18759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		break;
18859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
18959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	default:
19059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return;
19159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
19259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
19359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	issctrl_val |= ISS_CTRL_SYNC_DETECT_VS_RAISING;
19459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
19559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	isp5ctrl_val |= ISP5_CTRL_PSYNC_CLK_SEL | ISP5_CTRL_SYNC_ENABLE;
19659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
19759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(issctrl_val, iss->regs[OMAP4_ISS_MEM_TOP] + ISS_CTRL);
19859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(isp5ctrl_val, iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_CTRL);
19959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
20059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
20159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic inline void iss_isr_dbg(struct iss_device *iss, u32 irqstatus)
20259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
20359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	static const char *name[] = {
20459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"ISP_IRQ0",
20559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"ISP_IRQ1",
20659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"ISP_IRQ2",
20759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"ISP_IRQ3",
20859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"CSIA_IRQ",
20959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"CSIB_IRQ",
21059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"CCP2_IRQ0",
21159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"CCP2_IRQ1",
21259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"CCP2_IRQ2",
21359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"CCP2_IRQ3",
21459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"CBUFF_IRQ",
21559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"BTE_IRQ",
21659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"SIMCOP_IRQ0",
21759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"SIMCOP_IRQ1",
21859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"SIMCOP_IRQ2",
21959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"SIMCOP_IRQ3",
22059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"CCP2_IRQ8",
22159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"HS_VS_IRQ",
22259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res18",
22359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res19",
22459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res20",
22559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res21",
22659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res22",
22759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res23",
22859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res24",
22959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res25",
23059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res26",
23159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res27",
23259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res28",
23359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res29",
23459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res30",
23559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		"res31",
23659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	};
23759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int i;
23859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
23959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	dev_dbg(iss->dev, "ISS IRQ: ");
24059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
24159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	for (i = 0; i < ARRAY_SIZE(name); i++) {
24259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if ((1 << i) & irqstatus)
24359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			pr_cont("%s ", name[i]);
24459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
24559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	pr_cont("\n");
24659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
24759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
24859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
24959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_isr - Interrupt Service Routine for ISS module.
25059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @irq: Not used currently.
25159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @_iss: Pointer to the OMAP4 ISS device
25259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
25359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Handles the corresponding callback if plugged in.
25459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
25559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Returns IRQ_HANDLED when IRQ was correctly handled, or IRQ_NONE when the
25659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * IRQ wasn't handled.
25759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
25859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic irqreturn_t iss_isr(int irq, void *_iss)
25959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
26059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	static const u32 ipipeif_events = ISP5_IRQ_IPIPEIF |
26159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre					  ISP5_IRQ_ISIF0;
26259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	static const u32 resizer_events = ISP5_IRQ_RSZ_FIFO_IN_BLK |
26359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre					  ISP5_IRQ_RSZ_FIFO_OVF |
26459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre					  ISP5_IRQ_RSZ_INT_DMA;
26559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_device *iss = _iss;
26659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	u32 irqstatus;
26759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
26859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	irqstatus = readl(iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_IRQSTATUS_5);
26959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(irqstatus, iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_IRQSTATUS_5);
27059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
27159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (irqstatus & ISS_HL_IRQ_CSIA)
27259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		omap4iss_csi2_isr(&iss->csi2a);
27359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
27459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (irqstatus & ISS_HL_IRQ_CSIB)
27559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		omap4iss_csi2_isr(&iss->csi2b);
27659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
27759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (irqstatus & ISS_HL_IRQ_ISP(0)) {
27859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		u32 isp_irqstatus = readl(iss->regs[OMAP4_ISS_MEM_ISP_SYS1] +
27959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre					  ISP5_IRQSTATUS(0));
28059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		writel(isp_irqstatus, iss->regs[OMAP4_ISS_MEM_ISP_SYS1] +
28159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			ISP5_IRQSTATUS(0));
28259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
28359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (isp_irqstatus & ISP5_IRQ_OCP_ERR)
28459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			dev_dbg(iss->dev, "ISP5 OCP Error!\n");
28559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
28659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (isp_irqstatus & ipipeif_events) {
28759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			omap4iss_ipipeif_isr(&iss->ipipeif,
28859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre					     isp_irqstatus & ipipeif_events);
28959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
29059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
29159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (isp_irqstatus & resizer_events)
29259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			omap4iss_resizer_isr(&iss->resizer,
29359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre					     isp_irqstatus & resizer_events);
29459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
29559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
29659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_flush(iss);
29759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
29859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#if defined(DEBUG) && defined(ISS_ISR_DEBUG)
29959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss_isr_dbg(iss, irqstatus);
30059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#endif
30159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
30259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return IRQ_HANDLED;
30359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
30459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
30559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/* -----------------------------------------------------------------------------
30659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Pipeline power management
30759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
30859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Entities must be powered up when part of a pipeline that contains at least
30959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * one open video device node.
31059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
31159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * To achieve this use the entity use_count field to track the number of users.
31259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * For entities corresponding to video device nodes the use_count field stores
31359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * the users count of the node. For entities corresponding to subdevs the
31459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * use_count field stores the total number of users of all video device nodes
31559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * in the pipeline.
31659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
31759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * The omap4iss_pipeline_pm_use() function must be called in the open() and
31859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * close() handlers of video device nodes. It increments or decrements the use
31959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * count of all subdev entities in the pipeline.
32059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
32159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * To react to link management on powered pipelines, the link setup notification
32259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * callback updates the use count of all entities in the source and sink sides
32359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * of the link.
32459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
32559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
32659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
32759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_pipeline_pm_use_count - Count the number of users of a pipeline
32859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @entity: The entity
32959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
33059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Return the total number of users of all video device nodes in the pipeline.
