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- // SPDX-License-Identifier: GPL-2.0-or-later
- /*
- * V4L2 Driver for PXA camera host
- *
- * Copyright (C) 2006, Sascha Hauer, Pengutronix
- * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
- * Copyright (C) 2016, Robert Jarzmik <robert.jarzmik@free.fr>
- */
- #include <linux/init.h>
- #include <linux/module.h>
- #include <linux/io.h>
- #include <linux/delay.h>
- #include <linux/device.h>
- #include <linux/dma-mapping.h>
- #include <linux/err.h>
- #include <linux/errno.h>
- #include <linux/fs.h>
- #include <linux/interrupt.h>
- #include <linux/kernel.h>
- #include <linux/mm.h>
- #include <linux/moduleparam.h>
- #include <linux/of.h>
- #include <linux/of_graph.h>
- #include <linux/time.h>
- #include <linux/platform_device.h>
- #include <linux/clk.h>
- #include <linux/sched.h>
- #include <linux/slab.h>
- #include <linux/dmaengine.h>
- #include <linux/dma/pxa-dma.h>
- #include <media/v4l2-async.h>
- #include <media/v4l2-clk.h>
- #include <media/v4l2-common.h>
- #include <media/v4l2-ctrls.h>
- #include <media/v4l2-device.h>
- #include <media/v4l2-event.h>
- #include <media/v4l2-ioctl.h>
- #include <media/v4l2-fwnode.h>
- #include <media/videobuf2-dma-sg.h>
- #include <linux/videodev2.h>
- #include <linux/platform_data/media/camera-pxa.h>
- #define PXA_CAM_VERSION "0.0.6"
- #define PXA_CAM_DRV_NAME "pxa27x-camera"
- #define DEFAULT_WIDTH 640
- #define DEFAULT_HEIGHT 480
- /* Camera Interface */
- #define CICR0 0x0000
- #define CICR1 0x0004
- #define CICR2 0x0008
- #define CICR3 0x000C
- #define CICR4 0x0010
- #define CISR 0x0014
- #define CIFR 0x0018
- #define CITOR 0x001C
- #define CIBR0 0x0028
- #define CIBR1 0x0030
- #define CIBR2 0x0038
- #define CICR0_DMAEN (1UL << 31) /* DMA request enable */
- #define CICR0_PAR_EN (1 << 30) /* Parity enable */
- #define CICR0_SL_CAP_EN (1 << 29) /* Capture enable for slave mode */
- #define CICR0_ENB (1 << 28) /* Camera interface enable */
- #define CICR0_DIS (1 << 27) /* Camera interface disable */
- #define CICR0_SIM (0x7 << 24) /* Sensor interface mode mask */
- #define CICR0_TOM (1 << 9) /* Time-out mask */
- #define CICR0_RDAVM (1 << 8) /* Receive-data-available mask */
- #define CICR0_FEM (1 << 7) /* FIFO-empty mask */
- #define CICR0_EOLM (1 << 6) /* End-of-line mask */
- #define CICR0_PERRM (1 << 5) /* Parity-error mask */
- #define CICR0_QDM (1 << 4) /* Quick-disable mask */
- #define CICR0_CDM (1 << 3) /* Disable-done mask */
- #define CICR0_SOFM (1 << 2) /* Start-of-frame mask */
- #define CICR0_EOFM (1 << 1) /* End-of-frame mask */
- #define CICR0_FOM (1 << 0) /* FIFO-overrun mask */
- #define CICR1_TBIT (1UL << 31) /* Transparency bit */
- #define CICR1_RGBT_CONV (0x3 << 29) /* RGBT conversion mask */
- #define CICR1_PPL (0x7ff << 15) /* Pixels per line mask */
- #define CICR1_RGB_CONV (0x7 << 12) /* RGB conversion mask */
- #define CICR1_RGB_F (1 << 11) /* RGB format */
- #define CICR1_YCBCR_F (1 << 10) /* YCbCr format */
- #define CICR1_RGB_BPP (0x7 << 7) /* RGB bis per pixel mask */
- #define CICR1_RAW_BPP (0x3 << 5) /* Raw bis per pixel mask */
- #define CICR1_COLOR_SP (0x3 << 3) /* Color space mask */
- #define CICR1_DW (0x7 << 0) /* Data width mask */
- #define CICR2_BLW (0xff << 24) /* Beginning-of-line pixel clock
- wait count mask */
- #define CICR2_ELW (0xff << 16) /* End-of-line pixel clock
- wait count mask */
- #define CICR2_HSW (0x3f << 10) /* Horizontal sync pulse width mask */
- #define CICR2_BFPW (0x3f << 3) /* Beginning-of-frame pixel clock
- wait count mask */
- #define CICR2_FSW (0x7 << 0) /* Frame stabilization
- wait count mask */
- #define CICR3_BFW (0xff << 24) /* Beginning-of-frame line clock
- wait count mask */
- #define CICR3_EFW (0xff << 16) /* End-of-frame line clock
- wait count mask */
- #define CICR3_VSW (0x3f << 10) /* Vertical sync pulse width mask */
- #define CICR3_BFPW (0x3f << 3) /* Beginning-of-frame pixel clock
- wait count mask */
- #define CICR3_LPF (0x7ff << 0) /* Lines per frame mask */
- #define CICR4_MCLK_DLY (0x3 << 24) /* MCLK Data Capture Delay mask */
- #define CICR4_PCLK_EN (1 << 23) /* Pixel clock enable */
- #define CICR4_PCP (1 << 22) /* Pixel clock polarity */
- #define CICR4_HSP (1 << 21) /* Horizontal sync polarity */
- #define CICR4_VSP (1 << 20) /* Vertical sync polarity */
- #define CICR4_MCLK_EN (1 << 19) /* MCLK enable */
- #define CICR4_FR_RATE (0x7 << 8) /* Frame rate mask */
- #define CICR4_DIV (0xff << 0) /* Clock divisor mask */
- #define CISR_FTO (1 << 15) /* FIFO time-out */
- #define CISR_RDAV_2 (1 << 14) /* Channel 2 receive data available */
- #define CISR_RDAV_1 (1 << 13) /* Channel 1 receive data available */
- #define CISR_RDAV_0 (1 << 12) /* Channel 0 receive data available */
- #define CISR_FEMPTY_2 (1 << 11) /* Channel 2 FIFO empty */
- #define CISR_FEMPTY_1 (1 << 10) /* Channel 1 FIFO empty */
- #define CISR_FEMPTY_0 (1 << 9) /* Channel 0 FIFO empty */
- #define CISR_EOL (1 << 8) /* End of line */
- #define CISR_PAR_ERR (1 << 7) /* Parity error */
- #define CISR_CQD (1 << 6) /* Camera interface quick disable */
- #define CISR_CDD (1 << 5) /* Camera interface disable done */
- #define CISR_SOF (1 << 4) /* Start of frame */
- #define CISR_EOF (1 << 3) /* End of frame */
- #define CISR_IFO_2 (1 << 2) /* FIFO overrun for Channel 2 */
- #define CISR_IFO_1 (1 << 1) /* FIFO overrun for Channel 1 */
- #define CISR_IFO_0 (1 << 0) /* FIFO overrun for Channel 0 */
- #define CIFR_FLVL2 (0x7f << 23) /* FIFO 2 level mask */
- #define CIFR_FLVL1 (0x7f << 16) /* FIFO 1 level mask */
- #define CIFR_FLVL0 (0xff << 8) /* FIFO 0 level mask */
- #define CIFR_THL_0 (0x3 << 4) /* Threshold Level for Channel 0 FIFO */
- #define CIFR_RESET_F (1 << 3) /* Reset input FIFOs */
- #define CIFR_FEN2 (1 << 2) /* FIFO enable for channel 2 */
- #define CIFR_FEN1 (1 << 1) /* FIFO enable for channel 1 */
- #define CIFR_FEN0 (1 << 0) /* FIFO enable for channel 0 */
- #define CICR0_SIM_MP (0 << 24)
- #define CICR0_SIM_SP (1 << 24)
- #define CICR0_SIM_MS (2 << 24)
- #define CICR0_SIM_EP (3 << 24)
- #define CICR0_SIM_ES (4 << 24)
- #define CICR1_DW_VAL(x) ((x) & CICR1_DW) /* Data bus width */
- #define CICR1_PPL_VAL(x) (((x) << 15) & CICR1_PPL) /* Pixels per line */
- #define CICR1_COLOR_SP_VAL(x) (((x) << 3) & CICR1_COLOR_SP) /* color space */
- #define CICR1_RGB_BPP_VAL(x) (((x) << 7) & CICR1_RGB_BPP) /* bpp for rgb */
- #define CICR1_RGBT_CONV_VAL(x) (((x) << 29) & CICR1_RGBT_CONV) /* rgbt conv */
- #define CICR2_BLW_VAL(x) (((x) << 24) & CICR2_BLW) /* Beginning-of-line pixel clock wait count */
- #define CICR2_ELW_VAL(x) (((x) << 16) & CICR2_ELW) /* End-of-line pixel clock wait count */
- #define CICR2_HSW_VAL(x) (((x) << 10) & CICR2_HSW) /* Horizontal sync pulse width */
- #define CICR2_BFPW_VAL(x) (((x) << 3) & CICR2_BFPW) /* Beginning-of-frame pixel clock wait count */
- #define CICR2_FSW_VAL(x) (((x) << 0) & CICR2_FSW) /* Frame stabilization wait count */
- #define CICR3_BFW_VAL(x) (((x) << 24) & CICR3_BFW) /* Beginning-of-frame line clock wait count */
- #define CICR3_EFW_VAL(x) (((x) << 16) & CICR3_EFW) /* End-of-frame line clock wait count */
- #define CICR3_VSW_VAL(x) (((x) << 11) & CICR3_VSW) /* Vertical sync pulse width */
- #define CICR3_LPF_VAL(x) (((x) << 0) & CICR3_LPF) /* Lines per frame */
- #define CICR0_IRQ_MASK (CICR0_TOM | CICR0_RDAVM | CICR0_FEM | CICR0_EOLM | \
- CICR0_PERRM | CICR0_QDM | CICR0_CDM | CICR0_SOFM | \
- CICR0_EOFM | CICR0_FOM)
- #define sensor_call(cam, o, f, args...) \
- v4l2_subdev_call(cam->sensor, o, f, ##args)
- /*
- * Format handling
- */
- /**
- * enum pxa_mbus_packing - data packing types on the media-bus
- * @PXA_MBUS_PACKING_NONE: no packing, bit-for-bit transfer to RAM, one
- * sample represents one pixel
- * @PXA_MBUS_PACKING_2X8_PADHI: 16 bits transferred in 2 8-bit samples, in the
- * possibly incomplete byte high bits are padding
- * @PXA_MBUS_PACKING_EXTEND16: sample width (e.g., 10 bits) has to be extended
- * to 16 bits
- */
- enum pxa_mbus_packing {
- PXA_MBUS_PACKING_NONE,
- PXA_MBUS_PACKING_2X8_PADHI,
- PXA_MBUS_PACKING_EXTEND16,
- };
- /**
- * enum pxa_mbus_order - sample order on the media bus
- * @PXA_MBUS_ORDER_LE: least significant sample first
- * @PXA_MBUS_ORDER_BE: most significant sample first
- */
- enum pxa_mbus_order {
- PXA_MBUS_ORDER_LE,
- PXA_MBUS_ORDER_BE,
- };
- /**
- * enum pxa_mbus_layout - planes layout in memory
- * @PXA_MBUS_LAYOUT_PACKED: color components packed
