From: Hans Verkuil Date: Tue, 23 Feb 2016 16:38:43 +0000 (-0300) Subject: [media] soc_camera/mx2_camera.c: move to staging in preparation, for removal X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=679759c13d1164be6f5451138554c2fa4fcafb3e;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git [media] soc_camera/mx2_camera.c: move to staging in preparation, for removal This driver is deprecated: it should become a stand-alone driver instead of using the soc-camera framework. Unless someone is willing to take this on (unlikely with such ancient hardware) it is going to be removed from the kernel soon. Signed-off-by: Hans Verkuil Acked-by: Guennadi Liakhovetski Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/platform/soc_camera/Kconfig b/drivers/media/platform/soc_camera/Kconfig index 21136221b696..0a537aba35e2 100644 --- a/drivers/media/platform/soc_camera/Kconfig +++ b/drivers/media/platform/soc_camera/Kconfig @@ -61,15 +61,6 @@ config VIDEO_SH_MOBILE_CEU ---help--- This is a v4l2 driver for the SuperH Mobile CEU Interface -config VIDEO_MX2 - tristate "i.MX27 Camera Sensor Interface driver" - depends on VIDEO_DEV && SOC_CAMERA - depends on SOC_IMX27 || COMPILE_TEST - depends on HAS_DMA - select VIDEOBUF2_DMA_CONTIG - ---help--- - This is a v4l2 driver for the i.MX27 Camera Sensor Interface - config VIDEO_ATMEL_ISI tristate "ATMEL Image Sensor Interface (ISI) support" depends on VIDEO_DEV && SOC_CAMERA diff --git a/drivers/media/platform/soc_camera/Makefile b/drivers/media/platform/soc_camera/Makefile index bdd7fc9981f2..dad56b9fa01e 100644 --- a/drivers/media/platform/soc_camera/Makefile +++ b/drivers/media/platform/soc_camera/Makefile @@ -7,7 +7,6 @@ obj-$(CONFIG_SOC_CAMERA_PLATFORM) += soc_camera_platform.o # soc-camera host drivers have to be linked after camera drivers obj-$(CONFIG_VIDEO_ATMEL_ISI) += atmel-isi.o -obj-$(CONFIG_VIDEO_MX2) += mx2_camera.o obj-$(CONFIG_VIDEO_MX3) += mx3_camera.o obj-$(CONFIG_VIDEO_PXA27x) += pxa_camera.o obj-$(CONFIG_VIDEO_SH_MOBILE_CEU) += sh_mobile_ceu_camera.o diff --git a/drivers/media/platform/soc_camera/mx2_camera.c b/drivers/media/platform/soc_camera/mx2_camera.c deleted file mode 100644 index 48dd5b7851b5..000000000000 --- a/drivers/media/platform/soc_camera/mx2_camera.c +++ /dev/null @@ -1,1636 +0,0 @@ -/* - * V4L2 Driver for i.MX27 camera host - * - * Copyright (C) 2008, Sascha Hauer, Pengutronix - * Copyright (C) 2010, Baruch Siach, Orex Computed Radiography - * Copyright (C) 2012, Javier Martin, Vista Silicon S.L. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -#include - -#include - -#include - -#define MX2_CAM_DRV_NAME "mx2-camera" -#define MX2_CAM_VERSION "0.0.6" -#define MX2_CAM_DRIVER_DESCRIPTION "i.MX2x_Camera" - -/* reset values */ -#define CSICR1_RESET_VAL 0x40000800 -#define CSICR2_RESET_VAL 0x0 -#define CSICR3_RESET_VAL 0x0 - -/* csi control reg 1 */ -#define CSICR1_SWAP16_EN (1 << 31) -#define CSICR1_EXT_VSYNC (1 << 30) -#define CSICR1_EOF_INTEN (1 << 29) -#define CSICR1_PRP_IF_EN (1 << 28) -#define CSICR1_CCIR_MODE (1 << 27) -#define CSICR1_COF_INTEN (1 << 26) -#define CSICR1_SF_OR_INTEN (1 << 25) -#define CSICR1_RF_OR_INTEN (1 << 24) -#define CSICR1_STATFF_LEVEL (3 << 22) -#define CSICR1_STATFF_INTEN (1 << 21) -#define CSICR1_RXFF_LEVEL(l) (((l) & 3) << 19) -#define CSICR1_RXFF_INTEN (1 << 18) -#define CSICR1_SOF_POL (1 << 17) -#define CSICR1_SOF_INTEN (1 << 16) -#define CSICR1_MCLKDIV(d) (((d) & 0xF) << 12) -#define CSICR1_HSYNC_POL (1 << 11) -#define CSICR1_CCIR_EN (1 << 10) -#define CSICR1_MCLKEN (1 << 9) -#define CSICR1_FCC (1 << 8) -#define CSICR1_PACK_DIR (1 << 7) -#define CSICR1_CLR_STATFIFO (1 << 6) -#define CSICR1_CLR_RXFIFO (1 << 5) -#define CSICR1_GCLK_MODE (1 << 4) -#define CSICR1_INV_DATA (1 << 3) -#define CSICR1_INV_PCLK (1 << 2) -#define CSICR1_REDGE (1 << 1) -#define CSICR1_FMT_MASK (CSICR1_PACK_DIR | CSICR1_SWAP16_EN) - -#define SHIFT_STATFF_LEVEL 22 -#define SHIFT_RXFF_LEVEL 19 -#define SHIFT_MCLKDIV 12 - -#define SHIFT_FRMCNT 16 - -#define CSICR1 0x00 -#define CSICR2 0x04 -#define CSISR 0x08 -#define CSISTATFIFO 0x0c -#define CSIRFIFO 0x10 -#define CSIRXCNT 0x14 -#define CSICR3 0x1c -#define CSIDMASA_STATFIFO 0x20 -#define CSIDMATA_STATFIFO 0x24 -#define CSIDMASA_FB1 0x28 -#define CSIDMASA_FB2 0x2c -#define CSIFBUF_PARA 0x30 -#define CSIIMAG_PARA 0x34 - -/* EMMA PrP */ -#define PRP_CNTL 0x00 -#define PRP_INTR_CNTL 0x04 -#define PRP_INTRSTATUS 0x08 -#define PRP_SOURCE_Y_PTR 0x0c -#define PRP_SOURCE_CB_PTR 0x10 -#define PRP_SOURCE_CR_PTR 0x14 -#define PRP_DEST_RGB1_PTR 0x18 -#define PRP_DEST_RGB2_PTR 0x1c -#define PRP_DEST_Y_PTR 0x20 -#define PRP_DEST_CB_PTR 0x24 -#define PRP_DEST_CR_PTR 0x28 -#define PRP_SRC_FRAME_SIZE 0x2c -#define PRP_DEST_CH1_LINE_STRIDE 0x30 -#define PRP_SRC_PIXEL_FORMAT_CNTL 0x34 -#define PRP_CH1_PIXEL_FORMAT_CNTL 0x38 -#define PRP_CH1_OUT_IMAGE_SIZE 0x3c -#define PRP_CH2_OUT_IMAGE_SIZE 0x40 -#define PRP_SRC_LINE_STRIDE 0x44 -#define PRP_CSC_COEF_012 0x48 -#define PRP_CSC_COEF_345 0x4c -#define PRP_CSC_COEF_678 0x50 -#define PRP_CH1_RZ_HORI_COEF1 0x54 -#define PRP_CH1_RZ_HORI_COEF2 0x58 -#define PRP_CH1_RZ_HORI_VALID 0x5c -#define PRP_CH1_RZ_VERT_COEF1 0x60 -#define PRP_CH1_RZ_VERT_COEF2 0x64 -#define PRP_CH1_RZ_VERT_VALID 0x68 -#define PRP_CH2_RZ_HORI_COEF1 0x6c -#define PRP_CH2_RZ_HORI_COEF2 0x70 -#define PRP_CH2_RZ_HORI_VALID 0x74 -#define PRP_CH2_RZ_VERT_COEF1 0x78 -#define PRP_CH2_RZ_VERT_COEF2 0x7c -#define PRP_CH2_RZ_VERT_VALID 0x80 - -#define PRP_CNTL_CH1EN (1 << 0) -#define PRP_CNTL_CH2EN (1 << 1) -#define PRP_CNTL_CSIEN (1 << 2) -#define PRP_CNTL_DATA_IN_YUV420 (0 << 3) -#define PRP_CNTL_DATA_IN_YUV422 (1 << 3) -#define PRP_CNTL_DATA_IN_RGB16 (2 << 3) -#define PRP_CNTL_DATA_IN_RGB32 (3 << 3) -#define PRP_CNTL_CH1_OUT_RGB8 (0 << 5) -#define PRP_CNTL_CH1_OUT_RGB16 (1 << 5) -#define PRP_CNTL_CH1_OUT_RGB32 (2 << 5) -#define PRP_CNTL_CH1_OUT_YUV422 (3 << 5) -#define PRP_CNTL_CH2_OUT_YUV420 (0 << 7) -#define PRP_CNTL_CH2_OUT_YUV422 (1 << 7) -#define PRP_CNTL_CH2_OUT_YUV444 (2 << 7) -#define PRP_CNTL_CH1_LEN (1 << 9) -#define PRP_CNTL_CH2_LEN (1 << 10) -#define PRP_CNTL_SKIP_FRAME (1 << 11) -#define PRP_CNTL_SWRST (1 << 12) -#define PRP_CNTL_CLKEN (1 << 13) -#define PRP_CNTL_WEN (1 << 14) -#define PRP_CNTL_CH1BYP (1 << 15) -#define PRP_CNTL_IN_TSKIP(x) ((x) << 16) -#define PRP_CNTL_CH1_TSKIP(x) ((x) << 19) -#define PRP_CNTL_CH2_TSKIP(x) ((x) << 22) -#define PRP_CNTL_INPUT_FIFO_LEVEL(x) ((x) << 25) -#define PRP_CNTL_RZ_FIFO_LEVEL(x) ((x) << 27) -#define PRP_CNTL_CH2B1EN (1 << 29) -#define PRP_CNTL_CH2B2EN (1 << 30) -#define PRP_CNTL_CH2FEN (1 << 31) - -/* IRQ Enable and status register */ -#define PRP_INTR_RDERR (1 << 0) -#define PRP_INTR_CH1WERR (1 << 1) -#define PRP_INTR_CH2WERR (1 << 2) -#define PRP_INTR_CH1FC (1 << 3) -#define PRP_INTR_CH2FC (1 << 5) -#define PRP_INTR_LBOVF (1 << 7) -#define PRP_INTR_CH2OVF (1 << 8) - -/* Resizing registers */ -#define PRP_RZ_VALID_TBL_LEN(x) ((x) << 24) -#define PRP_RZ_VALID_BILINEAR (1 << 31) - -#define MAX_VIDEO_MEM 16 - -#define RESIZE_NUM_MIN 1 -#define RESIZE_NUM_MAX 20 -#define BC_COEF 3 -#define SZ_COEF (1 << BC_COEF) - -#define RESIZE_DIR_H 0 -#define RESIZE_DIR_V 1 - -#define RESIZE_ALGO_BILINEAR 0 -#define RESIZE_ALGO_AVERAGING 1 - -struct mx2_prp_cfg { - int channel; - u32 in_fmt; - u32 out_fmt; - u32 src_pixel; - u32 ch1_pixel; - u32 irq_flags; - u32 csicr1; -}; - -/* prp resizing parameters */ -struct emma_prp_resize { - int algo; /* type of algorithm used */ - int len; /* number of coefficients */ - unsigned char s[RESIZE_NUM_MAX]; /* table of coefficients */ -}; - -/* prp configuration for a client-host fmt pair */ -struct mx2_fmt_cfg { - u32 in_fmt; - u32 out_fmt; - struct mx2_prp_cfg cfg; -}; - -struct mx2_buf_internal { - struct list_head queue; - int bufnum; - bool discard; -}; - -/* buffer for one video frame */ -struct mx2_buffer { - /* common v4l buffer stuff -- must be first */ - struct vb2_v4l2_buffer vb; - struct mx2_buf_internal internal; -}; - -enum mx2_camera_type { - IMX27_CAMERA, -}; - -struct mx2_camera_dev { - struct device *dev; - struct soc_camera_host soc_host; - struct clk *clk_emma_ahb, *clk_emma_ipg; - struct clk *clk_csi_ahb, *clk_csi_per; - - void __iomem *base_csi, *base_emma; - - struct mx2_camera_platform_data *pdata; - unsigned long platform_flags; - - struct list_head capture; - struct list_head active_bufs; - struct list_head discard; - - spinlock_t lock; - - int dma; - struct mx2_buffer *active; - struct mx2_buffer *fb1_active; - struct mx2_buffer *fb2_active; - - u32 csicr1; - enum mx2_camera_type devtype; - - struct mx2_buf_internal buf_discard[2]; - void *discard_buffer; - dma_addr_t discard_buffer_dma; - size_t discard_size; - struct mx2_fmt_cfg *emma_prp; - struct emma_prp_resize resizing[2]; - unsigned int s_width, s_height; - u32 frame_count; - struct vb2_alloc_ctx *alloc_ctx; -}; - -static struct platform_device_id mx2_camera_devtype[] = { - { - .name = "imx27-camera", - .driver_data = IMX27_CAMERA, - }, { - /* sentinel */ - } -}; -MODULE_DEVICE_TABLE(platform, mx2_camera_devtype); - -static struct mx2_buffer *mx2_ibuf_to_buf(struct mx2_buf_internal *int_buf) -{ - return container_of(int_buf, struct mx2_buffer, internal); -} - -static struct mx2_fmt_cfg mx27_emma_prp_table[] = { - /* - * This is a generic configuration which is valid for most - * prp input-output format combinations. - * We set the incoming and outgoing pixelformat to a - * 16 Bit wide format and adjust the bytesperline - * accordingly. With this configuration the inputdata - * will not be changed by the emma and could be any type - * of 16 Bit Pixelformat. - */ - { - .in_fmt = 0, - .out_fmt = 0, - .cfg = { - .channel = 1, - .in_fmt = PRP_CNTL_DATA_IN_RGB16, - .out_fmt = PRP_CNTL_CH1_OUT_RGB16, - .src_pixel = 0x2ca00565, /* RGB565 */ - .ch1_pixel = 0x2ca00565, /* RGB565 */ - .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH1WERR | - PRP_INTR_CH1FC | PRP_INTR_LBOVF, - .csicr1 = 0, - } - }, - { - .in_fmt = MEDIA_BUS_FMT_UYVY8_2X8, - .out_fmt = V4L2_PIX_FMT_YUYV, - .cfg = { - .channel = 1, - .in_fmt = PRP_CNTL_DATA_IN_YUV422, - .out_fmt = PRP_CNTL_CH1_OUT_YUV422, - .src_pixel = 0x22000888, /* YUV422 (YUYV) */ - .ch1_pixel = 0x62000888, /* YUV422 (YUYV) */ - .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH1WERR | - PRP_INTR_CH1FC | PRP_INTR_LBOVF, - .csicr1 = CSICR1_SWAP16_EN, - } - }, - { - .in_fmt = MEDIA_BUS_FMT_YUYV8_2X8, - .out_fmt = V4L2_PIX_FMT_YUYV, - .cfg = { - .channel = 1, - .in_fmt = PRP_CNTL_DATA_IN_YUV422, - .out_fmt = PRP_CNTL_CH1_OUT_YUV422, - .src_pixel = 0x22000888, /* YUV422 (YUYV) */ - .ch1_pixel = 0x62000888, /* YUV422 (YUYV) */ - .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH1WERR | - PRP_INTR_CH1FC | PRP_INTR_LBOVF, - .csicr1 = CSICR1_PACK_DIR, - } - }, - { - .in_fmt = MEDIA_BUS_FMT_YUYV8_2X8, - .out_fmt = V4L2_PIX_FMT_YUV420, - .cfg = { - .channel = 2, - .in_fmt = PRP_CNTL_DATA_IN_YUV422, - .out_fmt = PRP_CNTL_CH2_OUT_YUV420, - .src_pixel = 0x22000888, /* YUV422 (YUYV) */ - .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH2WERR | - PRP_INTR_CH2FC | PRP_INTR_LBOVF | - PRP_INTR_CH2OVF, - .csicr1 = CSICR1_PACK_DIR, - } - }, - { - .in_fmt = MEDIA_BUS_FMT_UYVY8_2X8, - .out_fmt = V4L2_PIX_FMT_YUV420, - .cfg = { - .channel = 2, - .in_fmt = PRP_CNTL_DATA_IN_YUV422, - .out_fmt = PRP_CNTL_CH2_OUT_YUV420, - .src_pixel = 0x22000888, /* YUV422 (YUYV) */ - .