33159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
33259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_pipeline_pm_use_count(struct media_entity *entity)
33359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
33459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct media_entity_graph graph;
33559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int use = 0;
33659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
33759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	media_entity_graph_walk_start(&graph, entity);
33859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
33959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	while ((entity = media_entity_graph_walk_next(&graph))) {
34059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (media_entity_type(entity) == MEDIA_ENT_T_DEVNODE)
34159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			use += entity->use_count;
34259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
34359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
34459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return use;
34559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
34659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
34759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
34859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_pipeline_pm_power_one - Apply power change to an entity
34959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @entity: The entity
35059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @change: Use count change
35159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
35259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Change the entity use count by @change. If the entity is a subdev update its
35359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * power state by calling the core::s_power operation when the use count goes
35459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * from 0 to != 0 or from != 0 to 0.
35559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
35659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Return 0 on success or a negative error code on failure.
35759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
35859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_pipeline_pm_power_one(struct media_entity *entity, int change)
35959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
36059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct v4l2_subdev *subdev;
36159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
36259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	subdev = media_entity_type(entity) == MEDIA_ENT_T_V4L2_SUBDEV
36359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	       ? media_entity_to_v4l2_subdev(entity) : NULL;
36459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
36559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (entity->use_count == 0 && change > 0 && subdev != NULL) {
36659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		int ret;
36759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
36859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = v4l2_subdev_call(subdev, core, s_power, 1);
36959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (ret < 0 && ret != -ENOIOCTLCMD)
37059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			return ret;
37159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
37259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
37359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	entity->use_count += change;
37459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	WARN_ON(entity->use_count < 0);
37559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
37659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (entity->use_count == 0 && change < 0 && subdev != NULL)
37759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		v4l2_subdev_call(subdev, core, s_power, 0);
37859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
37959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
38059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
38159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
38259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
38359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_pipeline_pm_power - Apply power change to all entities in a pipeline
38459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @entity: The entity
38559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @change: Use count change
38659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
38759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Walk the pipeline to update the use count and the power state of all non-node
38859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * entities.
38959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
39059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Return 0 on success or a negative error code on failure.
39159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
39259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_pipeline_pm_power(struct media_entity *entity, int change)
39359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
39459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct media_entity_graph graph;
39559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct media_entity *first = entity;
39659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int ret = 0;
39759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
39859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!change)
39959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 0;
40059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
40159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	media_entity_graph_walk_start(&graph, entity);
40259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
40359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	while (!ret && (entity = media_entity_graph_walk_next(&graph)))
40459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (media_entity_type(entity) != MEDIA_ENT_T_DEVNODE)
40559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			ret = iss_pipeline_pm_power_one(entity, change);
40659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
40759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!ret)
40859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 0;
40959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
41059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	media_entity_graph_walk_start(&graph, first);
41159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
41259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	while ((first = media_entity_graph_walk_next(&graph))
41359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	       && first != entity)
41459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (media_entity_type(first) != MEDIA_ENT_T_DEVNODE)
41559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			iss_pipeline_pm_power_one(first, -change);
41659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
41759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return ret;
41859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
41959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
42059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
42159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * omap4iss_pipeline_pm_use - Update the use count of an entity
42259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @entity: The entity
42359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @use: Use (1) or stop using (0) the entity
42459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
42559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Update the use count of all entities in the pipeline and power entities on or
42659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * off accordingly.
42759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
42859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Return 0 on success or a negative error code on failure. Powering entities
42959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * off is assumed to never fail. No failure can occur when the use parameter is
43059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * set to 0.
43159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
43259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreint omap4iss_pipeline_pm_use(struct media_entity *entity, int use)
43359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
43459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int change = use ? 1 : -1;
43559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int ret;
43659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
43759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	mutex_lock(&entity->parent->graph_mutex);
43859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
43959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Apply use count to node. */
44059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	entity->use_count += change;
44159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	WARN_ON(entity->use_count < 0);
44259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
44359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Apply power change to connected non-nodes. */
44459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = iss_pipeline_pm_power(entity, change);
44559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
44659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		entity->use_count -= change;
44759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
44859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	mutex_unlock(&entity->parent->graph_mutex);
44959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
45059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return ret;
45159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
45259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
45359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
45459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_pipeline_link_notify - Link management notification callback
45559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @link: The link
45659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @flags: New link flags that will be applied
45759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
45859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * React to link management on powered pipelines by updating the use count of
45959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * all entities in the source and sink sides of the link. Entities are powered
46059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * on or off accordingly.
46159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
46259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Return 0 on success or a negative error code on failure. Powering entities
46359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * off is assumed to never fail. This function will not fail for disconnection
46459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * events.
46559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
46659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_pipeline_link_notify(struct media_link *link, u32 flags,
46759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				    unsigned int notification)
46859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
46959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct media_entity *source = link->source->entity;
47059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct media_entity *sink = link->sink->entity;
47159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int source_use = iss_pipeline_pm_use_count(source);
47259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int sink_use = iss_pipeline_pm_use_count(sink);
47359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int ret;
47459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
47559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH &&
47659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	    !(link->flags & MEDIA_LNK_FL_ENABLED)) {
47759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		/* Powering off entities is assumed to never fail. */
47859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss_pipeline_pm_power(source, -sink_use);
47959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss_pipeline_pm_power(sink, -source_use);
48059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 0;
48159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
48259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
48359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (notification == MEDIA_DEV_NOTIFY_POST_LINK_CH &&
48459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		(flags & MEDIA_LNK_FL_ENABLED)) {
48559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = iss_pipeline_pm_power(source, sink_use);
48659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (ret < 0)
48759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			return ret;
48859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
48959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = iss_pipeline_pm_power(sink, source_use);
49059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (ret < 0)
49159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			iss_pipeline_pm_power(source, -sink_use);
49259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
49359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return ret;
49459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
49559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
49659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
49759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
49859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
49959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/* -----------------------------------------------------------------------------
50059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Pipeline stream management
50159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
50259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
50359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
50459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_pipeline_enable - Enable streaming on a pipeline
50559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @pipe: ISS pipeline
50659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @mode: Stream mode (single shot or continuous)
50759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
50859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Walk the entities chain starting at the pipeline output video node and start
50959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * all modules in the chain in the given mode.