- * @PXA_MBUS_LAYOUT_PLANAR_2Y_U_V: YUV components stored in 3 planes (4:2:2)
- * @PXA_MBUS_LAYOUT_PLANAR_2Y_C: YUV components stored in a luma and a
- * chroma plane (C plane is half the size
- * of Y plane)
- * @PXA_MBUS_LAYOUT_PLANAR_Y_C: YUV components stored in a luma and a
- * chroma plane (C plane is the same size
- * as Y plane)
- */
- enum pxa_mbus_layout {
- PXA_MBUS_LAYOUT_PACKED = 0,
- PXA_MBUS_LAYOUT_PLANAR_2Y_U_V,
- PXA_MBUS_LAYOUT_PLANAR_2Y_C,
- PXA_MBUS_LAYOUT_PLANAR_Y_C,
- };
- /**
- * struct pxa_mbus_pixelfmt - Data format on the media bus
- * @name: Name of the format
- * @fourcc: Fourcc code, that will be obtained if the data is
- * stored in memory in the following way:
- * @packing: Type of sample-packing, that has to be used
- * @order: Sample order when storing in memory
- * @layout: Planes layout in memory
- * @bits_per_sample: How many bits the bridge has to sample
- */
- struct pxa_mbus_pixelfmt {
- const char *name;
- u32 fourcc;
- enum pxa_mbus_packing packing;
- enum pxa_mbus_order order;
- enum pxa_mbus_layout layout;
- u8 bits_per_sample;
- };
- /**
- * struct pxa_mbus_lookup - Lookup FOURCC IDs by mediabus codes for pass-through
- * @code: mediabus pixel-code
- * @fmt: pixel format description
- */
- struct pxa_mbus_lookup {
- u32 code;
- struct pxa_mbus_pixelfmt fmt;
- };
- static const struct pxa_mbus_lookup mbus_fmt[] = {
- {
- .code = MEDIA_BUS_FMT_YUYV8_2X8,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_YUYV,
- .name = "YUYV",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_YVYU8_2X8,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_YVYU,
- .name = "YVYU",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_UYVY8_2X8,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_UYVY,
- .name = "UYVY",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_VYUY8_2X8,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_VYUY,
- .name = "VYUY",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_RGB555,
- .name = "RGB555",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_RGB555X,
- .name = "RGB555X",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_BE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_RGB565,
- .name = "RGB565",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_RGB565X,
- .name = "RGB565X",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_BE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SBGGR8_1X8,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SBGGR8,
- .name = "Bayer 8 BGGR",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_NONE,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SGBRG8_1X8,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SGBRG8,
- .name = "Bayer 8 GBRG",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_NONE,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SGRBG8_1X8,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SGRBG8,
- .name = "Bayer 8 GRBG",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_NONE,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SRGGB8_1X8,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SRGGB8,
- .name = "Bayer 8 RGGB",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_NONE,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SBGGR10_1X10,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SBGGR10,
- .name = "Bayer 10 BGGR",
- .bits_per_sample = 10,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_Y8_1X8,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_GREY,
- .name = "Grey",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_NONE,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_Y10_1X10,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_Y10,
- .name = "Grey 10bit",
- .bits_per_sample = 10,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SBGGR10,
- .name = "Bayer 10 BGGR",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SBGGR10,
- .name = "Bayer 10 BGGR",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_BE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_RGB444_2X8_PADHI_BE,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_RGB444,
- .name = "RGB444",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_BE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_UYVY8_1X16,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_UYVY,
- .name = "UYVY 16bit",
- .bits_per_sample = 16,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_VYUY8_1X16,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_VYUY,
- .name = "VYUY 16bit",
- .bits_per_sample = 16,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_YUYV8_1X16,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_YUYV,
- .name = "YUYV 16bit",
- .bits_per_sample = 16,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_YVYU8_1X16,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_YVYU,
- .name = "YVYU 16bit",
- .bits_per_sample = 16,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SGRBG10_DPCM8_1X8,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SGRBG10DPCM8,
- .name = "Bayer 10 BGGR DPCM 8",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_NONE,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SGBRG10_1X10,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SGBRG10,
- .name = "Bayer 10 GBRG",
- .bits_per_sample = 10,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SGRBG10_1X10,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SGRBG10,
- .name = "Bayer 10 GRBG",
- .bits_per_sample = 10,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SRGGB10_1X10,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SRGGB10,
- .name = "Bayer 10 RGGB",
- .bits_per_sample = 10,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SBGGR12_1X12,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SBGGR12,
- .name = "Bayer 12 BGGR",
- .bits_per_sample = 12,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SGBRG12_1X12,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SGBRG12,
- .name = "Bayer 12 GBRG",
- .bits_per_sample = 12,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SGRBG12_1X12,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SGRBG12,
- .name = "Bayer 12 GRBG",
- .bits_per_sample = 12,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- }, {
- .code = MEDIA_BUS_FMT_SRGGB12_1X12,
- .fmt = {
- .fourcc = V4L2_PIX_FMT_SRGGB12,
- .name = "Bayer 12 RGGB",
- .bits_per_sample = 12,
- .packing = PXA_MBUS_PACKING_EXTEND16,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PACKED,
- },
- },
- };
- static s32 pxa_mbus_bytes_per_line(u32 width, const struct pxa_mbus_pixelfmt *mf)
- {
- if (mf->layout != PXA_MBUS_LAYOUT_PACKED)
- return width * mf->bits_per_sample / 8;
- switch (mf->packing) {
- case PXA_MBUS_PACKING_NONE:
- return width * mf->bits_per_sample / 8;
- case PXA_MBUS_PACKING_2X8_PADHI:
- case PXA_MBUS_PACKING_EXTEND16:
- return width * 2;
- }
- return -EINVAL;
- }
- static s32 pxa_mbus_image_size(const struct pxa_mbus_pixelfmt *mf,
- u32 bytes_per_line, u32 height)
- {
- if (mf->layout == PXA_MBUS_LAYOUT_PACKED)
- return bytes_per_line * height;
- switch (mf->packing) {
- case PXA_MBUS_PACKING_2X8_PADHI:
- return bytes_per_line * height * 2;
- default:
- return -EINVAL;
- }
- }
- static const struct pxa_mbus_pixelfmt *pxa_mbus_find_fmtdesc(
- u32 code,
- const struct pxa_mbus_lookup *lookup,
- int n)
- {
- int i;
- for (i = 0; i < n; i++)
- if (lookup[i].code == code)
- return &lookup[i].fmt;
- return NULL;
- }
- static const struct pxa_mbus_pixelfmt *pxa_mbus_get_fmtdesc(
- u32 code)
- {
- return pxa_mbus_find_fmtdesc(code, mbus_fmt, ARRAY_SIZE(mbus_fmt));
- }
- static unsigned int pxa_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
- unsigned int flags)
- {
- unsigned long common_flags;
- bool hsync = true, vsync = true, pclk, data, mode;
- bool mipi_lanes, mipi_clock;
- common_flags = cfg->flags & flags;
- switch (cfg->type) {
- case V4L2_MBUS_PARALLEL:
- hsync = common_flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH |
- V4L2_MBUS_HSYNC_ACTIVE_LOW);
- vsync = common_flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH |
- V4L2_MBUS_VSYNC_ACTIVE_LOW);
- /* fall through */
- case V4L2_MBUS_BT656:
- pclk = common_flags & (V4L2_MBUS_PCLK_SAMPLE_RISING |
- V4L2_MBUS_PCLK_SAMPLE_FALLING);
- data = common_flags & (V4L2_MBUS_DATA_ACTIVE_HIGH |
- V4L2_MBUS_DATA_ACTIVE_LOW);
- mode = common_flags & (V4L2_MBUS_MASTER | V4L2_MBUS_SLAVE);
- return (!hsync || !vsync || !pclk || !data || !mode) ?
