mx3_camera.c revision 57bee29d6e8cf721864fa47a18366bee5ff24f21
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> 26760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski#include <media/soc_mediabus.h> 274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <mach/ipu.h> 294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#include <mach/mx3_camera.h> 304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define MX3_CAM_DRV_NAME "mx3-camera" 324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* CMOS Sensor Interface Registers */ 344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_REG_START 0x60 354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF (0x60 - CSI_REG_START) 374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_FRM_SIZE (0x64 - CSI_REG_START) 384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_ACT_FRM_SIZE (0x68 - CSI_REG_START) 394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_OUT_FRM_CTRL (0x6C - CSI_REG_START) 404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_TST_CTRL (0x70 - CSI_REG_START) 414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_CCIR_CODE_1 (0x74 - CSI_REG_START) 424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_CCIR_CODE_2 (0x78 - CSI_REG_START) 434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_CCIR_CODE_3 (0x7C - CSI_REG_START) 444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_FLASH_STROBE_1 (0x80 - CSI_REG_START) 454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_FLASH_STROBE_2 (0x84 - CSI_REG_START) 464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_VSYNC_POL_SHIFT 0 484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_HSYNC_POL_SHIFT 1 494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_POL_SHIFT 2 504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_PIX_CLK_POL_SHIFT 3 514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_SENS_PRTCL_SHIFT 4 524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_SENS_CLKSRC_SHIFT 7 534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_SHIFT 8 544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_WIDTH_SHIFT 10 554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_EXT_VSYNC_SHIFT 15 564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DIVRATIO_SHIFT 16 574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_RGB_YUV444 (0UL << CSI_SENS_CONF_DATA_FMT_SHIFT) 594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_YUV422 (2UL << CSI_SENS_CONF_DATA_FMT_SHIFT) 604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define CSI_SENS_CONF_DATA_FMT_BAYER (3UL << CSI_SENS_CONF_DATA_FMT_SHIFT) 614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#define MAX_VIDEO_MEM 16 634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistruct mx3_camera_buffer { 654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* common v4l buffer stuff -- must be first */ 664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer vb; 67760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski enum v4l2_mbus_pixelcode code; 684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* One descriptot per scatterlist (per frame) */ 704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_async_tx_descriptor *txd; 714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* We have to "build" a scatterlist ourselves - one element per frame */ 734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct scatterlist sg; 744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/** 774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * struct mx3_camera_dev - i.MX3x camera (CSI) object 784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @dev: camera device, to which the coherent buffer is attached 794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @icd: currently attached camera sensor 804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @clk: pointer to clock 814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @base: remapped register base address 824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @pdata: platform data 834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @platform_flags: platform flags 844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @mclk: master clock frequency in Hz 854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @capture: list of capture videobuffers 864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @lock: protects video buffer lists 874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @active: active video buffer 884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @idmac_channel: array of pointers to IPU DMAC DMA channels 894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * @soc_host: embedded soc_host object 904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistruct mx3_camera_dev { 924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * i.MX3x is only supposed to handle one camera on its Camera Sensor 944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Interface. If anyone ever builds hardware to enable more than one 954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * camera _simultaneously_, they will have to modify this driver too 964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd; 984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct clk *clk; 994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski void __iomem *base; 1014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_pdata *pdata; 1034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long platform_flags; 1054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long mclk; 1064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct list_head capture; 1084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spinlock_t lock; /* Protects video buffer lists */ 1094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer *active; 1104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* IDMAC / dmaengine interface */ 1124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *idmac_channel[1]; /* We need one channel */ 1134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host soc_host; 1154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 1164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistruct dma_chan_request { 1184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam; 1194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski enum ipu_channel id; 1204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 1214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic u32 csi_reg_read(struct mx3_camera_dev *mx3, off_t reg) 1234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return __raw_readl(mx3->base + reg); 1254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void csi_reg_write(struct mx3_camera_dev *mx3, u32 value, off_t reg) 1284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski __raw_writel(value, mx3->base + reg); 1304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called from the IPU IDMAC ISR */ 1334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_cam_dma_done(void *arg) 1344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_tx_desc *desc = to_tx_desc(arg); 1364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_chan *chan = desc->txd.chan; 1374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichannel = to_idmac_chan(chan); 1384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ichannel->client; 1394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer *vb; 1404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_dbg(chan->device->dev, "callback cookie %d, active DMA 0x%08x\n", 1424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski desc->txd.cookie, mx3_cam->active ? sg_dma_address(&mx3_cam->active->sg) : 0); 1434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_lock(&mx3_cam->lock); 1454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->active) { 1464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb = &mx3_cam->active->vb; 1474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski list_del_init(&vb->queue); 1494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_DONE; 1504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski do_gettimeofday(&vb->ts); 1514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->field_count++; 1524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski wake_up(&vb->done); 1534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 1544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (list_empty(&mx3_cam->capture)) { 1564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = NULL; 1574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_unlock(&mx3_cam->lock); 1584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 1604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * stop capture - without further buffers IPU_CHA_BUF0_RDY will 1614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * not get updated 1624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 1634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return; 1644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 1654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = list_entry(mx3_cam->capture.next, 1674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer, vb.queue); 1684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active->vb.state = VIDEOBUF_ACTIVE; 1694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_unlock(&mx3_cam->lock); 1704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void free_buffer(struct videobuf_queue *vq, struct mx3_camera_buffer *buf) 1734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd = vq->priv_data; 1754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer *vb = &buf->vb; 1764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_async_tx_descriptor *txd = buf->txd; 1774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichan; 1784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski BUG_ON(in_interrupt()); 1804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1810166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__, 1824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb, vb->baddr, vb->bsize); 1834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 1854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * This waits until this buffer is out of danger, i.e., until it is no 1864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * longer in STATE_QUEUED or STATE_ACTIVE 1874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 1880e0809a58869e3e422985f868ad5e0da1fc0ba85Hans Verkuil videobuf_waiton(vq, vb, 0, 0); 1894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (txd) { 1904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ichan = to_idmac_chan(txd->chan); 1914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski async_tx_ack(txd); 1924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 1934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski videobuf_dma_contig_free(vq, vb); 1944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski buf->txd = NULL; 1954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_NEEDS_INIT; 1974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 1984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* 2004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Videobuf operations 2014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* 2044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Calculate the __buffer__ (not data) size and number of buffers. 