51059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
51159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Return 0 if successful, or the return value of the failed video::s_stream
51259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * operation otherwise.
51359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
51459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_pipeline_enable(struct iss_pipeline *pipe,
51559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			       enum iss_pipeline_stream_state mode)
51659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
51759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct media_entity *entity;
51859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct media_pad *pad;
51959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct v4l2_subdev *subdev;
52059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	unsigned long flags;
52159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int ret;
52259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
52359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	spin_lock_irqsave(&pipe->lock, flags);
52459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	pipe->state &= ~(ISS_PIPELINE_IDLE_INPUT | ISS_PIPELINE_IDLE_OUTPUT);
52559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	spin_unlock_irqrestore(&pipe->lock, flags);
52659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
52759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	pipe->do_propagation = false;
52859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
52959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	entity = &pipe->output->video.entity;
53059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	while (1) {
53159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		pad = &entity->pads[0];
53259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (!(pad->flags & MEDIA_PAD_FL_SINK))
53359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			break;
53459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
53559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		pad = media_entity_remote_pad(pad);
53659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (pad == NULL ||
53759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
53859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			break;
53959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
54059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		entity = pad->entity;
54159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		subdev = media_entity_to_v4l2_subdev(entity);
54259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
54359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = v4l2_subdev_call(subdev, video, s_stream, mode);
54459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (ret < 0 && ret != -ENOIOCTLCMD)
54559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			return ret;
54659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
54759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss_print_status(pipe->output->iss);
54859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
54959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
55059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
55159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
55259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_pipeline_disable - Disable streaming on a pipeline
55359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @pipe: ISS pipeline
55459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
55559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Walk the entities chain starting at the pipeline output video node and stop
55659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * all modules in the chain. Wait synchronously for the modules to be stopped if
55759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * necessary.
55859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
55959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_pipeline_disable(struct iss_pipeline *pipe)
56059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
56159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct media_entity *entity;
56259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct media_pad *pad;
56359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct v4l2_subdev *subdev;
56459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int failure = 0;
56559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
56659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	entity = &pipe->output->video.entity;
56759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	while (1) {
56859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		pad = &entity->pads[0];
56959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (!(pad->flags & MEDIA_PAD_FL_SINK))
57059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			break;
57159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
57259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		pad = media_entity_remote_pad(pad);
57359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (pad == NULL ||
57459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		    media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV)
57559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			break;
57659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
57759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		entity = pad->entity;
57859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		subdev = media_entity_to_v4l2_subdev(entity);
57959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
58059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		v4l2_subdev_call(subdev, video, s_stream, 0);
58159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
58259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
58359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return failure;
58459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
58559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
58659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
58759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * omap4iss_pipeline_set_stream - Enable/disable streaming on a pipeline
58859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @pipe: ISS pipeline
58959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @state: Stream state (stopped, single shot or continuous)
59059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
59159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Set the pipeline to the given stream state. Pipelines can be started in
59259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * single-shot or continuous mode.
59359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
59459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Return 0 if successful, or the return value of the failed video::s_stream
59559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * operation otherwise. The pipeline state is not updated when the operation
59659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * fails, except when stopping the pipeline.
59759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
59859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreint omap4iss_pipeline_set_stream(struct iss_pipeline *pipe,
59959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				 enum iss_pipeline_stream_state state)
60059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
60159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int ret;
60259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
60359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (state == ISS_PIPELINE_STREAM_STOPPED)
60459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = iss_pipeline_disable(pipe);
60559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	else
60659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = iss_pipeline_enable(pipe, state);
60759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
60859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret == 0 || state == ISS_PIPELINE_STREAM_STOPPED)
60959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		pipe->stream_state = state;
61059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
61159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return ret;
61259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
61359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
61459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
61559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_pipeline_is_last - Verify if entity has an enabled link to the output
61659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *			  video node
61759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @me: ISS module's media entity
61859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
61959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Returns 1 if the entity has an enabled link to the output video node or 0
62059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * otherwise. It's true only while pipeline can have no more than one output
62159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * node.