- 0 : common_flags;
- case V4L2_MBUS_CSI2_DPHY:
- mipi_lanes = common_flags & V4L2_MBUS_CSI2_LANES;
- mipi_clock = common_flags & (V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK |
- V4L2_MBUS_CSI2_CONTINUOUS_CLOCK);
- return (!mipi_lanes || !mipi_clock) ? 0 : common_flags;
- default:
- WARN_ON(1);
- return -EINVAL;
- }
- return 0;
- }
- /**
- * struct pxa_camera_format_xlate - match between host and sensor formats
- * @code: code of a sensor provided format
- * @host_fmt: host format after host translation from code
- *
- * Host and sensor translation structure. Used in table of host and sensor
- * formats matchings in pxa_camera_device. A host can override the generic list
- * generation by implementing get_formats(), and use it for format checks and
- * format setup.
- */
- struct pxa_camera_format_xlate {
- u32 code;
- const struct pxa_mbus_pixelfmt *host_fmt;
- };
- /*
- * Structures
- */
- enum pxa_camera_active_dma {
- DMA_Y = 0x1,
- DMA_U = 0x2,
- DMA_V = 0x4,
- };
- /* buffer for one video frame */
- struct pxa_buffer {
- /* common v4l buffer stuff -- must be first */
- struct vb2_v4l2_buffer vbuf;
- struct list_head queue;
- u32 code;
- int nb_planes;
- /* our descriptor lists for Y, U and V channels */
- struct dma_async_tx_descriptor *descs[3];
- dma_cookie_t cookie[3];
- struct scatterlist *sg[3];
- int sg_len[3];
- size_t plane_sizes[3];
- int inwork;
- enum pxa_camera_active_dma active_dma;
- };
- struct pxa_camera_dev {
- struct v4l2_device v4l2_dev;
- struct video_device vdev;
- struct v4l2_async_notifier notifier;
- struct vb2_queue vb2_vq;
- struct v4l2_subdev *sensor;
- struct pxa_camera_format_xlate *user_formats;
- const struct pxa_camera_format_xlate *current_fmt;
- struct v4l2_pix_format current_pix;
- struct v4l2_async_subdev asd;
- /*
- * PXA27x is only supposed to handle one camera on its Quick Capture
- * interface. If anyone ever builds hardware to enable more than
- * one camera, they will have to modify this driver too
- */
- struct clk *clk;
- unsigned int irq;
- void __iomem *base;
- int channels;
- struct dma_chan *dma_chans[3];
- struct pxacamera_platform_data *pdata;
- struct resource *res;
- unsigned long platform_flags;
- unsigned long ciclk;
- unsigned long mclk;
- u32 mclk_divisor;
- struct v4l2_clk *mclk_clk;
- u16 width_flags; /* max 10 bits */
- struct list_head capture;
- spinlock_t lock;
- struct mutex mlock;
- unsigned int buf_sequence;
- struct pxa_buffer *active;
- struct tasklet_struct task_eof;
- u32 save_cicr[5];
- };
- struct pxa_cam {
- unsigned long flags;
- };
- static const char *pxa_cam_driver_description = "PXA_Camera";
- /*
- * Format translation functions
- */
- static const struct pxa_camera_format_xlate
- *pxa_mbus_xlate_by_fourcc(struct pxa_camera_format_xlate *user_formats,
- unsigned int fourcc)
- {
- unsigned int i;
- for (i = 0; user_formats[i].code; i++)
- if (user_formats[i].host_fmt->fourcc == fourcc)
- return user_formats + i;
- return NULL;
- }
- static struct pxa_camera_format_xlate *pxa_mbus_build_fmts_xlate(
- struct v4l2_device *v4l2_dev, struct v4l2_subdev *subdev,
- int (*get_formats)(struct v4l2_device *, unsigned int,
- struct pxa_camera_format_xlate *xlate))
- {
- unsigned int i, fmts = 0, raw_fmts = 0;
- int ret;
- struct v4l2_subdev_mbus_code_enum code = {
- .which = V4L2_SUBDEV_FORMAT_ACTIVE,
- };
- struct pxa_camera_format_xlate *user_formats;
- while (!v4l2_subdev_call(subdev, pad, enum_mbus_code, NULL, &code)) {
- raw_fmts++;
- code.index++;
- }
- /*
- * First pass - only count formats this host-sensor
- * configuration can provide
- */
- for (i = 0; i < raw_fmts; i++) {
- ret = get_formats(v4l2_dev, i, NULL);
- if (ret < 0)
- return ERR_PTR(ret);
- fmts += ret;
- }
- if (!fmts)
- return ERR_PTR(-ENXIO);
- user_formats = kcalloc(fmts + 1, sizeof(*user_formats), GFP_KERNEL);
- if (!user_formats)
- return ERR_PTR(-ENOMEM);
- /* Second pass - actually fill data formats */
- fmts = 0;
- for (i = 0; i < raw_fmts; i++) {
- ret = get_formats(v4l2_dev, i, user_formats + fmts);
- if (ret < 0)
- goto egfmt;
- fmts += ret;
- }
- user_formats[fmts].code = 0;
- return user_formats;
- egfmt:
- kfree(user_formats);
- return ERR_PTR(ret);
- }
- /*
- * Videobuf operations
- */
- static struct pxa_buffer *vb2_to_pxa_buffer(struct vb2_buffer *vb)
- {
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- return container_of(vbuf, struct pxa_buffer, vbuf);
- }
- static struct device *pcdev_to_dev(struct pxa_camera_dev *pcdev)
- {
- return pcdev->v4l2_dev.dev;
- }
- static struct pxa_camera_dev *v4l2_dev_to_pcdev(struct v4l2_device *v4l2_dev)
- {
- return container_of(v4l2_dev, struct pxa_camera_dev, v4l2_dev);
- }
- static void pxa_camera_dma_irq(struct pxa_camera_dev *pcdev,
- enum pxa_camera_active_dma act_dma);
- static void pxa_camera_dma_irq_y(void *data)
- {
- struct pxa_camera_dev *pcdev = data;
- pxa_camera_dma_irq(pcdev, DMA_Y);
- }
- static void pxa_camera_dma_irq_u(void *data)
- {
- struct pxa_camera_dev *pcdev = data;
- pxa_camera_dma_irq(pcdev, DMA_U);
- }
- static void pxa_camera_dma_irq_v(void *data)
- {
- struct pxa_camera_dev *pcdev = data;
- pxa_camera_dma_irq(pcdev, DMA_V);
- }
- /**
- * pxa_init_dma_channel - init dma descriptors
- * @pcdev: pxa camera device
- * @buf: pxa camera buffer
- * @channel: dma channel (0 => 'Y', 1 => 'U', 2 => 'V')
- * @sg: dma scatter list
- * @sglen: dma scatter list length
- *
- * Prepares the pxa dma descriptors to transfer one camera channel.
- *
- * Returns 0 if success or -ENOMEM if no memory is available
- */
- static int pxa_init_dma_channel(struct pxa_camera_dev *pcdev,
- struct pxa_buffer *buf, int channel,
- struct scatterlist *sg, int sglen)
- {
- struct dma_chan *dma_chan = pcdev->dma_chans[channel];
- struct dma_async_tx_descriptor *tx;
- tx = dmaengine_prep_slave_sg(dma_chan, sg, sglen, DMA_DEV_TO_MEM,
- DMA_PREP_INTERRUPT | DMA_CTRL_REUSE);
- if (!tx) {
- dev_err(pcdev_to_dev(pcdev),
- "dmaengine_prep_slave_sg failed\n");
- goto fail;
- }
- tx->callback_param = pcdev;
- switch (channel) {
- case 0:
- tx->callback = pxa_camera_dma_irq_y;
- break;
- case 1:
- tx->callback = pxa_camera_dma_irq_u;
- break;
- case 2:
- tx->callback = pxa_camera_dma_irq_v;
- break;
- }
- buf->descs[channel] = tx;
- return 0;
- fail:
- dev_dbg(pcdev_to_dev(pcdev),
- "%s (vb=%p) dma_tx=%p\n",
- __func__, buf, tx);
- return -ENOMEM;
- }
- static void pxa_videobuf_set_actdma(struct pxa_camera_dev *pcdev,
- struct pxa_buffer *buf)
- {
- buf->active_dma = DMA_Y;
- if (buf->nb_planes == 3)
- buf->active_dma |= DMA_U | DMA_V;
- }
- /**
- * pxa_dma_start_channels - start DMA channel for active buffer
- * @pcdev: pxa camera device
- *
- * Initialize DMA channels to the beginning of the active video buffer, and
- * start these channels.
- */
- static void pxa_dma_start_channels(struct pxa_camera_dev *pcdev)
- {
- int i;
- for (i = 0; i < pcdev->channels; i++) {
- dev_dbg(pcdev_to_dev(pcdev),
- "%s (channel=%d)\n", __func__, i);
- dma_async_issue_pending(pcdev->dma_chans[i]);
- }
- }
- static void pxa_dma_stop_channels(struct pxa_camera_dev *pcdev)
- {
- int i;
- for (i = 0; i < pcdev->channels; i++) {
- dev_dbg(pcdev_to_dev(pcdev),
- "%s (channel=%d)\n", __func__, i);
- dmaengine_terminate_all(pcdev->dma_chans[i]);
- }
- }
- static void pxa_dma_add_tail_buf(struct pxa_camera_dev *pcdev,
- struct pxa_buffer *buf)
- {
- int i;
- for (i = 0; i < pcdev->channels; i++) {
- buf->cookie[i] = dmaengine_submit(buf->descs[i]);
- dev_dbg(pcdev_to_dev(pcdev),
- "%s (channel=%d) : submit vb=%p cookie=%d\n",
- __func__, i, buf, buf->descs[i]->cookie);
- }
- }
- /**
- * pxa_camera_start_capture - start video capturing
- * @pcdev: camera device
- *
- * Launch capturing. DMA channels should not be active yet. They should get
- * activated at the end of frame interrupt, to capture only whole frames, and
- * never begin the capture of a partial frame.
