14f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* 24f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * V4L2 Driver for i.MX3x camera host 34f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * 44f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Copyright (C) 2008 54f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de> 64f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * 74f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * This program is free software; you can redistribute it and/or modify 84f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * it under the terms of the GNU General Public License version 2 as 94f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * published by the Free Software Foundation. 104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/init.h> 134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/module.h> 144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/videodev2.h> 154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/platform_device.h> 164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/clk.h> 174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/vmalloc.h> 184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/interrupt.h> 19f39c1ab3c3878f1a50ca129e55d17ae63215fcbeGuennadi Liakhovetski#include <linux/sched.h> 204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <media/v4l2-common.h> 224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <media/v4l2-dev.h> 23379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski#include <media/videobuf2-dma-contig.h> 244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <media/soc_camera.h> 25760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski#include <media/soc_mediabus.h> 264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <mach/ipu.h> 284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <mach/mx3_camera.h> 29a8de6635799b58b52c610da9ee390a3e900e7bc7Sascha Hauer#include <mach/dma.h> 304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define MX3_CAM_DRV_NAME "mx3-camera" 324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* CMOS Sensor Interface Registers */ 344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_REG_START 0x60 354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF (0x60 - CSI_REG_START) 374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_FRM_SIZE (0x64 - CSI_REG_START) 384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_ACT_FRM_SIZE (0x68 - CSI_REG_START) 394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_OUT_FRM_CTRL (0x6C - CSI_REG_START) 404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_TST_CTRL (0x70 - CSI_REG_START) 414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_CCIR_CODE_1 (0x74 - CSI_REG_START) 424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_CCIR_CODE_2 (0x78 - CSI_REG_START) 434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_CCIR_CODE_3 (0x7C - CSI_REG_START) 444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_FLASH_STROBE_1 (0x80 - CSI_REG_START) 454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_FLASH_STROBE_2 (0x84 - CSI_REG_START) 464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_VSYNC_POL_SHIFT 0 484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_HSYNC_POL_SHIFT 1 494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_POL_SHIFT 2 504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_PIX_CLK_POL_SHIFT 3 514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_SENS_PRTCL_SHIFT 4 524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_SENS_CLKSRC_SHIFT 7 534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_SHIFT 8 544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_WIDTH_SHIFT 10 554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_EXT_VSYNC_SHIFT 15 564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DIVRATIO_SHIFT 16 574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_RGB_YUV444 (0UL << CSI_SENS_CONF_DATA_FMT_SHIFT) 594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_YUV422 (2UL << CSI_SENS_CONF_DATA_FMT_SHIFT) 604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_BAYER (3UL << CSI_SENS_CONF_DATA_FMT_SHIFT) 614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define MAX_VIDEO_MEM 16 634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 64379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetskienum csi_buffer_state { 65379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski CSI_BUF_NEEDS_INIT, 66379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski CSI_BUF_PREPARED, 67379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski}; 68379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistruct mx3_camera_buffer { 704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* common v4l buffer stuff -- must be first */ 71379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct vb2_buffer vb; 72379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski enum csi_buffer_state state; 73379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct list_head queue; 744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* One descriptot per scatterlist (per frame) */ 764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_async_tx_descriptor *txd; 774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* We have to "build" a scatterlist ourselves - one element per frame */ 794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct scatterlist sg; 804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/** 834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * struct mx3_camera_dev - i.MX3x camera (CSI) object 844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @dev: camera device, to which the coherent buffer is attached 854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @icd: currently attached camera sensor 864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @clk: pointer to clock 874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @base: remapped register base address 884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @pdata: platform data 894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @platform_flags: platform flags 904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @mclk: master clock frequency in Hz 914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @capture: list of capture videobuffers 924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @lock: protects video buffer lists 934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @active: active video buffer 944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @idmac_channel: array of pointers to IPU DMAC DMA channels 954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @soc_host: embedded soc_host object 964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistruct mx3_camera_dev { 984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * i.MX3x is only supposed to handle one camera on its Camera Sensor 1004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Interface. If anyone ever builds hardware to enable more than one 1014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * camera _simultaneously_, they will have to modify this driver too 1024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 1034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd; 1044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct clk *clk; 1054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski void __iomem *base; 1074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_pdata *pdata; 1094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long platform_flags; 1114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long mclk; 112579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski u16 width_flags; /* max 15 bits */ 1134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct list_head capture; 1154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spinlock_t lock; /* Protects video buffer lists */ 1164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer *active; 11707f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski size_t buf_total; 118379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct vb2_alloc_ctx *alloc_ctx; 119379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski enum v4l2_field field; 120379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski int sequence; 1214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* IDMAC / dmaengine interface */ 1234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *idmac_channel[1]; /* We need one channel */ 1244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host soc_host; 1264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 1274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistruct dma_chan_request { 1294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam; 1304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski enum ipu_channel id; 1314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 1324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic u32 csi_reg_read(struct mx3_camera_dev *mx3, off_t reg) 1344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return __raw_readl(mx3->base + reg); 1364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void csi_reg_write(struct mx3_camera_dev *mx3, u32 value, off_t reg) 1394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski __raw_writel(value, mx3->base + reg); 1414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 143379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetskistatic struct mx3_camera_buffer *to_mx3_vb(struct vb2_buffer *vb) 144379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski{ 145379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski return container_of(vb, struct mx3_camera_buffer, vb); 146379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski} 147379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 1484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called from the IPU IDMAC ISR */ 1494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_cam_dma_done(void *arg) 1504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_tx_desc *desc = to_tx_desc(arg); 1524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_chan *chan = desc->txd.chan; 1534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichannel = to_idmac_chan(chan); 1544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ichannel->client; 1554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_dbg(chan->device->dev, "callback cookie %d, active DMA 0x%08x\n", 1574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski desc->txd.cookie, mx3_cam->active ? sg_dma_address(&mx3_cam->active->sg) : 0); 1584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_lock(&mx3_cam->lock); 1604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->active) { 161379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct vb2_buffer *vb = &mx3_cam->active->vb; 162379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct mx3_camera_buffer *buf = to_mx3_vb(vb); 163379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 164379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski list_del_init(&buf->queue); 165379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski do_gettimeofday(&vb->v4l2_buf.timestamp); 166379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski vb->v4l2_buf.field = mx3_cam->field; 167379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski vb->v4l2_buf.sequence = mx3_cam->sequence++; 168379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski vb2_buffer_done(vb, VB2_BUF_STATE_DONE); 1694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 1704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (list_empty(&mx3_cam->capture)) { 1724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = NULL; 1734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_unlock(&mx3_cam->lock); 1744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 1764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * stop capture - without further buffers IPU_CHA_BUF0_RDY will 1774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * not get updated 1784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 1794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return; 1804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 1814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = list_entry(mx3_cam->capture.next, 183379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct mx3_camera_buffer, queue); 1844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_unlock(&mx3_cam->lock); 1854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* 1884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Videobuf operations 1894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 1904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* 1924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Calculate the __buffer__ (not data) size and number of buffers. 