62259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
62359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_pipeline_is_last(struct media_entity *me)
62459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
62559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_pipeline *pipe;
62659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct media_pad *pad;
62759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
62859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!me->pipe)
62959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 0;
63059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	pipe = to_iss_pipeline(me);
63159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (pipe->stream_state == ISS_PIPELINE_STREAM_STOPPED)
63259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 0;
63359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	pad = media_entity_remote_pad(&pipe->output->pad);
63459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return pad->entity == me;
63559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
63659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
63759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_reset(struct iss_device *iss)
63859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
63959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	unsigned long timeout = 0;
64059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
64159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(readl(iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_SYSCONFIG) |
64259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ISS_HL_SYSCONFIG_SOFTRESET,
64359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_SYSCONFIG);
64459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
64559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	while (readl(iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_SYSCONFIG) &
64659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			ISS_HL_SYSCONFIG_SOFTRESET) {
64759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (timeout++ > 10000) {
64859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			dev_alert(iss->dev, "cannot reset ISS\n");
64959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			return -ETIMEDOUT;
65059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
65159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		udelay(1);
65259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
65359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
65459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
65559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
65659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
65759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_isp_reset(struct iss_device *iss)
65859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
65959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	unsigned long timeout = 0;
66059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
66159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Fist, ensure that the ISP is IDLE (no transactions happening) */
66259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel((readl(iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_SYSCONFIG) &
66359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		~ISP5_SYSCONFIG_STANDBYMODE_MASK) |
66459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ISP5_SYSCONFIG_STANDBYMODE_SMART,
66559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_SYSCONFIG);
66659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
66759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(readl(iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_CTRL) |
66859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ISP5_CTRL_MSTANDBY,
66959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_CTRL);
67059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
67159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	for (;;) {
67259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (readl(iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_CTRL) &
67359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				ISP5_CTRL_MSTANDBY_WAIT)
67459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			break;
67559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (timeout++ > 1000) {
67659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			dev_alert(iss->dev, "cannot set ISP5 to standby\n");
67759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			return -ETIMEDOUT;
67859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
67959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		msleep(1);
68059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
68159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
68259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Now finally, do the reset */
68359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel(readl(iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_SYSCONFIG) |
68459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ISP5_SYSCONFIG_SOFTRESET,
68559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_SYSCONFIG);
68659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
68759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	timeout = 0;
68859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	while (readl(iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_SYSCONFIG) &
68959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			ISP5_SYSCONFIG_SOFTRESET) {
69059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (timeout++ > 1000) {
69159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			dev_alert(iss->dev, "cannot reset ISP5\n");
69259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			return -ETIMEDOUT;
69359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
69459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		msleep(1);
69559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
69659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
69759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
69859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
69959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
70059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
70159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_module_sync_idle - Helper to sync module with its idle state
70259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @me: ISS submodule's media entity
70359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @wait: ISS submodule's wait queue for streamoff/interrupt synchronization
70459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @stopping: flag which tells module wants to stop
70559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
70659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * This function checks if ISS submodule needs to wait for next interrupt. If
70759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * yes, makes the caller to sleep while waiting for such event.
70859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
70959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreint omap4iss_module_sync_idle(struct media_entity *me, wait_queue_head_t *wait,
71059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			      atomic_t *stopping)
71159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
71259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_pipeline *pipe = to_iss_pipeline(me);
71359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_video *video = pipe->output;
71459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	unsigned long flags;
71559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
71659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (pipe->stream_state == ISS_PIPELINE_STREAM_STOPPED ||
71759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	    (pipe->stream_state == ISS_PIPELINE_STREAM_SINGLESHOT &&
71859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	     !iss_pipeline_ready(pipe)))
71959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 0;
72059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
72159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/*
72259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 * atomic_set() doesn't include memory barrier on ARM platform for SMP
72359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 * scenario. We'll call it here to avoid race conditions.
72459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 */
72559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	atomic_set(stopping, 1);
72659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	smp_wmb();
72759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
72859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/*
72959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 * If module is the last one, it's writing to memory. In this case,
73059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 * it's necessary to check if the module is already paused due to
73159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 * DMA queue underrun or if it has to wait for next interrupt to be
73259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 * idle.
73359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 * If it isn't the last one, the function won't sleep but *stopping
73459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 * will still be set to warn next submodule caller's interrupt the
73559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 * module wants to be idle.
73659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	 */
73759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!iss_pipeline_is_last(me))
73859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 0;
73959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
74059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	spin_lock_irqsave(&video->qlock, flags);
74159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (video->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_UNDERRUN) {
74259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		spin_unlock_irqrestore(&video->qlock, flags);
74359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		atomic_set(stopping, 0);
74459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		smp_wmb();
74559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 0;
74659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
74759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	spin_unlock_irqrestore(&video->qlock, flags);
74859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!wait_event_timeout(*wait, !atomic_read(stopping),
74959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				msecs_to_jiffies(1000))) {
75059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		atomic_set(stopping, 0);
75159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		smp_wmb();
75259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return -ETIMEDOUT;
75359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
75459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
75559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
75659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
75759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
75859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
75959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * omap4iss_module_sync_is_stopped - Helper to verify if module was stopping
76059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @wait: ISS submodule's wait queue for streamoff/interrupt synchronization
76159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @stopping: flag which tells module wants to stop
76259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
76359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * This function checks if ISS submodule was stopping. In case of yes, it
76459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * notices the caller by setting stopping to 0 and waking up the wait queue.
76559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Returns 1 if it was stopping or 0 otherwise.
76659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
76759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreint omap4iss_module_sync_is_stopping(wait_queue_head_t *wait,
76859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				     atomic_t *stopping)
76959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
77059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (atomic_cmpxchg(stopping, 1, 0)) {
77159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		wake_up(wait);
77259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return 1;
77359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
77459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
77559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
77659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
77759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
77859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/* --------------------------------------------------------------------------
77959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Clock management
78059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
78159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
78259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#define ISS_CLKCTRL_MASK	(ISS_CLKCTRL_CSI2_A |\
78359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				 ISS_CLKCTRL_CSI2_B |\
78459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				 ISS_CLKCTRL_ISP)
78559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
78659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int __iss_subclk_update(struct iss_device *iss)
78759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