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH2WERR | - PRP_INTR_CH2FC | PRP_INTR_LBOVF | - PRP_INTR_CH2OVF, - .csicr1 = CSICR1_SWAP16_EN, - } - }, -}; - -static struct mx2_fmt_cfg *mx27_emma_prp_get_format(u32 in_fmt, u32 out_fmt) -{ - int i; - - for (i = 1; i < ARRAY_SIZE(mx27_emma_prp_table); i++) - if ((mx27_emma_prp_table[i].in_fmt == in_fmt) && - (mx27_emma_prp_table[i].out_fmt == out_fmt)) { - return &mx27_emma_prp_table[i]; - } - /* If no match return the most generic configuration */ - return &mx27_emma_prp_table[0]; -}; - -static void mx27_update_emma_buf(struct mx2_camera_dev *pcdev, - unsigned long phys, int bufnum) -{ - struct mx2_fmt_cfg *prp = pcdev->emma_prp; - - if (prp->cfg.channel == 1) { - writel(phys, pcdev->base_emma + - PRP_DEST_RGB1_PTR + 4 * bufnum); - } else { - writel(phys, pcdev->base_emma + - PRP_DEST_Y_PTR - 0x14 * bufnum); - if (prp->out_fmt == V4L2_PIX_FMT_YUV420) { - u32 imgsize = pcdev->soc_host.icd->user_height * - pcdev->soc_host.icd->user_width; - - writel(phys + imgsize, pcdev->base_emma + - PRP_DEST_CB_PTR - 0x14 * bufnum); - writel(phys + ((5 * imgsize) / 4), pcdev->base_emma + - PRP_DEST_CR_PTR - 0x14 * bufnum); - } - } -} - -static void mx2_camera_deactivate(struct mx2_camera_dev *pcdev) -{ - clk_disable_unprepare(pcdev->clk_csi_ahb); - clk_disable_unprepare(pcdev->clk_csi_per); - writel(0, pcdev->base_csi + CSICR1); - writel(0, pcdev->base_emma + PRP_CNTL); -} - -static int mx2_camera_add_device(struct soc_camera_device *icd) -{ - dev_info(icd->parent, "Camera driver attached to camera %d\n", - icd->devnum); - - return 0; -} - -static void mx2_camera_remove_device(struct soc_camera_device *icd) -{ - dev_info(icd->parent, "Camera driver detached from camera %d\n", - icd->devnum); -} - -/* - * The following two functions absolutely depend on the fact, that - * there can be only one camera on mx2 camera sensor interface - */ -static int mx2_camera_clock_start(struct soc_camera_host *ici) -{ - struct mx2_camera_dev *pcdev = ici->priv; - int ret; - u32 csicr1; - - ret = clk_prepare_enable(pcdev->clk_csi_ahb); - if (ret < 0) - return ret; - - ret = clk_prepare_enable(pcdev->clk_csi_per); - if (ret < 0) - goto exit_csi_ahb; - - csicr1 = CSICR1_MCLKEN | CSICR1_PRP_IF_EN | CSICR1_FCC | - CSICR1_RXFF_LEVEL(0); - - pcdev->csicr1 = csicr1; - writel(pcdev->csicr1, pcdev->base_csi + CSICR1); - - pcdev->frame_count = 0; - - return 0; - -exit_csi_ahb: - clk_disable_unprepare(pcdev->clk_csi_ahb); - - return ret; -} - -static void mx2_camera_clock_stop(struct soc_camera_host *ici) -{ - struct mx2_camera_dev *pcdev = ici->priv; - - mx2_camera_deactivate(pcdev); -} - -/* - * Videobuf operations - */ -static int mx2_videobuf_setup(struct vb2_queue *vq, - unsigned int *count, unsigned int *num_planes, - unsigned int sizes[], void *alloc_ctxs[]) -{ - struct soc_camera_device *icd = soc_camera_from_vb2q(vq); - struct soc_camera_host *ici = to_soc_camera_host(icd->parent); - struct mx2_camera_dev *pcdev = ici->priv; - - dev_dbg(icd->parent, "count=%d, size=%d\n", *count, sizes[0]); - - alloc_ctxs[0] = pcdev->alloc_ctx; - - sizes[0] = icd->sizeimage; - - if (0 == *count) - *count = 32; - if (!*num_planes && - sizes[0] * *count > MAX_VIDEO_MEM * 1024 * 1024) - *count = (MAX_VIDEO_MEM * 1024 * 1024) / sizes[0]; - - *num_planes = 1; - - return 0; -} - -static int mx2_videobuf_prepare(struct vb2_buffer *vb) -{ - struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); - int ret = 0; - - dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, - vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); - -#ifdef DEBUG - /* - * This can be useful if you want to see if we actually fill - * the buffer with something - */ - memset((void *)vb2_plane_vaddr(vb, 0), - 0xaa, vb2_get_plane_payload(vb, 0)); -#endif - - vb2_set_plane_payload(vb, 0, icd->sizeimage); - if (vb2_plane_vaddr(vb, 0) && - vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) { - ret = -EINVAL; - goto out; - } - - return 0; - -out: - return ret; -} - -static void mx2_videobuf_queue(struct vb2_buffer *vb) -{ - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); - struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); - struct soc_camera_host *ici = - to_soc_camera_host(icd->parent); - struct mx2_camera_dev *pcdev = ici->priv; - struct mx2_buffer *buf = container_of(vbuf, struct mx2_buffer, vb); - unsigned long flags; - - dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, - vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); - - spin_lock_irqsave(&pcdev->lock, flags); - - list_add_tail(&buf->internal.queue, &pcdev->capture); - - spin_unlock_irqrestore(&pcdev->lock, flags); -} - -static void mx27_camera_emma_buf_init(struct soc_camera_device *icd, - int bytesperline) -{ - struct soc_camera_host *ici = - to_soc_camera_host(icd->parent); - struct mx2_camera_dev *pcdev = ici->priv; - struct mx2_fmt_cfg *prp = pcdev->emma_prp; - - writel((pcdev->s_width << 16) | pcdev->s_height, - pcdev->base_emma + PRP_SRC_FRAME_SIZE); - writel(prp->cfg.src_pixel, - pcdev->base_emma + PRP_SRC_PIXEL_FORMAT_CNTL); - if (prp->cfg.channel == 1) { - writel((icd->user_width << 16) | icd->user_height, - pcdev->base_emma + PRP_CH1_OUT_IMAGE_SIZE); - writel(bytesperline, - pcdev->base_emma + PRP_DEST_CH1_LINE_STRIDE); - writel(prp->cfg.ch1_pixel, - pcdev->base_emma + PRP_CH1_PIXEL_FORMAT_CNTL); - } else { /* channel 2 */ - writel((icd->user_width << 16) | icd->user_height, - pcdev->base_emma + PRP_CH2_OUT_IMAGE_SIZE); - } - - /* Enable interrupts */ - writel(prp->cfg.irq_flags, pcdev->base_emma + PRP_INTR_CNTL); -} - -static void mx2_prp_resize_commit(struct mx2_camera_dev *pcdev) -{ - int dir; - - for (dir = RESIZE_DIR_H; dir <= RESIZE_DIR_V; dir++) { - unsigned char *s = pcdev->resizing[dir].s; - int len = pcdev->resizing[dir].len; - unsigned int coeff[2] = {0, 0}; - unsigned int valid = 0; - int i; - - if (len == 0) - continue; - - for (i = RESIZE_NUM_MAX - 1; i >= 0; i--) { - int j; - - j = i > 9 ? 1 : 0; - coeff[j] = (coeff[j] << BC_COEF) | - (s[i] & (SZ_COEF - 1)); - - if (i == 5 || i == 15) - coeff[j] <<= 1; - - valid = (valid << 1) | (s[i] >> BC_COEF); - } - - valid |= PRP_RZ_VALID_TBL_LEN(len); - - if (pcdev->resizing[dir].algo == RESIZE_ALGO_BILINEAR) - valid |= PRP_RZ_VALID_BILINEAR; - - if (pcdev->emma_prp->cfg.channel == 1) { - if (dir == RESIZE_DIR_H) { - writel(coeff[0], pcdev->base_emma + - PRP_CH1_RZ_HORI_COEF1); - writel(coeff[1], pcdev->base_emma + - PRP_CH1_RZ_HORI_COEF2); - writel(valid, pcdev->base_emma + - PRP_CH1_RZ_HORI_VALID); - } else { - writel(coeff[0], pcdev->base_emma + - PRP_CH1_RZ_VERT_COEF1); - writel(coeff[1], pcdev->base_emma + - PRP_CH1_RZ_VERT_COEF2); - writel(valid, pcdev->base_emma + - PRP_CH1_RZ_VERT_VALID); - } - } else { - if (dir == RESIZE_DIR_H) { - writel(coeff[0], pcdev->base_emma + - PRP_CH2_RZ_HORI_COEF1); - writel(coeff[1], pcdev->base_emma + - PRP_CH2_RZ_HORI_COEF2); - writel(valid, pcdev->base_emma + - PRP_CH2_RZ_HORI_VALID); - } else { - writel(coeff[0], pcdev->base_emma + - PRP_CH2_RZ_VERT_COEF1); - writel(coeff[1], pcdev->base_emma + - PRP_CH2_RZ_VERT_COEF2); - writel(valid, pcdev->base_emma + - PRP_CH2_RZ_VERT_VALID); - } - } - } -} - -static int mx2_start_streaming(struct vb2_queue *q, unsigned int count) -{ - struct soc_camera_device *icd = soc_camera_from_vb2q(q); - struct soc_camera_host *ici = - to_soc_camera_host(icd->parent); - struct mx2_camera_dev *pcdev = ici->priv; - struct mx2_fmt_cfg *prp = pcdev->emma_prp; - struct vb2_buffer *vb; - struct mx2_buffer *buf; - unsigned long phys; - int bytesperline; - unsigned long flags; - - if (count < 2) - return -ENOBUFS; - - spin_lock_irqsave(&pcdev->lock, flags); - - buf = list_first_entry(&pcdev->capture, struct mx2_buffer, - internal.queue); - buf->internal.bufnum = 0; - vb = &buf->vb.vb2_buf; - - phys = vb2_dma_contig_plane_dma_addr(vb, 0); - mx27_update_emma_buf(pcdev, phys, buf->internal.bufnum); - list_move_tail(pcdev->capture.next, &pcdev->active_bufs); - - buf = list_first_entry(&pcdev->capture, struct mx2_buffer, - internal.queue); - buf->internal.bufnum = 1; - vb = &buf->vb.vb2_buf; - - phys = vb2_dma_contig_plane_dma_addr(vb, 0); - mx27_update_emma_buf(pcdev, phys, buf->internal.bufnum); - list_move_tail(pcdev->capture.next, &pcdev->active_bufs); - - bytesperline = soc_mbus_bytes_per_line(icd->user_width, - icd->current_fmt->host_fmt); - if (bytesperline < 0) { - spin_unlock_irqrestore(&pcdev->lock, flags); - return bytesperline; - } - - /* - * I didn't manage to properly enable/disable the prp - * on a per frame basis during running transfers, - * thus we allocate a buffer here and use it to - * discard frames when no buffer is available. - * Feel free to work on this ;) - */ - pcdev->discard_size = icd->user_height * bytesperline; - pcdev->discard_buffer = dma_alloc_coherent(ici->v4l2_dev.dev, - pcdev->discard_size, - &pcdev->discard_buffer_dma, GFP_ATOMIC); - if (!pcdev->discard_buffer) { - spin_unlock_irqrestore(&pcdev->lock, flags); - return -ENOMEM; - } - - pcdev->buf_discard[0].discard = true; - list_add_tail(&pcdev->buf_discard[0].queue, - &pcdev->discard); - - pcdev->buf_discard[1].discard = true; - list_add_tail(&pcdev->buf_discard[1].queue, - &pcdev->discard); - - mx2_prp_resize_commit(pcdev); - - mx27_camera_emma_buf_init(icd, bytesperline); - - if (prp->cfg.channel == 1) { - writel(PRP_CNTL_CH1EN | - PRP_CNTL_CSIEN | - prp->cfg.in_fmt | - prp->cfg.out_fmt | - PRP_CNTL_CH1_LEN | - PRP_CNTL_CH1BYP | - PRP_CNTL_CH1_TSKIP(0) | - PRP_CNTL_IN_TSKIP(0), - pcdev->base_emma + PRP_CNTL); - } else { - writel(PRP_CNTL_CH2EN | - PRP_CNTL_CSIEN | - prp->cfg.in_fmt | - prp->cfg.out_fmt | - PRP_CNTL_CH2_LEN | - PRP_CNTL_CH2_TSKIP(0) | - PRP_CNTL_IN_TSKIP(0), - pcdev->base_emma + PRP_CNTL); - } - spin_unlock_irqrestore(&pcdev->lock, flags); - - return 0; -} - -static void mx2_stop_streaming(struct vb2_queue *q) -{ - struct soc_camera_device *icd = soc_camera_from_vb2q(q); - struct soc_camera_host *ici = - to_soc_camera_host(icd->parent); - struct mx2_camera_dev *pcdev = ici->priv; - struct mx2_fmt_cfg *prp = pcdev->emma_prp; - unsigned long flags; - void *b; - u32 cntl; - - spin_lock_irqsave(&pcdev->lock, flags); - - cntl = readl(pcdev->base_emma + PRP_CNTL); - if (prp->cfg.channel == 1) { - writel(cntl & ~PRP_CNTL_CH1EN, - pcdev->base_emma + PRP_CNTL); - } else { - writel(cntl & ~PRP_CNTL_CH2EN, - pcdev->base_emma + PRP_CNTL); - } - INIT_LIST_HEAD(&pcdev->capture); - INIT_LIST_HEAD(&pcdev->active_bufs); - INIT_LIST_HEAD(&pcdev->discard); - - b = pcdev->discard_buffer; - pcdev->discard_buffer = NULL; - - spin_unlock_irqrestore(&pcdev->lock, flags); - - dma_free_coherent(ici->v4l2_dev.dev, - pcdev->discard_size, b, pcdev->discard_buffer_dma); -} - -static struct vb2_ops mx2_videobuf_ops = { - .queue_setup = mx2_videobuf_setup, - .buf_prepare = mx2_videobuf_prepare, - .buf_queue = mx2_videobuf_queue, - .start_streaming = mx2_start_streaming, - .stop_streaming = mx2_stop_streaming, -}; - -static int mx2_camera_init_videobuf(struct vb2_queue *q, - struct soc_camera_device *icd) -{ - q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - q->io_modes = VB2_MMAP | VB2_USERPTR; - q->drv_priv = icd; - q->ops = &mx2_videobuf_ops; - q->mem_ops = &vb2_dma_contig_memops; - q->buf_struct_size = sizeof(struct mx2_buffer); - q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - - return vb2_queue_init(q); -} - -#define MX2_BUS_FLAGS (V4L2_MBUS_MASTER | \ - V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ - V4L2_MBUS_VSYNC_ACTIVE_LOW | \ - V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ - V4L2_MBUS_HSYNC_ACTIVE_LOW | \ - V4L2_MBUS_PCLK_SAMPLE_RISING | \ - V4L2_MBUS_PCLK_SAMPLE_FALLING | \ - V4L2_MBUS_DATA_ACTIVE_HIGH | \ - V4L2_MBUS_DATA_ACTIVE_LOW) - -static int mx27_camera_emma_prp_reset(struct mx2_camera_dev *pcdev) -{ - int count = 0; - - readl(pcdev->base_emma + PRP_CNTL); - writel(PRP_CNTL_SWRST, pcdev->base_emma + PRP_CNTL); - while (count++ < 100) { - if (!