1934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 194379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetskistatic int mx3_videobuf_setup(struct vb2_queue *vq, 195fc714e70dd063e6887d09872ac6158b0c20cc817Guennadi Liakhovetski const struct v4l2_format *fmt, 196379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski unsigned int *count, unsigned int *num_planes, 197035aa1475d6e4afdf97dccf6c6d6059063398b57Marek Szyprowski unsigned int sizes[], void *alloc_ctxs[]) 1984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 199379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct soc_camera_device *icd = soc_camera_from_vb2q(vq); 2007dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 2014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 20207f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski int bytes_per_line; 20307f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski unsigned int height; 2044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam->idmac_channel[0]) 2064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 2074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 20807f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski if (fmt) { 20907f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski const struct soc_camera_format_xlate *xlate = soc_camera_xlate_by_fourcc(icd, 21007f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski fmt->fmt.pix.pixelformat); 21107f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski if (!xlate) 21207f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski return -EINVAL; 21307f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski bytes_per_line = soc_mbus_bytes_per_line(fmt->fmt.pix.width, 21407f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski xlate->host_fmt); 21507f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski height = fmt->fmt.pix.height; 21607f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski } else { 21707f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski /* Called from VIDIOC_REQBUFS or in compatibility mode */ 21807f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, 219760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski icd->current_fmt->host_fmt); 22007f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski height = icd->user_height; 22107f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski } 222760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (bytes_per_line < 0) 223760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return bytes_per_line; 224760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 22507f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski sizes[0] = bytes_per_line * height; 2264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 22707f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski alloc_ctxs[0] = mx3_cam->alloc_ctx; 2284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 22907f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski if (!vq->num_buffers) 23007f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski mx3_cam->sequence = 0; 2314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 23207f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski if (!*count) 23307f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski *count = 2; 2344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 23507f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski /* If *num_planes != 0, we have already verified *count. */ 23607f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski if (!*num_planes && 23707f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski sizes[0] * *count + mx3_cam->buf_total > MAX_VIDEO_MEM * 1024 * 1024) 23807f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski *count = (MAX_VIDEO_MEM * 1024 * 1024 - mx3_cam->buf_total) / 23907f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski sizes[0]; 2404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 24107f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski *num_planes = 1; 2424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 243379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski return 0; 2444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 2454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic enum pixel_fmt fourcc_to_ipu_pix(__u32 fourcc) 2474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 2484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Add more formats as need arises and test possibilities appear... */ 2494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski switch (fourcc) { 2504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_RGB24: 2514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_RGB24; 252a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo case V4L2_PIX_FMT_UYVY: 253a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo case V4L2_PIX_FMT_RGB565: 2544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 2554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_GENERIC; 2564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 2574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 2584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 259379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetskistatic void mx3_videobuf_queue(struct vb2_buffer *vb) 2604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 261379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); 2627dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 2634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 264379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct mx3_camera_buffer *buf = to_mx3_vb(vb); 26507f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski struct scatterlist *sg = &buf->sg; 26607f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski struct dma_async_tx_descriptor *txd; 26707f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski struct idmac_channel *ichan = mx3_cam->idmac_channel[0]; 2684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_video_param *video = &ichan->params.video; 26907f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski const struct soc_mbus_pixelfmt *host_fmt = icd->current_fmt->host_fmt; 27007f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, host_fmt); 271379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski unsigned long flags; 27207f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski dma_cookie_t cookie; 27307f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski size_t new_size; 27407f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 27507f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski BUG_ON(bytes_per_line <= 0); 27607f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 27707f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski new_size = bytes_per_line * icd->user_height; 27807f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 27907f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski if (vb2_plane_size(vb, 0) < new_size) { 28007f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski dev_err(icd->parent, "Buffer #%d too small (%lu < %zu)\n", 28107f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski vb->v4l2_buf.index, vb2_plane_size(vb, 0), new_size); 28207f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski goto error; 28307f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski } 28407f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 28507f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski if (buf->state == CSI_BUF_NEEDS_INIT) { 28607f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski sg_dma_address(sg) = vb2_dma_contig_plane_dma_addr(vb, 0); 28707f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski sg_dma_len(sg) = new_size; 28807f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 28916052827d98fbc13c31ebad560af4bd53e2b4dd5Alexandre Bounine txd = dmaengine_prep_slave_sg( 290e0d23ef29ed637dc6bd739f590985746d9ad9caaVinod Koul &ichan->dma_chan, sg, 1, DMA_DEV_TO_MEM, 29107f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski DMA_PREP_INTERRUPT); 29207f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski if (!txd) 29307f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski goto error; 29407f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 29507f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski txd->callback_param = txd; 29607f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski txd->callback = mx3_cam_dma_done; 29707f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 29807f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski buf->state = CSI_BUF_PREPARED; 29907f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski buf->txd = txd; 30007f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski } else { 30107f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski txd = buf->txd; 30207f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski } 30307f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 30407f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski vb2_set_plane_payload(vb, 0, new_size); 3054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* This is the configuration of one sg-element */ 30707f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski video->out_pixel_fmt = fourcc_to_ipu_pix(host_fmt->fourcc); 308a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo 309a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo if (video->out_pixel_fmt == IPU_PIX_FMT_GENERIC) { 310a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo /* 31107f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski * If the IPU DMA channel is configured to transfer generic 31207f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski * 8-bit data, we have to set up the geometry parameters 31307f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski * correctly, according to the current pixel format. The DMA 31407f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski * horizontal parameters in this case are expressed in bytes, 31507f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski * not in pixels. 