2054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Called with .vb_lock held 2064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_videobuf_setup(struct videobuf_queue *vq, unsigned int *count, 2084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned int *size) 2094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 2104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd = vq->priv_data; 2114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 2124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 213760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, 214760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski icd->current_fmt->host_fmt); 215760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 216760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (bytes_per_line < 0) 217760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return bytes_per_line; 2184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam->idmac_channel[0]) 2204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 2214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 222760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski *size = bytes_per_line * icd->user_height; 2234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!*count) 2254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *count = 32; 2264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (*size * *count > MAX_VIDEO_MEM * 1024 * 1024) 2284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *count = MAX_VIDEO_MEM * 1024 * 1024 / *size; 2294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 2314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 2324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called with .vb_lock held */ 2344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_videobuf_prepare(struct videobuf_queue *vq, 2354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer *vb, enum v4l2_field field) 2364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 2374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd = vq->priv_data; 2384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 2394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 2404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer *buf = 2414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski container_of(vb, struct mx3_camera_buffer, vb); 242760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski size_t new_size; 2434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int ret; 244760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, 245760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski icd->current_fmt->host_fmt); 246760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 247760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (bytes_per_line < 0) 248760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return bytes_per_line; 249760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 250760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski new_size = bytes_per_line * icd->user_height; 2514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 2534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * I think, in buf_prepare you only have to protect global data, 2544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * the actual buffer is yours 2554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 257760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (buf->code != icd->current_fmt->code || 2586a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski vb->width != icd->user_width || 2596a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski vb->height != icd->user_height || 2604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->field != field) { 261760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski buf->code = icd->current_fmt->code; 2626a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski vb->width = icd->user_width; 2636a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski vb->height = icd->user_height; 2644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->field = field; 2654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (vb->state != VIDEOBUF_NEEDS_INIT) 2664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski free_buffer(vq, buf); 2674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 2684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (vb->baddr && vb->bsize < new_size) { 2704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* User provided buffer, but it is too small */ 2714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = -ENOMEM; 2724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto out; 2734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 2744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (vb->state == VIDEOBUF_NEEDS_INIT) { 2764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichan = mx3_cam->idmac_channel[0]; 2774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct scatterlist *sg = &buf->sg; 2784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 2804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * The total size of video-buffers that will be allocated / mapped. 2814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * *size that we calculated in videobuf_setup gets assigned to 2824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * vb->bsize, and now we use the same calculation to get vb->size. 2834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->size = new_size; 2854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* This actually (allocates and) maps buffers */ 2874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = videobuf_iolock(vq, vb, NULL); 2884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret) 2894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto fail; 2904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 2914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 2924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * We will have to configure the IDMAC channel. It has two slots 2934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * for DMA buffers, we shall enter the first two buffers there, 2944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * and then submit new buffers in DMA-ready interrupts 2954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 2964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sg_init_table(sg, 1); 2974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sg_dma_address(sg) = videobuf_to_dma_contig(vb); 2984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sg_dma_len(sg) = vb->size; 2994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski buf->txd = ichan->dma_chan.device->device_prep_slave_sg( 3014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski &ichan->dma_chan, sg, 1, DMA_FROM_DEVICE, 3024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski DMA_PREP_INTERRUPT); 3034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!buf->txd) { 3044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = -EIO; 3054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto fail; 3064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 3074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski buf->txd->callback_param = buf->txd; 3094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski buf->txd->callback = mx3_cam_dma_done; 3104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_PREPARED; 3124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 3134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 3154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskifail: 3174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski free_buffer(vq, buf); 3184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiout: 3194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 3204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 3214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic enum pixel_fmt fourcc_to_ipu_pix(__u32 fourcc) 3234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 3244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Add more formats as need arises and test possibilities appear... */ 3254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski switch (fourcc) { 3264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_RGB565: 3274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_RGB565; 3284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_RGB24: 3294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_RGB24; 3304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_RGB332: 3314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_RGB332; 3324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case V4L2_PIX_FMT_YUV422P: 3334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_YVU422P; 3344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 3354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return IPU_PIX_FMT_GENERIC; 3364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 3374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 3384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3392dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski/* 3402dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski * Called with .vb_lock mutex held and 3412dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski * under spinlock_irqsave(&mx3_cam->lock, ...) 3422dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski */ 3434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_videobuf_queue(struct videobuf_queue *vq, 3444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer *vb) 3454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 3464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd = vq->priv_data; 3474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 3484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 3494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer *buf = 3504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski container_of(vb, struct mx3_camera_buffer, vb); 3514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_async_tx_descriptor *txd = buf->txd; 3524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichan = to_idmac_chan(txd->chan); 3534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_video_param *video = &ichan->params.video; 3544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dma_cookie_t cookie; 355760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski u32 fourcc = icd->current_fmt->host_fmt->fourcc; 3562dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski 3572dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski BUG_ON(!irqs_disabled()); 3584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* This is the configuration of one sg-element */ 360760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski video->out_pixel_fmt = fourcc_to_ipu_pix(fourcc); 3616a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski video->out_width = icd->user_width; 3626a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski video->out_height = icd->user_height; 3636a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski video->out_stride = icd->user_width; 3644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#ifdef DEBUG 3664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* helps to see what DMA actually has written */ 3674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski memset((void *)vb->baddr, 0xaa, vb->bsize); 3684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski#endif 3694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski list_add_tail(&vb->queue, &mx3_cam->capture); 