(readl(pcdev->base_emma + PRP_CNTL) & PRP_CNTL_SWRST)) - return 0; - barrier(); - udelay(1); - } - - return -ETIMEDOUT; -} - -static int mx2_camera_set_bus_param(struct soc_camera_device *icd) -{ - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); - struct soc_camera_host *ici = to_soc_camera_host(icd->parent); - struct mx2_camera_dev *pcdev = ici->priv; - struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; - unsigned long common_flags; - int ret; - int bytesperline; - u32 csicr1 = pcdev->csicr1; - - ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); - if (!ret) { - common_flags = soc_mbus_config_compatible(&cfg, MX2_BUS_FLAGS); - if (!common_flags) { - dev_warn(icd->parent, - "Flags incompatible: camera 0x%x, host 0x%x\n", - cfg.flags, MX2_BUS_FLAGS); - return -EINVAL; - } - } else if (ret != -ENOIOCTLCMD) { - return ret; - } else { - common_flags = MX2_BUS_FLAGS; - } - - if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && - (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { - if (pcdev->platform_flags & MX2_CAMERA_HSYNC_HIGH) - common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; - else - common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; - } - - if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) && - (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) { - if (pcdev->platform_flags & MX2_CAMERA_PCLK_SAMPLE_RISING) - common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING; - else - common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING; - } - - cfg.flags = common_flags; - ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); - if (ret < 0 && ret != -ENOIOCTLCMD) { - dev_dbg(icd->parent, "camera s_mbus_config(0x%lx) returned %d\n", - common_flags, ret); - return ret; - } - - csicr1 = (csicr1 & ~CSICR1_FMT_MASK) | pcdev->emma_prp->cfg.csicr1; - - if (common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) - csicr1 |= CSICR1_REDGE; - if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) - csicr1 |= CSICR1_SOF_POL; - if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) - csicr1 |= CSICR1_HSYNC_POL; - if (pcdev->platform_flags & MX2_CAMERA_EXT_VSYNC) - csicr1 |= CSICR1_EXT_VSYNC; - if (pcdev->platform_flags & MX2_CAMERA_CCIR) - csicr1 |= CSICR1_CCIR_EN; - if (pcdev->platform_flags & MX2_CAMERA_CCIR_INTERLACE) - csicr1 |= CSICR1_CCIR_MODE; - if (pcdev->platform_flags & MX2_CAMERA_GATED_CLOCK) - csicr1 |= CSICR1_GCLK_MODE; - if (pcdev->platform_flags & MX2_CAMERA_INV_DATA) - csicr1 |= CSICR1_INV_DATA; - - pcdev->csicr1 = csicr1; - - bytesperline = soc_mbus_bytes_per_line(icd->user_width, - icd->current_fmt->host_fmt); - if (bytesperline < 0) - return bytesperline; - - ret = mx27_camera_emma_prp_reset(pcdev); - if (ret) - return ret; - - writel(pcdev->csicr1, pcdev->base_csi + CSICR1); - - return 0; -} - -static int mx2_camera_set_crop(struct soc_camera_device *icd, - const struct v4l2_crop *a) -{ - struct v4l2_crop a_writable = *a; - struct v4l2_rect *rect = &a_writable.c; - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); - struct v4l2_subdev_format fmt = { - .which = V4L2_SUBDEV_FORMAT_ACTIVE, - }; - struct v4l2_mbus_framefmt *mf = &fmt.format; - int ret; - - soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096); - soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096); - - ret = v4l2_subdev_call(sd, video, s_crop, a); - if (ret < 0) - return ret; - - /* The capture device might have changed its output */ - ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt); - if (ret < 0) - return ret; - - dev_dbg(icd->parent, "Sensor cropped %dx%d\n", - mf->width, mf->height); - - icd->user_width = mf->width; - icd->user_height = mf->height; - - return ret; -} - -static int mx2_camera_get_formats(struct soc_camera_device *icd, - unsigned int idx, - struct soc_camera_format_xlate *xlate) -{ - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); - const struct soc_mbus_pixelfmt *fmt; - struct device *dev = icd->parent; - struct v4l2_subdev_mbus_code_enum code = { - .which = V4L2_SUBDEV_FORMAT_ACTIVE, - .index = idx, - }; - int ret, formats = 0; - - ret = v4l2_subdev_call(sd, pad, enum_mbus_code, NULL, &code); - if (ret < 0) - /* no more formats */ - return 0; - - fmt = soc_mbus_get_fmtdesc(code.code); - if (!fmt) { - dev_err(dev, "Invalid format code #%u: %d\n", idx, code.code); - return 0; - } - - if (code.code == MEDIA_BUS_FMT_YUYV8_2X8 || - code.code == MEDIA_BUS_FMT_UYVY8_2X8) { - formats++; - if (xlate) { - /* - * CH2 can output YUV420 which is a standard format in - * soc_mediabus.c - */ - xlate->host_fmt = - soc_mbus_get_fmtdesc(MEDIA_BUS_FMT_YUYV8_1_5X8); - xlate->code = code.code; - dev_dbg(dev, "Providing host format %s for sensor code %d\n", - xlate->host_fmt->name, code.code); - xlate++; - } - } - - if (code.code == MEDIA_BUS_FMT_UYVY8_2X8) { - formats++; - if (xlate) { - xlate->host_fmt = - soc_mbus_get_fmtdesc(MEDIA_BUS_FMT_YUYV8_2X8); - xlate->code = code.code; - dev_dbg(dev, "Providing host format %s for sensor code %d\n", - xlate->host_fmt->name, code.code); - xlate++; - } - } - - /* Generic pass-trough */ - formats++; - if (xlate) { - xlate->host_fmt = fmt; - xlate->code = code.code; - xlate++; - } - return formats; -} - -static int mx2_emmaprp_resize(struct mx2_camera_dev *pcdev, - struct v4l2_mbus_framefmt *mf_in, - struct v4l2_pix_format *pix_out, bool apply) -{ - unsigned int num, den; - unsigned long m; - int i, dir; - - for (dir = RESIZE_DIR_H; dir <= RESIZE_DIR_V; dir++) { - struct emma_prp_resize tmprsz; - unsigned char *s = tmprsz.s; - int len = 0; - int in, out; - - if (dir == RESIZE_DIR_H) { - in = mf_in->width; - out = pix_out->width; - } else { - in = mf_in->height; - out = pix_out->height; - } - - if (in < out) - return -EINVAL; - else if (in == out) - continue; - - /* Calculate ratio */ - m = gcd(in, out); - num = in / m; - den = out / m; - if (num > RESIZE_NUM_MAX) - return -EINVAL; - - if ((num >= 2 * den) && (den == 1) && - (num < 9) && (!(num & 0x01))) { - int sum = 0; - int j; - - /* Average scaling for >= 2:1 ratios */ - /* Support can be added for num >=9 and odd values */ - - tmprsz.algo = RESIZE_ALGO_AVERAGING; - len = num; - - for (i = 0; i < (len / 2); i++) - s[i] = 8; - - do { - for (i = 0; i < (len / 2); i++) { - s[i] = s[i] >> 1; - sum = 0; - for (j = 0; j < (len / 2); j++) - sum += s[j]; - if (sum == 4) - break; - } - } while (sum != 4); - - for (i = (len / 2); i < len; i++) - s[i] = s[len - i - 1]; - - s[len - 1] |= SZ_COEF; - } else { - /* bilinear scaling for < 2:1 ratios */ - int v; /* overflow counter */ - int coeff, nxt; /* table output */ - int in_pos_inc = 2 * den; - int out_pos = num; - int out_pos_inc = 2 * num; - int init_carry = num - den; - int carry = init_carry; - - tmprsz.algo = RESIZE_ALGO_BILINEAR; - v = den + in_pos_inc; - do { - coeff = v - out_pos; - out_pos += out_pos_inc; - carry += out_pos_inc; - for (nxt = 0; v < out_pos; nxt++) { - v += in_pos_inc; - carry -= in_pos_inc; - } - - if (len > RESIZE_NUM_MAX) - return -EINVAL; - - coeff = ((coeff << BC_COEF) + - (in_pos_inc >> 1)) / in_pos_inc; - - if (coeff >= (SZ_COEF - 1)) - coeff--; - - coeff |= SZ_COEF; - s[len] = (unsigned char)coeff; - len++; - - for (i = 1; i < nxt; i++) { - if (len >= RESIZE_NUM_MAX) - return -EINVAL; - s[len] = 0; - len++; - } - } while (carry != init_carry); - } - tmprsz.len = len; - if (dir == RESIZE_DIR_H) - mf_in->width = pix_out->width; - else - mf_in->height = pix_out->height; - - if (apply) - memcpy(&pcdev->resizing[dir], &tmprsz, sizeof(tmprsz)); - } - return 0; -} - -static int mx2_camera_set_fmt(struct soc_camera_device *icd, - struct v4l2_format *f) -{ - struct soc_camera_host *ici = to_soc_camera_host(icd->parent); - struct mx2_camera_dev *pcdev = ici->priv; - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); - const struct soc_camera_format_xlate *xlate; - struct v4l2_pix_format *pix = &f->fmt.pix; - struct v4l2_subdev_format format = { - .which = V4L2_SUBDEV_FORMAT_ACTIVE, - }; - struct v4l2_mbus_framefmt *mf = &format.format; - int ret; - - dev_dbg(icd->parent, "%s: requested params: width = %d, height = %d\n", - __func__, pix->width, pix->height); - - xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); - if (!xlate) { - dev_warn(icd->parent, "Format %x not found\n", - pix->pixelformat); - return -EINVAL; - } - - mf->width = pix->width; - mf->height = pix->height; - mf->field = pix->field; - mf->colorspace = pix->colorspace; - mf->code = xlate->code; - - ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &format); - if (ret < 0 && ret != -ENOIOCTLCMD) - return ret; - - /* Store width and height returned by the sensor for resizing */ - pcdev->s_width = mf->width; - pcdev->s_height = mf->height; - dev_dbg(icd->parent, "%s: sensor params: width = %d, height = %d\n", - __func__, pcdev->s_width, pcdev->s_height); - - pcdev->emma_prp = mx27_emma_prp_get_format(xlate->code, - xlate->host_fmt->fourcc); - - memset(pcdev->resizing, 0, sizeof(pcdev->resizing)); - if ((mf->width != pix->width || mf->height != pix->height) && - pcdev->emma_prp->cfg.in_fmt == PRP_CNTL_DATA_IN_YUV422) { - if (mx2_emmaprp_resize(pcdev, mf, pix, true) < 0) - dev_dbg(icd->parent, "%s: can't resize\n", __func__); - } - - if (mf->code != xlate->code) - return -EINVAL; - - pix->width = mf->width; - pix->height = mf->height; - pix->field = mf->field; - pix->colorspace = mf->colorspace; - icd->current_fmt = xlate; - - dev_dbg(icd->parent, "%s: returned params: width = %d, height = %d\n", - __func__, pix->width, pix->height); - - return 0; -} - -static int mx2_camera_try_fmt(struct soc_camera_device *icd, - struct v4l2_format *f) -{ - struct v4l2_subdev *sd = soc_camera_to_subdev(icd); - const struct soc_camera_format_xlate *xlate; - struct v4l2_pix_format *pix = &f->fmt.pix; - struct v4l2_subdev_pad_config pad_cfg; - struct v4l2_subdev_format format = { - .which = V4L2_SUBDEV_FORMAT_TRY, - }; - struct v4l2_mbus_framefmt *mf = &format.format; - __u32 pixfmt = pix->pixelformat; - struct soc_camera_host *ici = to_soc_camera_host(icd->parent); - struct mx2_camera_dev *pcdev = ici->priv; - struct mx2_fmt_cfg *emma_prp; - int ret; - - dev_dbg(icd->parent, "%s: requested params: width = %d, height = %d\n", - __func__, pix->width, pix->height); - - xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); - if (pixfmt && !xlate) { - dev_warn(icd->parent, "Format %x not found\n", pixfmt); - return -EINVAL; - } - - /* - * limit to MX27 hardware capabilities: width must be a multiple of 8 as - * requested by the CSI. (Table 39-2 in the i.MX27 Reference Manual). - */ - pix->width &= ~0x7; - - /* limit to sensor capabilities */ - mf->width = pix->width; - mf->height = pix->height; - mf->field = pix->field; - mf->colorspace = pix->colorspace; - mf->code = xlate->code; - - ret = v4l2_subdev_call(sd, pad, set_fmt, &pad_cfg, &format); - if (ret < 0) - return ret; - - dev_dbg(icd->parent, "%s: sensor params: width = %d, height = %d\n", - __func__, pcdev->s_width, pcdev->s_height); - - /* If the sensor does not support image size try PrP resizing */ - emma_prp = mx27_emma_prp_get_format(xlate->code, - xlate->host_fmt->fourcc); - - if ((mf->width != pix->width || mf->height != pix->height) && - emma_prp->cfg.in_fmt == PRP_CNTL_DATA_IN_YUV422) { - if (mx2_emmaprp_resize(pcdev, mf, pix, false) < 0) - dev_dbg(icd->parent, "%s: can't resize\n", __func__); - } - - if (mf->field == V4L2_FIELD_ANY) - mf->field = V4L2_FIELD_NONE; - /* - * Driver supports interlaced images provided they have - * both fields so that they can be processed as if they - * were progressive. - */ - if (mf->field != V4L2_FIELD_NONE && !V4L2_FIELD_HAS_BOTH(mf->field)) { - dev_err(icd->parent, "Field type %d unsupported.