- */
- static void pxa_camera_start_capture(struct pxa_camera_dev *pcdev)
- {
- unsigned long cicr0;
- dev_dbg(pcdev_to_dev(pcdev), "%s\n", __func__);
- __raw_writel(__raw_readl(pcdev->base + CISR), pcdev->base + CISR);
- /* Enable End-Of-Frame Interrupt */
- cicr0 = __raw_readl(pcdev->base + CICR0) | CICR0_ENB;
- cicr0 &= ~CICR0_EOFM;
- __raw_writel(cicr0, pcdev->base + CICR0);
- }
- static void pxa_camera_stop_capture(struct pxa_camera_dev *pcdev)
- {
- unsigned long cicr0;
- pxa_dma_stop_channels(pcdev);
- cicr0 = __raw_readl(pcdev->base + CICR0) & ~CICR0_ENB;
- __raw_writel(cicr0, pcdev->base + CICR0);
- pcdev->active = NULL;
- dev_dbg(pcdev_to_dev(pcdev), "%s\n", __func__);
- }
- static void pxa_camera_wakeup(struct pxa_camera_dev *pcdev,
- struct pxa_buffer *buf,
- enum vb2_buffer_state state)
- {
- struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
- /* _init is used to debug races, see comment in pxa_camera_reqbufs() */
- list_del_init(&buf->queue);
- vb->timestamp = ktime_get_ns();
- vbuf->sequence = pcdev->buf_sequence++;
- vbuf->field = V4L2_FIELD_NONE;
- vb2_buffer_done(vb, VB2_BUF_STATE_DONE);
- dev_dbg(pcdev_to_dev(pcdev), "%s dequeued buffer (buf=0x%p)\n",
- __func__, buf);
- if (list_empty(&pcdev->capture)) {
- pxa_camera_stop_capture(pcdev);
- return;
- }
- pcdev->active = list_entry(pcdev->capture.next,
- struct pxa_buffer, queue);
- }
- /**
- * pxa_camera_check_link_miss - check missed DMA linking
- * @pcdev: camera device
- * @last_submitted: an opaque DMA cookie for last submitted
- * @last_issued: an opaque DMA cookie for last issued
- *
- * The DMA chaining is done with DMA running. This means a tiny temporal window
- * remains, where a buffer is queued on the chain, while the chain is already
- * stopped. This means the tailed buffer would never be transferred by DMA.
- * This function restarts the capture for this corner case, where :
- * - DADR() == DADDR_STOP
- * - a videobuffer is queued on the pcdev->capture list
- *
- * Please check the "DMA hot chaining timeslice issue" in
- * Documentation/media/v4l-drivers/pxa_camera.rst
- *
- * Context: should only be called within the dma irq handler
- */
- static void pxa_camera_check_link_miss(struct pxa_camera_dev *pcdev,
- dma_cookie_t last_submitted,
- dma_cookie_t last_issued)
- {
- bool is_dma_stopped = last_submitted != last_issued;
- dev_dbg(pcdev_to_dev(pcdev),
- "%s : top queued buffer=%p, is_dma_stopped=%d\n",
- __func__, pcdev->active, is_dma_stopped);
- if (pcdev->active && is_dma_stopped)
- pxa_camera_start_capture(pcdev);
- }
- static void pxa_camera_dma_irq(struct pxa_camera_dev *pcdev,
- enum pxa_camera_active_dma act_dma)
- {
- struct pxa_buffer *buf, *last_buf;
- unsigned long flags;
- u32 camera_status, overrun;
- int chan;
- enum dma_status last_status;
- dma_cookie_t last_issued;
- spin_lock_irqsave(&pcdev->lock, flags);
- camera_status = __raw_readl(pcdev->base + CISR);
- dev_dbg(pcdev_to_dev(pcdev), "camera dma irq, cisr=0x%x dma=%d\n",
- camera_status, act_dma);
- overrun = CISR_IFO_0;
- if (pcdev->channels == 3)
- overrun |= CISR_IFO_1 | CISR_IFO_2;
- /*
- * pcdev->active should not be NULL in DMA irq handler.
- *
- * But there is one corner case : if capture was stopped due to an
- * overrun of channel 1, and at that same channel 2 was completed.
- *
- * When handling the overrun in DMA irq for channel 1, we'll stop the
- * capture and restart it (and thus set pcdev->active to NULL). But the
- * DMA irq handler will already be pending for channel 2. So on entering
- * the DMA irq handler for channel 2 there will be no active buffer, yet
- * that is normal.
- */
- if (!pcdev->active)
- goto out;
- buf = pcdev->active;
- WARN_ON(buf->inwork || list_empty(&buf->queue));
- /*
- * It's normal if the last frame creates an overrun, as there
- * are no more DMA descriptors to fetch from QCI fifos
- */
- switch (act_dma) {
- case DMA_U:
- chan = 1;
- break;
- case DMA_V:
- chan = 2;
- break;
- default:
- chan = 0;
- break;
- }
- last_buf = list_entry(pcdev->capture.prev,
- struct pxa_buffer, queue);
- last_status = dma_async_is_tx_complete(pcdev->dma_chans[chan],
- last_buf->cookie[chan],
- NULL, &last_issued);
- if (camera_status & overrun &&
- last_status != DMA_COMPLETE) {
- dev_dbg(pcdev_to_dev(pcdev), "FIFO overrun! CISR: %x\n",
- camera_status);
- pxa_camera_stop_capture(pcdev);
- list_for_each_entry(buf, &pcdev->capture, queue)
- pxa_dma_add_tail_buf(pcdev, buf);
- pxa_camera_start_capture(pcdev);
- goto out;
- }
- buf->active_dma &= ~act_dma;
- if (!buf->active_dma) {
- pxa_camera_wakeup(pcdev, buf, VB2_BUF_STATE_DONE);
- pxa_camera_check_link_miss(pcdev, last_buf->cookie[chan],
- last_issued);
- }
- out:
- spin_unlock_irqrestore(&pcdev->lock, flags);
- }
- static u32 mclk_get_divisor(struct platform_device *pdev,
- struct pxa_camera_dev *pcdev)
- {
- unsigned long mclk = pcdev->mclk;
- u32 div;
- unsigned long lcdclk;
- lcdclk = clk_get_rate(pcdev->clk);
- pcdev->ciclk = lcdclk;
- /* mclk <= ciclk / 4 (27.4.2) */
- if (mclk > lcdclk / 4) {
- mclk = lcdclk / 4;
- dev_warn(&pdev->dev,
- "Limiting master clock to %lu\n", mclk);
- }
- /* We verify mclk != 0, so if anyone breaks it, here comes their Oops */
- div = (lcdclk + 2 * mclk - 1) / (2 * mclk) - 1;
- /* If we're not supplying MCLK, leave it at 0 */
- if (pcdev->platform_flags & PXA_CAMERA_MCLK_EN)
- pcdev->mclk = lcdclk / (2 * (div + 1));
- dev_dbg(&pdev->dev, "LCD clock %luHz, target freq %luHz, divisor %u\n",
- lcdclk, mclk, div);
- return div;
- }
- static void recalculate_fifo_timeout(struct pxa_camera_dev *pcdev,
- unsigned long pclk)
- {
- /* We want a timeout > 1 pixel time, not ">=" */
- u32 ciclk_per_pixel = pcdev->ciclk / pclk + 1;
- __raw_writel(ciclk_per_pixel, pcdev->base + CITOR);
- }
- static void pxa_camera_activate(struct pxa_camera_dev *pcdev)
- {
- u32 cicr4 = 0;
- /* disable all interrupts */
- __raw_writel(0x3ff, pcdev->base + CICR0);
- if (pcdev->platform_flags & PXA_CAMERA_PCLK_EN)
- cicr4 |= CICR4_PCLK_EN;
- if (pcdev->platform_flags & PXA_CAMERA_MCLK_EN)
- cicr4 |= CICR4_MCLK_EN;
- if (pcdev->platform_flags & PXA_CAMERA_PCP)
- cicr4 |= CICR4_PCP;
- if (pcdev->platform_flags & PXA_CAMERA_HSP)
- cicr4 |= CICR4_HSP;
- if (pcdev->platform_flags & PXA_CAMERA_VSP)
- cicr4 |= CICR4_VSP;
- __raw_writel(pcdev->mclk_divisor | cicr4, pcdev->base + CICR4);
- if (pcdev->platform_flags & PXA_CAMERA_MCLK_EN)
- /* Initialise the timeout under the assumption pclk = mclk */
- recalculate_fifo_timeout(pcdev, pcdev->mclk);
- else
- /* "Safe default" - 13MHz */
- recalculate_fifo_timeout(pcdev, 13000000);
- clk_prepare_enable(pcdev->clk);
- }
- static void pxa_camera_deactivate(struct pxa_camera_dev *pcdev)
- {
- clk_disable_unprepare(pcdev->clk);
- }
- static void pxa_camera_eof(unsigned long arg)
- {
- struct pxa_camera_dev *pcdev = (struct pxa_camera_dev *)arg;
- unsigned long cifr;
- struct pxa_buffer *buf;
- dev_dbg(pcdev_to_dev(pcdev),
- "Camera interrupt status 0x%x\n",
- __raw_readl(pcdev->base + CISR));
- /* Reset the FIFOs */
- cifr = __raw_readl(pcdev->base + CIFR) | CIFR_RESET_F;
- __raw_writel(cifr, pcdev->base + CIFR);
- pcdev->active = list_first_entry(&pcdev->capture,
- struct pxa_buffer, queue);
- buf = pcdev->active;
- pxa_videobuf_set_actdma(pcdev, buf);
- pxa_dma_start_channels(pcdev);
- }
- static irqreturn_t pxa_camera_irq(int irq, void *data)
- {
- struct pxa_camera_dev *pcdev = data;
- unsigned long status, cicr0;
- status = __raw_readl(pcdev->base + CISR);
- dev_dbg(pcdev_to_dev(pcdev),
- "Camera interrupt status 0x%lx\n", status);
- if (!status)
- return IRQ_NONE;
- __raw_writel(status, pcdev->base + CISR);
- if (status & CISR_EOF) {
- cicr0 = __raw_readl(pcdev->base + CICR0) | CICR0_EOFM;
- __raw_writel(cicr0, pcdev->base + CICR0);
- tasklet_schedule(&pcdev->task_eof);
- }
- return IRQ_HANDLED;
- }
- static int test_platform_param(struct pxa_camera_dev *pcdev,
- unsigned char buswidth, unsigned long *flags)
- {
- /*
- * Platform specified synchronization and pixel clock polarities are
- * only a recommendation and are only used during probing. The PXA270
- * quick capture interface supports both.