3714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam->active) { 3734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = buf; 3744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_ACTIVE; 3754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } else { 3764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_QUEUED; 3774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 3784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3792dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski spin_unlock_irq(&mx3_cam->lock); 3804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski cookie = txd->tx_submit(txd); 3820166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(icd->dev.parent, "Submitted cookie %d DMA 0x%08x\n", 3830166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski cookie, sg_dma_address(&buf->sg)); 3842dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski 3852dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski spin_lock_irq(&mx3_cam->lock); 3862dd54a54c19d0e5b50f4e1c591653772ead9d4a1Guennadi Liakhovetski 3874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (cookie >= 0) 3884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return; 3894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Submit error */ 3914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_PREPARED; 3924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski list_del_init(&vb->queue); 3944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->active == buf) 3964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = NULL; 3974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 3984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 3994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called with .vb_lock held */ 4004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_videobuf_release(struct videobuf_queue *vq, 4014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct videobuf_buffer *vb) 4024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 4034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd = vq->priv_data; 4044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 4054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 4064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_buffer *buf = 4074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski container_of(vb, struct mx3_camera_buffer, vb); 4084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long flags; 4094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4100166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(icd->dev.parent, 4110166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski "Release%s DMA 0x%08x (state %d), queue %sempty\n", 4124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active == buf ? " active" : "", sg_dma_address(&buf->sg), 4130166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski vb->state, list_empty(&vb->queue) ? "" : "not "); 4144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_lock_irqsave(&mx3_cam->lock, flags); 4154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) && 4164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski !list_empty(&vb->queue)) { 4174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vb->state = VIDEOBUF_ERROR; 4184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski list_del_init(&vb->queue); 4204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->active == buf) 4214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->active = NULL; 4224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 4234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_unlock_irqrestore(&mx3_cam->lock, flags); 4244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski free_buffer(vq, buf); 4254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 4264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic struct videobuf_queue_ops mx3_videobuf_ops = { 4284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .buf_setup = mx3_videobuf_setup, 4294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .buf_prepare = mx3_videobuf_prepare, 4304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .buf_queue = mx3_videobuf_queue, 4314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .buf_release = mx3_videobuf_release, 4324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 4334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_camera_init_videobuf(struct videobuf_queue *q, 4354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd) 4364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 4374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 4384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 4394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 440979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski videobuf_queue_dma_contig_init(q, &mx3_videobuf_ops, icd->dev.parent, 4414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski &mx3_cam->lock, 4424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski V4L2_BUF_TYPE_VIDEO_CAPTURE, 4434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski V4L2_FIELD_NONE, 4444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sizeof(struct mx3_camera_buffer), icd); 4454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 4464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* First part of ipu_csi_init_interface() */ 4484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_camera_activate(struct mx3_camera_dev *mx3_cam, 4494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_device *icd) 4504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 4514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski u32 conf; 4524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski long rate; 4534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Set default size: ipu_csi_set_window_size() */ 4554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, (640 - 1) | ((480 - 1) << 16), CSI_ACT_FRM_SIZE); 4564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* ...and position to 0:0: ipu_csi_set_window_pos() */ 4574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf = csi_reg_read(mx3_cam, CSI_OUT_FRM_CTRL) & 0xffff0000; 4584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, conf, CSI_OUT_FRM_CTRL); 4594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* We use only gated clock synchronisation mode so far */ 4614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf = 0 << CSI_SENS_CONF_SENS_PRTCL_SHIFT; 4624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Set generic data, platform-biggest bus-width */ 4644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= CSI_SENS_CONF_DATA_FMT_BAYER; 4654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) 4674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) 4694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 2 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) 4714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else/* if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4)*/ 4734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 4744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_CLK_SRC) 4764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_SENS_CLKSRC_SHIFT; 4774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_EXT_VSYNC) 4784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_EXT_VSYNC_SHIFT; 4794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DP) 4804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; 4814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_PCP) 4824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; 4834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_HSP) 4844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; 4854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_VSP) 4864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; 4874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* ipu_csi_init_interface() */ 4894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, conf, CSI_SENS_CONF); 4904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_enable(mx3_cam->clk); 4924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski rate = clk_round_rate(mx3_cam->clk, mx3_cam->mclk); 4930166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(icd->dev.parent, "Set SENS_CONF to %x, rate %ld\n", conf, rate); 4944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (rate) 4954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_set_rate(mx3_cam->clk, rate); 4964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 4974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 4984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called with .video_lock held */ 4994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_add_device(struct soc_camera_device *icd) 5004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 5014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 5024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 5034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 504979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski if (mx3_cam->icd) 505979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski return -EBUSY; 5064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_camera_activate(mx3_cam, icd); 5084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->icd = icd; 5104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5110166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_info(icd->dev.parent, "MX3 Camera driver attached to camera %d\n", 51240e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski icd->devnum); 51340e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski 51440e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski return 0; 5154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 5164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski/* Called with .video_lock held */ 5184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void mx3_camera_remove_device(struct soc_camera_device *icd) 5194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 5204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 5214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 5224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel **ichan = &mx3_cam->idmac_channel[0]; 5234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski BUG_ON(icd != mx3_cam->icd); 5254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (*ichan) { 5274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dma_release_channel(&(*ichan)->dma_chan); 5284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *ichan = NULL; 5294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 5304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_disable(mx3_cam->clk); 5324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->icd = NULL; 5344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5350166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_info(icd->dev.parent, "MX3 Camera driver detached from camera %d\n", 5364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski icd->devnum); 5374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 5384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic bool channel_change_requested(struct soc_camera_device *icd, 54009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct v4l2_rect *rect) 5414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 5424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 5434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 5444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct idmac_channel *ichan = mx3_cam->idmac_channel[0]; 5454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 54609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski /* Do buffers have to be re-allocated or channel re-configured? */ 547a0705b07f1816ae2b85388fcda71de69c221b4b8Guennadi Liakhovetski return ichan && rect->width * rect->height > 5486a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski icd->user_width * icd->user_height; 5494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 5504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int test_platform_param(struct mx3_camera_dev *mx3_cam, 5524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned char buswidth, unsigned long *flags) 5534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 5544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 5554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Platform specified synchronization and pixel clock polarities are 5564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * only a recommendation and are only used during probing. MX3x 5574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * camera interface only works in master mode, i.e., uses HSYNC and 5584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * VSYNC signals from the sensor 5594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 5604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski *flags = SOCAM_MASTER | 5614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_HSYNC_ACTIVE_HIGH | 5624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_HSYNC_ACTIVE_LOW | 5634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_VSYNC_ACTIVE_HIGH | 5644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_VSYNC_ACTIVE_LOW | 5654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_PCLK_SAMPLE_RISING | 5664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_PCLK_SAMPLE_FALLING | 5674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATA_ACTIVE_HIGH | 5684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATA_ACTIVE_LOW; 5694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 5705d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski /* 5715d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski * If requested data width is supported by the platform, use it or any 5725d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski * possible lower value - i.MX31 is smart enough to schift bits 5735d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski */ 574760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15) 575760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski *flags |= SOCAM_DATAWIDTH_15 | SOCAM_DATAWIDTH_10 | 576760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4; 577760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10) 578760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski *flags |= SOCAM_DATAWIDTH_10 | SOCAM_DATAWIDTH_8 | 579760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski SOCAM_DATAWIDTH_4; 580760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8) 581760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski *flags |= SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4; 582760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4) 583760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski *flags |= SOCAM_DATAWIDTH_4; 584760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 5854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski switch (buswidth) { 5864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 15: 587760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (!(*flags & SOCAM_DATAWIDTH_15)) 5884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 5894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 5904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 10: 591760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (!(*flags & SOCAM_DATAWIDTH_10)) 5924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 5934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 5944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 8: 595760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (!(*flags & SOCAM_DATAWIDTH_8)) 5964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 5974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 5984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 4: 599760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (!(*flags & SOCAM_DATAWIDTH_4)) 6004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 6014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 6024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 6036a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski dev_warn(mx3_cam->soc_host.v4l2_dev.dev, 6046a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski "Unsupported bus width %d\n", buswidth); 6054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 6064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 6074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 6094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_try_bus_param(struct soc_camera_device *icd, 6124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const unsigned int depth) 6134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 6144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 6154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 6164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long bus_flags, camera_flags; 6174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int ret = test_platform_param(mx3_cam, depth, &bus_flags); 6184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6196a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski dev_dbg(icd->dev.parent, "request bus width %d bit: %d\n", depth, ret); 6204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 6224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 6234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski camera_flags = icd->ops->query_bus_param(icd); 6254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = soc_camera_bus_param_compatible(camera_flags, bus_flags); 6274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 6280166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_warn(icd->dev.parent, 6290166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski "Flags incompatible: camera %lx, host %lx\n", 6304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski camera_flags, bus_flags); 6314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 6334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic bool chan_filter(struct dma_chan *chan, void *arg) 6364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 6374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct dma_chan_request *rq = arg; 6384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_pdata *pdata; 6394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!rq) 6414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return false; 6424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 643979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski pdata = rq->mx3_cam->soc_host.v4l2_dev.dev->platform_data; 6444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return rq->id == chan->chan_id && 6464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pdata->dma_dev == chan->device->dev; 6474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 649760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetskistatic const struct soc_mbus_pixelfmt mx3_camera_formats[] = { 6504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski { 651760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .fourcc = V4L2_PIX_FMT_SBGGR8, 652760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .name = "Bayer BGGR (sRGB) 8 bit", 653760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .bits_per_sample = 8, 654760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .packing = SOC_MBUS_PACKING_NONE, 655760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .order = SOC_MBUS_ORDER_LE, 6564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski }, { 657760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .fourcc = V4L2_PIX_FMT_GREY, 658760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .name = "Monochrome 8 bit", 659760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .bits_per_sample = 8, 660760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .packing = SOC_MBUS_PACKING_NONE, 661760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski .order = SOC_MBUS_ORDER_LE, 6624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski }, 6634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 6644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 665760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski/* This will be corrected as we get more formats */ 666760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetskistatic bool mx3_camera_packing_supported(const struct soc_mbus_pixelfmt *fmt) 6674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 668760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return fmt->packing == SOC_MBUS_PACKING_NONE || 669760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski (fmt->bits_per_sample == 8 && 670760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) || 671760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski (fmt->bits_per_sample > 8 && 672760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski fmt->packing == SOC_MBUS_PACKING_EXTEND16); 6734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 6744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 6753805f201934e5384f6e941222dc1968cb638a88cHans Verkuilstatic int mx3_camera_get_formats(struct soc_camera_device *icd, unsigned int idx, 6764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_format_xlate *xlate) 6774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 678760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 679760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski struct device *dev = icd->dev.parent; 680760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski int formats = 0, ret; 681760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski enum v4l2_mbus_pixelcode code; 682760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski const struct soc_mbus_pixelfmt *fmt; 6834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 684760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); 685760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (ret < 0) 686760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski /* No more formats */ 687760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return 0; 6884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 689760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski fmt = soc_mbus_get_fmtdesc(code); 690760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (!fmt) { 691760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski dev_err(icd->dev.parent, 6923805f201934e5384f6e941222dc1968cb638a88cHans Verkuil "Invalid format code #%u: %d\n", idx, code); 6934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 694760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski } 6954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 696760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski /* This also checks support for the requested bits-per-sample */ 697760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = mx3_camera_try_bus_param(icd, fmt->bits_per_sample); 6984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 6994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 