316a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo */ 317a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo video->out_width = bytes_per_line; 318a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo video->out_height = icd->user_height; 319a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo video->out_stride = bytes_per_line; 320a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo } else { 321a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo /* 322a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo * For IPU known formats the pixel unit will be managed 323a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo * successfully by the IPU code 324a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo */ 325a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo video->out_width = icd->user_width; 326a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo video->out_height = icd->user_height; 327a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo video->out_stride = icd->user_width; 328a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo } 3294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#ifdef DEBUG 3314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* helps to see what DMA actually has written */ 332379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski if (vb2_plane_vaddr(vb, 0)) 333379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski memset(vb2_plane_vaddr(vb, 0), 0xaa, vb2_get_plane_payload(vb, 0)); 3344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#endif 3354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 336379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski spin_lock_irqsave(&mx3_cam->lock, flags); 337379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski list_add_tail(&buf->queue, &mx3_cam->capture); 3384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 339379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski if (!mx3_cam->active) 3404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = buf; 3414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3422dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski spin_unlock_irq(&mx3_cam->lock); 3434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski cookie = txd->tx_submit(txd); 3457dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_dbg(icd->parent, "Submitted cookie %d DMA 0x%08x\n", 3460166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski cookie, sg_dma_address(&buf->sg)); 3472dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski 3484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (cookie >= 0) 3494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return; 3504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 351379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski spin_lock_irq(&mx3_cam->lock); 3524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 353379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski /* Submit error */ 354379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski list_del_init(&buf->queue); 3554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->active == buf) 3574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = NULL; 358379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 359379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski spin_unlock_irqrestore(&mx3_cam->lock, flags); 36007f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetskierror: 361379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); 3624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 3634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 364379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetskistatic void mx3_videobuf_release(struct vb2_buffer *vb) 3654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 366379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); 3677dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 3684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 369379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct mx3_camera_buffer *buf = to_mx3_vb(vb); 370379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct dma_async_tx_descriptor *txd = buf->txd; 3714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long flags; 3724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3737dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_dbg(icd->parent, 374379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski "Release%s DMA 0x%08x, queue %sempty\n", 3754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active == buf ? " active" : "", sg_dma_address(&buf->sg), 376379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski list_empty(&buf->queue) ? "" : "not "); 377379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 3784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_lock_irqsave(&mx3_cam->lock, flags); 3794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 380379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski if (mx3_cam->active == buf) 381379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski mx3_cam->active = NULL; 382379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 383379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski /* Doesn't hurt also if the list is empty */ 384379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski list_del_init(&buf->queue); 385379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski buf->state = CSI_BUF_NEEDS_INIT; 386379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 387379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski if (txd) { 388379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski buf->txd = NULL; 389379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski if (mx3_cam->idmac_channel[0]) 390379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski async_tx_ack(txd); 3914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 392379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 3934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_unlock_irqrestore(&mx3_cam->lock, flags); 39407f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 39507f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski mx3_cam->buf_total -= vb2_plane_size(vb, 0); 3964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 3974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 398379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetskistatic int mx3_videobuf_init(struct vb2_buffer *vb) 399379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski{ 40007f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); 40107f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 40207f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 403379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski struct mx3_camera_buffer *buf = to_mx3_vb(vb); 40407f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 405379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski /* This is for locking debugging only */ 406379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski INIT_LIST_HEAD(&buf->queue); 407379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski sg_init_table(&buf->sg, 1); 408379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 409379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski buf->state = CSI_BUF_NEEDS_INIT; 41007f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski 41107f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski mx3_cam->buf_total += vb2_plane_size(vb, 0); 412379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 413379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski return 0; 414379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski} 415379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 41608a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetskistatic int mx3_stop_streaming(struct vb2_queue *q) 41708a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski{ 41808a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski struct soc_camera_device *icd = soc_camera_from_vb2q(q); 4197dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 42008a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 42108a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski struct idmac_channel *ichan = mx3_cam->idmac_channel[0]; 42208a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski struct mx3_camera_buffer *buf, *tmp; 42308a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski unsigned long flags; 42408a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski 42508a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski if (ichan) { 42607f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski struct dma_chan *chan = &ichan->dma_chan; 42707f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski chan->device->device_control(chan, DMA_PAUSE, 0); 42808a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski } 42908a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski 43008a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski spin_lock_irqsave(&mx3_cam->lock, flags); 43108a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski 43208a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski mx3_cam->active = NULL; 43308a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski 43408a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski list_for_each_entry_safe(buf, tmp, &mx3_cam->capture, queue) { 43508a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski list_del_init(&buf->queue); 43607f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); 43708a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski } 43808a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski 43908a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski spin_unlock_irqrestore(&mx3_cam->lock, flags); 44008a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski 44108a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski return 0; 44208a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski} 44308a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski 444379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetskistatic struct vb2_ops mx3_videobuf_ops = { 445379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski .queue_setup = mx3_videobuf_setup, 446379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski .buf_queue = mx3_videobuf_queue, 447379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski .buf_cleanup = mx3_videobuf_release, 448379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski .buf_init = mx3_videobuf_init, 449379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski .wait_prepare = soc_camera_unlock, 450379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski .wait_finish = soc_camera_lock, 45108a31b960598adef6aa9430c2cab4b5ef4db1ab8Guennadi Liakhovetski .stop_streaming = mx3_stop_streaming, 4524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 4534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 454379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetskistatic int mx3_camera_init_videobuf(struct vb2_queue *q, 4554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd) 4564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 457379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 458379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski q->io_modes = VB2_MMAP | VB2_USERPTR; 459379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski q->drv_priv = icd; 460379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski q->ops = &mx3_videobuf_ops; 461379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski q->mem_ops = &vb2_dma_contig_memops; 462379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski q->buf_struct_size = sizeof(struct mx3_camera_buffer); 463379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 464379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski return vb2_queue_init(q); 4654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 4664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* First part of ipu_csi_init_interface() */ 4684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_camera_activate(struct mx3_camera_dev *mx3_cam, 4694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd) 4704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 4714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski u32 conf; 4724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski long rate; 4734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Set default size: ipu_csi_set_window_size() */ 4754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, (640 - 1) | ((480 - 1) << 16), CSI_ACT_FRM_SIZE); 