78859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	u32 clk = 0;
78959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int ret = 0, timeout = 1000;
79059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
79159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->subclk_resources & OMAP4_ISS_SUBCLK_CSI2_A)
79259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk |= ISS_CLKCTRL_CSI2_A;
79359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
79459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->subclk_resources & OMAP4_ISS_SUBCLK_CSI2_B)
79559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk |= ISS_CLKCTRL_CSI2_B;
79659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
79759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->subclk_resources & OMAP4_ISS_SUBCLK_ISP)
79859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk |= ISS_CLKCTRL_ISP;
79959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
80059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel((readl(iss->regs[OMAP4_ISS_MEM_TOP] + ISS_CLKCTRL) &
80159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		~ISS_CLKCTRL_MASK) | clk,
80259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss->regs[OMAP4_ISS_MEM_TOP] + ISS_CLKCTRL);
80359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
80459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Wait for HW assertion */
80559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	while (--timeout > 0) {
80659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		udelay(1);
80759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if ((readl(iss->regs[OMAP4_ISS_MEM_TOP] + ISS_CLKSTAT) &
80859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		     ISS_CLKCTRL_MASK) == clk)
80959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			break;
81059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
81159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
81259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!timeout)
81359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = -EBUSY;
81459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
81559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return ret;
81659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
81759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
81859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreint omap4iss_subclk_enable(struct iss_device *iss,
81959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			    enum iss_subclk_resource res)
82059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
82159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->subclk_resources |= res;
82259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
82359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return __iss_subclk_update(iss);
82459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
82559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
82659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreint omap4iss_subclk_disable(struct iss_device *iss,
82759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			     enum iss_subclk_resource res)
82859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
82959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->subclk_resources &= ~res;
83059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
83159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return __iss_subclk_update(iss);
83259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
83359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
83459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre#define ISS_ISP5_CLKCTRL_MASK	(ISP5_CTRL_BL_CLK_ENABLE |\
83559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				 ISP5_CTRL_ISIF_CLK_ENABLE |\
83659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				 ISP5_CTRL_H3A_CLK_ENABLE |\
83759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				 ISP5_CTRL_RSZ_CLK_ENABLE |\
83859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				 ISP5_CTRL_IPIPE_CLK_ENABLE |\
83959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				 ISP5_CTRL_IPIPEIF_CLK_ENABLE)
84059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
84159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int __iss_isp_subclk_update(struct iss_device *iss)
84259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
84359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	u32 clk = 0;
84459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
84559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->isp_subclk_resources & OMAP4_ISS_ISP_SUBCLK_ISIF)
84659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk |= ISP5_CTRL_ISIF_CLK_ENABLE;
84759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
84859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->isp_subclk_resources & OMAP4_ISS_ISP_SUBCLK_H3A)
84959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk |= ISP5_CTRL_H3A_CLK_ENABLE;
85059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
85159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->isp_subclk_resources & OMAP4_ISS_ISP_SUBCLK_RSZ)
85259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk |= ISP5_CTRL_RSZ_CLK_ENABLE;
85359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
85459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->isp_subclk_resources & OMAP4_ISS_ISP_SUBCLK_IPIPE)
85559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk |= ISP5_CTRL_IPIPE_CLK_ENABLE;
85659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
85759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->isp_subclk_resources & OMAP4_ISS_ISP_SUBCLK_IPIPEIF)
85859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk |= ISP5_CTRL_IPIPEIF_CLK_ENABLE;
85959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
86059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (clk)
86159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk |= ISP5_CTRL_BL_CLK_ENABLE;
86259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
86359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel((readl(iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_CTRL) &
86459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		~ISS_ISP5_CLKCTRL_MASK) | clk,
86559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_CTRL);
86659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
86759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
86859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
86959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
87059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreint omap4iss_isp_subclk_enable(struct iss_device *iss,
87159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				enum iss_isp_subclk_resource res)
87259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
87359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->isp_subclk_resources |= res;
87459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
87559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return __iss_isp_subclk_update(iss);
87659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
87759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
87859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreint omap4iss_isp_subclk_disable(struct iss_device *iss,
87959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				enum iss_isp_subclk_resource res)
88059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
88159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->isp_subclk_resources &= ~res;
88259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
88359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return __iss_isp_subclk_update(iss);
88459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
88559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
88659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
88759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_enable_clocks - Enable ISS clocks
88859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @iss: OMAP4 ISS device
88959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
89059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Return 0 if successful, or clk_enable return value if any of tthem fails.
89159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
89259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_enable_clocks(struct iss_device *iss)
89359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
89459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int r;
89559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
89659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	r = clk_enable(iss->iss_fck);
89759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (r) {
89859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "clk_enable iss_fck failed\n");
89959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return r;
90059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
90159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
90259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	r = clk_enable(iss->iss_ctrlclk);
90359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (r) {
90459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "clk_enable iss_ctrlclk failed\n");
90559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto out_clk_enable_ctrlclk;
90659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
90759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
90859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
90959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreout_clk_enable_ctrlclk:
91059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	clk_disable(iss->iss_fck);
91159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return r;
91259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
91359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
91459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
91559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_disable_clocks - Disable ISS clocks
91659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @iss: OMAP4 ISS device
91759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
91859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic void iss_disable_clocks(struct iss_device *iss)
91959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
92059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	clk_disable(iss->iss_ctrlclk);
92159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	clk_disable(iss->iss_fck);
92259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
92359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
92459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic void iss_put_clocks(struct iss_device *iss)
92559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
92659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->iss_fck) {
92759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk_put(iss->iss_fck);
92859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss->iss_fck = NULL;
92959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
93059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
93159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->iss_ctrlclk) {
93259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		clk_put(iss->iss_ctrlclk);
93359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss->iss_ctrlclk = NULL;
93459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
93559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
93659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
93759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_get_clocks(struct iss_device *iss)
93859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
93959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->iss_fck = clk_get(iss->dev, "iss_fck");
94059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (IS_ERR(iss->iss_fck)) {
94159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "Unable to get iss_fck clock info\n");
94259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss_put_clocks(iss);
94359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return PTR_ERR(iss->iss_fck);
94459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
94559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
94659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->iss_ctrlclk = clk_get(iss->dev, "iss_ctrlclk");
94759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (IS_ERR(iss->iss_ctrlclk)) {
94859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "Unable to get iss_ctrlclk clock info\n");
94959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss_put_clocks(iss);
95059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return PTR_ERR(iss->iss_fck);
95159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
95259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
95359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
95459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
95559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
95659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
95759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * omap4iss_get - Acquire the ISS resource.
95859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
95959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Initializes the clocks for the first acquire.
96059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
96159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Increment the reference count on the ISS. If the first reference is taken,
96259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * enable clocks and power-up all submodules.
96359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
96459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Return a pointer to the ISS device structure, or NULL if an error occurred.