7004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 701760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski switch (code) { 702760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski case V4L2_MBUS_FMT_SBGGR10_1X10: 7034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski formats++; 7044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (xlate) { 705760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->host_fmt = &mx3_camera_formats[0]; 706760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->code = code; 7074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate++; 708760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski dev_dbg(dev, "Providing format %s using code %d\n", 709760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mx3_camera_formats[0].name, code); 7104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 711760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski break; 712760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski case V4L2_MBUS_FMT_Y10_1X10: 7134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski formats++; 7144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (xlate) { 715760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->host_fmt = &mx3_camera_formats[1]; 716760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->code = code; 7174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate++; 718760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski dev_dbg(dev, "Providing format %s using code %d\n", 719760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mx3_camera_formats[1].name, code); 7204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 721760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski break; 7224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 723760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (!mx3_camera_packing_supported(fmt)) 724760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return 0; 725760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski } 726760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 727760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski /* Generic pass-through */ 728760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski formats++; 729760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (xlate) { 730760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->host_fmt = fmt; 731760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->code = code; 732760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate++; 733760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski dev_dbg(dev, "Providing format %x in pass-through mode\n", 734760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->host_fmt->fourcc); 7354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 7364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return formats; 7384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 7394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 74009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic void configure_geometry(struct mx3_camera_dev *mx3_cam, 7416a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski unsigned int width, unsigned int height) 7424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 7434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski u32 ctrl, width_field, height_field; 7444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Setup frame size - this cannot be changed on-the-fly... */ 7466a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski width_field = width - 1; 7476a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski height_field = height - 1; 7484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, width_field | (height_field << 16), CSI_SENS_FRM_SIZE); 7494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, width_field << 16, CSI_FLASH_STROBE_1); 7514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, (height_field << 16) | 0x22, CSI_FLASH_STROBE_2); 7524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, width_field | (height_field << 16), CSI_ACT_FRM_SIZE); 7544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 7554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* ...and position */ 7564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ctrl = csi_reg_read(mx3_cam, CSI_OUT_FRM_CTRL) & 0xffff0000; 7574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Sensor does the cropping */ 7584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, ctrl | 0 | (0 << 8), CSI_OUT_FRM_CTRL); 75909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski} 76009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 76109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic int acquire_dma_channel(struct mx3_camera_dev *mx3_cam) 76209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski{ 76309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_mask_t mask; 76409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct dma_chan *chan; 76509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct idmac_channel **ichan = &mx3_cam->idmac_channel[0]; 76609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski /* We have to use IDMAC_IC_7 for Bayer / generic data */ 76709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct dma_chan_request rq = {.mx3_cam = mx3_cam, 76809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski .id = IDMAC_IC_7}; 76909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 77009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (*ichan) { 77109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct videobuf_buffer *vb, *_vb; 77209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_release_channel(&(*ichan)->dma_chan); 77309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski *ichan = NULL; 77409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski mx3_cam->active = NULL; 77509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski list_for_each_entry_safe(vb, _vb, &mx3_cam->capture, queue) { 77609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski list_del_init(&vb->queue); 77709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski vb->state = VIDEOBUF_ERROR; 77809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski wake_up(&vb->done); 77909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski } 78009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski } 78109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 78209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_zero(mask); 78309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_set(DMA_SLAVE, mask); 78409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski dma_cap_set(DMA_PRIVATE, mask); 78509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski chan = dma_request_channel(mask, chan_filter, &rq); 78609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (!chan) 78709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return -EBUSY; 78809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 78909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski *ichan = to_idmac_chan(chan); 79009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski (*ichan)->client = mx3_cam; 79109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 79209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return 0; 79309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski} 79409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 7956a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski/* 7966a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * FIXME: learn to use stride != width, then we can keep stride properly aligned 7976a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * and support arbitrary (even) widths. 7986a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski */ 799e26b31449142a18512b57dbea515af234992ba7cMárton Némethstatic inline void stride_align(__u32 *width) 8006a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski{ 8016a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (((*width + 7) & ~7) < 4096) 8026a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski *width = (*width + 7) & ~7; 8036a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski else 8046a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski *width = *width & ~7; 8056a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski} 8066a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8076a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski/* 8086a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * As long as we don't implement host-side cropping and scaling, we can use 8096a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * default g_crop and cropcap from soc_camera.c 8106a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski */ 81109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic int mx3_camera_set_crop(struct soc_camera_device *icd, 81208590b9613f7f624fe3a052586eea2dbb3584b38Guennadi Liakhovetski struct v4l2_crop *a) 81309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski{ 81408590b9613f7f624fe3a052586eea2dbb3584b38Guennadi Liakhovetski struct v4l2_rect *rect = &a->c; 81509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 81609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 817c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 818760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski struct v4l2_mbus_framefmt mf; 8196a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski int ret; 82009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 8216a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096); 8226a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096); 8236a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8246a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, s_crop, a); 8256a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (ret < 0) 8266a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 8276a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8286a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski /* The capture device might have changed its output */ 829760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); 8306a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (ret < 0) 8316a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 8326a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 833760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (mf.width & 7) { 8346a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski /* Ouch! We can only handle 8-byte aligned width... */ 835760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski stride_align(&mf.width); 836760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); 83709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (ret < 0) 83809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return ret; 83909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski } 84009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 841760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (mf.width != icd->user_width || mf.height != icd->user_height) { 8426a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski /* 8436a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * We now know pixel formats and can decide upon DMA-channel(s) 8446a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski * So far only direct camera-to-memory is supported 8456a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski */ 8466a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (channel_change_requested(icd, rect)) { 847e26b31449142a18512b57dbea515af234992ba7cMárton