\n", - mf->field); - return -EINVAL; - } - - pix->width = mf->width; - pix->height = mf->height; - pix->field = mf->field; - pix->colorspace = mf->colorspace; - - dev_dbg(icd->parent, "%s: returned params: width = %d, height = %d\n", - __func__, pix->width, pix->height); - - return 0; -} - -static int mx2_camera_querycap(struct soc_camera_host *ici, - struct v4l2_capability *cap) -{ - /* cap->name is set by the friendly caller:-> */ - strlcpy(cap->card, MX2_CAM_DRIVER_DESCRIPTION, sizeof(cap->card)); - cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; - cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; - - return 0; -} - -static unsigned int mx2_camera_poll(struct file *file, poll_table *pt) -{ - struct soc_camera_device *icd = file->private_data; - - return vb2_poll(&icd->vb2_vidq, file, pt); -} - -static struct soc_camera_host_ops mx2_soc_camera_host_ops = { - .owner = THIS_MODULE, - .add = mx2_camera_add_device, - .remove = mx2_camera_remove_device, - .clock_start = mx2_camera_clock_start, - .clock_stop = mx2_camera_clock_stop, - .set_fmt = mx2_camera_set_fmt, - .set_crop = mx2_camera_set_crop, - .get_formats = mx2_camera_get_formats, - .try_fmt = mx2_camera_try_fmt, - .init_videobuf2 = mx2_camera_init_videobuf, - .poll = mx2_camera_poll, - .querycap = mx2_camera_querycap, - .set_bus_param = mx2_camera_set_bus_param, -}; - -static void mx27_camera_frame_done_emma(struct mx2_camera_dev *pcdev, - int bufnum, bool err) -{ -#ifdef DEBUG - struct mx2_fmt_cfg *prp = pcdev->emma_prp; -#endif - struct mx2_buf_internal *ibuf; - struct mx2_buffer *buf; - struct vb2_buffer *vb; - struct vb2_v4l2_buffer *vbuf; - unsigned long phys; - - ibuf = list_first_entry(&pcdev->active_bufs, struct mx2_buf_internal, - queue); - - BUG_ON(ibuf->bufnum != bufnum); - - if (ibuf->discard) { - /* - * Discard buffer must not be returned to user space. - * Just return it to the discard queue. - */ - list_move_tail(pcdev->active_bufs.next, &pcdev->discard); - } else { - buf = mx2_ibuf_to_buf(ibuf); - - vb = &buf->vb.vb2_buf; - vbuf = to_vb2_v4l2_buffer(vb); -#ifdef DEBUG - phys = vb2_dma_contig_plane_dma_addr(vb, 0); - if (prp->cfg.channel == 1) { - if (readl(pcdev->base_emma + PRP_DEST_RGB1_PTR + - 4 * bufnum) != phys) { - dev_err(pcdev->dev, "%lx != %x\n", phys, - readl(pcdev->base_emma + - PRP_DEST_RGB1_PTR + 4 * bufnum)); - } - } else { - if (readl(pcdev->base_emma + PRP_DEST_Y_PTR - - 0x14 * bufnum) != phys) { - dev_err(pcdev->dev, "%lx != %x\n", phys, - readl(pcdev->base_emma + - PRP_DEST_Y_PTR - 0x14 * bufnum)); - } - } -#endif - dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%p %lu\n", __func__, vb, - vb2_plane_vaddr(vb, 0), - vb2_get_plane_payload(vb, 0)); - - list_del_init(&buf->internal.queue); - vb->timestamp = ktime_get_ns(); - vbuf->sequence = pcdev->frame_count; - if (err) - vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); - else - vb2_buffer_done(vb, VB2_BUF_STATE_DONE); - } - - pcdev->frame_count++; - - if (list_empty(&pcdev->capture)) { - if (list_empty(&pcdev->discard)) { - dev_warn(pcdev->dev, "%s: trying to access empty discard list\n", - __func__); - return; - } - - ibuf = list_first_entry(&pcdev->discard, - struct mx2_buf_internal, queue); - ibuf->bufnum = bufnum; - - list_move_tail(pcdev->discard.next, &pcdev->active_bufs); - mx27_update_emma_buf(pcdev, pcdev->discard_buffer_dma, bufnum); - return; - } - - buf = list_first_entry(&pcdev->capture, struct mx2_buffer, - internal.queue); - - buf->internal.bufnum = bufnum; - - list_move_tail(pcdev->capture.next, &pcdev->active_bufs); - - vb = &buf->vb.vb2_buf; - - phys = vb2_dma_contig_plane_dma_addr(vb, 0); - mx27_update_emma_buf(pcdev, phys, bufnum); -} - -static irqreturn_t mx27_camera_emma_irq(int irq_emma, void *data) -{ - struct mx2_camera_dev *pcdev = data; - unsigned int status = readl(pcdev->base_emma + PRP_INTRSTATUS); - struct mx2_buf_internal *ibuf; - - spin_lock(&pcdev->lock); - - if (list_empty(&pcdev->active_bufs)) { - dev_warn(pcdev->dev, "%s: called while active list is empty\n", - __func__); - - if (!status) { - spin_unlock(&pcdev->lock); - return IRQ_NONE; - } - } - - if (status & (1 << 7)) { /* overflow */ - u32 cntl = readl(pcdev->base_emma + PRP_CNTL); - writel(cntl & ~(PRP_CNTL_CH1EN | PRP_CNTL_CH2EN), - pcdev->base_emma + PRP_CNTL); - writel(cntl, pcdev->base_emma + PRP_CNTL); - - ibuf = list_first_entry(&pcdev->active_bufs, - struct mx2_buf_internal, queue); - mx27_camera_frame_done_emma(pcdev, - ibuf->bufnum, true); - - status &= ~(1 << 7); - } else if (((status & (3 << 5)) == (3 << 5)) || - ((status & (3 << 3)) == (3 << 3))) { - /* - * Both buffers have triggered, process the one we're expecting - * to first - */ - ibuf = list_first_entry(&pcdev->active_bufs, - struct mx2_buf_internal, queue); - mx27_camera_frame_done_emma(pcdev, ibuf->bufnum, false); - status &= ~(1 << (6 - ibuf->bufnum)); /* mark processed */ - } else if ((status & (1 << 6)) || (status & (1 << 4))) { - mx27_camera_frame_done_emma(pcdev, 0, false); - } else if ((status & (1 << 5)) || (status & (1 << 3))) { - mx27_camera_frame_done_emma(pcdev, 1, false); - } - - spin_unlock(&pcdev->lock); - writel(status, pcdev->base_emma + PRP_INTRSTATUS); - - return IRQ_HANDLED; -} - -static int mx27_camera_emma_init(struct platform_device *pdev) -{ - struct mx2_camera_dev *pcdev = platform_get_drvdata(pdev); - struct resource *res_emma; - int irq_emma; - int err = 0; - - res_emma = platform_get_resource(pdev, IORESOURCE_MEM, 1); - irq_emma = platform_get_irq(pdev, 1); - if (!res_emma || !irq_emma) { - dev_err(pcdev->dev, "no EMMA resources\n"); - err = -ENODEV; - goto out; - } - - pcdev->base_emma = devm_ioremap_resource(pcdev->dev, res_emma); - if (IS_ERR(pcdev->base_emma)) { - err = PTR_ERR(pcdev->base_emma); - goto out; - } - - err = devm_request_irq(pcdev->dev, irq_emma, mx27_camera_emma_irq, 0, - MX2_CAM_DRV_NAME, pcdev); - if (err) { - dev_err(pcdev->dev, "Camera EMMA interrupt register failed\n"); - goto out; - } - - pcdev->clk_emma_ipg = devm_clk_get(pcdev->dev, "emma-ipg"); - if (IS_ERR(pcdev->clk_emma_ipg)) { - err = PTR_ERR(pcdev->clk_emma_ipg); - goto out; - } - - clk_prepare_enable(pcdev->clk_emma_ipg); - - pcdev->clk_emma_ahb = devm_clk_get(pcdev->dev, "emma-ahb"); - if (IS_ERR(pcdev->clk_emma_ahb)) { - err = PTR_ERR(pcdev->clk_emma_ahb); - goto exit_clk_emma_ipg; - } - - clk_prepare_enable(pcdev->clk_emma_ahb); - - err = mx27_camera_emma_prp_reset(pcdev); - if (err) - goto exit_clk_emma_ahb; - - return err; - -exit_clk_emma_ahb: - clk_disable_unprepare(pcdev->clk_emma_ahb); -exit_clk_emma_ipg: - clk_disable_unprepare(pcdev->clk_emma_ipg); -out: - return err; -} - -static int mx2_camera_probe(struct platform_device *pdev) -{ - struct mx2_camera_dev *pcdev; - struct resource *res_csi; - int irq_csi; - int err = 0; - - dev_dbg(&pdev->dev, "initialising\n"); - - res_csi = platform_get_resource(pdev, IORESOURCE_MEM, 0); - irq_csi = platform_get_irq(pdev, 0); - if (res_csi == NULL || irq_csi < 0) { - dev_err(&pdev->dev, "Missing platform resources data\n"); - err = -ENODEV; - goto exit; - } - - pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL); - if (!pcdev) { - dev_err(&pdev->dev, "Could not allocate pcdev\n"); - err = -ENOMEM; - goto exit; - } - - pcdev->clk_csi_ahb = devm_clk_get(&pdev->dev, "ahb"); - if (IS_ERR(pcdev->clk_csi_ahb)) { - dev_err(&pdev->dev, "Could not get csi ahb clock\n"); - err = PTR_ERR(pcdev->clk_csi_ahb); - goto exit; - } - - pcdev->clk_csi_per = devm_clk_get(&pdev->dev, "per"); - if (IS_ERR(pcdev->clk_csi_per)) { - dev_err(&pdev->dev, "Could not get csi per clock\n"); - err = PTR_ERR(pcdev->clk_csi_per); - goto exit; - } - - pcdev->pdata = pdev->dev.platform_data; - if (pcdev->pdata) { - long rate; - - pcdev->platform_flags = pcdev->pdata->flags; - - rate = clk_round_rate(pcdev->clk_csi_per, - pcdev->pdata->clk * 2); - if (rate <= 0) { - err = -ENODEV; - goto exit; - } - err = clk_set_rate(pcdev->clk_csi_per, rate); - if (err < 0) - goto exit; - } - - INIT_LIST_HEAD(&pcdev->capture); - INIT_LIST_HEAD(&pcdev->active_bufs); - INIT_LIST_HEAD(&pcdev->discard); - spin_lock_init(&pcdev->lock); - - pcdev->base_csi = devm_ioremap_resource(&pdev->dev, res_csi); - if (IS_ERR(pcdev->base_csi)) { - err = PTR_ERR(pcdev->base_csi); - goto exit; - } - - pcdev->dev = &pdev->dev; - platform_set_drvdata(pdev, pcdev); - - err = mx27_camera_emma_init(pdev); - if (err) - goto exit; - - /* - * We're done with drvdata here. Clear the pointer so that - * v4l2 core can start using drvdata on its purpose. - */ - platform_set_drvdata(pdev, NULL); - - pcdev->soc_host.drv_name = MX2_CAM_DRV_NAME, - pcdev->soc_host.ops = &mx2_soc_camera_host_ops, - pcdev->soc_host.priv = pcdev; - pcdev->soc_host.v4l2_dev.dev = &pdev->dev; - pcdev->soc_host.nr = pdev->id; - - pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); - if (IS_ERR(pcdev->alloc_ctx)) { - err = PTR_ERR(pcdev->alloc_ctx); - goto eallocctx; - } - err = soc_camera_host_register(&pcdev->soc_host); - if (err) - goto exit_free_emma; - - dev_info(&pdev->dev, "MX2 Camera (CSI) driver probed, clock frequency: %ld\n", - clk_get_rate(pcdev->clk_csi_per)); - - return 0; - -exit_free_emma: - vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); -eallocctx: - clk_disable_unprepare(pcdev->clk_emma_ipg); - clk_disable_unprepare(pcdev->clk_emma_ahb); -exit: - return err; -} - -static int mx2_camera_remove(struct platform_device *pdev) -{ - struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); - struct mx2_camera_dev *pcdev = container_of(soc_host, - struct mx2_camera_dev, soc_host); - - soc_camera_host_unregister(&pcdev->soc_host); - - vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); - - clk_disable_unprepare(pcdev->clk_emma_ipg); - clk_disable_unprepare(pcdev->clk_emma_ahb); - - dev_info(&pdev->dev, "MX2 Camera driver unloaded\n"); - - return 0; -} - -static struct platform_driver mx2_camera_driver = { - .driver = { - .name = MX2_CAM_DRV_NAME, - }, - .id_table = mx2_camera_devtype, - .remove = mx2_camera_remove, -}; - -module_platform_driver_probe(mx2_camera_driver, mx2_camera_probe); - -MODULE_DESCRIPTION("i.MX27 