mx3_camera.c revision f39c1ab3c3878f1a50ca129e55d17ae63215fcbe
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/version.h> 154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/videodev2.h> 164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/platform_device.h> 174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/clk.h> 184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/vmalloc.h> 194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <linux/interrupt.h> 20f39c1ab3c3878f1a50ca129e55d17ae63215fcbeGuennadi Liakhovetski#include <linux/sched.h> 214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <media/v4l2-common.h> 234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <media/v4l2-dev.h> 244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <media/videobuf-dma-contig.h> 254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <media/soc_camera.h> 264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <mach/ipu.h> 284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <mach/mx3_camera.h> 294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define MX3_CAM_DRV_NAME "mx3-camera" 314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* CMOS Sensor Interface Registers */ 334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_REG_START 0x60 344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF (0x60 - CSI_REG_START) 364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_FRM_SIZE (0x64 - CSI_REG_START) 374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_ACT_FRM_SIZE (0x68 - CSI_REG_START) 384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_OUT_FRM_CTRL (0x6C - CSI_REG_START) 394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_TST_CTRL (0x70 - CSI_REG_START) 404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_CCIR_CODE_1 (0x74 - CSI_REG_START) 414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_CCIR_CODE_2 (0x78 - CSI_REG_START) 424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_CCIR_CODE_3 (0x7C - CSI_REG_START) 434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_FLASH_STROBE_1 (0x80 - CSI_REG_START) 444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_FLASH_STROBE_2 (0x84 - CSI_REG_START) 454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_VSYNC_POL_SHIFT 0 474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_HSYNC_POL_SHIFT 1 484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_POL_SHIFT 2 494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_PIX_CLK_POL_SHIFT 3 504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_SENS_PRTCL_SHIFT 4 514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_SENS_CLKSRC_SHIFT 7 524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_SHIFT 8 534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_WIDTH_SHIFT 10 544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_EXT_VSYNC_SHIFT 15 554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DIVRATIO_SHIFT 16 564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_RGB_YUV444 (0UL << CSI_SENS_CONF_DATA_FMT_SHIFT) 584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_YUV422 (2UL << CSI_SENS_CONF_DATA_FMT_SHIFT) 594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_BAYER (3UL << CSI_SENS_CONF_DATA_FMT_SHIFT) 604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define MAX_VIDEO_MEM 16 624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistruct mx3_camera_buffer { 644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* common v4l buffer stuff -- must be first */ 654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer vb; 664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const struct soc_camera_data_format *fmt; 674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* One descriptot per scatterlist (per frame) */ 694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_async_tx_descriptor *txd; 704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* We have to "build" a scatterlist ourselves - one element per frame */ 724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct scatterlist sg; 734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/** 764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * struct mx3_camera_dev - i.MX3x camera (CSI) object 774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @dev: camera device, to which the coherent buffer is attached 784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @icd: currently attached camera sensor 794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @clk: pointer to clock 804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @base: remapped register base address 814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @pdata: platform data 824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @platform_flags: platform flags 834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @mclk: master clock frequency in Hz 844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @capture: list of capture videobuffers 854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @lock: protects video buffer lists 864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @active: active video buffer 874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @idmac_channel: array of pointers to IPU DMAC DMA channels 884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @soc_host: embedded soc_host object 894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistruct mx3_camera_dev { 914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * i.MX3x is only supposed to handle one camera on its Camera Sensor 934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Interface. If anyone ever builds hardware to enable more than one 944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * camera _simultaneously_, they will have to modify this driver too 954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd; 974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct clk *clk; 984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski void __iomem *base; 1004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_pdata *pdata; 1024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long platform_flags; 1044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long mclk; 1054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct list_head capture; 1074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spinlock_t lock; /* Protects video buffer lists */ 1084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer *active; 1094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* IDMAC / dmaengine interface */ 1114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *idmac_channel[1]; /* We need one channel */ 1124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host soc_host; 1144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 1154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistruct dma_chan_request { 1174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam; 1184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski enum ipu_channel id; 1194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 1204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt); 1224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic u32 csi_reg_read(struct mx3_camera_dev *mx3, off_t reg) 1244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return __raw_readl(mx3->base + reg); 1264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void csi_reg_write(struct mx3_camera_dev *mx3, u32 value, off_t reg) 1294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski __raw_writel(value, mx3->base + reg); 1314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called from the IPU IDMAC ISR */ 1344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_cam_dma_done(void *arg) 1354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_tx_desc *desc = to_tx_desc(arg); 1374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_chan *chan = desc->txd.chan; 1384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichannel = to_idmac_chan(chan); 1394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ichannel->client; 1404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer *vb; 1414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_dbg(chan->device->dev, "callback cookie %d, active DMA 0x%08x\n", 1434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski desc->txd.cookie, mx3_cam->active ? sg_dma_address(&mx3_cam->active->sg) : 0); 1444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_lock(&mx3_cam->lock); 1464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->active) { 1474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb = &mx3_cam->active->vb; 1484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski list_del_init(&vb->queue); 1504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_DONE; 1514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski do_gettimeofday(&vb->ts); 1524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->field_count++; 1534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski wake_up(&vb->done); 1544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 1554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (list_empty(&mx3_cam->capture)) { 1574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = NULL; 1584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_unlock(&mx3_cam->lock); 1594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 1614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * stop capture - without further buffers IPU_CHA_BUF0_RDY will 1624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * not get updated 1634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 1644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return; 1654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 1664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = list_entry(mx3_cam->capture.next, 1684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer, vb.queue); 1694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active->vb.state = VIDEOBUF_ACTIVE; 1704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_unlock(&mx3_cam->lock); 1714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void free_buffer(struct videobuf_queue *vq, struct mx3_camera_buffer *buf) 1744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd = vq->priv_data; 1764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer *vb = &buf->vb; 1774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_async_tx_descriptor *txd = buf->txd; 1784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichan; 1794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski BUG_ON(in_interrupt()); 1814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1820166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__, 1834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb, vb->baddr, vb->bsize); 1844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 1864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * This waits until this buffer is out of danger, i.e., until it is no 1874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * longer in STATE_QUEUED or STATE_ACTIVE 1884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 1894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski videobuf_waiton(vb, 0, 0); 1904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (txd) { 1914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ichan = to_idmac_chan(txd->chan); 1924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski async_tx_ack(txd); 1934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 1944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski videobuf_dma_contig_free(vq, vb); 1954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski buf->txd = NULL; 1964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_NEEDS_INIT; 1984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* 2014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Videobuf operations 2024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* 2054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Calculate the __buffer__ (not data) size and number of buffers. 