96559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
96659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestruct iss_device *omap4iss_get(struct iss_device *iss)
96759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
96859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_device *__iss = iss;
96959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
97059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss == NULL)
97159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return NULL;
97259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
97359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	mutex_lock(&iss->iss_mutex);
97459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->ref_count > 0)
97559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto out;
97659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
97759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss_enable_clocks(iss) < 0) {
97859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		__iss = NULL;
97959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto out;
98059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
98159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
98259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss_enable_interrupts(iss);
98359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
98459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreout:
98559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (__iss != NULL)
98659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss->ref_count++;
98759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	mutex_unlock(&iss->iss_mutex);
98859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
98959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return __iss;
99059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
99159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
99259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
99359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * omap4iss_put - Release the ISS
99459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
99559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Decrement the reference count on the ISS. If the last reference is released,
99659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * power-down all submodules, disable clocks and free temporary buffers.
99759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
99859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrevoid omap4iss_put(struct iss_device *iss)
99959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
100059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss == NULL)
100159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return;
100259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
100359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	mutex_lock(&iss->iss_mutex);
100459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	BUG_ON(iss->ref_count == 0);
100559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (--iss->ref_count == 0) {
100659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss_disable_interrupts(iss);
100759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss_disable_clocks(iss);
100859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
100959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	mutex_unlock(&iss->iss_mutex);
101059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
101159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
101259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_map_mem_resource(struct platform_device *pdev,
101359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				struct iss_device *iss,
101459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				enum iss_mem_resources res)
101559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
101659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct resource *mem;
101759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
101859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* request the mem region for the camera registers */
101959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
102059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	mem = platform_get_resource(pdev, IORESOURCE_MEM, res);
102159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!mem) {
102259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "no mem resource?\n");
102359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return -ENODEV;
102459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
102559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
102659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!request_mem_region(mem->start, resource_size(mem), pdev->name)) {
102759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev,
102859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			"cannot reserve camera register I/O region\n");
102959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return -ENODEV;
103059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
103159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->res[res] = mem;
103259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
103359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* map the region */
103459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->regs[res] = ioremap_nocache(mem->start, resource_size(mem));
103559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!iss->regs[res]) {
103659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "cannot map camera register I/O region\n");
103759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return -ENODEV;
103859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
103959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
104059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
104159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
104259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
104359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic void iss_unregister_entities(struct iss_device *iss)
104459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
104559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_resizer_unregister_entities(&iss->resizer);
104659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_ipipe_unregister_entities(&iss->ipipe);
104759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_ipipeif_unregister_entities(&iss->ipipeif);
104859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_csi2_unregister_entities(&iss->csi2a);
104959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_csi2_unregister_entities(&iss->csi2b);
105059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
105159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	v4l2_device_unregister(&iss->v4l2_dev);
105259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	media_device_unregister(&iss->media_dev);
105359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
105459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
105559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre/*
105659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * iss_register_subdev_group - Register a group of subdevices
105759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @iss: OMAP4 ISS device
105859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * @board_info: I2C subdevs board information array
105959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
106059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Register all I2C subdevices in the board_info array. The array must be
106159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * terminated by a NULL entry, and the first entry must be the sensor.
106259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre *
106359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * Return a pointer to the sensor media entity if it has been successfully
106459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre * registered, or NULL otherwise.
106559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre */
106659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic struct v4l2_subdev *
106759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreiss_register_subdev_group(struct iss_device *iss,
106859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		     struct iss_subdev_i2c_board_info *board_info)
106959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
107059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct v4l2_subdev *sensor = NULL;
107159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	unsigned int first;
107259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
107359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (board_info->board_info == NULL)
107459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return NULL;
107559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
107659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	for (first = 1; board_info->board_info; ++board_info, first = 0) {
107759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		struct v4l2_subdev *subdev;
107859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		struct i2c_adapter *adapter;
107959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
108059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		adapter = i2c_get_adapter(board_info->i2c_adapter_id);
108159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (adapter == NULL) {
108259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			dev_err(iss->dev, "%s: Unable to get I2C adapter %d for "
108359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				"device %s\n", __func__,
108459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				board_info->i2c_adapter_id,
108559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				board_info->board_info->type);
108659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			continue;
108759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
108859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
108959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		subdev = v4l2_i2c_new_subdev_board(&iss->v4l2_dev, adapter,
109059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				board_info->board_info, NULL);
109159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (subdev == NULL) {
109259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			dev_err(iss->dev, "%s: Unable to register subdev %s\n",
109359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre				__func__, board_info->board_info->type);
109459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			continue;
109559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
109659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
109759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (first)
109859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			sensor = subdev;
109959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
110059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
110159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return sensor;
110259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
110359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
110459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_register_entities(struct iss_device *iss)
110559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
110659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_platform_data *pdata = iss->pdata;
110759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_v4l2_subdevs_group *subdevs;
110859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int ret;
110959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
111059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->media_dev.dev = iss->dev;
111159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	strlcpy(iss->media_dev.model, "TI OMAP4 ISS",
111259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		sizeof(iss->media_dev.model));
111359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->media_dev.hw_revision = iss->revision;
111459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->media_dev.link_notify = iss_pipeline_link_notify;
111559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = media_device_register(&iss->media_dev);
111659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0) {
111759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		printk(KERN_ERR "%s: Media device registration failed (%d)\n",
111859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			__func__, ret);
111959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return ret;
112059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
112159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
112259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->v4l2_dev.mdev = &iss->media_dev;
112359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = v4l2_device_register(iss->dev, &iss->v4l2_dev);
112459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0) {
112559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		printk(KERN_ERR "%s: V4L2 device registration failed (%d)\n",
112659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			__func__, ret);
112759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto done;
112859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
112959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
113059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Register internal entities */
113159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_csi2_register_entities(&iss->csi2a, &iss->v4l2_dev);
113259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
113359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto done;
113459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
113559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_csi2_register_entities(&iss->csi2b, &iss->v4l2_dev);
113659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
113759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto done;
113859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
113959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_ipipeif_register_entities(&iss->ipipeif, &iss->v4l2_dev);
114059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
114159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto done;
114259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
114359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_ipipe_register_entities(&iss->ipipe, &iss->v4l2_dev);
114459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
114559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto done;
114659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
114759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_resizer_register_entities(&iss->resizer, &iss->v4l2_dev);
114859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
114959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto done;
115059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
115159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Register external entities */
115259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	for (subdevs = pdata->subdevs; subdevs && subdevs->subdevs; ++subdevs) {
115359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		struct v4l2_subdev *sensor;
115459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		struct media_entity *input;
115559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		unsigned int flags;
115659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		unsigned int pad;
115759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
115859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		sensor = iss_register_subdev_group(iss, subdevs->subdevs);
115959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (sensor == NULL)
116059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			continue;
116159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
116259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		sensor->host_priv = subdevs;
116359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
116459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		/* Connect the sensor to the correct interface module.