SoC Camera Host driver"); -MODULE_AUTHOR("Sascha Hauer "); -MODULE_LICENSE("GPL"); -MODULE_VERSION(MX2_CAM_VERSION); diff --git a/drivers/staging/media/Kconfig b/drivers/staging/media/Kconfig index 382d868747b6..11d62b2afae5 100644 --- a/drivers/staging/media/Kconfig +++ b/drivers/staging/media/Kconfig @@ -29,6 +29,8 @@ source "drivers/staging/media/mn88472/Kconfig" source "drivers/staging/media/mn88473/Kconfig" +source "drivers/staging/media/mx2/Kconfig" + source "drivers/staging/media/omap1/Kconfig" source "drivers/staging/media/omap4iss/Kconfig" diff --git a/drivers/staging/media/Makefile b/drivers/staging/media/Makefile index 89d038c1c4d5..d3ff2d054be7 100644 --- a/drivers/staging/media/Makefile +++ b/drivers/staging/media/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_I2C_BCM2048) += bcm2048/ obj-$(CONFIG_DVB_CXD2099) += cxd2099/ obj-$(CONFIG_LIRC_STAGING) += lirc/ obj-$(CONFIG_VIDEO_DM365_VPFE) += davinci_vpfe/ +obj-$(CONFIG_VIDEO_MX2) += mx2/ obj-$(CONFIG_VIDEO_OMAP1) += omap1/ obj-$(CONFIG_VIDEO_OMAP4) += omap4iss/ obj-$(CONFIG_DVB_MN88472) += mn88472/ diff --git a/drivers/staging/media/mx2/Kconfig b/drivers/staging/media/mx2/Kconfig new file mode 100644 index 000000000000..e080ab9409a5 --- /dev/null +++ b/drivers/staging/media/mx2/Kconfig @@ -0,0 +1,12 @@ +config VIDEO_MX2 + tristate "i.MX27 Camera Sensor Interface driver" + depends on VIDEO_DEV && SOC_CAMERA + depends on SOC_IMX27 || COMPILE_TEST + depends on HAS_DMA + select VIDEOBUF2_DMA_CONTIG + ---help--- + This is a v4l2 driver for the i.MX27 Camera Sensor Interface + + This driver is deprecated and will be removed soon unless someone + will start the work to convert this driver to the vb2 framework + and remove the soc-camera dependency. diff --git a/drivers/staging/media/mx2/Makefile b/drivers/staging/media/mx2/Makefile new file mode 100644 index 000000000000..fc5b2826a558 --- /dev/null +++ b/drivers/staging/media/mx2/Makefile @@ -0,0 +1,3 @@ +# Makefile for i.MX27 Camera Sensor driver + +obj-$(CONFIG_VIDEO_MX2) += mx2_camera.o diff --git a/drivers/staging/media/mx2/mx2_camera.c b/drivers/staging/media/mx2/mx2_camera.c new file mode 100644 index 000000000000..48dd5b7851b5 --- /dev/null +++ b/drivers/staging/media/mx2/mx2_camera.c @@ -0,0 +1,1636 @@ +/* + * V4L2 Driver for i.MX27 camera host + * + * Copyright (C) 2008, Sascha Hauer, Pengutronix + * Copyright (C) 2010, Baruch Siach, Orex Computed Radiography + * Copyright (C) 2012, Javier Martin, Vista Silicon S.L. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +#include + +#include + +#include + +#define MX2_CAM_DRV_NAME "mx2-camera" +#define MX2_CAM_VERSION "0.0.6" +#define MX2_CAM_DRIVER_DESCRIPTION "i.MX2x_Camera" + +/* reset values */ +#define CSICR1_RESET_VAL 0x40000800 +#define CSICR2_RESET_VAL 0x0 +#define CSICR3_RESET_VAL 0x0 + +/* csi control reg 1 */ +#define CSICR1_SWAP16_EN (1 << 31) +#define CSICR1_EXT_VSYNC (1 << 30) +#define CSICR1_EOF_INTEN (1 << 29) +#define CSICR1_PRP_IF_EN (1 << 28) +#define CSICR1_CCIR_MODE (1 << 27) +#define CSICR1_COF_INTEN (1 << 26) +#define CSICR1_SF_OR_INTEN (1 << 25) +#define CSICR1_RF_OR_INTEN (1 << 24) +#define CSICR1_STATFF_LEVEL (3 << 22) +#define CSICR1_STATFF_INTEN (1 << 21) +#define CSICR1_RXFF_LEVEL(l) (((l) & 3) << 19) +#define CSICR1_RXFF_INTEN (1 << 18) +#define CSICR1_SOF_POL (1 << 17) +#define CSICR1_SOF_INTEN (1 << 16) +#define CSICR1_MCLKDIV(d) (((d) & 0xF) << 12) +#define CSICR1_HSYNC_POL (1 << 11) +#define CSICR1_CCIR_EN (1 << 10) +#define CSICR1_MCLKEN (1 << 9) +#define CSICR1_FCC (1 << 8) +#define CSICR1_PACK_DIR (1 << 7) +#define CSICR1_CLR_STATFIFO (1 << 6) +#define CSICR1_CLR_RXFIFO (1 << 5) +#define CSICR1_GCLK_MODE (1 << 4) +#define CSICR1_INV_DATA (1 << 3) +#define CSICR1_INV_PCLK (1 << 2) +#define CSICR1_REDGE (1 << 1) +#define CSICR1_FMT_MASK (CSICR1_PACK_DIR | CSICR1_SWAP16_EN) + +#define SHIFT_STATFF_LEVEL 22 +#define SHIFT_RXFF_LEVEL 19 +#define SHIFT_MCLKDIV 12 + +#define SHIFT_FRMCNT 16 + +#define CSICR1 0x00 +#define CSICR2 0x04 +#define CSISR 0x08 +#define CSISTATFIFO 0x0c +#define CSIRFIFO 0x10 +#define CSIRXCNT 0x14 +#define CSICR3 0x1c +#define CSIDMASA_STATFIFO 0x20 +#define CSIDMATA_STATFIFO 0x24 +#define CSIDMASA_FB1 0x28 +#define CSIDMASA_FB2 0x2c +#define CSIFBUF_PARA 0x30 +#define CSIIMAG_PARA 0x34 + +/* EMMA PrP */ +#define PRP_CNTL 0x00 +#define PRP_INTR_CNTL 0x04 +#define PRP_INTRSTATUS 0x08 +#define PRP_SOURCE_Y_PTR 0x0c +#define PRP_SOURCE_CB_PTR 0x10 +#define PRP_SOURCE_CR_PTR 0x14 +#define PRP_DEST_RGB1_PTR 0x18 +#define PRP_DEST_RGB2_PTR 0x1c +#define PRP_DEST_Y_PTR 0x20 +#define PRP_DEST_CB_PTR 0x24 +#define PRP_DEST_CR_PTR 0x28 +#define PRP_SRC_FRAME_SIZE 0x2c +#define PRP_DEST_CH1_LINE_STRIDE 0x30 +#define PRP_SRC_PIXEL_FORMAT_CNTL 0x34 +#define PRP_CH1_PIXEL_FORMAT_CNTL 0x38 +#define PRP_CH1_OUT_IMAGE_SIZE 0x3c +#define PRP_CH2_OUT_IMAGE_SIZE 0x40 +#define PRP_SRC_LINE_STRIDE 0x44 +#define PRP_CSC_COEF_012 0x48 +#define PRP_CSC_COEF_345 0x4c +#define PRP_CSC_COEF_678 0x50 +#define PRP_CH1_RZ_HORI_COEF1 0x54 +#define PRP_CH1_RZ_HORI_COEF2 0x58 +#define PRP_CH1_RZ_HORI_VALID 0x5c +#define PRP_CH1_RZ_VERT_COEF1 0x60 +#define PRP_CH1_RZ_VERT_COEF2 0x64 +#define PRP_CH1_RZ_VERT_VALID 0x68 +#define PRP_CH2_RZ_HORI_COEF1 0x6c +#define PRP_CH2_RZ_HORI_COEF2 0x70 +#define PRP_CH2_RZ_HORI_VALID 0x74 +#define PRP_CH2_RZ_VERT_COEF1 0x78 +#define PRP_CH2_RZ_VERT_COEF2 0x7c +#define PRP_CH2_RZ_VERT_VALID 0x80 + +#define PRP_CNTL_CH1EN (1 << 0) +#define PRP_CNTL_CH2EN (1 << 1) +#define PRP_CNTL_CSIEN (1 << 2) +#define PRP_CNTL_DATA_IN_YUV420 (0 << 3) +#define PRP_CNTL_DATA_IN_YUV422 (1 << 3) +#define PRP_CNTL_DATA_IN_RGB16 (2 << 3) +#define PRP_CNTL_DATA_IN_RGB32 (3 << 3) +#define PRP_CNTL_CH1_OUT_RGB8 (0 << 5) +#define PRP_CNTL_CH1_OUT_RGB16 (1 << 5) +#define PRP_CNTL_CH1_OUT_RGB32 (2 << 5) +#define PRP_CNTL_CH1_OUT_YUV422 (3 << 5) +#define PRP_CNTL_CH2_OUT_YUV420 (0 << 7) +#define PRP_CNTL_CH2_OUT_YUV422 (1 << 7) +#define PRP_CNTL_CH2_OUT_YUV444 (2 << 7) +#define PRP_CNTL_CH1_LEN (1 << 9) +#define PRP_CNTL_CH2_LEN (1 << 10) +#define PRP_CNTL_SKIP_FRAME (1 << 11) +#define PRP_CNTL_SWRST (1 << 12) +#define PRP_CNTL_CLKEN (1 << 13) +#define PRP_CNTL_WEN (1 << 14) +#define PRP_CNTL_CH1BYP (1 << 15) +#define PRP_CNTL_IN_TSKIP(x) ((x) << 16) +#define PRP_CNTL_CH1_TSKIP(x) ((x) << 19) +#define PRP_CNTL_CH2_TSKIP(x) ((x) << 22) +#define PRP_CNTL_INPUT_FIFO_LEVEL(x) ((x) << 25) +#define PRP_CNTL_RZ_FIFO_LEVEL(x) ((x) << 27) +#define PRP_CNTL_CH2B1EN (1 << 29) +#define PRP_CNTL_CH2B2EN (1 << 30) +#define PRP_CNTL_CH2FEN (1 << 31) + +/* IRQ Enable and status register */ +#define PRP_INTR_RDERR (1 << 0) +#define PRP_INTR_CH1WERR (1 << 1) +#define PRP_INTR_CH2WERR (1 << 2) +#define PRP_INTR_CH1FC (1 << 3) +#define PRP_INTR_CH2FC (1 << 5) +#define PRP_INTR_LBOVF (1 << 7) +#define PRP_INTR_CH2OVF (1 << 8) + +/* Resizing registers */ +#define PRP_RZ_VALID_TBL_LEN(x) ((x) << 24) +#define PRP_RZ_VALID_BILINEAR (1 << 31) + +#define MAX_VIDEO_MEM 16 + +#define RESIZE_NUM_MIN 1 +#define RESIZE_NUM_MAX 20 +#define BC_COEF 3 +#define SZ_COEF (1 << BC_COEF) + +#define RESIZE_DIR_H 0 +#define RESIZE_DIR_V 1 + +#define RESIZE_ALGO_BILINEAR 0 +#define RESIZE_ALGO_AVERAGING 1 + +struct mx2_prp_cfg { + int channel; + u32 in_fmt; + u32 out_fmt; + u32 src_pixel; + u32 ch1_pixel; + u32 irq_flags; + u32 csicr1; +}; + +/* prp resizing parameters */ +struct emma_prp_resize { + int algo; /* type of algorithm used */ + int len; /* number of coefficients */ + unsigned char s[RESIZE_NUM_MAX]; /* table of coefficients */ +}; + +/* prp configuration for a client-host fmt pair */ +struct mx2_fmt_cfg { + u32 in_fmt; + u32 out_fmt; + struct mx2_prp_cfg cfg; +}; + +struct mx2_buf_internal { + struct list_head queue; + int bufnum; + bool discard; +}; + +/* buffer for one video frame */ +struct mx2_buffer { + /* common v4l buffer stuff -- must be first */ + struct vb2_v4l2_buffer vb; + struct mx2_buf_internal internal; +}; + +enum mx2_camera_type { + IMX27_CAMERA, +}; + +struct mx2_camera_dev { + struct device *dev; + struct soc_camera_host soc_host; + struct clk *clk_emma_ahb, *clk_emma_ipg; + struct clk *clk_csi_ahb, *clk_csi_per; + + void __iomem *base_csi, *base_emma; + + struct mx2_camera_platform_data *pdata; + unsigned long platform_flags; + + struct list_head capture; + struct list_head active_bufs; + struct list_head discard; + + spinlock_t lock; + + int dma; + struct mx2_buffer *active; + struct mx2_buffer *fb1_active; + struct mx2_buffer *fb2_active; + + u32 csicr1; + enum mx2_camera_type devtype; + + struct mx2_buf_internal buf_discard[2]; + void *discard_buffer; + dma_addr_t discard_buffer_dma; + size_t discard_size; + struct mx2_fmt_cfg *emma_prp; + struct emma_prp_resize resizing[2]; + unsigned int s_width, s_height; + u32 frame_count; + struct vb2_alloc_ctx *alloc_ctx; +}; + +static struct platform_device_id mx2_camera_devtype[] = { + { + .name = "imx27-camera", + .driver_data = IMX27_CAMERA, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(platform, mx2_camera_devtype); + +static struct mx2_buffer *mx2_ibuf_to_buf(struct mx2_buf_internal *int_buf) +{ + return container_of(int_buf, struct mx2_buffer, internal); +} + +static struct mx2_fmt_cfg mx27_emma_prp_table[] = { + /* + * This is a generic configuration which is valid for most + * prp input-output format combinations. + * We set the incoming and outgoing pixelformat to a + * 16 Bit wide format and adjust the bytesperline + * accordingly. With this configuration the inputdata + * will not be changed by the emma and could be any type + * of 16 Bit Pixelformat. + */ + { + .in_fmt = 0, + .out_fmt = 0, + .cfg = { + .channel = 1, + .in_fmt = PRP_CNTL_DATA_IN_RGB16, + .out_fmt = PRP_CNTL_CH1_OUT_RGB16, + .src_pixel = 0x2ca00565, /* RGB565 */ + .ch1_pixel = 0x2ca00565, /* RGB565 */ + .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH1WERR | + PRP_INTR_CH1FC | PRP_INTR_LBOVF, + .csicr1 = 0, + } + }, + { + .in_fmt = MEDIA_BUS_FMT_UYVY8_2X8, + .out_fmt = V4L2_PIX_FMT_YUYV, + .cfg = { + .channel = 1, + .in_fmt = PRP_CNTL_DATA_IN_YUV422, + .out_fmt = PRP_CNTL_CH1_OUT_YUV422, + .src_pixel = 0x22000888, /* YUV422 (YUYV) */ + .ch1_pixel = 0x62000888, /* YUV422 (YUYV) */ + .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH1WERR | + PRP_INTR_CH1FC | PRP_INTR_LBOVF, + .csicr1 = CSICR1_SWAP16_EN, + } + }, + { + .in_fmt = MEDIA_BUS_FMT_YUYV8_2X8, + .out_fmt = V4L2_PIX_FMT_YUYV, + .cfg = { + .channel = 1, + .in_fmt = PRP_CNTL_DATA_IN_YUV422, + .out_fmt = PRP_CNTL_CH1_OUT_YUV422, + .src_pixel = 0x22000888, /* YUV422 (YUYV) */ + .ch1_pixel = 0x62000888, /* YUV422 (YUYV) */ + .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH1WERR | + PRP_INTR_CH1FC | PRP_INTR_LBOVF, + .csicr1 = CSICR1_PACK_DIR, + } + }, + { + .in_fmt = MEDIA_BUS_FMT_YUYV8_2X8, + .out_fmt = V4L2_PIX_FMT_YUV420, + .cfg = { + .channel = 2, + .in_fmt = PRP_CNTL_DATA_IN_YUV422, + .out_fmt = PRP_CNTL_CH2_OUT_YUV420, + .src_pixel = 0x22000888, /* YUV422 (YUYV) */ + .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH2WERR | + PRP_INTR_CH2FC | PRP_INTR_LBOVF | + PRP_INTR_CH2OVF, + .csicr1 = CSICR1_PACK_DIR, + } + }, + { + .in_fmt = MEDIA_BUS_FMT_UYVY8_2X8, + .out_fmt = V4L2_PIX_FMT_YUV420, + .cfg = { + .channel = 2, + .in_fmt = PRP_CNTL_DATA_IN_YUV422, + .out_fmt = PRP_CNTL_CH2_OUT_YUV420, + .src_pixel = 0x22000888, /* YUV422 (YUYV) */ + .