2064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Called with .vb_lock held 2074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_videobuf_setup(struct videobuf_queue *vq, unsigned int *count, 2094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned int *size) 2104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 2114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd = vq->priv_data; 2124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 2134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 2144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 2154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * bits-per-pixel (depth) as specified in camera's pixel format does 2164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * not necessarily match what the camera interface writes to RAM, but 2174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * it should be good enough for now. 2184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned int bpp = DIV_ROUND_UP(icd->current_fmt->depth, 8); 2204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam->idmac_channel[0]) 2224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 2234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2246a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski *size = icd->user_width * icd->user_height * bpp; 2254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!*count) 2274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *count = 32; 2284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (*size * *count > MAX_VIDEO_MEM * 1024 * 1024) 2304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *count = MAX_VIDEO_MEM * 1024 * 1024 / *size; 2314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 2334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 2344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called with .vb_lock held */ 2364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_videobuf_prepare(struct videobuf_queue *vq, 2374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer *vb, enum v4l2_field field) 2384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 2394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd = vq->priv_data; 2404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 2414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 2424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer *buf = 2434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski container_of(vb, struct mx3_camera_buffer, vb); 2444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* current_fmt _must_ always be set */ 2456a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski size_t new_size = icd->user_width * icd->user_height * 2464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ((icd->current_fmt->depth + 7) >> 3); 2474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int ret; 2484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 2504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * I think, in buf_prepare you only have to protect global data, 2514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * the actual buffer is yours 2524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (buf->fmt != icd->current_fmt || 2556a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski vb->width != icd->user_width || 2566a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski vb->height != icd->user_height || 2574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->field != field) { 2584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski buf->fmt = icd->current_fmt; 2596a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski vb->width = icd->user_width; 2606a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski vb->height = icd->user_height; 2614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->field = field; 2624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (vb->state != VIDEOBUF_NEEDS_INIT) 2634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski free_buffer(vq, buf); 2644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 2654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (vb->baddr && vb->bsize < new_size) { 2674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* User provided buffer, but it is too small */ 2684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = -ENOMEM; 2694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto out; 2704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 2714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (vb->state == VIDEOBUF_NEEDS_INIT) { 2734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichan = mx3_cam->idmac_channel[0]; 2744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct scatterlist *sg = &buf->sg; 2754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 2774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * The total size of video-buffers that will be allocated / mapped. 2784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * *size that we calculated in videobuf_setup gets assigned to 2794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * vb->bsize, and now we use the same calculation to get vb->size. 2804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->size = new_size; 2824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* This actually (allocates and) maps buffers */ 2844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = videobuf_iolock(vq, vb, NULL); 2854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret) 2864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto fail; 2874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 2894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * We will have to configure the IDMAC channel. It has two slots 2904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * for DMA buffers, we shall enter the first two buffers there, 2914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * and then submit new buffers in DMA-ready interrupts 2924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sg_init_table(sg, 1); 2944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sg_dma_address(sg) = videobuf_to_dma_contig(vb); 2954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sg_dma_len(sg) = vb->size; 2964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski buf->txd = ichan->dma_chan.device->device_prep_slave_sg( 2984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski &ichan->dma_chan, sg, 1, DMA_FROM_DEVICE, 2994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski DMA_PREP_INTERRUPT); 3004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!buf->txd) { 3014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = -EIO; 3024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto fail; 3034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 3044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski buf->txd->callback_param = buf->txd; 3064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski buf->txd->callback = mx3_cam_dma_done; 3074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_PREPARED; 3094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 3104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 3124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskifail: 3144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski free_buffer(vq, buf); 3154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiout: 3164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 3174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 3184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic enum pixel_fmt fourcc_to_ipu_pix(__u32 fourcc) 3204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 3214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Add more formats as need arises and test possibilities appear... */ 3224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski switch (fourcc) { 3234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_RGB565: 3244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_RGB565; 3254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_RGB24: 3264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_RGB24; 3274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_RGB332: 3284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_RGB332; 3294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_YUV422P: 3304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_YVU422P; 3314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 3324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_GENERIC; 3334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 3344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 3354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3362dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski/* 3372dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski * Called with .vb_lock mutex held and 3382dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski * under spinlock_irqsave(&mx3_cam->lock, ...) 