4764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* ...and position to 0:0: ipu_csi_set_window_pos() */ 4774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf = csi_reg_read(mx3_cam, CSI_OUT_FRM_CTRL) & 0xffff0000; 4784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, conf, CSI_OUT_FRM_CTRL); 4794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* We use only gated clock synchronisation mode so far */ 4814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf = 0 << CSI_SENS_CONF_SENS_PRTCL_SHIFT; 4824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Set generic data, platform-biggest bus-width */ 4844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= CSI_SENS_CONF_DATA_FMT_BAYER; 4854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) 4874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) 4894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 2 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) 4914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else/* if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4)*/ 4934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_CLK_SRC) 4964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_SENS_CLKSRC_SHIFT; 4974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_EXT_VSYNC) 4984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_EXT_VSYNC_SHIFT; 4994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DP) 5004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; 5014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_PCP) 5024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; 5034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_HSP) 5044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; 5054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_VSP) 5064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; 5074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* ipu_csi_init_interface() */ 5094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, conf, CSI_SENS_CONF); 5104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_enable(mx3_cam->clk); 5124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski rate = clk_round_rate(mx3_cam->clk, mx3_cam->mclk); 5137dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_dbg(icd->parent, "Set SENS_CONF to %x, rate %ld\n", conf, rate); 5144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (rate) 5154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_set_rate(mx3_cam->clk, rate); 5164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 5174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called with .video_lock held */ 5194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_add_device(struct soc_camera_device *icd) 5204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 5217dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 5224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 5234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 524979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski if (mx3_cam->icd) 525979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski return -EBUSY; 5264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_camera_activate(mx3_cam, icd); 5284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 52907f92448045a23d27dbc3ece3abcb6bafc618d43Guennadi Liakhovetski mx3_cam->buf_total = 0; 5304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->icd = icd; 5314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5327dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_info(icd->parent, "MX3 Camera driver attached to camera %d\n", 53340e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski icd->devnum); 53440e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski 53540e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski return 0; 5364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 5374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called with .video_lock held */ 5394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_camera_remove_device(struct soc_camera_device *icd) 5404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 5417dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 5424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 5434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel **ichan = &mx3_cam->idmac_channel[0]; 5444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski BUG_ON(icd != mx3_cam->icd); 5464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (*ichan) { 5484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dma_release_channel(&(*ichan)->dma_chan); 5494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *ichan = NULL; 5504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 5514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_disable(mx3_cam->clk); 5534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->icd = NULL; 5554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5567dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_info(icd->parent, "MX3 Camera driver detached from camera %d\n", 5574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski icd->devnum); 5584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 5594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int test_platform_param(struct mx3_camera_dev *mx3_cam, 5614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned char buswidth, unsigned long *flags) 5624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 5634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 564579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski * If requested data width is supported by the platform, use it or any 565579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski * possible lower value - i.MX31 is smart enough to shift bits 566579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski */ 567579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (buswidth > fls(mx3_cam->width_flags)) 568579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski return -EINVAL; 569579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski 570579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski /* 5714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Platform specified synchronization and pixel clock polarities are 5724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * only a recommendation and are only used during probing. MX3x 5734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * camera interface only works in master mode, i.e., uses HSYNC and 5744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * VSYNC signals from the sensor 5754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 576579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski *flags = V4L2_MBUS_MASTER | 577579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski V4L2_MBUS_HSYNC_ACTIVE_HIGH | 578579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski V4L2_MBUS_HSYNC_ACTIVE_LOW | 579579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski V4L2_MBUS_VSYNC_ACTIVE_HIGH | 580579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski V4L2_MBUS_VSYNC_ACTIVE_LOW | 581579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski V4L2_MBUS_PCLK_SAMPLE_RISING | 582579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski V4L2_MBUS_PCLK_SAMPLE_FALLING | 583579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski V4L2_MBUS_DATA_ACTIVE_HIGH | 584579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski V4L2_MBUS_DATA_ACTIVE_LOW; 5854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 5874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 5884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_try_bus_param(struct soc_camera_device *icd, 5904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const unsigned int depth) 5914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 592579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 5937dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 5944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 595579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; 596579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski unsigned long bus_flags, common_flags; 5974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int ret = test_platform_param(mx3_cam, depth, &bus_flags); 5984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5997dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_dbg(icd->parent, "request bus width %d bit: %d\n", depth, ret); 6004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 6024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 6034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 604579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); 605579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (!ret) { 606579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags = soc_mbus_config_compatible(&cfg, 607579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski bus_flags); 608579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (!common_flags) { 609579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski dev_warn(icd->parent, 610579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski "Flags incompatible: camera 0x%x, host 0x%lx\n", 611579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski cfg.flags, bus_flags); 612579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski return -EINVAL; 613579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski } 614579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski } else if (ret != -ENOIOCTLCMD) { 615579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski return ret; 616579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski } 6174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 618579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski return 0; 6194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic bool chan_filter(struct dma_chan *chan, void *arg) 6224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 6234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_chan_request *rq = arg; 6244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_pdata *pdata; 6254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 626a8de6635799b58b52c610da9ee390a3e900e7bc7Sascha Hauer if (!imx_dma_is_ipu(chan)) 627a8de6635799b58b52c610da9ee390a3e900e7bc7Sascha Hauer return false; 628a8de6635799b58b52c610da9ee390a3e900e7bc7Sascha Hauer 6294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!rq) 6304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return false; 6314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 632979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski pdata = rq->mx3_cam->soc_host.v4l2_dev.dev->platform_data; 6334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return rq->id == chan->chan_id && 6354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pdata->dma_dev == chan->device->dev; 6364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 638760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetskistatic const struct soc_mbus_pixelfmt mx3_camera_formats[] = { 6394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski { 640760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .fourcc = V4L2_PIX_FMT_SBGGR8, 641760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .name = "Bayer BGGR (sRGB) 8 bit", 642760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .bits_per_sample = 8, 643760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .packing = SOC_MBUS_PACKING_NONE, 644760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .order = SOC_MBUS_ORDER_LE, 6454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski }, { 646760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .fourcc = V4L2_PIX_FMT_GREY, 647760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .name = "Monochrome 8 bit", 648760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .bits_per_sample = 8, 649760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .packing = SOC_MBUS_PACKING_NONE, 650760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .order = SOC_MBUS_ORDER_LE, 6514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski }, 6524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 6534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 654760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski/* This will be corrected as we get more formats */ 655760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetskistatic bool mx3_camera_packing_supported(const struct soc_mbus_pixelfmt *fmt) 6564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 657760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return fmt->packing == SOC_MBUS_PACKING_NONE || 658760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski (fmt->bits_per_sample == 8 && 659760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || 660760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski (fmt->bits_per_sample > 8 && 661760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski fmt->packing == SOC_MBUS_PACKING_EXTEND16); 6624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6643805f201934e5384f6e941222dc1968cb638a88cHans Verkuilstatic int mx3_camera_get_formats(struct soc_camera_device *icd, unsigned int idx, 6654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_format_xlate *xlate) 6664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 667760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 6687dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct device *dev = icd->parent; 669760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski int formats = 0, ret; 670760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski enum v4l2_mbus_pixelcode code; 671760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski const struct soc_mbus_pixelfmt *fmt; 6724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 673760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); 674760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (ret < 0) 675760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski /* No more formats */ 676760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return 0; 6774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 678760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski fmt = soc_mbus_get_fmtdesc(code); 679760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (!fmt) { 6807dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_warn(icd->parent, 681d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski "Unsupported format code #%u: %d\n", idx, code); 6824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 683760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski } 6844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 685760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski /* This also checks support for the requested bits-per-sample */ 686760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = mx3_camera_try_bus_param(icd, fmt->bits_per_sample); 6874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 6884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 6894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 690760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski switch (code) { 691760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski case V4L2_MBUS_FMT_SBGGR10_1X10: 6924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski formats++; 6934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (xlate) { 694760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->host_fmt = &mx3_camera_formats[0]; 695760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->code = code; 6964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate++; 697760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski dev_dbg(dev, "Providing format %s using code %d\n", 698760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mx3_camera_formats[0].name, code); 6994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 700760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski break; 701760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski case V4L2_MBUS_FMT_Y10_1X10: 7024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski formats++; 7034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (xlate) { 704760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->host_fmt = &mx3_camera_formats[1]; 705760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->code = code; 7064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate++; 707760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski dev_dbg(dev, "Providing format %s using code %d\n", 708760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mx3_camera_formats[1].name, code); 7094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 710760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski break; 7114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 712760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (!mx3_camera_packing_supported(fmt)) 713760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return 0; 714760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski } 715760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 716760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski /* Generic pass-through */ 717760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski formats++; 718760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (xlate) { 719760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->host_fmt = fmt; 720760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->code = code; 721a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo dev_dbg(dev, "Providing format %c%c%c%c in pass-through mode\n", 722a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo (fmt->fourcc >> (0*8)) & 0xFF, 723a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo (fmt->fourcc >> (1*8)) & 0xFF, 724a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo (fmt->fourcc >> (2*8)) & 0xFF, 725a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo (fmt->fourcc >> (3*8)) & 0xFF); 726760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate++; 7274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 7284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return formats; 7304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 7314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 73209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic void configure_geometry(struct mx3_camera_dev *mx3_cam, 733a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo unsigned int width, unsigned int height, 734d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski const struct soc_mbus_pixelfmt *fmt) 7354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 7364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski u32 ctrl, width_field, height_field; 737a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo 738a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo if (fourcc_to_ipu_pix(fmt->fourcc) == IPU_PIX_FMT_GENERIC) { 739a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo /* 740a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo * As the CSI will be configured to output BAYER, here 741a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo * the width parameter count the number of samples to 742a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo * capture to complete the whole image width. 743a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo */ 744cc552b620fa3a184ba3d4064223ca1d59325b166Guennadi Liakhovetski unsigned int num, den; 745cc552b620fa3a184ba3d4064223ca1d59325b166Guennadi Liakhovetski int ret = soc_mbus_samples_per_pixel(fmt, &num, &den); 746cc552b620fa3a184ba3d4064223ca1d59325b166Guennadi Liakhovetski BUG_ON(ret < 0); 747cc552b620fa3a184ba3d4064223ca1d59325b166Guennadi Liakhovetski width = width * num / den; 748a48be1d626ceb05b58a980a962214431af8041e8Alberto Panizzo } 7494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Setup frame size - this cannot be changed on-the-fly... */ 7516a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski width_field = width - 1; 7526a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski height_field = height - 1; 7534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, width_field | (height_field << 16), CSI_SENS_FRM_SIZE); 7544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, width_field << 16, CSI_FLASH_STROBE_1); 7564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, (height_field << 16) | 0x22, CSI_FLASH_STROBE_2); 7574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, width_field | (height_field << 16), CSI_ACT_FRM_SIZE); 7594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* ...and position */ 7614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ctrl = csi_reg_read(mx3_cam, CSI_OUT_FRM_CTRL) & 0xffff0000; 7624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Sensor does the cropping */ 7634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, ctrl | 0 | (0 << 8), CSI_OUT_FRM_CTRL); 76409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski} 76509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 76609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic int acquire_dma_channel(struct mx3_camera_dev *mx3_cam) 76709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski{ 76809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_mask_t mask; 76909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct dma_chan *chan; 77009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct idmac_channel **ichan = &mx3_cam->idmac_channel[0]; 77109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski /* We have to use IDMAC_IC_7 for Bayer / generic data */ 77209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct dma_chan_request rq = {.mx3_cam = mx3_cam, 77309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski .id = IDMAC_IC_7}; 77409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 77509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_zero(mask); 77609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_set(DMA_SLAVE, mask); 77709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_set(DMA_PRIVATE, mask); 77809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski chan = dma_request_channel(mask, chan_filter, &rq); 77909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (!chan) 78009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return -EBUSY; 78109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 78209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski *ichan = to_idmac_chan(chan); 78309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski (*ichan)->client = mx3_cam; 78409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 78509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return 0; 78609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski} 78709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 7886a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski/* 7896a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * FIXME: learn to use stride != width, then we can keep stride properly aligned 7906a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * and support arbitrary (even) widths. 