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH2WERR | + PRP_INTR_CH2FC | PRP_INTR_LBOVF | + PRP_INTR_CH2OVF, + .csicr1 = CSICR1_SWAP16_EN, + } + }, +}; + +static struct mx2_fmt_cfg *mx27_emma_prp_get_format(u32 in_fmt, u32 out_fmt) +{ + int i; + + for (i = 1; i < ARRAY_SIZE(mx27_emma_prp_table); i++) + if ((mx27_emma_prp_table[i].in_fmt == in_fmt) && + (mx27_emma_prp_table[i].out_fmt == out_fmt)) { + return &mx27_emma_prp_table[i]; + } + /* If no match return the most generic configuration */ + return &mx27_emma_prp_table[0]; +}; + +static void mx27_update_emma_buf(struct mx2_camera_dev *pcdev, + unsigned long phys, int bufnum) +{ + struct mx2_fmt_cfg *prp = pcdev->emma_prp; + + if (prp->cfg.channel == 1) { + writel(phys, pcdev->base_emma + + PRP_DEST_RGB1_PTR + 4 * bufnum); + } else { + writel(phys, pcdev->base_emma + + PRP_DEST_Y_PTR - 0x14 * bufnum); + if (prp->out_fmt == V4L2_PIX_FMT_YUV420) { + u32 imgsize = pcdev->soc_host.icd->user_height * + pcdev->soc_host.icd->user_width; + + writel(phys + imgsize, pcdev->base_emma + + PRP_DEST_CB_PTR - 0x14 * bufnum); + writel(phys + ((5 * imgsize) / 4), pcdev->base_emma + + PRP_DEST_CR_PTR - 0x14 * bufnum); + } + } +} + +static void mx2_camera_deactivate(struct mx2_camera_dev *pcdev) +{ + clk_disable_unprepare(pcdev->clk_csi_ahb); + clk_disable_unprepare(pcdev->clk_csi_per); + writel(0, pcdev->base_csi + CSICR1); + writel(0, pcdev->base_emma + PRP_CNTL); +} + +static int mx2_camera_add_device(struct soc_camera_device *icd) +{ + dev_info(icd->parent, "Camera driver attached to camera %d\n", + icd->devnum); + + return 0; +} + +static void mx2_camera_remove_device(struct soc_camera_device *icd) +{ + dev_info(icd->parent, "Camera driver detached from camera %d\n", + icd->devnum); +} + +/* + * The following two functions absolutely depend on the fact, that + * there can be only one camera on mx2 camera sensor interface + */ +static int mx2_camera_clock_start(struct soc_camera_host *ici) +{ + struct mx2_camera_dev *pcdev = ici->priv; + int ret; + u32 csicr1; + + ret = clk_prepare_enable(pcdev->clk_csi_ahb); + if (ret < 0) + return ret; + + ret = clk_prepare_enable(pcdev->clk_csi_per); + if (ret < 0) + goto exit_csi_ahb; + + csicr1 = CSICR1_MCLKEN | CSICR1_PRP_IF_EN | CSICR1_FCC | + CSICR1_RXFF_LEVEL(0); + + pcdev->csicr1 = csicr1; + writel(pcdev->csicr1, pcdev->base_csi + CSICR1); + + pcdev->frame_count = 0; + + return 0; + +exit_csi_ahb: + clk_disable_unprepare(pcdev->clk_csi_ahb); + + return ret; +} + +static void mx2_camera_clock_stop(struct soc_camera_host *ici) +{ + struct mx2_camera_dev *pcdev = ici->priv; + + mx2_camera_deactivate(pcdev); +} + +/* + * Videobuf operations + */ +static int mx2_videobuf_setup(struct vb2_queue *vq, + unsigned int *count, unsigned int *num_planes, + unsigned int sizes[], void *alloc_ctxs[]) +{ + struct soc_camera_device *icd = soc_camera_from_vb2q(vq); + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); + struct mx2_camera_dev *pcdev = ici->priv; + + dev_dbg(icd->parent, "count=%d, size=%d\n", *count, sizes[0]); + + alloc_ctxs[0] = pcdev->alloc_ctx; + + sizes[0] = icd->sizeimage; + + if (0 == *count) + *count = 32; + if (!*num_planes && + sizes[0] * *count > MAX_VIDEO_MEM * 1024 * 1024) + *count = (MAX_VIDEO_MEM * 1024 * 1024) / sizes[0]; + + *num_planes = 1; + + return 0; +} + +static int mx2_videobuf_prepare(struct vb2_buffer *vb) +{ + struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); + int ret = 0; + + dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, + vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); + +#ifdef DEBUG + /* + * This can be useful if you want to see if we actually fill + * the buffer with something + */ + memset((void *)vb2_plane_vaddr(vb, 0), + 0xaa, vb2_get_plane_payload(vb, 0)); +#endif + + vb2_set_plane_payload(vb, 0, icd->sizeimage); + if (vb2_plane_vaddr(vb, 0) && + vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) { + ret = -EINVAL; + goto out; + } + + return 0; + +out: + return ret; +} + +static void mx2_videobuf_queue(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); + struct soc_camera_host *ici = + to_soc_camera_host(icd->parent); + struct mx2_camera_dev *pcdev = ici->priv; + struct mx2_buffer *buf = container_of(vbuf, struct mx2_buffer, vb); + unsigned long flags; + + dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, + vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); + + spin_lock_irqsave(&pcdev->lock, flags); + + list_add_tail(&buf->internal.queue, &pcdev->capture); + + spin_unlock_irqrestore(&pcdev->lock, flags); +} + +static void mx27_camera_emma_buf_init(struct soc_camera_device *icd, + int bytesperline) +{ + struct soc_camera_host *ici = + to_soc_camera_host(icd->parent); + struct mx2_camera_dev *pcdev = ici->priv; + struct mx2_fmt_cfg *prp = pcdev->emma_prp; + + writel((pcdev->s_width << 16) | pcdev->s_height, + pcdev->base_emma + PRP_SRC_FRAME_SIZE); + writel(prp->cfg.src_pixel, + pcdev->base_emma + PRP_SRC_PIXEL_FORMAT_CNTL); + if (prp->cfg.channel == 1) { + writel((icd->user_width << 16) | icd->user_height, + pcdev->base_emma + PRP_CH1_OUT_IMAGE_SIZE); + writel(bytesperline, + pcdev->base_emma + PRP_DEST_CH1_LINE_STRIDE); + writel(prp->cfg.ch1_pixel, + pcdev->base_emma + PRP_CH1_PIXEL_FORMAT_CNTL); + } else { /* channel 2 */ + writel((icd->user_width << 16) | icd->user_height, + pcdev->base_emma + PRP_CH2_OUT_IMAGE_SIZE); + } + + /* Enable interrupts */ + writel(prp->cfg.irq_flags, pcdev->base_emma + PRP_INTR_CNTL); +} + +static void mx2_prp_resize_commit(struct mx2_camera_dev *pcdev) +{ + int dir; + + for (dir = RESIZE_DIR_H; dir <= RESIZE_DIR_V; dir++) { + unsigned char *s = pcdev->resizing[dir].s; + int len = pcdev->resizing[dir].len; + unsigned int coeff[2] = {0, 0}; + unsigned int valid = 0; + int i; + + if (len == 0) + continue; + + for (i = RESIZE_NUM_MAX - 1; i >= 0; i--) { + int j; + + j = i > 9 ? 1 : 0; + coeff[j] = (coeff[j] << BC_COEF) | + (s[i] & (SZ_COEF - 1)); + + if (i == 5 || i == 15) + coeff[j] <<= 1; + + valid = (valid << 1) | (s[i] >> BC_COEF); + } + + valid |= PRP_RZ_VALID_TBL_LEN(len); + + if (pcdev->resizing[dir].algo == RESIZE_ALGO_BILINEAR) + valid |= PRP_RZ_VALID_BILINEAR; + + if (pcdev->emma_prp->cfg.channel == 1) { + if (dir == RESIZE_DIR_H) { + writel(coeff[0], pcdev->base_emma + + PRP_CH1_RZ_HORI_COEF1); + writel(coeff[1], pcdev->base_emma + + PRP_CH1_RZ_HORI_COEF2); + writel(valid, pcdev->base_emma + + PRP_CH1_RZ_HORI_VALID); + } else { + writel(coeff[0], pcdev->base_emma + + PRP_CH1_RZ_VERT_COEF1); + writel(coeff[1], pcdev->base_emma + + PRP_CH1_RZ_VERT_COEF2); + writel(valid, pcdev->base_emma + + PRP_CH1_RZ_VERT_VALID); + } + } else { + if (dir == RESIZE_DIR_H) { + writel(coeff[0], pcdev->base_emma + + PRP_CH2_RZ_HORI_COEF1); + writel(coeff[1], pcdev->base_emma + + PRP_CH2_RZ_HORI_COEF2); + writel(valid, pcdev->base_emma + + PRP_CH2_RZ_HORI_VALID); + } else { + writel(coeff[0], pcdev->base_emma + + PRP_CH2_RZ_VERT_COEF1); + writel(coeff[1], pcdev->base_emma + + PRP_CH2_RZ_VERT_COEF2); + writel(valid, pcdev->base_emma + + PRP_CH2_RZ_VERT_VALID); + } + } + } +} + +static int mx2_start_streaming(struct vb2_queue *q, unsigned int count) +{ + struct soc_camera_device *icd = soc_camera_from_vb2q(q); + struct soc_camera_host *ici = + to_soc_camera_host(icd->parent); + struct mx2_camera_dev *pcdev = ici->priv; + struct mx2_fmt_cfg *prp = pcdev->emma_prp; + struct vb2_buffer *vb; + struct mx2_buffer *buf; + unsigned long phys; + int bytesperline; + unsigned long flags; + + if (count < 2) + return -ENOBUFS; + + spin_lock_irqsave(&pcdev->lock, flags); + + buf = list_first_entry(&pcdev->capture, struct mx2_buffer, + internal.queue); + buf->internal.bufnum = 0; + vb = &buf->vb.vb2_buf; + + phys = vb2_dma_contig_plane_dma_addr(vb, 0); + mx27_update_emma_buf(pcdev, phys, buf->internal.bufnum); + list_move_tail(pcdev->capture.next, &pcdev->active_bufs); + + buf = list_first_entry(&pcdev->capture, struct mx2_buffer, + internal.queue); + buf->internal.bufnum = 1; + vb = &buf->vb.vb2_buf; + + phys = vb2_dma_contig_plane_dma_addr(vb, 0); + mx27_update_emma_buf(pcdev, phys, buf->internal.bufnum); + list_move_tail(pcdev->capture.next, &pcdev->active_bufs); + + bytesperline = soc_mbus_bytes_per_line(icd->user_width, + icd->current_fmt->host_fmt); + if (bytesperline < 0) { + spin_unlock_irqrestore(&pcdev->lock, flags); + return bytesperline; + } + + /* + * I didn't manage to properly enable/disable the prp + * on a per frame basis during running transfers, + * thus we allocate a buffer here and use it to + * discard frames when no buffer is available. + * Feel free to work on this ;) + */ + pcdev->discard_size = icd->user_height * bytesperline; + pcdev->discard_buffer = dma_alloc_coherent(ici->v4l2_dev.dev, + pcdev->discard_size, + &pcdev->discard_buffer_dma, GFP_ATOMIC); + if (!pcdev->discard_buffer) { + spin_unlock_irqrestore(&pcdev->lock, flags); + return -ENOMEM; + } + + pcdev->buf_discard[0].discard = true; + list_add_tail(&pcdev->buf_discard[0].queue, + &pcdev->discard); + + pcdev->buf_discard[1].discard = true; + list_add_tail(&pcdev->buf_discard[1].queue, + &pcdev->discard); + + mx2_prp_resize_commit(pcdev); + + mx27_camera_emma_buf_init(icd, bytesperline); + + if (prp->cfg.channel == 1) { + writel(PRP_CNTL_CH1EN | + PRP_CNTL_CSIEN | + prp->cfg.in_fmt | + prp->cfg.out_fmt | + PRP_CNTL_CH1_LEN | + PRP_CNTL_CH1BYP | + PRP_CNTL_CH1_TSKIP(0) | + PRP_CNTL_IN_TSKIP(0), + pcdev->base_emma + PRP_CNTL); + } else { + writel(PRP_CNTL_CH2EN | + PRP_CNTL_CSIEN | + prp->cfg.in_fmt | + prp->cfg.out_fmt | + PRP_CNTL_CH2_LEN | + PRP_CNTL_CH2_TSKIP(0) | + PRP_CNTL_IN_TSKIP(0), + pcdev->base_emma + PRP_CNTL); + } + spin_unlock_irqrestore(&pcdev->lock, flags); + + return 0; +} + +static void mx2_stop_streaming(struct vb2_queue *q) +{ + struct soc_camera_device *icd = soc_camera_from_vb2q(q); + struct soc_camera_host *ici = + to_soc_camera_host(icd->parent); + struct mx2_camera_dev *pcdev = ici->priv; + struct mx2_fmt_cfg *prp = pcdev->emma_prp; + unsigned long flags; + void *b; + u32 cntl; + + spin_lock_irqsave(&pcdev->lock, flags); + + cntl = readl(pcdev->base_emma + PRP_CNTL); + if (prp->cfg.channel == 1) { + writel(cntl & ~PRP_CNTL_CH1EN, + pcdev->base_emma + PRP_CNTL); + } else { + writel(cntl & ~PRP_CNTL_CH2EN, + pcdev->base_emma + PRP_CNTL); + } + INIT_LIST_HEAD(&pcdev->capture); + INIT_LIST_HEAD(&pcdev->active_bufs); + INIT_LIST_HEAD(&pcdev->discard); + + b = pcdev->discard_buffer; + pcdev->discard_buffer = NULL; + + spin_unlock_irqrestore(&pcdev->lock, flags); + + dma_free_coherent(ici->v4l2_dev.dev, + pcdev->discard_size, b, pcdev->discard_buffer_dma); +} + +static struct vb2_ops mx2_videobuf_ops = { + .queue_setup = mx2_videobuf_setup, + .buf_prepare = mx2_videobuf_prepare, + .buf_queue = mx2_videobuf_queue, + .start_streaming = mx2_start_streaming, + .stop_streaming = mx2_stop_streaming, +}; + +static int mx2_camera_init_videobuf(struct vb2_queue *q, + struct soc_camera_device *icd) +{ + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; + q->io_modes = VB2_MMAP | VB2_USERPTR; + q->drv_priv = icd; + q->ops = &mx2_videobuf_ops; + q->mem_ops = &vb2_dma_contig_memops; + q->buf_struct_size = sizeof(struct mx2_buffer); + q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; + + return vb2_queue_init(q); +} + +#define MX2_BUS_FLAGS (V4L2_MBUS_MASTER | \ + V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ + V4L2_MBUS_VSYNC_ACTIVE_LOW | \ + V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ + V4L2_MBUS_HSYNC_ACTIVE_LOW | \ + V4L2_MBUS_PCLK_SAMPLE_RISING | \ + V4L2_MBUS_PCLK_SAMPLE_FALLING | \ + V4L2_MBUS_DATA_ACTIVE_HIGH | \ + V4L2_MBUS_DATA_ACTIVE_LOW) + +static int mx27_camera_emma_prp_reset(struct mx2_camera_dev *pcdev) +{ + int count = 0; + + readl(pcdev->base_emma + PRP_CNTL); + writel(PRP_CNTL_SWRST, pcdev->base_emma + PRP_CNTL); + while (count++ < 100) { + if (!