116559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		 * CSI2a receiver through CSIPHY1, or
116659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		 * CSI2b receiver through CSIPHY2
116759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		 */
116859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		switch (subdevs->interface) {
116959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		case ISS_INTERFACE_CSI2A_PHY1:
117059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			input = &iss->csi2a.subdev.entity;
117159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			pad = CSI2_PAD_SINK;
117259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			flags = MEDIA_LNK_FL_IMMUTABLE
117359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			      | MEDIA_LNK_FL_ENABLED;
117459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			break;
117559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
117659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		case ISS_INTERFACE_CSI2B_PHY2:
117759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			input = &iss->csi2b.subdev.entity;
117859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			pad = CSI2_PAD_SINK;
117959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			flags = MEDIA_LNK_FL_IMMUTABLE
118059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			      | MEDIA_LNK_FL_ENABLED;
118159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			break;
118259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
118359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		default:
118459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			printk(KERN_ERR "%s: invalid interface type %u\n",
118559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			       __func__, subdevs->interface);
118659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			ret = -EINVAL;
118759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			goto done;
118859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
118959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
119059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = media_entity_create_link(&sensor->entity, 0, input, pad,
119159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre					       flags);
119259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (ret < 0)
119359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			goto done;
119459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
119559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
119659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = v4l2_device_register_subdev_nodes(&iss->v4l2_dev);
119759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
119859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirredone:
119959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
120059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss_unregister_entities(iss);
120159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
120259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return ret;
120359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
120459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
120559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic void iss_cleanup_modules(struct iss_device *iss)
120659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
120759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_csi2_cleanup(iss);
120859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_ipipeif_cleanup(iss);
120959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_ipipe_cleanup(iss);
121059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_resizer_cleanup(iss);
121159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
121259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
121359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_initialize_modules(struct iss_device *iss)
121459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
121559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int ret;
121659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
121759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_csiphy_init(iss);
121859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0) {
121959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "CSI PHY initialization failed\n");
122059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_csiphy;
122159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
122259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
122359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_csi2_init(iss);
122459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0) {
122559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "CSI2 initialization failed\n");
122659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_csi2;
122759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
122859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
122959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_ipipeif_init(iss);
123059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0) {
123159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "ISP IPIPEIF initialization failed\n");
123259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_ipipeif;
123359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
123459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
123559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_ipipe_init(iss);
123659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0) {
123759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "ISP IPIPE initialization failed\n");
123859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_ipipe;
123959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
124059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
124159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_resizer_init(iss);
124259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0) {
124359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "ISP RESIZER initialization failed\n");
124459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_resizer;
124559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
124659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
124759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Connect the submodules. */
124859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = media_entity_create_link(
124959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			&iss->csi2a.subdev.entity, CSI2_PAD_SOURCE,
125059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			&iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0);
125159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
125259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_link;
125359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
125459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = media_entity_create_link(
125559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			&iss->csi2b.subdev.entity, CSI2_PAD_SOURCE,
125659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			&iss->ipipeif.subdev.entity, IPIPEIF_PAD_SINK, 0);
125759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
125859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_link;
125959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
126059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = media_entity_create_link(
126159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			&iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP,
126259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			&iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0);
126359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
126459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_link;
126559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
126659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = media_entity_create_link(
126759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			&iss->ipipeif.subdev.entity, IPIPEIF_PAD_SOURCE_VP,
126859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			&iss->ipipe.subdev.entity, IPIPE_PAD_SINK, 0);
126959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
127059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_link;
127159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
127259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = media_entity_create_link(
127359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			&iss->ipipe.subdev.entity, IPIPE_PAD_SOURCE_VP,
127459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			&iss->resizer.subdev.entity, RESIZER_PAD_SINK, 0);
127559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
127659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_link;
127759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
127859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
127959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
128059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreerror_link:
128159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_resizer_cleanup(iss);
128259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreerror_resizer:
128359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_ipipe_cleanup(iss);
128459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreerror_ipipe:
128559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_ipipeif_cleanup(iss);
128659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreerror_ipipeif:
128759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_csi2_cleanup(iss);
128859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreerror_csi2:
128959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreerror_csiphy:
129059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return ret;
129159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
129259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
129359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_probe(struct platform_device *pdev)
129459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
129559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_platform_data *pdata = pdev->dev.platform_data;
129659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_device *iss;
129759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int i, ret;
129859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
129959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (pdata == NULL)
130059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return -EINVAL;
130159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
130259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss = kzalloc(sizeof(*iss), GFP_KERNEL);
130359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (!iss) {
130459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(&pdev->dev, "Could not allocate memory\n");
130559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		return -ENOMEM;
130659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
130759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
130859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	mutex_init(&iss->iss_mutex);
130959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
131059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->dev = &pdev->dev;
131159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->pdata = pdata;
131259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->ref_count = 0;
131359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
131459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->raw_dmamask = DMA_BIT_MASK(32);
131559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->dev->dma_mask = &iss->raw_dmamask;
131659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->dev->coherent_dma_mask = DMA_BIT_MASK(32);
131759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