7916a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski */ 792e26b31449142a18512b57dbea515af234992ba7cMárton Némethstatic inline void stride_align(__u32 *width) 7936a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski{ 794d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski if (ALIGN(*width, 8) < 4096) 795d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski *width = ALIGN(*width, 8); 7966a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski else 7976a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski *width = *width & ~7; 7986a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski} 7996a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8006a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski/* 8016a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * As long as we don't implement host-side cropping and scaling, we can use 8026a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * default g_crop and cropcap from soc_camera.c 8036a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski */ 80409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic int mx3_camera_set_crop(struct soc_camera_device *icd, 80508590b9613f7f624fe3a052586eea2dbb3584b38Guennadi Liakhovetski struct v4l2_crop *a) 80609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski{ 80708590b9613f7f624fe3a052586eea2dbb3584b38Guennadi Liakhovetski struct v4l2_rect *rect = &a->c; 8087dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 80909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 810c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 811760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski struct v4l2_mbus_framefmt mf; 8126a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski int ret; 81309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 8146a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096); 8156a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096); 8166a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8176a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, s_crop, a); 8186a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (ret < 0) 8196a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 8206a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 821d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski /* The capture device might have changed its output sizes */ 822760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); 8236a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (ret < 0) 8246a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 8256a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 826d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski if (mf.code != icd->current_fmt->code) 827d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski return -EINVAL; 828d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski 829760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (mf.width & 7) { 8306a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski /* Ouch! We can only handle 8-byte aligned width... */ 831760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski stride_align(&mf.width); 832760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); 83309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (ret < 0) 83409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return ret; 83509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski } 83609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 837379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski if (mf.width != icd->user_width || mf.height != icd->user_height) 838d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski configure_geometry(mx3_cam, mf.width, mf.height, 839d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski icd->current_fmt->host_fmt); 8406a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8417dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_dbg(icd->parent, "Sensor cropped %dx%d\n", 842760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.width, mf.height); 8436a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 844760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski icd->user_width = mf.width; 845760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski icd->user_height = mf.height; 8466a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8476a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 84809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski} 84909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 85009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic int mx3_camera_set_fmt(struct soc_camera_device *icd, 85109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct v4l2_format *f) 85209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski{ 8537dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 85409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 855c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 85609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski const struct soc_camera_format_xlate *xlate; 85709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct v4l2_pix_format *pix = &f->fmt.pix; 858760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski struct v4l2_mbus_framefmt mf; 85909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski int ret; 86009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 86109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); 86209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (!xlate) { 8637dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_warn(icd->parent, "Format %x not found\n", 8640166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski pix->pixelformat); 86509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return -EINVAL; 86609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski } 86709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 8686a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski stride_align(&pix->width); 8697dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_dbg(icd->parent, "Set format %dx%d\n", pix->width, pix->height); 8706a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 87109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski /* 87209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski * Might have to perform a complete interface initialisation like in 87309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski * ipu_csi_init_interface() in mxc_v4l2_s_param(). Also consider 87409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski * mxc_v4l2_s_fmt() 87509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski */ 87609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 877d2dcad49bc346054b49bd40fd96f397fec695a0fGuennadi Liakhovetski configure_geometry(mx3_cam, pix->width, pix->height, xlate->host_fmt); 8784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 879760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.width = pix->width; 880760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.height = pix->height; 881760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.field = pix->field; 882760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.colorspace = pix->colorspace; 883760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.code = xlate->code; 884760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 885760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); 886760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (ret < 0) 887760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return ret; 888760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 889760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (mf.code != xlate->code) 890760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return -EINVAL; 891760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 892379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski if (!mx3_cam->idmac_channel[0]) { 893379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski ret = acquire_dma_channel(mx3_cam); 894379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski if (ret < 0) 895379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski return ret; 896379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski } 897379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 898760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->width = mf.width; 899760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->height = mf.height; 900760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->field = mf.field; 901379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski mx3_cam->field = mf.field; 902760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->colorspace = mf.colorspace; 903760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski icd->current_fmt = xlate; 9044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9057dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_dbg(icd->parent, "Sensor set %dx%d\n", pix->width, pix->height); 9066a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 9074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 9084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_try_fmt(struct soc_camera_device *icd, 9114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_format *f) 9124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 913c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 9144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const struct soc_camera_format_xlate *xlate; 9154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_pix_format *pix = &f->fmt.pix; 916760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski struct v4l2_mbus_framefmt mf; 9174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski __u32 pixfmt = pix->pixelformat; 9184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int ret; 9194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); 9214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (pixfmt && !xlate) { 9227dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_warn(icd->parent, "Format %x not found\n", pixfmt); 9234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 9244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 9254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* limit to MX3 hardware capabilities */ 9274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (pix->height > 4096) 9284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->height = 4096; 9294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (pix->width > 4096) 9304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->width = 4096; 9314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* limit to sensor capabilities */ 933760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.width = pix->width; 934760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.height = pix->height; 935760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.field = pix->field; 936760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.colorspace = pix->colorspace; 937760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.code = xlate->code; 9384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 939760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); 940760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (ret < 0) 941760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return ret; 9424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 943760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->width = mf.width; 944760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->height = mf.height; 945760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->colorspace = mf.colorspace; 946760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 947760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski switch (mf.field) { 948760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski case V4L2_FIELD_ANY: 9494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->field = V4L2_FIELD_NONE; 950760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski break; 951760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski case V4L2_FIELD_NONE: 952760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski break; 953760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski default: 9547dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski dev_err(icd->parent, "Field type %d unsupported.