3392dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski */ 3404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_videobuf_queue(struct videobuf_queue *vq, 3414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer *vb) 3424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 3434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd = vq->priv_data; 3444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 3454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 3464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer *buf = 3474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski container_of(vb, struct mx3_camera_buffer, vb); 3484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_async_tx_descriptor *txd = buf->txd; 3494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichan = to_idmac_chan(txd->chan); 3504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_video_param *video = &ichan->params.video; 3514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const struct soc_camera_data_format *data_fmt = icd->current_fmt; 3524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dma_cookie_t cookie; 3532dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski 3542dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski BUG_ON(!irqs_disabled()); 3554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* This is the configuration of one sg-element */ 3574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski video->out_pixel_fmt = fourcc_to_ipu_pix(data_fmt->fourcc); 3586a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski video->out_width = icd->user_width; 3596a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski video->out_height = icd->user_height; 3606a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski video->out_stride = icd->user_width; 3614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#ifdef DEBUG 3634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* helps to see what DMA actually has written */ 3644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski memset((void *)vb->baddr, 0xaa, vb->bsize); 3654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#endif 3664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski list_add_tail(&vb->queue, &mx3_cam->capture); 3684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam->active) { 3704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = buf; 3714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_ACTIVE; 3724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } else { 3734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_QUEUED; 3744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 3754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3762dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski spin_unlock_irq(&mx3_cam->lock); 3774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski cookie = txd->tx_submit(txd); 3790166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(icd->dev.parent, "Submitted cookie %d DMA 0x%08x\n", 3800166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski cookie, sg_dma_address(&buf->sg)); 3812dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski 3822dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski spin_lock_irq(&mx3_cam->lock); 3832dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski 3844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (cookie >= 0) 3854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return; 3864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Submit error */ 3884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_PREPARED; 3894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski list_del_init(&vb->queue); 3914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->active == buf) 3934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = NULL; 3944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 3954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called with .vb_lock held */ 3974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_videobuf_release(struct videobuf_queue *vq, 3984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer *vb) 3994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 4004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd = vq->priv_data; 4014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 4024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 4034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer *buf = 4044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski container_of(vb, struct mx3_camera_buffer, vb); 4054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long flags; 4064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4070166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(icd->dev.parent, 4080166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski "Release%s DMA 0x%08x (state %d), queue %sempty\n", 4094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active == buf ? " active" : "", sg_dma_address(&buf->sg), 4100166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski vb->state, list_empty(&vb->queue) ? "" : "not "); 4114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_lock_irqsave(&mx3_cam->lock, flags); 4124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) && 4134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski !list_empty(&vb->queue)) { 4144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_ERROR; 4154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski list_del_init(&vb->queue); 4174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->active == buf) 4184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = NULL; 4194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 4204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_unlock_irqrestore(&mx3_cam->lock, flags); 4214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski free_buffer(vq, buf); 4224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 4234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic struct videobuf_queue_ops mx3_videobuf_ops = { 4254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .buf_setup = mx3_videobuf_setup, 4264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .buf_prepare = mx3_videobuf_prepare, 4274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .buf_queue = mx3_videobuf_queue, 4284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .buf_release = mx3_videobuf_release, 4294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 4304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_camera_init_videobuf(struct videobuf_queue *q, 4324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd) 4334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 4344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 4354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 4364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 437979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski videobuf_queue_dma_contig_init(q, &mx3_videobuf_ops, icd->dev.parent, 4384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski &mx3_cam->lock, 4394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski V4L2_BUF_TYPE_VIDEO_CAPTURE, 4404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski V4L2_FIELD_NONE, 4414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sizeof(struct mx3_camera_buffer), icd); 4424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 4434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* First part of ipu_csi_init_interface() */ 4454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_camera_activate(struct mx3_camera_dev *mx3_cam, 4464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd) 4474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 4484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski u32 conf; 4494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski long rate; 4504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Set default size: ipu_csi_set_window_size() */ 4524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, (640 - 1) | ((480 - 1) << 16), CSI_ACT_FRM_SIZE); 4534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* ...and position to 0:0: ipu_csi_set_window_pos() */ 4544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf = csi_reg_read(mx3_cam, CSI_OUT_FRM_CTRL) & 0xffff0000; 4554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, conf, CSI_OUT_FRM_CTRL); 4564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* We use only gated clock synchronisation mode so far */ 4584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf = 0 << CSI_SENS_CONF_SENS_PRTCL_SHIFT; 4594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Set generic data, platform-biggest bus-width */ 4614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= CSI_SENS_CONF_DATA_FMT_BAYER; 4624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) 4644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) 4664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 2 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) 4684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else/* if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4)*/ 4704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_CLK_SRC) 4734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_SENS_CLKSRC_SHIFT; 4744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_EXT_VSYNC) 4754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_EXT_VSYNC_SHIFT; 4764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DP) 4774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; 4784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_PCP) 4794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; 4804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_HSP) 4814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; 4824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_VSP) 4834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; 4844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* ipu_csi_init_interface() */ 4864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, conf, CSI_SENS_CONF); 4874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_enable(mx3_cam->clk); 4894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski rate = clk_round_rate(mx3_cam->clk, mx3_cam->mclk); 4900166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(icd->dev.parent, "Set SENS_CONF to %x, rate %ld\n", conf, rate); 4914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (rate) 4924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_set_rate(mx3_cam->clk, rate); 4934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 4944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called with .video_lock held */ 4964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_add_device(struct soc_camera_device *icd) 4974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 