(readl(pcdev->base_emma + PRP_CNTL) & PRP_CNTL_SWRST)) + return 0; + barrier(); + udelay(1); + } + + return -ETIMEDOUT; +} + +static int mx2_camera_set_bus_param(struct soc_camera_device *icd) +{ + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); + struct mx2_camera_dev *pcdev = ici->priv; + struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; + unsigned long common_flags; + int ret; + int bytesperline; + u32 csicr1 = pcdev->csicr1; + + ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); + if (!ret) { + common_flags = soc_mbus_config_compatible(&cfg, MX2_BUS_FLAGS); + if (!common_flags) { + dev_warn(icd->parent, + "Flags incompatible: camera 0x%x, host 0x%x\n", + cfg.flags, MX2_BUS_FLAGS); + return -EINVAL; + } + } else if (ret != -ENOIOCTLCMD) { + return ret; + } else { + common_flags = MX2_BUS_FLAGS; + } + + if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && + (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { + if (pcdev->platform_flags & MX2_CAMERA_HSYNC_HIGH) + common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; + else + common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; + } + + if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) && + (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) { + if (pcdev->platform_flags & MX2_CAMERA_PCLK_SAMPLE_RISING) + common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING; + else + common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING; + } + + cfg.flags = common_flags; + ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); + if (ret < 0 && ret != -ENOIOCTLCMD) { + dev_dbg(icd->parent, "camera s_mbus_config(0x%lx) returned %d\n", + common_flags, ret); + return ret; + } + + csicr1 = (csicr1 & ~CSICR1_FMT_MASK) | pcdev->emma_prp->cfg.csicr1; + + if (common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) + csicr1 |= CSICR1_REDGE; + if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) + csicr1 |= CSICR1_SOF_POL; + if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) + csicr1 |= CSICR1_HSYNC_POL; + if (pcdev->platform_flags & MX2_CAMERA_EXT_VSYNC) + csicr1 |= CSICR1_EXT_VSYNC; + if (pcdev->platform_flags & MX2_CAMERA_CCIR) + csicr1 |= CSICR1_CCIR_EN; + if (pcdev->platform_flags & MX2_CAMERA_CCIR_INTERLACE) + csicr1 |= CSICR1_CCIR_MODE; + if (pcdev->platform_flags & MX2_CAMERA_GATED_CLOCK) + csicr1 |= CSICR1_GCLK_MODE; + if (pcdev->platform_flags & MX2_CAMERA_INV_DATA) + csicr1 |= CSICR1_INV_DATA; + + pcdev->csicr1 = csicr1; + + bytesperline = soc_mbus_bytes_per_line(icd->user_width, + icd->current_fmt->host_fmt); + if (bytesperline < 0) + return bytesperline; + + ret = mx27_camera_emma_prp_reset(pcdev); + if (ret) + return ret; + + writel(pcdev->csicr1, pcdev->base_csi + CSICR1); + + return 0; +} + +static int mx2_camera_set_crop(struct soc_camera_device *icd, + const struct v4l2_crop *a) +{ + struct v4l2_crop a_writable = *a; + struct v4l2_rect *rect = &a_writable.c; + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); + struct v4l2_subdev_format fmt = { + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + }; + struct v4l2_mbus_framefmt *mf = &fmt.format; + int ret; + + soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096); + soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096); + + ret = v4l2_subdev_call(sd, video, s_crop, a); + if (ret < 0) + return ret; + + /* The capture device might have changed its output */ + ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &fmt); + if (ret < 0) + return ret; + + dev_dbg(icd->parent, "Sensor cropped %dx%d\n", + mf->width, mf->height); + + icd->user_width = mf->width; + icd->user_height = mf->height; + + return ret; +} + +static int mx2_camera_get_formats(struct soc_camera_device *icd, + unsigned int idx, + struct soc_camera_format_xlate *xlate) +{ + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); + const struct soc_mbus_pixelfmt *fmt; + struct device *dev = icd->parent; + struct v4l2_subdev_mbus_code_enum code = { + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + .index = idx, + }; + int ret, formats = 0; + + ret = v4l2_subdev_call(sd, pad, enum_mbus_code, NULL, &code); + if (ret < 0) + /* no more formats */ + return 0; + + fmt = soc_mbus_get_fmtdesc(code.code); + if (!fmt) { + dev_err(dev, "Invalid format code #%u: %d\n", idx, code.code); + return 0; + } + + if (code.code == MEDIA_BUS_FMT_YUYV8_2X8 || + code.code == MEDIA_BUS_FMT_UYVY8_2X8) { + formats++; + if (xlate) { + /* + * CH2 can output YUV420 which is a standard format in + * soc_mediabus.c + */ + xlate->host_fmt = + soc_mbus_get_fmtdesc(MEDIA_BUS_FMT_YUYV8_1_5X8); + xlate->code = code.code; + dev_dbg(dev, "Providing host format %s for sensor code %d\n", + xlate->host_fmt->name, code.code); + xlate++; + } + } + + if (code.code == MEDIA_BUS_FMT_UYVY8_2X8) { + formats++; + if (xlate) { + xlate->host_fmt = + soc_mbus_get_fmtdesc(MEDIA_BUS_FMT_YUYV8_2X8); + xlate->code = code.code; + dev_dbg(dev, "Providing host format %s for sensor code %d\n", + xlate->host_fmt->name, code.code); + xlate++; + } + } + + /* Generic pass-trough */ + formats++; + if (xlate) { + xlate->host_fmt = fmt; + xlate->code = code.code; + xlate++; + } + return formats; +} + +static int mx2_emmaprp_resize(struct mx2_camera_dev *pcdev, + struct v4l2_mbus_framefmt *mf_in, + struct v4l2_pix_format *pix_out, bool apply) +{ + unsigned int num, den; + unsigned long m; + int i, dir; + + for (dir = RESIZE_DIR_H; dir <= RESIZE_DIR_V; dir++) { + struct emma_prp_resize tmprsz; + unsigned char *s = tmprsz.s; + int len = 0; + int in, out; + + if (dir == RESIZE_DIR_H) { + in = mf_in->width; + out = pix_out->width; + } else { + in = mf_in->height; + out = pix_out->height; + } + + if (in < out) + return -EINVAL; + else if (in == out) + continue; + + /* Calculate ratio */ + m = gcd(in, out); + num = in / m; + den = out / m; + if (num > RESIZE_NUM_MAX) + return -EINVAL; + + if ((num >= 2 * den) && (den == 1) && + (num < 9) && (!(num & 0x01))) { + int sum = 0; + int j; + + /* Average scaling for >= 2:1 ratios */ + /* Support can be added for num >=9 and odd values */ + + tmprsz.algo = RESIZE_ALGO_AVERAGING; + len = num; + + for (i = 0; i < (len / 2); i++) + s[i] = 8; + + do { + for (i = 0; i < (len / 2); i++) { + s[i] = s[i] >> 1; + sum = 0; + for (j = 0; j < (len / 2); j++) + sum += s[j]; + if (sum == 4) + break; + } + } while (sum != 4); + + for (i = (len / 2); i < len; i++) + s[i] = s[len - i - 1]; + + s[len - 1] |= SZ_COEF; + } else { + /* bilinear scaling for < 2:1 ratios */ + int v; /* overflow counter */ + int coeff, nxt; /* table output */ + int in_pos_inc = 2 * den; + int out_pos = num; + int out_pos_inc = 2 * num; + int init_carry = num - den; + int carry = init_carry; + + tmprsz.algo = RESIZE_ALGO_BILINEAR; + v = den + in_pos_inc; + do { + coeff = v - out_pos; + out_pos += out_pos_inc; + carry += out_pos_inc; + for (nxt = 0; v < out_pos; nxt++) { + v += in_pos_inc; + carry -= in_pos_inc; + } + + if (len > RESIZE_NUM_MAX) + return -EINVAL; + + coeff = ((coeff << BC_COEF) + + (in_pos_inc >> 1)) / in_pos_inc; + + if (coeff >= (SZ_COEF - 1)) + coeff--; + + coeff |= SZ_COEF; + s[len] = (unsigned char)coeff; + len++; + + for (i = 1; i < nxt; i++) { + if (len >= RESIZE_NUM_MAX) + return -EINVAL; + s[len] = 0; + len++; + } + } while (carry != init_carry); + } + tmprsz.len = len; + if (dir == RESIZE_DIR_H) + mf_in->width = pix_out->width; + else + mf_in->height = pix_out->height; + + if (apply) + memcpy(&pcdev->resizing[dir], &tmprsz, sizeof(tmprsz)); + } + return 0; +} + +static int mx2_camera_set_fmt(struct soc_camera_device *icd, + struct v4l2_format *f) +{ + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); + struct mx2_camera_dev *pcdev = ici->priv; + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); + const struct soc_camera_format_xlate *xlate; + struct v4l2_pix_format *pix = &f->fmt.pix; + struct v4l2_subdev_format format = { + .which = V4L2_SUBDEV_FORMAT_ACTIVE, + }; + struct v4l2_mbus_framefmt *mf = &format.format; + int ret; + + dev_dbg(icd->parent, "%s: requested params: width = %d, height = %d\n", + __func__, pix->width, pix->height); + + xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); + if (!xlate) { + dev_warn(icd->parent, "Format %x not found\n", + pix->pixelformat); + return -EINVAL; + } + + mf->width = pix->width; + mf->height = pix->height; + mf->field = pix->field; + mf->colorspace = pix->colorspace; + mf->code = xlate->code; + + ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &format); + if (ret < 0 && ret != -ENOIOCTLCMD) + return ret; + + /* Store width and height returned by the sensor for resizing */ + pcdev->s_width = mf->width; + pcdev->s_height = mf->height; + dev_dbg(icd->parent, "%s: sensor params: width = %d, height = %d\n", + __func__, pcdev->s_width, pcdev->s_height); + + pcdev->emma_prp = mx27_emma_prp_get_format(xlate->code, + xlate->host_fmt->fourcc); + + memset(pcdev->resizing, 0, sizeof(pcdev->resizing)); + if ((mf->width != pix->width || mf->height != pix->height) && + pcdev->emma_prp->cfg.in_fmt == PRP_CNTL_DATA_IN_YUV422) { + if (mx2_emmaprp_resize(pcdev, mf, pix, true) < 0) + dev_dbg(icd->parent, "%s: can't resize\n", __func__); + } + + if (mf->code != xlate->code) + return -EINVAL; + + pix->width = mf->width; + pix->height = mf->height; + pix->field = mf->field; + pix->colorspace = mf->colorspace; + icd->current_fmt = xlate; + + dev_dbg(icd->parent, "%s: returned params: width = %d, height = %d\n", + __func__, pix->width, pix->height); + + return 0; +} + +static int mx2_camera_try_fmt(struct soc_camera_device *icd, + struct v4l2_format *f) +{ + struct v4l2_subdev *sd = soc_camera_to_subdev(icd); + const struct soc_camera_format_xlate *xlate; + struct v4l2_pix_format *pix = &f->fmt.pix; + struct v4l2_subdev_pad_config pad_cfg; + struct v4l2_subdev_format format = { + .which = V4L2_SUBDEV_FORMAT_TRY, + }; + struct v4l2_mbus_framefmt *mf = &format.format; + __u32 pixfmt = pix->pixelformat; + struct soc_camera_host *ici = to_soc_camera_host(icd->parent); + struct mx2_camera_dev *pcdev = ici->priv; + struct mx2_fmt_cfg *emma_prp; + int ret; + + dev_dbg(icd->parent, "%s: requested params: width = %d, height = %d\n", + __func__, pix->width, pix->height); + + xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); + if (pixfmt && !xlate) { + dev_warn(icd->parent, "Format %x not found\n", pixfmt); + return -EINVAL; + } + + /* + * limit to MX27 hardware capabilities: width must be a multiple of 8 as + * requested by the CSI. (Table 39-2 in the i.MX27 Reference Manual). + */ + pix->width &= ~0x7; + + /* limit to sensor capabilities */ + mf->width = pix->width; + mf->height = pix->height; + mf->field = pix->field; + mf->colorspace = pix->colorspace; + mf->code = xlate->code; + + ret = v4l2_subdev_call(sd, pad, set_fmt, &pad_cfg, &format); + if (ret < 0) + return ret; + + dev_dbg(icd->parent, "%s: sensor params: width = %d, height = %d\n", + __func__, pcdev->s_width, pcdev->s_height); + + /* If the sensor does not support image size try PrP resizing */ + emma_prp = mx27_emma_prp_get_format(xlate->code, + xlate->host_fmt->fourcc); + + if ((mf->width != pix->width || mf->height != pix->height) && + emma_prp->cfg.in_fmt == PRP_CNTL_DATA_IN_YUV422) { + if (mx2_emmaprp_resize(pcdev, mf, pix, false) < 0) + dev_dbg(icd->parent, "%s: can't resize\n", __func__); + } + + if (mf->field == V4L2_FIELD_ANY) + mf->field = V4L2_FIELD_NONE; + /* + * Driver supports interlaced images provided they have + * both fields so that they can be processed as if they + * were progressive. + */ + if (mf->field != V4L2_FIELD_NONE && !V4L2_FIELD_HAS_BOTH(mf->field)) { + dev_err(icd->parent, "Field type %d unsupported.