\n", 955760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.field); 956760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = -EINVAL; 9574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 9584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 9604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 96257bee29d6e8cf721864fa47a18366bee5ff24f21Guennadi Liakhovetskistatic int mx3_camera_reqbufs(struct soc_camera_device *icd, 9634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_requestbuffers *p) 9644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 9654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 9664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic unsigned int mx3_camera_poll(struct file *file, poll_table *pt) 9694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 97057bee29d6e8cf721864fa47a18366bee5ff24f21Guennadi Liakhovetski struct soc_camera_device *icd = file->private_data; 9714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 972379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski return vb2_poll(&icd->vb2_vidq, file, pt); 9734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_querycap(struct soc_camera_host *ici, 9764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_capability *cap) 9774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 9784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* cap->name is set by the firendly caller:-> */ 9794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski strlcpy(cap->card, "i.MX3x Camera", sizeof(cap->card)); 9804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 9814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 9834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9858843d119eaf1a7a87a2cf8c3eadbd1937b16bc27Guennadi Liakhovetskistatic int mx3_camera_set_bus_param(struct soc_camera_device *icd) 9864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 987579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 9887dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->parent); 9894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 990579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; 9918843d119eaf1a7a87a2cf8c3eadbd1937b16bc27Guennadi Liakhovetski u32 pixfmt = icd->current_fmt->host_fmt->fourcc; 992579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski unsigned long bus_flags, common_flags; 9934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski u32 dw, sens_conf; 994760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski const struct soc_mbus_pixelfmt *fmt; 995760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski int buswidth; 996760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski int ret; 9974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const struct soc_camera_format_xlate *xlate; 9987dfff95366f48bf66f77c17cdc9ebd8be696ac5dGuennadi Liakhovetski struct device *dev = icd->parent; 9994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1000760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski fmt = soc_mbus_get_fmtdesc(icd->current_fmt->code); 1001760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (!fmt) 1002760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return -EINVAL; 1003760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 10044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); 10054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!xlate) { 10060166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_warn(dev, "Format %x not found\n", pixfmt); 10074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 10084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1010579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski buswidth = fmt->bits_per_sample; 1011579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski ret = test_platform_param(mx3_cam, buswidth, &bus_flags); 1012579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski 1013760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski dev_dbg(dev, "requested bus width %d bit: %d\n", buswidth, ret); 10144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 10164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 10174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1018579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); 1019579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (!ret) { 1020579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags = soc_mbus_config_compatible(&cfg, 1021579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski bus_flags); 1022579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (!common_flags) { 1023579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski dev_warn(icd->parent, 1024579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski "Flags incompatible: camera 0x%x, host 0x%lx\n", 1025579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski cfg.flags, bus_flags); 1026579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski return -EINVAL; 1027579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski } 1028579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski } else if (ret != -ENOIOCTLCMD) { 1029579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski return ret; 1030579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski } else { 1031579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags = bus_flags; 10324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1034579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski dev_dbg(dev, "Flags cam: 0x%x host: 0x%lx common: 0x%lx\n", 1035579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski cfg.flags, bus_flags, common_flags); 1036579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski 10374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Make choices, based on platform preferences */ 1038579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && 1039579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { 10404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_HSP) 1041579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; 10424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 1043579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; 10444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1046579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) && 1047579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) { 10484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_VSP) 1049579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH; 10504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 1051579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW; 10524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1054579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if ((common_flags & V4L2_MBUS_DATA_ACTIVE_HIGH) && 1055579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski (common_flags & V4L2_MBUS_DATA_ACTIVE_LOW)) { 10564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DP) 1057579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags &= ~V4L2_MBUS_DATA_ACTIVE_HIGH; 10584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 1059579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags &= ~V4L2_MBUS_DATA_ACTIVE_LOW; 10604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1062579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) && 1063579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) { 10644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_PCP) 1065579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING; 10664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 1067579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING; 10684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1070579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski cfg.flags = common_flags; 1071579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); 1072579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (ret < 0 && ret != -ENOIOCTLCMD) { 1073579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski dev_dbg(dev, "camera s_mbus_config(0x%lx) returned %d\n", 107440e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski common_flags, ret); 10754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 107640e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski } 10774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 10794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * So far only gated clock mode is supported. Add a line 10804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * (3 << CSI_SENS_CONF_SENS_PRTCL_SHIFT) | 10814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * below and select the required mode when supporting other 10824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * synchronisation protocols. 10834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 10844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf = csi_reg_read(mx3_cam, CSI_SENS_CONF) & 10854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ~((1 << CSI_SENS_CONF_VSYNC_POL_SHIFT) | 10864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (1 << CSI_SENS_CONF_HSYNC_POL_SHIFT) | 10874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (1 << CSI_SENS_CONF_DATA_POL_SHIFT) | 10884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT) | 10894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (3 << CSI_SENS_CONF_DATA_FMT_SHIFT) | 10904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT)); 10914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* TODO: Support RGB and YUV formats */ 10934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* This has been set in mx3_camera_activate(), but we clear it above */ 10954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= CSI_SENS_CONF_DATA_FMT_BAYER; 10964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1097579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING) 10984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; 1099579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW) 11004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; 1101579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW) 11024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; 1103579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (common_flags & V4L2_MBUS_DATA_ACTIVE_LOW) 11044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; 11054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Just do what we're asked to do */ 1107760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski switch (xlate->host_fmt->bits_per_sample) { 11084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 4: 11094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 11104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 11114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 8: 11124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 1 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 11134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 11144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 10: 11154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 2 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 11164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 11174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 11184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 11194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Actually it can only be 15 now, default is just to silence 11204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * compiler warnings 11214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 11224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 15: 11234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 11244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, sens_conf | dw, CSI_SENS_CONF); 11274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11280166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(dev, "Set SENS_CONF to %x\n", sens_conf | dw); 11294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 