4984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 4994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 5004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 501979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski if (mx3_cam->icd) 502979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski return -EBUSY; 5034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_camera_activate(mx3_cam, icd); 5054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->icd = icd; 5074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5080166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_info(icd->dev.parent, "MX3 Camera driver attached to camera %d\n", 50940e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski icd->devnum); 51040e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski 51140e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski return 0; 5124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 5134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called with .video_lock held */ 5154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_camera_remove_device(struct soc_camera_device *icd) 5164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 5174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 5184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 5194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel **ichan = &mx3_cam->idmac_channel[0]; 5204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski BUG_ON(icd != mx3_cam->icd); 5224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (*ichan) { 5244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dma_release_channel(&(*ichan)->dma_chan); 5254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *ichan = NULL; 5264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 5274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_disable(mx3_cam->clk); 5294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->icd = NULL; 5314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5320166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_info(icd->dev.parent, "MX3 Camera driver detached from camera %d\n", 5334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski icd->devnum); 5344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 5354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic bool channel_change_requested(struct soc_camera_device *icd, 53709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct v4l2_rect *rect) 5384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 5394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 5404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 5414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichan = mx3_cam->idmac_channel[0]; 5424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 54309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski /* Do buffers have to be re-allocated or channel re-configured? */ 544a0705b07f1816ae2b85388fcda71de69c221b4b8Guennadi Liakhovetski return ichan && rect->width * rect->height > 5456a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski icd->user_width * icd->user_height; 5464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 5474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int test_platform_param(struct mx3_camera_dev *mx3_cam, 5494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned char buswidth, unsigned long *flags) 5504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 5514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 5524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Platform specified synchronization and pixel clock polarities are 5534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * only a recommendation and are only used during probing. MX3x 5544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * camera interface only works in master mode, i.e., uses HSYNC and 5554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * VSYNC signals from the sensor 5564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 5574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *flags = SOCAM_MASTER | 5584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_HSYNC_ACTIVE_HIGH | 5594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_HSYNC_ACTIVE_LOW | 5604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_VSYNC_ACTIVE_HIGH | 5614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_VSYNC_ACTIVE_LOW | 5624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_PCLK_SAMPLE_RISING | 5634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_PCLK_SAMPLE_FALLING | 5644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATA_ACTIVE_HIGH | 5654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATA_ACTIVE_LOW; 5664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* If requested data width is supported by the platform, use it or any 5684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * possible lower value - i.MX31 is smart enough to schift bits */ 5694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski switch (buswidth) { 5704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 15: 5714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15)) 5724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 5734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *flags |= SOCAM_DATAWIDTH_15 | SOCAM_DATAWIDTH_10 | 5744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4; 5754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 5764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 10: 5774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10)) 5784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 5794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *flags |= SOCAM_DATAWIDTH_10 | SOCAM_DATAWIDTH_8 | 5804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATAWIDTH_4; 5814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 5824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 8: 5834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8)) 5844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 5854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *flags |= SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4; 5864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 5874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 4: 5884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4)) 5894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 5904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *flags |= SOCAM_DATAWIDTH_4; 5914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 5924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 5936a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski dev_warn(mx3_cam->soc_host.v4l2_dev.dev, 5946a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski "Unsupported bus width %d\n", buswidth); 5954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 5964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 5974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 5994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_try_bus_param(struct soc_camera_device *icd, 6024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const unsigned int depth) 6034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 6044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 6054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 6064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long bus_flags, camera_flags; 6074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int ret = test_platform_param(mx3_cam, depth, &bus_flags); 6084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6096a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski dev_dbg(icd->dev.parent, "request bus width %d bit: %d\n", depth, ret); 6104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 6124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 6134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski camera_flags = icd->ops->query_bus_param(icd); 6154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = soc_camera_bus_param_compatible(camera_flags, bus_flags); 6174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 6180166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_warn(icd->dev.parent, 6190166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski "Flags incompatible: camera %lx, host %lx\n", 6204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski camera_flags, bus_flags); 6214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 6234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic bool chan_filter(struct dma_chan *chan, void *arg) 6264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 6274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_chan_request *rq = arg; 6284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_pdata *pdata; 6294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!rq) 6314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return false; 6324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 633979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski pdata = rq->mx3_cam->soc_host.v4l2_dev.dev->platform_data; 6344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return rq->id == chan->chan_id && 6364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pdata->dma_dev == chan->device->dev; 6374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic const struct soc_camera_data_format mx3_camera_formats[] = { 6404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski { 6414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .name = "Bayer (sRGB) 8 bit", 6424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .depth = 8, 6434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .fourcc = V4L2_PIX_FMT_SBGGR8, 6444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .colorspace = V4L2_COLORSPACE_SRGB, 6454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski }, { 6464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .name = "Monochrome 8 bit", 6474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .depth = 8, 6484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .fourcc = V4L2_PIX_FMT_GREY, 6494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .colorspace = V4L2_COLORSPACE_JPEG, 6504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski }, 6514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 6524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic bool buswidth_supported(struct soc_camera_host *ici, int depth) 6544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 6554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 6564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski switch (depth) { 6584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 4: 6594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return !!