Németh ret = acquire_dma_channel(mx3_cam); 8486a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski if (ret < 0) 8496a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 8506a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski } 85109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 852760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski configure_geometry(mx3_cam, mf.width, mf.height); 8536a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski } 8546a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8556a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski dev_dbg(icd->dev.parent, "Sensor cropped %dx%d\n", 856760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.width, mf.height); 8576a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 858760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski icd->user_width = mf.width; 859760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski icd->user_height = mf.height; 8606a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 8616a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski return ret; 86209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski} 86309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 86409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetskistatic int mx3_camera_set_fmt(struct soc_camera_device *icd, 86509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct v4l2_format *f) 86609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski{ 86709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 86809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 869c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 87009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski const struct soc_camera_format_xlate *xlate; 87109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski struct v4l2_pix_format *pix = &f->fmt.pix; 872760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski struct v4l2_mbus_framefmt mf; 87309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski int ret; 87409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 87509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); 87609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (!xlate) { 8770166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_warn(icd->dev.parent, "Format %x not found\n", 8780166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski pix->pixelformat); 87909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return -EINVAL; 88009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski } 88109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 8826a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski stride_align(&pix->width); 8836a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski dev_dbg(icd->dev.parent, "Set format %dx%d\n", pix->width, pix->height); 8846a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 88509e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski ret = acquire_dma_channel(mx3_cam); 88609e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski if (ret < 0) 88709e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski return ret; 88809e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 88909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski /* 89009e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski * Might have to perform a complete interface initialisation like in 89109e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski * ipu_csi_init_interface() in mxc_v4l2_s_param(). Also consider 89209e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski * mxc_v4l2_s_fmt() 89309e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski */ 89409e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski 8956a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski configure_geometry(mx3_cam, pix->width, pix->height); 8964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 897760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.width = pix->width; 898760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.height = pix->height; 899760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.field = pix->field; 900760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.colorspace = pix->colorspace; 901760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.code = xlate->code; 902760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 903760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); 904760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (ret < 0) 905760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return ret; 906760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 907760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (mf.code != xlate->code) 908760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return -EINVAL; 909760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 910760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->width = mf.width; 911760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->height = mf.height; 912760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->field = mf.field; 913760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->colorspace = mf.colorspace; 914760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski icd->current_fmt = xlate; 9154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9166a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski dev_dbg(icd->dev.parent, "Sensor set %dx%d\n", pix->width, pix->height); 9176a6c8786725c0b3d143674effa8b772f47b1c189Guennadi Liakhovetski 9184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 9194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_try_fmt(struct soc_camera_device *icd, 9224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_format *f) 9234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 924c9c1f1c0dbe90b82939917fdc3e4c9ccad42342dGuennadi Liakhovetski struct v4l2_subdev *sd = soc_camera_to_subdev(icd); 9254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const struct soc_camera_format_xlate *xlate; 9264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_pix_format *pix = &f->fmt.pix; 927760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski struct v4l2_mbus_framefmt mf; 9284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski __u32 pixfmt = pix->pixelformat; 9294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int ret; 9304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); 9324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (pixfmt && !xlate) { 933979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt); 9344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 9354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 9364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* limit to MX3 hardware capabilities */ 9384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (pix->height > 4096) 9394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->height = 4096; 9404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (pix->width > 4096) 9414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->width = 4096; 9424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 943760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->bytesperline = soc_mbus_bytes_per_line(pix->width, 944760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski xlate->host_fmt); 945760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (pix->bytesperline < 0) 946760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return pix->bytesperline; 9474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->sizeimage = pix->height * pix->bytesperline; 9484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* limit to sensor capabilities */ 950760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.width = pix->width; 951760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.height = pix->height; 952760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.field = pix->field; 953760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.colorspace = pix->colorspace; 954760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.code = xlate->code; 9554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 956760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); 957760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (ret < 0) 958760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return ret; 9594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 960760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->width = mf.width; 961760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->height = mf.height; 962760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski pix->colorspace = mf.colorspace; 963760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 964760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski switch (mf.field) { 965760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski case V4L2_FIELD_ANY: 9664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski pix->field = V4L2_FIELD_NONE; 967760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski break; 968760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski case V4L2_FIELD_NONE: 969760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski break; 970760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski default: 971760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski dev_err(icd->dev.parent, "Field type %d unsupported.\n", 972760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski mf.field); 973760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = -EINVAL; 9744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 9754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 9774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 97957bee29d6e8cf721864fa47a18366bee5ff24f21Guennadi Liakhovetskistatic int mx3_camera_reqbufs(struct soc_camera_device *icd, 9804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_requestbuffers *p) 9814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 9824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 9834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic unsigned int mx3_camera_poll(struct file *file, poll_table *pt) 9864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 98757bee29d6e8cf721864fa47a18366bee5ff24f21Guennadi Liakhovetski struct soc_camera_device *icd = file->private_data; 9884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 98957bee29d6e8cf721864fa47a18366bee5ff24f21Guennadi Liakhovetski return videobuf_poll_stream(file, &icd->vb_vidq, pt); 9904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 9914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 9924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_querycap(struct soc_camera_host *ici, 9934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct v4l2_capability *cap) 9944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 9954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* cap->name is set by the firendly caller:-> */ 9964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski strlcpy(cap->card, "i.MX3x Camera", sizeof(cap->card)); 9974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski cap->version = KERNEL_VERSION(0, 2, 2); 9984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; 9994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 10014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 10024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt) 10044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 10054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); 