\n", + mf->field); + return -EINVAL; + } + + pix->width = mf->width; + pix->height = mf->height; + pix->field = mf->field; + pix->colorspace = mf->colorspace; + + dev_dbg(icd->parent, "%s: returned params: width = %d, height = %d\n", + __func__, pix->width, pix->height); + + return 0; +} + +static int mx2_camera_querycap(struct soc_camera_host *ici, + struct v4l2_capability *cap) +{ + /* cap->name is set by the friendly caller:-> */ + strlcpy(cap->card, MX2_CAM_DRIVER_DESCRIPTION, sizeof(cap->card)); + cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; + cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; + + return 0; +} + +static unsigned int mx2_camera_poll(struct file *file, poll_table *pt) +{ + struct soc_camera_device *icd = file->private_data; + + return vb2_poll(&icd->vb2_vidq, file, pt); +} + +static struct soc_camera_host_ops mx2_soc_camera_host_ops = { + .owner = THIS_MODULE, + .add = mx2_camera_add_device, + .remove = mx2_camera_remove_device, + .clock_start = mx2_camera_clock_start, + .clock_stop = mx2_camera_clock_stop, + .set_fmt = mx2_camera_set_fmt, + .set_crop = mx2_camera_set_crop, + .get_formats = mx2_camera_get_formats, + .try_fmt = mx2_camera_try_fmt, + .init_videobuf2 = mx2_camera_init_videobuf, + .poll = mx2_camera_poll, + .querycap = mx2_camera_querycap, + .set_bus_param = mx2_camera_set_bus_param, +}; + +static void mx27_camera_frame_done_emma(struct mx2_camera_dev *pcdev, + int bufnum, bool err) +{ +#ifdef DEBUG + struct mx2_fmt_cfg *prp = pcdev->emma_prp; +#endif + struct mx2_buf_internal *ibuf; + struct mx2_buffer *buf; + struct vb2_buffer *vb; + struct vb2_v4l2_buffer *vbuf; + unsigned long phys; + + ibuf = list_first_entry(&pcdev->active_bufs, struct mx2_buf_internal, + queue); + + BUG_ON(ibuf->bufnum != bufnum); + + if (ibuf->discard) { + /* + * Discard buffer must not be returned to user space. + * Just return it to the discard queue. + */ + list_move_tail(pcdev->active_bufs.next, &pcdev->discard); + } else { + buf = mx2_ibuf_to_buf(ibuf); + + vb = &buf->vb.vb2_buf; + vbuf = to_vb2_v4l2_buffer(vb); +#ifdef DEBUG + phys = vb2_dma_contig_plane_dma_addr(vb, 0); + if (prp->cfg.channel == 1) { + if (readl(pcdev->base_emma + PRP_DEST_RGB1_PTR + + 4 * bufnum) != phys) { + dev_err(pcdev->dev, "%lx != %x\n", phys, + readl(pcdev->base_emma + + PRP_DEST_RGB1_PTR + 4 * bufnum)); + } + } else { + if (readl(pcdev->base_emma + PRP_DEST_Y_PTR - + 0x14 * bufnum) != phys) { + dev_err(pcdev->dev, "%lx != %x\n", phys, + readl(pcdev->base_emma + + PRP_DEST_Y_PTR - 0x14 * bufnum)); + } + } +#endif + dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%p %lu\n", __func__, vb, + vb2_plane_vaddr(vb, 0), + vb2_get_plane_payload(vb, 0)); + + list_del_init(&buf->internal.queue); + vb->timestamp = ktime_get_ns(); + vbuf->sequence = pcdev->frame_count; + if (err) + vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); + else + vb2_buffer_done(vb, VB2_BUF_STATE_DONE); + } + + pcdev->frame_count++; + + if (list_empty(&pcdev->capture)) { + if (list_empty(&pcdev->discard)) { + dev_warn(pcdev->dev, "%s: trying to access empty discard list\n", + __func__); + return; + } + + ibuf = list_first_entry(&pcdev->discard, + struct mx2_buf_internal, queue); + ibuf->bufnum = bufnum; + + list_move_tail(pcdev->discard.next, &pcdev->active_bufs); + mx27_update_emma_buf(pcdev, pcdev->discard_buffer_dma, bufnum); + return; + } + + buf = list_first_entry(&pcdev->capture, struct mx2_buffer, + internal.queue); + + buf->internal.bufnum = bufnum; + + list_move_tail(pcdev->capture.next, &pcdev->active_bufs); + + vb = &buf->vb.vb2_buf; + + phys = vb2_dma_contig_plane_dma_addr(vb, 0); + mx27_update_emma_buf(pcdev, phys, bufnum); +} + +static irqreturn_t mx27_camera_emma_irq(int irq_emma, void *data) +{ + struct mx2_camera_dev *pcdev = data; + unsigned int status = readl(pcdev->base_emma + PRP_INTRSTATUS); + struct mx2_buf_internal *ibuf; + + spin_lock(&pcdev->lock); + + if (list_empty(&pcdev->active_bufs)) { + dev_warn(pcdev->dev, "%s: called while active list is empty\n", + __func__); + + if (!status) { + spin_unlock(&pcdev->lock); + return IRQ_NONE; + } + } + + if (status & (1 << 7)) { /* overflow */ + u32 cntl = readl(pcdev->base_emma + PRP_CNTL); + writel(cntl & ~(PRP_CNTL_CH1EN | PRP_CNTL_CH2EN), + pcdev->base_emma + PRP_CNTL); + writel(cntl, pcdev->base_emma + PRP_CNTL); + + ibuf = list_first_entry(&pcdev->active_bufs, + struct mx2_buf_internal, queue); + mx27_camera_frame_done_emma(pcdev, + ibuf->bufnum, true); + + status &= ~(1 << 7); + } else if (((status & (3 << 5)) == (3 << 5)) || + ((status & (3 << 3)) == (3 << 3))) { + /* + * Both buffers have triggered, process the one we're expecting + * to first + */ + ibuf = list_first_entry(&pcdev->active_bufs, + struct mx2_buf_internal, queue); + mx27_camera_frame_done_emma(pcdev, ibuf->bufnum, false); + status &= ~(1 << (6 - ibuf->bufnum)); /* mark processed */ + } else if ((status & (1 << 6)) || (status & (1 << 4))) { + mx27_camera_frame_done_emma(pcdev, 0, false); + } else if ((status & (1 << 5)) || (status & (1 << 3))) { + mx27_camera_frame_done_emma(pcdev, 1, false); + } + + spin_unlock(&pcdev->lock); + writel(status, pcdev->base_emma + PRP_INTRSTATUS); + + return IRQ_HANDLED; +} + +static int mx27_camera_emma_init(struct platform_device *pdev) +{ + struct mx2_camera_dev *pcdev = platform_get_drvdata(pdev); + struct resource *res_emma; + int irq_emma; + int err = 0; + + res_emma = platform_get_resource(pdev, IORESOURCE_MEM, 1); + irq_emma = platform_get_irq(pdev, 1); + if (!res_emma || !irq_emma) { + dev_err(pcdev->dev, "no EMMA resources\n"); + err = -ENODEV; + goto out; + } + + pcdev->base_emma = devm_ioremap_resource(pcdev->dev, res_emma); + if (IS_ERR(pcdev->base_emma)) { + err = PTR_ERR(pcdev->base_emma); + goto out; + } + + err = devm_request_irq(pcdev->dev, irq_emma, mx27_camera_emma_irq, 0, + MX2_CAM_DRV_NAME, pcdev); + if (err) { + dev_err(pcdev->dev, "Camera EMMA interrupt register failed\n"); + goto out; + } + + pcdev->clk_emma_ipg = devm_clk_get(pcdev->dev, "emma-ipg"); + if (IS_ERR(pcdev->clk_emma_ipg)) { + err = PTR_ERR(pcdev->clk_emma_ipg); + goto out; + } + + clk_prepare_enable(pcdev->clk_emma_ipg); + + pcdev->clk_emma_ahb = devm_clk_get(pcdev->dev, "emma-ahb"); + if (IS_ERR(pcdev->clk_emma_ahb)) { + err = PTR_ERR(pcdev->clk_emma_ahb); + goto exit_clk_emma_ipg; + } + + clk_prepare_enable(pcdev->clk_emma_ahb); + + err = mx27_camera_emma_prp_reset(pcdev); + if (err) + goto exit_clk_emma_ahb; + + return err; + +exit_clk_emma_ahb: + clk_disable_unprepare(pcdev->clk_emma_ahb); +exit_clk_emma_ipg: + clk_disable_unprepare(pcdev->clk_emma_ipg); +out: + return err; +} + +static int mx2_camera_probe(struct platform_device *pdev) +{ + struct mx2_camera_dev *pcdev; + struct resource *res_csi; + int irq_csi; + int err = 0; + + dev_dbg(&pdev->dev, "initialising\n"); + + res_csi = platform_get_resource(pdev, IORESOURCE_MEM, 0); + irq_csi = platform_get_irq(pdev, 0); + if (res_csi == NULL || irq_csi < 0) { + dev_err(&pdev->dev, "Missing platform resources data\n"); + err = -ENODEV; + goto exit; + } + + pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL); + if (!pcdev) { + dev_err(&pdev->dev, "Could not allocate pcdev\n"); + err = -ENOMEM; + goto exit; + } + + pcdev->clk_csi_ahb = devm_clk_get(&pdev->dev, "ahb"); + if (IS_ERR(pcdev->clk_csi_ahb)) { + dev_err(&pdev->dev, "Could not get csi ahb clock\n"); + err = PTR_ERR(pcdev->clk_csi_ahb); + goto exit; + } + + pcdev->clk_csi_per = devm_clk_get(&pdev->dev, "per"); + if (IS_ERR(pcdev->clk_csi_per)) { + dev_err(&pdev->dev, "Could not get csi per clock\n"); + err = PTR_ERR(pcdev->clk_csi_per); + goto exit; + } + + pcdev->pdata = pdev->dev.platform_data; + if (pcdev->pdata) { + long rate; + + pcdev->platform_flags = pcdev->pdata->flags; + + rate = clk_round_rate(pcdev->clk_csi_per, + pcdev->pdata->clk * 2); + if (rate <= 0) { + err = -ENODEV; + goto exit; + } + err = clk_set_rate(pcdev->clk_csi_per, rate); + if (err < 0) + goto exit; + } + + INIT_LIST_HEAD(&pcdev->capture); + INIT_LIST_HEAD(&pcdev->active_bufs); + INIT_LIST_HEAD(&pcdev->discard); + spin_lock_init(&pcdev->lock); + + pcdev->base_csi = devm_ioremap_resource(&pdev->dev, res_csi); + if (IS_ERR(pcdev->base_csi)) { + err = PTR_ERR(pcdev->base_csi); + goto exit; + } + + pcdev->dev = &pdev->dev; + platform_set_drvdata(pdev, pcdev); + + err = mx27_camera_emma_init(pdev); + if (err) + goto exit; + + /* + * We're done with drvdata here. Clear the pointer so that + * v4l2 core can start using drvdata on its purpose. + */ + platform_set_drvdata(pdev, NULL); + + pcdev->soc_host.drv_name = MX2_CAM_DRV_NAME, + pcdev->soc_host.ops = &mx2_soc_camera_host_ops, + pcdev->soc_host.priv = pcdev; + pcdev->soc_host.v4l2_dev.dev = &pdev->dev; + pcdev->soc_host.nr = pdev->id; + + pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); + if (IS_ERR(pcdev->alloc_ctx)) { + err = PTR_ERR(pcdev->alloc_ctx); + goto eallocctx; + } + err = soc_camera_host_register(&pcdev->soc_host); + if (err) + goto exit_free_emma; + + dev_info(&pdev->dev, "MX2 Camera (CSI) driver probed, clock frequency: %ld\n", + clk_get_rate(pcdev->clk_csi_per)); + + return 0; + +exit_free_emma: + vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); +eallocctx: + clk_disable_unprepare(pcdev->clk_emma_ipg); + clk_disable_unprepare(pcdev->clk_emma_ahb); +exit: + return err; +} + +static int mx2_camera_remove(struct platform_device *pdev) +{ + struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); + struct mx2_camera_dev *pcdev = container_of(soc_host, + struct mx2_camera_dev, soc_host); + + soc_camera_host_unregister(&pcdev->soc_host); + + vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); + + clk_disable_unprepare(pcdev->clk_emma_ipg); + clk_disable_unprepare(pcdev->clk_emma_ahb); + + dev_info(&pdev->dev, "MX2 Camera driver unloaded\n"); + + return 0; +} + +static struct platform_driver mx2_camera_driver = { + .driver = { + .name = MX2_CAM_DRV_NAME, + }, + .id_table = mx2_camera_devtype, + .remove = mx2_camera_remove, +}; + +module_platform_driver_probe(mx2_camera_driver, mx2_camera_probe); + +MODULE_DESCRIPTION("i.MX27 SoC Camera Host driver"); +MODULE_AUTHOR("Sascha Hauer "); +MODULE_LICENSE("GPL"); +MODULE_VERSION(MX2_CAM_VERSION);