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4); 6604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 8: 6614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return !!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8); 6624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 10: 6634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return !!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10); 6644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 15: 6654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return !!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15); 6664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 6674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return false; 6684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_get_formats(struct soc_camera_device *icd, int idx, 6714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_format_xlate *xlate) 6724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 6734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 6744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int formats = 0, buswidth, ret; 6754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski buswidth = icd->formats[idx].depth; 6774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!buswidth_supported(ici, buswidth)) 6794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 6804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = mx3_camera_try_bus_param(icd, buswidth); 6824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 6834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 6844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski switch (icd->formats[idx].fourcc) { 6864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_SGRBG10: 6874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski formats++; 6884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (xlate) { 6894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate->host_fmt = &mx3_camera_formats[0]; 6904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate->cam_fmt = icd->formats + idx; 6914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate->buswidth = buswidth; 6924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate++; 6930166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(icd->dev.parent, 6940166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski "Providing format %s using %s\n", 6954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_camera_formats[0].name, 6964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski icd->formats[idx].name); 6974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 6984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto passthrough; 6994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_Y16: 7004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski formats++; 7014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (xlate) { 7024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate->host_fmt = &mx3_camera_formats[1]; 7034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate->cam_fmt = icd->formats + idx; 7044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate->buswidth = buswidth; 7054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate++; 7060166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(icd->dev.parent, 7070166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski "Providing format %s using %s\n", 7084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_camera_formats[0].name, 7094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski icd->formats[idx].name); 7104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 7114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 7124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskipassthrough: 7134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Generic pass-through */ 7144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski formats++; 7154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (xlate) { 7164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate->host_fmt = icd->formats + idx; 7174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate->cam_fmt = icd->formats + idx; 7184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate->buswidth = buswidth; 7194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate++; 720979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski dev_dbg(icd->dev.parent, 7214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski "Providing format %s in pass-through mode\n", 7224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski icd->formats[idx].name); 7234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 7244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 7254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return formats; 7274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 7284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 72909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic void configure_geometry(struct mx3_camera_dev *mx3_cam, 7306a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski unsigned int width, unsigned int height) 7314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 7324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski u32 ctrl, width_field, height_field; 7334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Setup frame size - this cannot be changed on-the-fly... */ 7356a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski width_field = width - 1; 7366a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski height_field = height - 1; 7374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, width_field | (height_field << 16), CSI_SENS_FRM_SIZE); 7384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, width_field << 16, CSI_FLASH_STROBE_1); 7404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, (height_field << 16) | 0x22, CSI_FLASH_STROBE_2); 7414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, width_field | (height_field << 16), CSI_ACT_FRM_SIZE); 7434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* ...and position */ 7454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ctrl = csi_reg_read(mx3_cam, CSI_OUT_FRM_CTRL) & 0xffff0000; 7464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Sensor does the cropping */ 7474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, ctrl | 0 | (0 << 8), CSI_OUT_FRM_CTRL); 74809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski} 74909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 75009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic int acquire_dma_channel(struct mx3_camera_dev *mx3_cam) 75109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski{ 75209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_mask_t mask; 75309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct dma_chan *chan; 75409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct idmac_channel **ichan = &mx3_cam->idmac_channel[0]; 75509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski /* We have to use IDMAC_IC_7 for Bayer / generic data */ 75609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct dma_chan_request rq = {.mx3_cam = mx3_cam, 75709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski .id = IDMAC_IC_7}; 75809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 75909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (*ichan) { 76009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct videobuf_buffer *vb, *_vb; 76109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_release_channel(&(*ichan)->dma_chan); 76209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski *ichan = NULL; 76309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski mx3_cam->active = NULL; 76409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski list_for_each_entry_safe(vb, _vb, &mx3_cam->capture, queue) { 76509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski list_del_init(&vb->queue); 76609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski vb->state = VIDEOBUF_ERROR; 76709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski wake_up(&vb->done); 76809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski } 76909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski } 77009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 77109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_zero(mask); 77209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_set(DMA_SLAVE, mask); 77309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_set(DMA_PRIVATE, mask); 77409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski chan = dma_request_channel(mask, chan_filter, &rq); 77509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (!chan) 77609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return -EBUSY; 77709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 77809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski *ichan = to_idmac_chan(chan); 77909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski (*ichan)->client = mx3_cam; 78009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 78109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return 0; 78209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski} 78309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 7846a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski/* 7856a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * FIXME: learn to use stride != width, then we can keep stride properly aligned 7866a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * and support arbitrary (even) widths. 