- */
- *flags = (pcdev->platform_flags & PXA_CAMERA_MASTER ?
- V4L2_MBUS_MASTER : V4L2_MBUS_SLAVE) |
- V4L2_MBUS_HSYNC_ACTIVE_HIGH |
- V4L2_MBUS_HSYNC_ACTIVE_LOW |
- V4L2_MBUS_VSYNC_ACTIVE_HIGH |
- V4L2_MBUS_VSYNC_ACTIVE_LOW |
- V4L2_MBUS_DATA_ACTIVE_HIGH |
- V4L2_MBUS_PCLK_SAMPLE_RISING |
- V4L2_MBUS_PCLK_SAMPLE_FALLING;
- /* If requested data width is supported by the platform, use it */
- if ((1 << (buswidth - 1)) & pcdev->width_flags)
- return 0;
- return -EINVAL;
- }
- static void pxa_camera_setup_cicr(struct pxa_camera_dev *pcdev,
- unsigned long flags, __u32 pixfmt)
- {
- unsigned long dw, bpp;
- u32 cicr0, cicr1, cicr2, cicr3, cicr4 = 0, y_skip_top;
- int ret = sensor_call(pcdev, sensor, g_skip_top_lines, &y_skip_top);
- if (ret < 0)
- y_skip_top = 0;
- /*
- * Datawidth is now guaranteed to be equal to one of the three values.
- * We fix bit-per-pixel equal to data-width...
- */
- switch (pcdev->current_fmt->host_fmt->bits_per_sample) {
- case 10:
- dw = 4;
- bpp = 0x40;
- break;
- case 9:
- dw = 3;
- bpp = 0x20;
- break;
- default:
- /*
- * Actually it can only be 8 now,
- * default is just to silence compiler warnings
- */
- case 8:
- dw = 2;
- bpp = 0;
- }
- if (pcdev->platform_flags & PXA_CAMERA_PCLK_EN)
- cicr4 |= CICR4_PCLK_EN;
- if (pcdev->platform_flags & PXA_CAMERA_MCLK_EN)
- cicr4 |= CICR4_MCLK_EN;
- if (flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
- cicr4 |= CICR4_PCP;
- if (flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
- cicr4 |= CICR4_HSP;
- if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
- cicr4 |= CICR4_VSP;
- cicr0 = __raw_readl(pcdev->base + CICR0);
- if (cicr0 & CICR0_ENB)
- __raw_writel(cicr0 & ~CICR0_ENB, pcdev->base + CICR0);
- cicr1 = CICR1_PPL_VAL(pcdev->current_pix.width - 1) | bpp | dw;
- switch (pixfmt) {
- case V4L2_PIX_FMT_YUV422P:
- pcdev->channels = 3;
- cicr1 |= CICR1_YCBCR_F;
- /*
- * Normally, pxa bus wants as input UYVY format. We allow all
- * reorderings of the YUV422 format, as no processing is done,
- * and the YUV stream is just passed through without any
- * transformation. Note that UYVY is the only format that
- * should be used if pxa framebuffer Overlay2 is used.
- */
- /* fall through */
- case V4L2_PIX_FMT_UYVY:
- case V4L2_PIX_FMT_VYUY:
- case V4L2_PIX_FMT_YUYV:
- case V4L2_PIX_FMT_YVYU:
- cicr1 |= CICR1_COLOR_SP_VAL(2);
- break;
- case V4L2_PIX_FMT_RGB555:
- cicr1 |= CICR1_RGB_BPP_VAL(1) | CICR1_RGBT_CONV_VAL(2) |
- CICR1_TBIT | CICR1_COLOR_SP_VAL(1);
- break;
- case V4L2_PIX_FMT_RGB565:
- cicr1 |= CICR1_COLOR_SP_VAL(1) | CICR1_RGB_BPP_VAL(2);
- break;
- }
- cicr2 = 0;
- cicr3 = CICR3_LPF_VAL(pcdev->current_pix.height - 1) |
- CICR3_BFW_VAL(min((u32)255, y_skip_top));
- cicr4 |= pcdev->mclk_divisor;
- __raw_writel(cicr1, pcdev->base + CICR1);
- __raw_writel(cicr2, pcdev->base + CICR2);
- __raw_writel(cicr3, pcdev->base + CICR3);
- __raw_writel(cicr4, pcdev->base + CICR4);
- /* CIF interrupts are not used, only DMA */
- cicr0 = (cicr0 & CICR0_ENB) | (pcdev->platform_flags & PXA_CAMERA_MASTER ?
- CICR0_SIM_MP : (CICR0_SL_CAP_EN | CICR0_SIM_SP));
- cicr0 |= CICR0_DMAEN | CICR0_IRQ_MASK;
- __raw_writel(cicr0, pcdev->base + CICR0);
- }
- /*
- * Videobuf2 section
- */
- static void pxa_buffer_cleanup(struct pxa_buffer *buf)
- {
- int i;
- for (i = 0; i < 3 && buf->descs[i]; i++) {
- dmaengine_desc_free(buf->descs[i]);
- kfree(buf->sg[i]);
- buf->descs[i] = NULL;
- buf->sg[i] = NULL;
- buf->sg_len[i] = 0;
- buf->plane_sizes[i] = 0;
- }
- buf->nb_planes = 0;
- }
- static int pxa_buffer_init(struct pxa_camera_dev *pcdev,
- struct pxa_buffer *buf)
- {
- struct vb2_buffer *vb = &buf->vbuf.vb2_buf;
- struct sg_table *sgt = vb2_dma_sg_plane_desc(vb, 0);
- int nb_channels = pcdev->channels;
- int i, ret = 0;
- unsigned long size = vb2_plane_size(vb, 0);
- switch (nb_channels) {
- case 1:
- buf->plane_sizes[0] = size;
- break;
- case 3:
- buf->plane_sizes[0] = size / 2;
- buf->plane_sizes[1] = size / 4;
- buf->plane_sizes[2] = size / 4;
- break;
- default:
- return -EINVAL;
- }
- buf->nb_planes = nb_channels;
- ret = sg_split(sgt->sgl, sgt->nents, 0, nb_channels,
- buf->plane_sizes, buf->sg, buf->sg_len, GFP_KERNEL);
- if (ret < 0) {
- dev_err(pcdev_to_dev(pcdev),
- "sg_split failed: %d\n", ret);
- return ret;
- }
- for (i = 0; i < nb_channels; i++) {
- ret = pxa_init_dma_channel(pcdev, buf, i,
- buf->sg[i], buf->sg_len[i]);
- if (ret) {
- pxa_buffer_cleanup(buf);
- return ret;
- }
- }
- INIT_LIST_HEAD(&buf->queue);
- return ret;
- }
- static void pxac_vb2_cleanup(struct vb2_buffer *vb)
- {
- struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
- dev_dbg(pcdev_to_dev(pcdev),
- "%s(vb=%p)\n", __func__, vb);
- pxa_buffer_cleanup(buf);
- }
- static void pxac_vb2_queue(struct vb2_buffer *vb)
- {
- struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
- dev_dbg(pcdev_to_dev(pcdev),
- "%s(vb=%p) nb_channels=%d size=%lu active=%p\n",
- __func__, vb, pcdev->channels, vb2_get_plane_payload(vb, 0),
- pcdev->active);
- list_add_tail(&buf->queue, &pcdev->capture);
- pxa_dma_add_tail_buf(pcdev, buf);
- }
- /*
- * Please check the DMA prepared buffer structure in :
- * Documentation/media/v4l-drivers/pxa_camera.rst
- * Please check also in pxa_camera_check_link_miss() to understand why DMA chain
- * modification while DMA chain is running will work anyway.