131859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	platform_set_drvdata(pdev, iss);
131959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
132059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Clocks */
132159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = iss_map_mem_resource(pdev, iss, OMAP4_ISS_MEM_TOP);
132259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
132359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error;
132459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
132559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = iss_get_clocks(iss);
132659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
132759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error;
132859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
132959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (omap4iss_get(iss) == NULL)
133059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error;
133159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
133259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = iss_reset(iss);
133359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
133459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_iss;
133559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
133659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->revision = readl(iss->regs[OMAP4_ISS_MEM_TOP] + ISS_HL_REVISION);
133759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	dev_info(iss->dev, "Revision %08x found\n", iss->revision);
133859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
133959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	for (i = 1; i < OMAP4_ISS_MEM_LAST; i++) {
134059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = iss_map_mem_resource(pdev, iss, i);
134159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (ret)
134259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			goto error_iss;
134359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
134459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
134559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Configure BTE BW_LIMITER field to max recommended value (1 GB) */
134659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	writel((readl(iss->regs[OMAP4_ISS_MEM_BTE] + BTE_CTRL) & ~BTE_CTRL_BW_LIMITER_MASK) |
134759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		(18 << BTE_CTRL_BW_LIMITER_SHIFT),
134859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		iss->regs[OMAP4_ISS_MEM_BTE] + BTE_CTRL);
134959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
135059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Perform ISP reset */
135159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = omap4iss_subclk_enable(iss, OMAP4_ISS_SUBCLK_ISP);
135259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
135359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_iss;
135459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
135559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = iss_isp_reset(iss);
135659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
135759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_iss;
135859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
135959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	dev_info(iss->dev, "ISP Revision %08x found\n",
136059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		 readl(iss->regs[OMAP4_ISS_MEM_ISP_SYS1] + ISP5_REVISION));
136159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
136259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Interrupt */
136359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss->irq_num = platform_get_irq(pdev, 0);
136459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (iss->irq_num <= 0) {
136559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "No IRQ resource\n");
136659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = -ENODEV;
136759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_iss;
136859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
136959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
137059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (request_irq(iss->irq_num, iss_isr, IRQF_SHARED, "OMAP4 ISS", iss)) {
137159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		dev_err(iss->dev, "Unable to request IRQ\n");
137259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		ret = -EINVAL;
137359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_iss;
137459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
137559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
137659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	/* Entities */
137759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = iss_initialize_modules(iss);
137859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
137959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_irq;
138059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
138159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	ret = iss_register_entities(iss);
138259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	if (ret < 0)
138359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		goto error_modules;
138459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
138559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_put(iss);
138659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
138759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
138859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
138959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreerror_modules:
139059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss_cleanup_modules(iss);
139159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreerror_irq:
139259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	free_irq(iss->irq_num, iss);
139359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreerror_iss:
139459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	omap4iss_put(iss);
139559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirreerror:
139659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss_put_clocks(iss);
139759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
139859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	for (i = 0; i < OMAP4_ISS_MEM_LAST; i++) {
139959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (iss->regs[i]) {
140059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			iounmap(iss->regs[i]);
140159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			iss->regs[i] = NULL;
140259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
140359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
140459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (iss->res[i]) {
140559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			release_mem_region(iss->res[i]->start,
140659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre					   resource_size(iss->res[i]));
140759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			iss->res[i] = NULL;
140859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
140959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
141059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	platform_set_drvdata(pdev, NULL);
141159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
141259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	mutex_destroy(&iss->iss_mutex);
141359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	kfree(iss);
141459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
141559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return ret;
141659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
141759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
141859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic int iss_remove(struct platform_device *pdev)
141959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre{
142059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	struct iss_device *iss = platform_get_drvdata(pdev);
142159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	int i;
142259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
142359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss_unregister_entities(iss);
142459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss_cleanup_modules(iss);
142559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
142659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	free_irq(iss->irq_num, iss);
142759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	iss_put_clocks(iss);
142859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
142959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	for (i = 0; i < OMAP4_ISS_MEM_LAST; i++) {
143059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (iss->regs[i]) {
143159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			iounmap(iss->regs[i]);
143259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			iss->regs[i] = NULL;
143359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
143459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
143559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		if (iss->res[i]) {
143659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			release_mem_region(iss->res[i]->start,
143759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre					   resource_size(iss->res[i]));
143859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre			iss->res[i] = NULL;
143959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		}
144059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	}
144159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
144259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	kfree(iss);
144359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
144459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	return 0;
144559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre}
144659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
144759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic struct platform_device_id omap4iss_id_table[] = {
144859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	{ "omap4iss", 0 },
144959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	{ },
145059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre};
145159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio AguirreMODULE_DEVICE_TABLE(platform, omap4iss_id_table);
145259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
145359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirrestatic struct platform_driver iss_driver = {
145459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	.probe		= iss_probe,
145559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	.remove		= iss_remove,
145659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	.id_table	= omap4iss_id_table,
145759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	.driver = {
145859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		.owner	= THIS_MODULE,
145959f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre		.name	= "omap4iss",
146059f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre	},
146159f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre};
146259f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
146359f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirremodule_platform_driver(iss_driver);
146459f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio Aguirre
146559f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio AguirreMODULE_DESCRIPTION("TI OMAP4 ISS driver");
146659f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio AguirreMODULE_AUTHOR("Sergio Aguirre <sergio.a.aguirre@gmail.com>");
146759f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio AguirreMODULE_LICENSE("GPL");
146859f0ad8076816d13f7cba80d2b178ff5ab787e2eSergio AguirreMODULE_VERSION(ISS_VIDEO_DRIVER_VERSION);
1469