7876a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski */ 7886a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetskistatic inline void stride_align(__s32 *width) 7896a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski{ 7906a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (((*width + 7) & ~7) < 4096) 7916a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski *width = (*width + 7) & ~7; 7926a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski else 7936a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski *width = *width & ~7; 7946a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski} 7956a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 7966a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski/* 7976a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * As long as we don't implement host-side cropping and scaling, we can use 7986a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * default g_crop and cropcap from soc_camera.c 7996a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski */ 80009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic int mx3_camera_set_crop(struct soc_camera_device *icd, 80108590b9613f7f624fe3a052586eea2dbb3584b38Guennadi Liakhovetski struct v4l2_crop *a) 80209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski{ 80308590b9613f7f624fe3a052586eea2dbb3584b38Guennadi Liakhovetski struct v4l2_rect *rect = &a->c; 80409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 80509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 806c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 8076a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski struct v4l2_format f = {.type = V4L2_BUF_TYPE_VIDEO_CAPTURE}; 8086a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski struct v4l2_pix_format *pix = &f.fmt.pix; 8096a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski int ret; 81009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 8116a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096); 8126a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096); 8136a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8146a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, s_crop, a); 8156a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (ret < 0) 8166a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 8176a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8186a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski /* The capture device might have changed its output */ 8196a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, g_fmt, &f); 8206a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (ret < 0) 8216a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 8226a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8236a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (pix->width & 7) { 8246a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski /* Ouch! We can only handle 8-byte aligned width... */ 8256a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski stride_align(&pix->width); 8266a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, s_fmt, &f); 82709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (ret < 0) 82809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return ret; 82909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski } 83009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 8316a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (pix->width != icd->user_width || pix->height != icd->user_height) { 8326a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski /* 8336a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * We now know pixel formats and can decide upon DMA-channel(s) 8346a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * So far only direct camera-to-memory is supported 8356a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski */ 8366a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (channel_change_requested(icd, rect)) { 8376a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski int ret = acquire_dma_channel(mx3_cam); 8386a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (ret < 0) 8396a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 8406a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski } 84109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 8426a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski configure_geometry(mx3_cam, pix->width, pix->height); 8436a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski } 8446a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8456a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski dev_dbg(icd->dev.parent, "Sensor cropped %dx%d\n", 8466a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski pix->width, pix->height); 8476a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8486a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski icd->user_width = pix->width; 8496a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski icd->user_height = pix->height; 8506a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8516a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 85209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski} 85309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 85409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic int mx3_camera_set_fmt(struct soc_camera_device *icd, 85509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct v4l2_format *f) 85609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski{ 85709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 85809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 859c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 86009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski const struct soc_camera_format_xlate *xlate; 86109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct v4l2_pix_format *pix = &f->fmt.pix; 86209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski int ret; 86309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 86409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); 86509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (!xlate) { 8660166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_warn(icd->dev.parent, "Format %x not found\n", 8670166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski pix->pixelformat); 86809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return -EINVAL; 86909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski } 87009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 8716a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski stride_align(&pix->width); 8726a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski dev_dbg(icd->dev.parent, "Set format %dx%d\n", pix->width, pix->height); 8736a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 87409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski ret = acquire_dma_channel(mx3_cam); 87509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (ret < 0) 87609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return ret; 87709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 87809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski /* 87909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski * Might have to perform a complete interface initialisation like in 88009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski * ipu_csi_init_interface() in mxc_v4l2_s_param(). Also consider 88109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski * mxc_v4l2_s_fmt() 88209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski */ 88309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 8846a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski configure_geometry(mx3_cam, pix->width, pix->height); 8854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 886c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski ret = v4l2_subdev_call(sd, video, s_fmt, f); 88709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (!ret) { 8884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski icd->buswidth = xlate->buswidth; 8894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski icd->current_fmt = xlate->host_fmt; 8904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 8914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 8926a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski dev_dbg(icd->dev.parent, "Sensor set %dx%d\n", pix->width, pix->height); 8936a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 8954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 8964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 8974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_try_fmt(struct soc_camera_device *icd, 8984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_format *f) 8994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 900c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 9014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const struct soc_camera_format_xlate *xlate; 9024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_pix_format *pix = &f->fmt.pix; 9034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski __u32 pixfmt = pix->pixelformat; 9044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski enum v4l2_field field; 9054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int ret; 9064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); 9084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (pixfmt && !xlate) { 909979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); 9104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 9114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 9124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* limit to MX3 hardware capabilities */ 9144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (pix->height > 4096) 9154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->height = 4096; 9164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (pix->width > 4096) 9174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->width = 4096; 9184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->bytesperline = pix->width * 9204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski DIV_ROUND_UP(xlate->host_fmt->depth, 8); 9214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->sizeimage = pix->height * pix->bytesperline; 9224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* camera has to see its format, but the user the original one */ 9244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->pixelformat = xlate->cam_fmt->fourcc; 9254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* limit to sensor capabilities */ 926c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski ret = v4l2_subdev_call(sd, video, try_fmt, f); 9274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->pixelformat = xlate->host_fmt->fourcc; 9284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski field = pix->field; 9304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (field == V4L2_FIELD_ANY) { 9324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->field = V4L2_FIELD_NONE; 9334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } else if (field != V4L2_FIELD_NONE) { 9340166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_err(icd->dev.parent, "Field type %d unsupported.