- */
- static int pxac_vb2_prepare(struct vb2_buffer *vb)
- {
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
- struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
- int ret = 0;
- #ifdef DEBUG
- int i;
- #endif
- switch (pcdev->channels) {
- case 1:
- case 3:
- vb2_set_plane_payload(vb, 0, pcdev->current_pix.sizeimage);
- break;
- default:
- return -EINVAL;
- }
- dev_dbg(pcdev_to_dev(pcdev),
- "%s (vb=%p) nb_channels=%d size=%lu\n",
- __func__, vb, pcdev->channels, vb2_get_plane_payload(vb, 0));
- WARN_ON(!pcdev->current_fmt);
- #ifdef DEBUG
- /*
- * This can be useful if you want to see if we actually fill
- * the buffer with something
- */
- for (i = 0; i < vb->num_planes; i++)
- memset((void *)vb2_plane_vaddr(vb, i),
- 0xaa, vb2_get_plane_payload(vb, i));
- #endif
- /*
- * I think, in buf_prepare you only have to protect global data,
- * the actual buffer is yours
- */
- buf->inwork = 0;
- pxa_videobuf_set_actdma(pcdev, buf);
- return ret;
- }
- static int pxac_vb2_init(struct vb2_buffer *vb)
- {
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vb->vb2_queue);
- struct pxa_buffer *buf = vb2_to_pxa_buffer(vb);
- dev_dbg(pcdev_to_dev(pcdev),
- "%s(nb_channels=%d)\n",
- __func__, pcdev->channels);
- return pxa_buffer_init(pcdev, buf);
- }
- static int pxac_vb2_queue_setup(struct vb2_queue *vq,
- unsigned int *nbufs,
- unsigned int *num_planes, unsigned int sizes[],
- struct device *alloc_devs[])
- {
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq);
- int size = pcdev->current_pix.sizeimage;
- dev_dbg(pcdev_to_dev(pcdev),
- "%s(vq=%p nbufs=%d num_planes=%d size=%d)\n",
- __func__, vq, *nbufs, *num_planes, size);
- /*
- * Called from VIDIOC_REQBUFS or in compatibility mode For YUV422P
- * format, even if there are 3 planes Y, U and V, we reply there is only
- * one plane, containing Y, U and V data, one after the other.
- */
- if (*num_planes)
- return sizes[0] < size ? -EINVAL : 0;
- *num_planes = 1;
- switch (pcdev->channels) {
- case 1:
- case 3:
- sizes[0] = size;
- break;
- default:
- return -EINVAL;
- }
- if (!*nbufs)
- *nbufs = 1;
- return 0;
- }
- static int pxac_vb2_start_streaming(struct vb2_queue *vq, unsigned int count)
- {
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq);
- dev_dbg(pcdev_to_dev(pcdev), "%s(count=%d) active=%p\n",
- __func__, count, pcdev->active);
- pcdev->buf_sequence = 0;
- if (!pcdev->active)
- pxa_camera_start_capture(pcdev);
- return 0;
- }
- static void pxac_vb2_stop_streaming(struct vb2_queue *vq)
- {
- struct pxa_camera_dev *pcdev = vb2_get_drv_priv(vq);
- struct pxa_buffer *buf, *tmp;
- dev_dbg(pcdev_to_dev(pcdev), "%s active=%p\n",
- __func__, pcdev->active);
- pxa_camera_stop_capture(pcdev);
- list_for_each_entry_safe(buf, tmp, &pcdev->capture, queue)
- pxa_camera_wakeup(pcdev, buf, VB2_BUF_STATE_ERROR);
- }
- static const struct vb2_ops pxac_vb2_ops = {
- .queue_setup = pxac_vb2_queue_setup,
- .buf_init = pxac_vb2_init,
- .buf_prepare = pxac_vb2_prepare,
- .buf_queue = pxac_vb2_queue,
- .buf_cleanup = pxac_vb2_cleanup,
- .start_streaming = pxac_vb2_start_streaming,
- .stop_streaming = pxac_vb2_stop_streaming,
- .wait_prepare = vb2_ops_wait_prepare,
- .wait_finish = vb2_ops_wait_finish,
- };
- static int pxa_camera_init_videobuf2(struct pxa_camera_dev *pcdev)
- {
- int ret;
- struct vb2_queue *vq = &pcdev->vb2_vq;
- memset(vq, 0, sizeof(*vq));
- vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
- vq->drv_priv = pcdev;
- vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- vq->buf_struct_size = sizeof(struct pxa_buffer);
- vq->dev = pcdev->v4l2_dev.dev;
- vq->ops = &pxac_vb2_ops;
- vq->mem_ops = &vb2_dma_sg_memops;
- vq->lock = &pcdev->mlock;
- ret = vb2_queue_init(vq);
- dev_dbg(pcdev_to_dev(pcdev),
- "vb2_queue_init(vq=%p): %d\n", vq, ret);
- return ret;
- }
- /*
- * Video ioctls section
- */
- static int pxa_camera_set_bus_param(struct pxa_camera_dev *pcdev)
- {
- struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
- u32 pixfmt = pcdev->current_fmt->host_fmt->fourcc;
- unsigned long bus_flags, common_flags;
- int ret;
- ret = test_platform_param(pcdev,
- pcdev->current_fmt->host_fmt->bits_per_sample,
- &bus_flags);
- if (ret < 0)
- return ret;
- ret = sensor_call(pcdev, video, g_mbus_config, &cfg);
- if (!ret) {
- common_flags = pxa_mbus_config_compatible(&cfg,
- bus_flags);
- if (!common_flags) {
- dev_warn(pcdev_to_dev(pcdev),
- "Flags incompatible: camera 0x%x, host 0x%lx\n",
- cfg.flags, bus_flags);
- return -EINVAL;
- }
- } else if (ret != -ENOIOCTLCMD) {
- return ret;
- } else {
- common_flags = bus_flags;
- }
- pcdev->channels = 1;
- /* Make choices, based on platform preferences */
- if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) &&
- (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) {
- if (pcdev->platform_flags & PXA_CAMERA_HSP)
- common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH;
- else
- common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW;
- }
- if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) &&
- (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) {
- if (pcdev->platform_flags & PXA_CAMERA_VSP)
- common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH;
- else
- common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW;
- }
- if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) &&
- (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) {
- if (pcdev->platform_flags & PXA_CAMERA_PCP)
- common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING;
- else
- common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING;
- }
- cfg.flags = common_flags;
- ret = sensor_call(pcdev, video, s_mbus_config, &cfg);
- if (ret < 0 && ret != -ENOIOCTLCMD) {
- dev_dbg(pcdev_to_dev(pcdev),
- "camera s_mbus_config(0x%lx) returned %d\n",
- common_flags, ret);
- return ret;
- }
- pxa_camera_setup_cicr(pcdev, common_flags, pixfmt);
- return 0;
- }
- static int pxa_camera_try_bus_param(struct pxa_camera_dev *pcdev,
- unsigned char buswidth)
- {
- struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
- unsigned long bus_flags, common_flags;
- int ret = test_platform_param(pcdev, buswidth, &bus_flags);
- if (ret < 0)
- return ret;
- ret = sensor_call(pcdev, video, g_mbus_config, &cfg);
- if (!ret) {
- common_flags = pxa_mbus_config_compatible(&cfg,
- bus_flags);
- if (!common_flags) {
- dev_warn(pcdev_to_dev(pcdev),
- "Flags incompatible: camera 0x%x, host 0x%lx\n",
- cfg.flags, bus_flags);
- return -EINVAL;
- }
- } else if (ret == -ENOIOCTLCMD) {
- ret = 0;
- }
- return ret;
- }
- static const struct pxa_mbus_pixelfmt pxa_camera_formats[] = {
- {
- .fourcc = V4L2_PIX_FMT_YUV422P,
- .name = "Planar YUV422 16 bit",
- .bits_per_sample = 8,
- .packing = PXA_MBUS_PACKING_2X8_PADHI,
- .order = PXA_MBUS_ORDER_LE,
- .layout = PXA_MBUS_LAYOUT_PLANAR_2Y_U_V,
- },
- };
- /* This will be corrected as we get more formats */
- static bool pxa_camera_packing_supported(const struct pxa_mbus_pixelfmt *fmt)
- {
- return fmt->packing == PXA_MBUS_PACKING_NONE ||
- (fmt->bits_per_sample == 8 &&
- fmt->packing == PXA_MBUS_PACKING_2X8_PADHI) ||
- (fmt->bits_per_sample > 8 &&
- fmt->packing == PXA_MBUS_PACKING_EXTEND16);
- }
- static int pxa_camera_get_formats(struct v4l2_device *v4l2_dev,
- unsigned int idx,
- struct pxa_camera_format_xlate *xlate)
- {
- struct pxa_camera_dev *pcdev = v4l2_dev_to_pcdev(v4l2_dev);
- int formats = 0, ret;
- struct v4l2_subdev_mbus_code_enum code = {
- .which = V4L2_SUBDEV_FORMAT_ACTIVE,
- .index = idx,
- };
- const struct pxa_mbus_pixelfmt *fmt;
- ret = sensor_call(pcdev, pad, enum_mbus_code, NULL, &code);
- if (ret < 0)
- /* No more formats */
- return 0;
- fmt = pxa_mbus_get_fmtdesc(code.code);
- if (!fmt) {
- dev_err(pcdev_to_dev(pcdev),
- "Invalid format code #%u: %d\n", idx, code.code);
- return 0;
- }
- /* This also checks support for the requested bits-per-sample */
- ret = pxa_camera_try_bus_param(pcdev, fmt->bits_per_sample);
- if (ret < 0)
- return 0;
- switch (code.code) {