11314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 11324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic struct soc_camera_host_ops mx3_soc_camera_host_ops = { 11344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .owner = THIS_MODULE, 11354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .add = mx3_camera_add_device, 11364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .remove = mx3_camera_remove_device, 113709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski .set_crop = mx3_camera_set_crop, 11384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .set_fmt = mx3_camera_set_fmt, 11394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .try_fmt = mx3_camera_try_fmt, 11404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .get_formats = mx3_camera_get_formats, 1141379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski .init_videobuf2 = mx3_camera_init_videobuf, 11424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .reqbufs = mx3_camera_reqbufs, 11434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .poll = mx3_camera_poll, 11444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .querycap = mx3_camera_querycap, 11454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .set_bus_param = mx3_camera_set_bus_param, 11464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 11474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1148e36bc31f823d6089bedc935fea82b6d36793412aJean Delvarestatic int __devinit mx3_camera_probe(struct platform_device *pdev) 11494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 11504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam; 11514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct resource *res; 11524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski void __iomem *base; 11534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int err = 0; 11544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *soc_host; 11554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 11574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!res) { 11584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = -ENODEV; 11594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto egetres; 11604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1162101b25b55ec48354bc40b9102b4f7922c9ad9eaeJoe Perches mx3_cam = vzalloc(sizeof(*mx3_cam)); 11634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam) { 11644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_err(&pdev->dev, "Could not allocate mx3 camera object\n"); 11654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = -ENOMEM; 11664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto ealloc; 11674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1169b71df97a3ffdb2bfc286c3fa0c2b1a0aa3a6bf88Guennadi Liakhovetski mx3_cam->clk = clk_get(&pdev->dev, NULL); 11704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (IS_ERR(mx3_cam->clk)) { 11714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = PTR_ERR(mx3_cam->clk); 11724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto eclkget; 11734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->pdata = pdev->dev.platform_data; 11764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->platform_flags = mx3_cam->pdata->flags; 11774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!(mx3_cam->platform_flags & (MX3_CAMERA_DATAWIDTH_4 | 11784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski MX3_CAMERA_DATAWIDTH_8 | MX3_CAMERA_DATAWIDTH_10 | 11794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski MX3_CAMERA_DATAWIDTH_15))) { 11805d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski /* 11815d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski * Platform hasn't set available data widths. This is bad. 11825d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski * Warn and use a default. 11835d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski */ 11844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_warn(&pdev->dev, "WARNING! Platform hasn't set available " 11854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski "data widths, using default 8 bit\n"); 11864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->platform_flags |= MX3_CAMERA_DATAWIDTH_8; 11874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 1188579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4) 1189579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski mx3_cam->width_flags = 1 << 3; 1190579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) 1191579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski mx3_cam->width_flags |= 1 << 7; 1192579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) 1193579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski mx3_cam->width_flags |= 1 << 9; 1194579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) 1195579cea034237dcfdcac071faa3e00b4528ddf8ecGuennadi Liakhovetski mx3_cam->width_flags |= 1 << 14; 11964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->mclk = mx3_cam->pdata->mclk_10khz * 10000; 11984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam->mclk) { 11994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_warn(&pdev->dev, 12004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski "mclk_10khz == 0! Please, fix your platform data. " 12014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski "Using default 20MHz\n"); 12024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->mclk = 20000000; 12034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 12044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* list of video-buffers */ 12064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski INIT_LIST_HEAD(&mx3_cam->capture); 12074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_lock_init(&mx3_cam->lock); 12084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 120940e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski base = ioremap(res->start, resource_size(res)); 12104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!base) { 121140e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski pr_err("Couldn't map %x@%x\n", resource_size(res), res->start); 12124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = -ENOMEM; 12134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto eioremap; 12144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 12154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->base = base; 12174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host = &mx3_cam->soc_host; 12194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->drv_name = MX3_CAM_DRV_NAME; 12204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->ops = &mx3_soc_camera_host_ops; 12214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->priv = mx3_cam; 1222979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski soc_host->v4l2_dev.dev = &pdev->dev; 12234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->nr = pdev->id; 1224eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski 1225379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski mx3_cam->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); 1226379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski if (IS_ERR(mx3_cam->alloc_ctx)) { 1227379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski err = PTR_ERR(mx3_cam->alloc_ctx); 1228379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski goto eallocctx; 1229379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski } 1230379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 12314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = soc_camera_host_register(soc_host); 12324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (err) 12334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto ecamhostreg; 12344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* IDMAC interface */ 12364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dmaengine_get(); 12374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 12394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiecamhostreg: 1241379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski vb2_dma_contig_cleanup_ctx(mx3_cam->alloc_ctx); 1242379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetskieallocctx: 12434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski iounmap(base); 12444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskieioremap: 12454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_put(mx3_cam->clk); 12464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskieclkget: 12474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vfree(mx3_cam); 12484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiealloc: 12494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiegetres: 12504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return err; 12514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 12524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int __devexit mx3_camera_remove(struct platform_device *pdev) 12544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1255eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); 1256eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = container_of(soc_host, 1257eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski struct mx3_camera_dev, soc_host); 12584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_put(mx3_cam->clk); 12604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1261eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski soc_camera_host_unregister(soc_host); 12624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski iounmap(mx3_cam->base); 12644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 12664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * The channel has either not been allocated, 12674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * or should have been released 12684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 12694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (WARN_ON(mx3_cam->idmac_channel[0])) 12704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dma_release_channel(&mx3_cam->idmac_channel[0]->dma_chan); 12714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1272379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski vb2_dma_contig_cleanup_ctx(mx3_cam->alloc_ctx); 1273379fa5d3567ca2c20843bdba06e456de51b195e9Guennadi Liakhovetski 12744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vfree(mx3_cam); 12754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dmaengine_put(); 12774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 12794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 12804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic struct platform_driver mx3_camera_driver = { 12824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .driver = { 12834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .name = MX3_CAM_DRV_NAME, 12844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski }, 12854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .probe = mx3_camera_probe, 1286e36bc31f823d6089bedc935fea82b6d36793412aJean Delvare .remove = __devexit_p(mx3_camera_remove), 12874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 12884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12891d6629b1561ad34a6e6d17ece00bd65e1bab3724Axel Linmodule_platform_driver(mx3_camera_driver); 12904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi LiakhovetskiMODULE_DESCRIPTION("i.MX3x SoC Camera Host driver"); 12924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi LiakhovetskiMODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>"); 12934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi LiakhovetskiMODULE_LICENSE("GPL v2"); 129464dc3c1a906467d90c24913b0b38dd13d9378f4fMauro Carvalho ChehabMODULE_VERSION("0.2.3"); 129540e2e0927003424c25807b575dd40da2b8685857Guennadi LiakhovetskiMODULE_ALIAS("platform:" MX3_CAM_DRV_NAME); 1296