\n", field); 9354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 9364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 9374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 9394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_reqbufs(struct soc_camera_file *icf, 9424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_requestbuffers *p) 9434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 9444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 9454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic unsigned int mx3_camera_poll(struct file *file, poll_table *pt) 9484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 9494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_file *icf = file->private_data; 9504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return videobuf_poll_stream(file, &icf->vb_vidq, pt); 9524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_querycap(struct soc_camera_host *ici, 9554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_capability *cap) 9564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 9574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* cap->name is set by the firendly caller:-> */ 9584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski strlcpy(cap->card, "i.MX3x Camera", sizeof(cap->card)); 9594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski cap->version = KERNEL_VERSION(0, 2, 2); 9604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 9614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 9634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt) 9664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 9674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 9684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 9694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long bus_flags, camera_flags, common_flags; 9704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski u32 dw, sens_conf; 9714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int ret = test_platform_param(mx3_cam, icd->buswidth, &bus_flags); 9724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const struct soc_camera_format_xlate *xlate; 9730166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski struct device *dev = icd->dev.parent; 9744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); 9764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!xlate) { 9770166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_warn(dev, "Format %x not found\n", pixfmt); 9784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 9794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 9804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9810166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(dev, "requested bus width %d bit: %d\n", 9824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski icd->buswidth, ret); 9834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 9854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 9864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski camera_flags = icd->ops->query_bus_param(icd); 9884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags = soc_camera_bus_param_compatible(camera_flags, bus_flags); 9900166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(dev, "Flags cam: 0x%lx host: 0x%lx common: 0x%lx\n", 99140e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski camera_flags, bus_flags, common_flags); 9924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!common_flags) { 9930166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(dev, "no common flags"); 9944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 9954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 9964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Make choices, based on platform preferences */ 9984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && 9994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { 10004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_HSP) 10014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; 10024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 10034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; 10044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && 10074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { 10084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_VSP) 10094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; 10104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 10114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; 10124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if ((common_flags & SOCAM_DATA_ACTIVE_HIGH) && 10154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (common_flags & SOCAM_DATA_ACTIVE_LOW)) { 10164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DP) 10174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_DATA_ACTIVE_HIGH; 10184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 10194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_DATA_ACTIVE_LOW; 10204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if ((common_flags & SOCAM_PCLK_SAMPLE_RISING) && 10234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (common_flags & SOCAM_PCLK_SAMPLE_FALLING)) { 10244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_PCP) 10254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_PCLK_SAMPLE_RISING; 10264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 10274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_PCLK_SAMPLE_FALLING; 10284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Make the camera work in widest common mode, we'll take care of 10314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * the rest */ 10324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (common_flags & SOCAM_DATAWIDTH_15) 10334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | 10344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATAWIDTH_15; 10354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else if (common_flags & SOCAM_DATAWIDTH_10) 10364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | 10374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATAWIDTH_10; 10384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else if (common_flags & SOCAM_DATAWIDTH_8) 10394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | 10404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATAWIDTH_8; 10414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 10424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | 10434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATAWIDTH_4; 10444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = icd->ops->set_bus_param(icd, common_flags); 104640e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski if (ret < 0) { 10470166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(dev, "camera set_bus_param(%lx) returned %d\n", 104840e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski common_flags, ret); 10494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 105040e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski } 10514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 10534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * So far only gated clock mode is supported. Add a line 10544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * (3 << CSI_SENS_CONF_SENS_PRTCL_SHIFT) | 10554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * below and select the required mode when supporting other 10564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * synchronisation protocols. 10574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 10584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf = csi_reg_read(mx3_cam, CSI_SENS_CONF) & 10594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ~((1 << CSI_SENS_CONF_VSYNC_POL_SHIFT) | 10604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (1 << CSI_SENS_CONF_HSYNC_POL_SHIFT) | 10614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (1 << CSI_SENS_CONF_DATA_POL_SHIFT) | 10624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT) | 10634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (3 << CSI_SENS_CONF_DATA_FMT_SHIFT) | 10644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT)); 10654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* TODO: Support RGB and YUV formats */ 10674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* This has been set in mx3_camera_activate(), but we clear it above */ 10694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= CSI_SENS_CONF_DATA_FMT_BAYER; 10704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (common_flags & SOCAM_PCLK_SAMPLE_FALLING) 10724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; 10734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (common_flags & SOCAM_HSYNC_ACTIVE_LOW) 10744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; 10754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (common_flags & SOCAM_VSYNC_ACTIVE_LOW) 10764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; 10774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (common_flags & SOCAM_DATA_ACTIVE_LOW) 10784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; 10794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Just do what we're asked to do */ 10814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski switch (xlate->host_fmt->depth) { 10824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 4: 10834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 10844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 10854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 8: 10864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 1 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 10874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 10884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 10: 10894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 2 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 10904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 10914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 10924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 10934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Actually it can only be 15 now, default is just to silence 10944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * compiler warnings 10954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 10964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 15: 10974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 10984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, sens_conf | dw, CSI_SENS_CONF); 11014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11020166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(dev, "Set SENS_CONF to %x\n", sens_conf | dw); 11034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 11054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 11064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic struct soc_camera_host_ops