10064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = ici->priv; 10074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski unsigned long bus_flags, camera_flags, common_flags; 10084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski u32 dw, sens_conf; 1009760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski const struct soc_mbus_pixelfmt *fmt; 1010760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski int buswidth; 1011760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski int ret; 10124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski const struct soc_camera_format_xlate *xlate; 10130166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski struct device *dev = icd->dev.parent; 10144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1015760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski fmt = soc_mbus_get_fmtdesc(icd->current_fmt->code); 1016760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski if (!fmt) 1017760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski return -EINVAL; 1018760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 1019760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski buswidth = fmt->bits_per_sample; 1020760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski ret = test_platform_param(mx3_cam, buswidth, &bus_flags); 1021760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski 10224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); 10234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!xlate) { 10240166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_warn(dev, "Format %x not found\n", pixfmt); 10254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 10264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1028760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski dev_dbg(dev, "requested bus width %d bit: %d\n", buswidth, ret); 10294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (ret < 0) 10314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 10324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski camera_flags = icd->ops->query_bus_param(icd); 10344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags = soc_camera_bus_param_compatible(camera_flags, bus_flags); 10360166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(dev, "Flags cam: 0x%lx host: 0x%lx common: 0x%lx\n", 103740e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski camera_flags, bus_flags, common_flags); 10384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!common_flags) { 10390166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(dev, "no common flags"); 10404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return -EINVAL; 10414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Make choices, based on platform preferences */ 10444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && 10454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { 10464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_HSP) 10474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; 10484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 10494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; 10504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && 10534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { 10544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_VSP) 10554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; 10564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 10574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; 10584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if ((common_flags & SOCAM_DATA_ACTIVE_HIGH) && 10614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (common_flags & SOCAM_DATA_ACTIVE_LOW)) { 10624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_DP) 10634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_DATA_ACTIVE_HIGH; 10644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 10654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_DATA_ACTIVE_LOW; 10664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if ((common_flags & SOCAM_PCLK_SAMPLE_RISING) && 10694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (common_flags & SOCAM_PCLK_SAMPLE_FALLING)) { 10704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (mx3_cam->platform_flags & MX3_CAMERA_PCP) 10714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_PCLK_SAMPLE_RISING; 10724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 10734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags &= ~SOCAM_PCLK_SAMPLE_FALLING; 10744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 10754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10765d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski /* 10775d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski * Make the camera work in widest common mode, we'll take care of 10785d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski * the rest 10795d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski */ 10804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (common_flags & SOCAM_DATAWIDTH_15) 10814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | 10824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATAWIDTH_15; 10834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else if (common_flags & SOCAM_DATAWIDTH_10) 10844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | 10854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATAWIDTH_10; 10864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else if (common_flags & SOCAM_DATAWIDTH_8) 10874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | 10884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATAWIDTH_8; 10894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski else 10904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) | 10914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski SOCAM_DATAWIDTH_4; 10924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 10934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ret = icd->ops->set_bus_param(icd, common_flags); 109440e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski if (ret < 0) { 10950166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(dev, "camera set_bus_param(%lx) returned %d\n", 109640e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski common_flags, ret); 10974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return ret; 109840e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski } 10994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 11014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * So far only gated clock mode is supported. Add a line 11024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * (3 << CSI_SENS_CONF_SENS_PRTCL_SHIFT) | 11034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * below and select the required mode when supporting other 11044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * synchronisation protocols. 11054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 11064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf = csi_reg_read(mx3_cam, CSI_SENS_CONF) & 11074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski ~((1 << CSI_SENS_CONF_VSYNC_POL_SHIFT) | 11084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (1 << CSI_SENS_CONF_HSYNC_POL_SHIFT) | 11094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (1 << CSI_SENS_CONF_DATA_POL_SHIFT) | 11104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT) | 11114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (3 << CSI_SENS_CONF_DATA_FMT_SHIFT) | 11124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski (3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT)); 11134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* TODO: Support RGB and YUV formats */ 11154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* This has been set in mx3_camera_activate(), but we clear it above */ 11174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= CSI_SENS_CONF_DATA_FMT_BAYER; 11184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (common_flags & SOCAM_PCLK_SAMPLE_FALLING) 11204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT; 11214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (common_flags & SOCAM_HSYNC_ACTIVE_LOW) 11224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT; 11234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (common_flags & SOCAM_VSYNC_ACTIVE_LOW) 11244f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT; 11254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (common_flags & SOCAM_DATA_ACTIVE_LOW) 11264f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski sens_conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT; 11274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* Just do what we're asked to do */ 1129760697beca338599a65484389c7abbe54aedb664Guennadi Liakhovetski switch (xlate->host_fmt->bits_per_sample) { 11304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 4: 11314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 11324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 11334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 8: 11344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 1 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 11354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 11364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 10: 11374f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 2 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 11384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski break; 11394f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski default: 11404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 11414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * Actually it can only be 15 now, default is just to silence 11424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * compiler warnings 11434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 11444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski case 15: 11454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dw = 3 << CSI_SENS_CONF_DATA_WIDTH_SHIFT; 11464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski csi_reg_write(mx3_cam, sens_conf | dw, CSI_SENS_CONF); 11494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11500166b74374cae3fa8bff0caef726a3d960a9a50aGuennadi Liakhovetski dev_dbg(dev, "Set SENS_CONF to %x\n", sens_conf | dw); 11514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 11534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 11544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic struct soc_camera_host_ops mx3_soc_camera_host_ops = { 11564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .owner = THIS_MODULE, 11574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .add = mx3_camera_add_device, 11584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .remove = mx3_camera_remove_device, 115909e231b35173313cd92e27532e5028f2042dcee4Guennadi Liakhovetski .set_crop = mx3_camera_set_crop, 11604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .set_fmt = mx3_camera_set_fmt, 11614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .try_fmt = mx3_camera_try_fmt, 11624f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .get_formats = mx3_camera_get_formats, 11634f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .init_videobuf = mx3_camera_init_videobuf, 11644f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .reqbufs = mx3_camera_reqbufs, 11654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .poll = mx3_camera_poll, 