- case MEDIA_BUS_FMT_UYVY8_2X8:
- formats++;
- if (xlate) {
- xlate->host_fmt = &pxa_camera_formats[0];
- xlate->code = code.code;
- xlate++;
- dev_dbg(pcdev_to_dev(pcdev),
- "Providing format %s using code %d\n",
- pxa_camera_formats[0].name, code.code);
- }
- /* fall through */
- case MEDIA_BUS_FMT_VYUY8_2X8:
- case MEDIA_BUS_FMT_YUYV8_2X8:
- case MEDIA_BUS_FMT_YVYU8_2X8:
- case MEDIA_BUS_FMT_RGB565_2X8_LE:
- case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE:
- if (xlate)
- dev_dbg(pcdev_to_dev(pcdev),
- "Providing format %s packed\n",
- fmt->name);
- break;
- default:
- if (!pxa_camera_packing_supported(fmt))
- return 0;
- if (xlate)
- dev_dbg(pcdev_to_dev(pcdev),
- "Providing format %s in pass-through mode\n",
- fmt->name);
- break;
- }
- /* Generic pass-through */
- formats++;
- if (xlate) {
- xlate->host_fmt = fmt;
- xlate->code = code.code;
- xlate++;
- }
- return formats;
- }
- static int pxa_camera_build_formats(struct pxa_camera_dev *pcdev)
- {
- struct pxa_camera_format_xlate *xlate;
- xlate = pxa_mbus_build_fmts_xlate(&pcdev->v4l2_dev, pcdev->sensor,
- pxa_camera_get_formats);
- if (IS_ERR(xlate))
- return PTR_ERR(xlate);
- pcdev->user_formats = xlate;
- return 0;
- }
- static void pxa_camera_destroy_formats(struct pxa_camera_dev *pcdev)
- {
- kfree(pcdev->user_formats);
- }
- static int pxa_camera_check_frame(u32 width, u32 height)
- {
- /* limit to pxa hardware capabilities */
- return height < 32 || height > 2048 || width < 48 || width > 2048 ||
- (width & 0x01);
- }
- #ifdef CONFIG_VIDEO_ADV_DEBUG
- static int pxac_vidioc_g_register(struct file *file, void *priv,
- struct v4l2_dbg_register *reg)
- {
- struct pxa_camera_dev *pcdev = video_drvdata(file);
- if (reg->reg > CIBR2)
- return -ERANGE;
- reg->val = __raw_readl(pcdev->base + reg->reg);
- reg->size = sizeof(__u32);
- return 0;
- }
- static int pxac_vidioc_s_register(struct file *file, void *priv,
- const struct v4l2_dbg_register *reg)
- {
- struct pxa_camera_dev *pcdev = video_drvdata(file);
- if (reg->reg > CIBR2)
- return -ERANGE;
- if (reg->size != sizeof(__u32))
- return -EINVAL;
- __raw_writel(reg->val, pcdev->base + reg->reg);
- return 0;
- }
- #endif
- static int pxac_vidioc_enum_fmt_vid_cap(struct file *filp, void *priv,
- struct v4l2_fmtdesc *f)
- {
- struct pxa_camera_dev *pcdev = video_drvdata(filp);
- const struct pxa_mbus_pixelfmt *format;
- unsigned int idx;
- for (idx = 0; pcdev->user_formats[idx].code; idx++);
- if (f->index >= idx)
- return -EINVAL;
- format = pcdev->user_formats[f->index].host_fmt;
- f->pixelformat = format->fourcc;
- return 0;
- }
- static int pxac_vidioc_g_fmt_vid_cap(struct file *filp, void *priv,
- struct v4l2_format *f)
- {
- struct pxa_camera_dev *pcdev = video_drvdata(filp);
- struct v4l2_pix_format *pix = &f->fmt.pix;
- pix->width = pcdev->current_pix.width;
- pix->height = pcdev->current_pix.height;
- pix->bytesperline = pcdev->current_pix.bytesperline;
- pix->sizeimage = pcdev->current_pix.sizeimage;
- pix->field = pcdev->current_pix.field;
- pix->pixelformat = pcdev->current_fmt->host_fmt->fourcc;
- pix->colorspace = pcdev->current_pix.colorspace;
- dev_dbg(pcdev_to_dev(pcdev), "current_fmt->fourcc: 0x%08x\n",
- pcdev->current_fmt->host_fmt->fourcc);
- return 0;
- }
- static int pxac_vidioc_try_fmt_vid_cap(struct file *filp, void *priv,
- struct v4l2_format *f)
- {
- struct pxa_camera_dev *pcdev = video_drvdata(filp);
- const struct pxa_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;
- int ret;
- xlate = pxa_mbus_xlate_by_fourcc(pcdev->user_formats, pixfmt);
- if (!xlate) {
- dev_warn(pcdev_to_dev(pcdev), "Format %x not found\n", pixfmt);
- return -EINVAL;
- }
- /*
- * Limit to pxa hardware capabilities. YUV422P planar format requires
- * images size to be a multiple of 16 bytes. If not, zeros will be
- * inserted between Y and U planes, and U and V planes, which violates
- * the YUV422P standard.
- */
- v4l_bound_align_image(&pix->width, 48, 2048, 1,
- &pix->height, 32, 2048, 0,
- pixfmt == V4L2_PIX_FMT_YUV422P ? 4 : 0);
- v4l2_fill_mbus_format(mf, pix, xlate->code);
- ret = sensor_call(pcdev, pad, set_fmt, &pad_cfg, &format);
- if (ret < 0)
- return ret;
- v4l2_fill_pix_format(pix, mf);
- /* Only progressive video supported so far */
- switch (mf->field) {
- case V4L2_FIELD_ANY:
- case V4L2_FIELD_NONE:
- pix->field = V4L2_FIELD_NONE;
- break;
- default:
- /* TODO: support interlaced at least in pass-through mode */
- dev_err(pcdev_to_dev(pcdev), "Field type %d unsupported.\n",
- mf->field);
- return -EINVAL;
- }
- ret = pxa_mbus_bytes_per_line(pix->width, xlate->host_fmt);
- if (ret < 0)
- return ret;
- pix->bytesperline = ret;
- ret = pxa_mbus_image_size(xlate->host_fmt, pix->bytesperline,
- pix->height);
- if (ret < 0)
- return ret;
- pix->sizeimage = ret;
- return 0;
- }
- static int pxac_vidioc_s_fmt_vid_cap(struct file *filp, void *priv,
- struct v4l2_format *f)
- {
- struct pxa_camera_dev *pcdev = video_drvdata(filp);
- const struct pxa_camera_format_xlate *xlate;
- struct v4l2_pix_format *pix = &f->fmt.pix;
- struct v4l2_subdev_format format = {
- .which = V4L2_SUBDEV_FORMAT_ACTIVE,
- };
- unsigned long flags;
- int ret, is_busy;
- dev_dbg(pcdev_to_dev(pcdev),
- "s_fmt_vid_cap(pix=%dx%d:%x)\n",
- pix->width, pix->height, pix->pixelformat);
- spin_lock_irqsave(&pcdev->lock, flags);
- is_busy = pcdev->active || vb2_is_busy(&pcdev->vb2_vq);
- spin_unlock_irqrestore(&pcdev->lock, flags);
- if (is_busy)
- return -EBUSY;
- ret = pxac_vidioc_try_fmt_vid_cap(filp, priv, f);
- if (ret)
- return ret;
- xlate = pxa_mbus_xlate_by_fourcc(pcdev->user_formats,
- pix->pixelformat);
- v4l2_fill_mbus_format(&format.format, pix, xlate->code);
- ret = sensor_call(pcdev, pad, set_fmt, NULL, &format);
- if (ret < 0) {
- dev_warn(pcdev_to_dev(pcdev),
- "Failed to configure for format %x\n",
- pix->pixelformat);
- } else if (pxa_camera_check_frame(pix->width, pix->height)) {
- dev_warn(pcdev_to_dev(pcdev),
- "Camera driver produced an unsupported frame %dx%d\n",
- pix->width, pix->height);
- return -EINVAL;
- }
- pcdev->current_fmt = xlate;
- pcdev->current_pix = *pix;
- ret = pxa_camera_set_bus_param(pcdev);
- return ret;
- }
- static int pxac_vidioc_querycap(struct file *file, void *priv,
- struct v4l2_capability *cap)
- {
- strscpy(cap->bus_info, "platform:pxa-camera", sizeof(cap->bus_info));
- strscpy(cap->driver, PXA_CAM_DRV_NAME, sizeof(cap->driver));
- strscpy(cap->card, pxa_cam_driver_description, sizeof(cap->card));
- return 0;
- }
- static int pxac_vidioc_enum_input(struct file *file, void *priv,
- struct v4l2_input *i)
- {
- if (i->index > 0)
- return -EINVAL;
- i->type = V4L2_INPUT_TYPE_CAMERA;
- strscpy(i->name, "Camera", sizeof(i->name));
- return 0;
- }
- static int pxac_vidioc_g_input(struct file *file, void *priv, unsigned int *i)
- {
- *i = 0;
- return 0;
- }
- static int pxac_vidioc_s_input(struct file *file, void *priv, unsigned int i)
- {
- if (i > 0)
- return -EINVAL;
- return 0;
- }
- static int pxac_sensor_set_power(struct pxa_camera_dev *pcdev, int on)
- {
- int ret;
- ret = sensor_call(pcdev, core, s_power, on);
- if (ret == -ENOIOCTLCMD)
- ret = 0;
- if (ret) {
- dev_warn(pcdev_to_dev(pcdev),
- "Failed to put subdevice in %s mode: %d\n",
- on ? "normal operation" : "power saving", ret);
- }
- return ret;
- }
- static int pxac_fops_camera_open(struct file *filp)
- {
- struct pxa_camera_dev *pcdev = video_drvdata(filp);
- int ret;
- mutex_lock(&pcdev->mlock);
- ret = v4l2_fh_open(filp);
- if (ret < 0)
- goto out;
- if (!v4l2_fh_is_singular_file(filp))
- goto out;
- ret = pxac_sensor_set_power(pcdev, 1);
- if (ret)
- v4l2_fh_release(filp);
- out:
- mutex_unlock(&pcdev->mlock);
- return ret;
- }
- static int pxac_fops_camera_release(struct file *filp)
- {
- struct pxa_camera_dev *pcdev = video_drvdata(filp);
- int ret;
- bool fh_singular;
- mutex_lock(&pcdev->mlock);
- fh_singular = v4l2_fh_is_singular_file(filp);
- ret = _vb2_fop_release(filp, NULL);
- if (fh_singular)
- ret = pxac_sensor_set_power(pcdev, 0);