mx3_soc_camera_host_ops = { 11084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .owner = THIS_MODULE, 11094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .add = mx3_camera_add_device, 11104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .remove = mx3_camera_remove_device, 111109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski .set_crop = mx3_camera_set_crop, 11124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .set_fmt = mx3_camera_set_fmt, 11134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .try_fmt = mx3_camera_try_fmt, 11144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .get_formats = mx3_camera_get_formats, 11154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .init_videobuf = mx3_camera_init_videobuf, 11164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .reqbufs = mx3_camera_reqbufs, 11174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .poll = mx3_camera_poll, 11184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .querycap = mx3_camera_querycap, 11194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .set_bus_param = mx3_camera_set_bus_param, 11204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 11214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1122e36bc31f823d6089bedc935fea82b6d36793412aJean Delvarestatic int __devinit mx3_camera_probe(struct platform_device *pdev) 11234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 11244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam; 11254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct resource *res; 11264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski void __iomem *base; 11274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int err = 0; 11284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *soc_host; 11294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 11314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!res) { 11324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = -ENODEV; 11334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto egetres; 11344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam = vmalloc(sizeof(*mx3_cam)); 11374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam) { 11384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_err(&pdev->dev, "Could not allocate mx3 camera object\n"); 11394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = -ENOMEM; 11404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto ealloc; 11414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski memset(mx3_cam, 0, sizeof(*mx3_cam)); 11434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1144b71df97a3ffdb2bfc286c3fa0c2b1a0aa3a6bf88Guennadi Liakhovetski mx3_cam->clk = clk_get(&pdev->dev, NULL); 11454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (IS_ERR(mx3_cam->clk)) { 11464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = PTR_ERR(mx3_cam->clk); 11474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto eclkget; 11484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->pdata = pdev->dev.platform_data; 11514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->platform_flags = mx3_cam->pdata->flags; 11524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!(mx3_cam->platform_flags & (MX3_CAMERA_DATAWIDTH_4 | 11534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski MX3_CAMERA_DATAWIDTH_8 | MX3_CAMERA_DATAWIDTH_10 | 11544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski MX3_CAMERA_DATAWIDTH_15))) { 11554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Platform hasn't set available data widths. This is bad. 11564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Warn and use a default. */ 11574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_warn(&pdev->dev, "WARNING! Platform hasn't set available " 11584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski "data widths, using default 8 bit\n"); 11594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->platform_flags |= MX3_CAMERA_DATAWIDTH_8; 11604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->mclk = mx3_cam->pdata->mclk_10khz * 10000; 11634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam->mclk) { 11644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_warn(&pdev->dev, 11654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski "mclk_10khz == 0! Please, fix your platform data. " 11664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski "Using default 20MHz\n"); 11674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->mclk = 20000000; 11684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* list of video-buffers */ 11714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski INIT_LIST_HEAD(&mx3_cam->capture); 11724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_lock_init(&mx3_cam->lock); 11734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 117440e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski base = ioremap(res->start, resource_size(res)); 11754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!base) { 117640e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski pr_err("Couldn't map %x@%x\n", resource_size(res), res->start); 11774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = -ENOMEM; 11784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto eioremap; 11794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->base = base; 11824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host = &mx3_cam->soc_host; 11844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->drv_name = MX3_CAM_DRV_NAME; 11854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->ops = &mx3_soc_camera_host_ops; 11864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->priv = mx3_cam; 1187979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski soc_host->v4l2_dev.dev = &pdev->dev; 11884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->nr = pdev->id; 1189eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski 11904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = soc_camera_host_register(soc_host); 11914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (err) 11924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto ecamhostreg; 11934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* IDMAC interface */ 11954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dmaengine_get(); 11964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 11984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiecamhostreg: 12004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski iounmap(base); 12014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskieioremap: 12024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_put(mx3_cam->clk); 12034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskieclkget: 12044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vfree(mx3_cam); 12054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiealloc: 12064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiegetres: 12074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return err; 12084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 12094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int __devexit mx3_camera_remove(struct platform_device *pdev) 12114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1212eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); 1213eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = container_of(soc_host, 1214eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski struct mx3_camera_dev, soc_host); 12154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_put(mx3_cam->clk); 12174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1218eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski soc_camera_host_unregister(soc_host); 12194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski iounmap(mx3_cam->base); 12214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 12234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * The channel has either not been allocated, 12244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * or should have been released 12254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 12264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (WARN_ON(mx3_cam->idmac_channel[0])) 12274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dma_release_channel(&mx3_cam->idmac_channel[0]->dma_chan); 12284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vfree(mx3_cam); 12304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dmaengine_put(); 12324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_info(&pdev->dev, "i.MX3x Camera driver unloaded\n"); 12344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 12364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 12374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic struct platform_driver mx3_camera_driver = { 12394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .driver = { 12404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .name = MX3_CAM_DRV_NAME, 12414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski }, 12424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .probe = mx3_camera_probe, 1243e36bc31f823d6089bedc935fea82b6d36793412aJean Delvare .remove = __devexit_p(mx3_camera_remove), 12444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 12454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1247e36bc31f823d6089bedc935fea82b6d36793412aJean Delvarestatic int __init mx3_camera_init(void) 12484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 12494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return platform_driver_register(&mx3_camera_driver); 12504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 12514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void __exit mx3_camera_exit(void) 12534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 12544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski platform_driver_unregister(&mx3_camera_driver); 12554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 12564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskimodule_init(mx3_camera_init); 12584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskimodule_exit(mx3_camera_exit); 12594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi LiakhovetskiMODULE_DESCRIPTION("i.MX3x SoC Camera Host driver"); 12614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi LiakhovetskiMODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>"); 12624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi LiakhovetskiMODULE_LICENSE("GPL v2"); 126340e2e0927003424c25807b575dd40da2b8685857Guennadi LiakhovetskiMODULE_ALIAS("platform:" MX3_CAM_DRV_NAME); 1264