11664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .querycap = mx3_camera_querycap, 11674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .set_bus_param = mx3_camera_set_bus_param, 11684f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 11694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1170e36bc31f823d6089bedc935fea82b6d36793412aJean Delvarestatic int __devinit mx3_camera_probe(struct platform_device *pdev) 11714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 11724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam; 11734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct resource *res; 11744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski void __iomem *base; 11754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski int err = 0; 11764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski struct soc_camera_host *soc_host; 11774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 11794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!res) { 11804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = -ENODEV; 11814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto egetres; 11824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam = vmalloc(sizeof(*mx3_cam)); 11854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam) { 11864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_err(&pdev->dev, "Could not allocate mx3 camera object\n"); 11874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = -ENOMEM; 11884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto ealloc; 11894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski memset(mx3_cam, 0, sizeof(*mx3_cam)); 11914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1192b71df97a3ffdb2bfc286c3fa0c2b1a0aa3a6bf88Guennadi Liakhovetski mx3_cam->clk = clk_get(&pdev->dev, NULL); 11934f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (IS_ERR(mx3_cam->clk)) { 11944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = PTR_ERR(mx3_cam->clk); 11954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto eclkget; 11964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 11974f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 11984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->pdata = pdev->dev.platform_data; 11994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->platform_flags = mx3_cam->pdata->flags; 12004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!(mx3_cam->platform_flags & (MX3_CAMERA_DATAWIDTH_4 | 12014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski MX3_CAMERA_DATAWIDTH_8 | MX3_CAMERA_DATAWIDTH_10 | 12024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski MX3_CAMERA_DATAWIDTH_15))) { 12035d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski /* 12045d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski * Platform hasn't set available data widths. This is bad. 12055d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski * Warn and use a default. 12065d28d525452f170e30bc038955439731462a5228Guennadi Liakhovetski */ 12074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_warn(&pdev->dev, "WARNING! Platform hasn't set available " 12084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski "data widths, using default 8 bit\n"); 12094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->platform_flags |= MX3_CAMERA_DATAWIDTH_8; 12104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 12114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->mclk = mx3_cam->pdata->mclk_10khz * 10000; 12134f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!mx3_cam->mclk) { 12144f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_warn(&pdev->dev, 12154f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski "mclk_10khz == 0! Please, fix your platform data. " 12164f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski "Using default 20MHz\n"); 12174f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->mclk = 20000000; 12184f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 12194f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12204f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* list of video-buffers */ 12214f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski INIT_LIST_HEAD(&mx3_cam->capture); 12224f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski spin_lock_init(&mx3_cam->lock); 12234f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 122440e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski base = ioremap(res->start, resource_size(res)); 12254f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (!base) { 122640e2e0927003424c25807b575dd40da2b8685857Guennadi Liakhovetski pr_err("Couldn't map %x@%x\n", resource_size(res), res->start); 12274f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = -ENOMEM; 12284f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto eioremap; 12294f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski } 12304f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12314f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski mx3_cam->base = base; 12324f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12334f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host = &mx3_cam->soc_host; 12344f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->drv_name = MX3_CAM_DRV_NAME; 12354f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->ops = &mx3_soc_camera_host_ops; 12364f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->priv = mx3_cam; 1237979ea1ddf80ac7383acdea03471355ca62702539Guennadi Liakhovetski soc_host->v4l2_dev.dev = &pdev->dev; 12384f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski soc_host->nr = pdev->id; 1239eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski 12404f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski err = soc_camera_host_register(soc_host); 12414f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (err) 12424f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski goto ecamhostreg; 12434f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12444f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* IDMAC interface */ 12454f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dmaengine_get(); 12464f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12474f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 12484f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12494f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiecamhostreg: 12504f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski iounmap(base); 12514f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskieioremap: 12524f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_put(mx3_cam->clk); 12534f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskieclkget: 12544f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vfree(mx3_cam); 12554f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiealloc: 12564f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskiegetres: 12574f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return err; 12584f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 12594f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12604f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic int __devexit mx3_camera_remove(struct platform_device *pdev) 12614f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 1262eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); 1263eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski struct mx3_camera_dev *mx3_cam = container_of(soc_host, 1264eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski struct mx3_camera_dev, soc_host); 12654f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12664f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski clk_put(mx3_cam->clk); 12674f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1268eff505fa1511b753b7cfb397a754b8ff4367cd55Guennadi Liakhovetski soc_camera_host_unregister(soc_host); 12694f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12704f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski iounmap(mx3_cam->base); 12714f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12724f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski /* 12734f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * The channel has either not been allocated, 12744f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski * or should have been released 12754f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski */ 12764f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski if (WARN_ON(mx3_cam->idmac_channel[0])) 12774f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dma_release_channel(&mx3_cam->idmac_channel[0]->dma_chan); 12784f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12794f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski vfree(mx3_cam); 12804f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12814f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dmaengine_put(); 12824f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12834f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski dev_info(&pdev->dev, "i.MX3x Camera driver unloaded\n"); 12844f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12854f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return 0; 12864f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 12874f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12884f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic struct platform_driver mx3_camera_driver = { 12894f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .driver = { 12904f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .name = MX3_CAM_DRV_NAME, 12914f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski }, 12924f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski .probe = mx3_camera_probe, 1293e36bc31f823d6089bedc935fea82b6d36793412aJean Delvare .remove = __devexit_p(mx3_camera_remove), 12944f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski}; 12954f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 12964f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 1297e36bc31f823d6089bedc935fea82b6d36793412aJean Delvarestatic int __init mx3_camera_init(void) 12984f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 12994f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski return platform_driver_register(&mx3_camera_driver); 13004f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 13014f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 13024f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskistatic void __exit mx3_camera_exit(void) 13034f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski{ 13044f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski platform_driver_unregister(&mx3_camera_driver); 13054f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski} 13064f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 13074f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskimodule_init(mx3_camera_init); 13084f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetskimodule_exit(mx3_camera_exit); 13094f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi Liakhovetski 13104f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi LiakhovetskiMODULE_DESCRIPTION("i.MX3x SoC Camera Host driver"); 13114f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi LiakhovetskiMODULE_AUTHOR("Guennadi Liakhovetski <lg@denx.de>"); 13124f67130ad35d6760c27984cf94b13a8cb85e4034Guennadi LiakhovetskiMODULE_LICENSE("GPL v2"); 131340e2e0927003424c25807b575dd40da2b8685857Guennadi LiakhovetskiMODULE_ALIAS("platform:" MX3_CAM_DRV_NAME); 1314