- mutex_unlock(&pcdev->mlock);
- return ret;
- }
- static const struct v4l2_file_operations pxa_camera_fops = {
- .owner = THIS_MODULE,
- .open = pxac_fops_camera_open,
- .release = pxac_fops_camera_release,
- .read = vb2_fop_read,
- .poll = vb2_fop_poll,
- .mmap = vb2_fop_mmap,
- .unlocked_ioctl = video_ioctl2,
- };
- static const struct v4l2_ioctl_ops pxa_camera_ioctl_ops = {
- .vidioc_querycap = pxac_vidioc_querycap,
- .vidioc_enum_input = pxac_vidioc_enum_input,
- .vidioc_g_input = pxac_vidioc_g_input,
- .vidioc_s_input = pxac_vidioc_s_input,
- .vidioc_enum_fmt_vid_cap = pxac_vidioc_enum_fmt_vid_cap,
- .vidioc_g_fmt_vid_cap = pxac_vidioc_g_fmt_vid_cap,
- .vidioc_s_fmt_vid_cap = pxac_vidioc_s_fmt_vid_cap,
- .vidioc_try_fmt_vid_cap = pxac_vidioc_try_fmt_vid_cap,
- .vidioc_reqbufs = vb2_ioctl_reqbufs,
- .vidioc_create_bufs = vb2_ioctl_create_bufs,
- .vidioc_querybuf = vb2_ioctl_querybuf,
- .vidioc_qbuf = vb2_ioctl_qbuf,
- .vidioc_dqbuf = vb2_ioctl_dqbuf,
- .vidioc_expbuf = vb2_ioctl_expbuf,
- .vidioc_streamon = vb2_ioctl_streamon,
- .vidioc_streamoff = vb2_ioctl_streamoff,
- #ifdef CONFIG_VIDEO_ADV_DEBUG
- .vidioc_g_register = pxac_vidioc_g_register,
- .vidioc_s_register = pxac_vidioc_s_register,
- #endif
- .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
- .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
- };
- static const struct v4l2_clk_ops pxa_camera_mclk_ops = {
- };
- static const struct video_device pxa_camera_videodev_template = {
- .name = "pxa-camera",
- .minor = -1,
- .fops = &pxa_camera_fops,
- .ioctl_ops = &pxa_camera_ioctl_ops,
- .release = video_device_release_empty,
- .device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING,
- };
- static int pxa_camera_sensor_bound(struct v4l2_async_notifier *notifier,
- struct v4l2_subdev *subdev,
- struct v4l2_async_subdev *asd)
- {
- int err;
- struct v4l2_device *v4l2_dev = notifier->v4l2_dev;
- struct pxa_camera_dev *pcdev = v4l2_dev_to_pcdev(v4l2_dev);
- struct video_device *vdev = &pcdev->vdev;
- struct v4l2_pix_format *pix = &pcdev->current_pix;
- struct v4l2_subdev_format format = {
- .which = V4L2_SUBDEV_FORMAT_ACTIVE,
- };
- struct v4l2_mbus_framefmt *mf = &format.format;
- dev_info(pcdev_to_dev(pcdev), "%s(): trying to bind a device\n",
- __func__);
- mutex_lock(&pcdev->mlock);
- *vdev = pxa_camera_videodev_template;
- vdev->v4l2_dev = v4l2_dev;
- vdev->lock = &pcdev->mlock;
- pcdev->sensor = subdev;
- pcdev->vdev.queue = &pcdev->vb2_vq;
- pcdev->vdev.v4l2_dev = &pcdev->v4l2_dev;
- pcdev->vdev.ctrl_handler = subdev->ctrl_handler;
- video_set_drvdata(&pcdev->vdev, pcdev);
- err = pxa_camera_build_formats(pcdev);
- if (err) {
- dev_err(pcdev_to_dev(pcdev), "building formats failed: %d\n",
- err);
- goto out;
- }
- pcdev->current_fmt = pcdev->user_formats;
- pix->field = V4L2_FIELD_NONE;
- pix->width = DEFAULT_WIDTH;
- pix->height = DEFAULT_HEIGHT;
- pix->bytesperline =
- pxa_mbus_bytes_per_line(pix->width,
- pcdev->current_fmt->host_fmt);
- pix->sizeimage =
- pxa_mbus_image_size(pcdev->current_fmt->host_fmt,
- pix->bytesperline, pix->height);
- pix->pixelformat = pcdev->current_fmt->host_fmt->fourcc;
- v4l2_fill_mbus_format(mf, pix, pcdev->current_fmt->code);
- err = pxac_sensor_set_power(pcdev, 1);
- if (err)
- goto out;
- err = sensor_call(pcdev, pad, set_fmt, NULL, &format);
- if (err)
- goto out_sensor_poweroff;
- v4l2_fill_pix_format(pix, mf);
- pr_info("%s(): colorspace=0x%x pixfmt=0x%x\n",
- __func__, pix->colorspace, pix->pixelformat);
- err = pxa_camera_init_videobuf2(pcdev);
- if (err)
- goto out_sensor_poweroff;
- err = video_register_device(&pcdev->vdev, VFL_TYPE_GRABBER, -1);
- if (err) {
- v4l2_err(v4l2_dev, "register video device failed: %d\n", err);
- pcdev->sensor = NULL;
- } else {
- dev_info(pcdev_to_dev(pcdev),
- "PXA Camera driver attached to camera %s\n",
- subdev->name);
- }
- out_sensor_poweroff:
- err = pxac_sensor_set_power(pcdev, 0);
- out:
- mutex_unlock(&pcdev->mlock);
- return err;
- }
- static void pxa_camera_sensor_unbind(struct v4l2_async_notifier *notifier,
- struct v4l2_subdev *subdev,
- struct v4l2_async_subdev *asd)
- {
- struct pxa_camera_dev *pcdev = v4l2_dev_to_pcdev(notifier->v4l2_dev);
- mutex_lock(&pcdev->mlock);
- dev_info(pcdev_to_dev(pcdev),
- "PXA Camera driver detached from camera %s\n",
- subdev->name);
- /* disable capture, disable interrupts */
- __raw_writel(0x3ff, pcdev->base + CICR0);
- /* Stop DMA engine */
- pxa_dma_stop_channels(pcdev);
- pxa_camera_destroy_formats(pcdev);
- if (pcdev->mclk_clk) {
- v4l2_clk_unregister(pcdev->mclk_clk);
- pcdev->mclk_clk = NULL;
- }
- video_unregister_device(&pcdev->vdev);
- pcdev->sensor = NULL;
- mutex_unlock(&pcdev->mlock);
- }
- static const struct v4l2_async_notifier_operations pxa_camera_sensor_ops = {
- .bound = pxa_camera_sensor_bound,
- .unbind = pxa_camera_sensor_unbind,
- };
- /*
- * Driver probe, remove, suspend and resume operations
- */
- static int pxa_camera_suspend(struct device *dev)
- {
- struct pxa_camera_dev *pcdev = dev_get_drvdata(dev);
- int i = 0, ret = 0;
- pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR0);
- pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR1);
- pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR2);
- pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR3);
- pcdev->save_cicr[i++] = __raw_readl(pcdev->base + CICR4);
- if (pcdev->sensor)
- ret = pxac_sensor_set_power(pcdev, 0);
- return ret;
- }
- static int pxa_camera_resume(struct device *dev)
- {
- struct pxa_camera_dev *pcdev = dev_get_drvdata(dev);
- int i = 0, ret = 0;
- __raw_writel(pcdev->save_cicr[i++] & ~CICR0_ENB, pcdev->base + CICR0);
- __raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR1);
- __raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR2);
- __raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR3);
- __raw_writel(pcdev->save_cicr[i++], pcdev->base + CICR4);
- if (pcdev->sensor) {
- ret = pxac_sensor_set_power(pcdev, 1);
- }
- /* Restart frame capture if active buffer exists */
- if (!ret && pcdev->active)
- pxa_camera_start_capture(pcdev);
- return ret;
- }
- static int pxa_camera_pdata_from_dt(struct device *dev,
- struct pxa_camera_dev *pcdev,
- struct v4l2_async_subdev *asd)
- {
- u32 mclk_rate;
- struct device_node *remote, *np = dev->of_node;
- struct v4l2_fwnode_endpoint ep = { .bus_type = 0 };
- int err = of_property_read_u32(np, "clock-frequency",
- &mclk_rate);
- if (!err) {
- pcdev->platform_flags |= PXA_CAMERA_MCLK_EN;
- pcdev->mclk = mclk_rate;
- }
- np = of_graph_get_next_endpoint(np, NULL);
- if (!np) {
- dev_err(dev, "could not find endpoint\n");
- return -EINVAL;
- }
- err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(np), &ep);
- if (err) {
- dev_err(dev, "could not parse endpoint\n");
- goto out;
- }
- switch (ep.bus.parallel.bus_width) {
- case 4:
- pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_4;
- break;
- case 5:
- pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_5;
- break;
- case 8:
- pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_8;
- break;
- case 9:
- pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_9;
- break;
- case 10:
- pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_10;
- break;
- default:
- break;
- }
- if (ep.bus.parallel.flags & V4L2_MBUS_MASTER)
- pcdev->platform_flags |= PXA_CAMERA_MASTER;
- if (ep.bus.parallel.flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
- pcdev->platform_flags |= PXA_CAMERA_HSP;
- if (ep.bus.parallel.flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
- pcdev->platform_flags |= PXA_CAMERA_VSP;
- if (ep.bus.parallel.flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
- pcdev->platform_flags |= PXA_CAMERA_PCLK_EN | PXA_CAMERA_PCP;
- if (ep.bus.parallel.flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
- pcdev->platform_flags |= PXA_CAMERA_PCLK_EN;
- asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
- remote = of_graph_get_remote_port_parent(np);
- if (remote)
- asd->match.fwnode = of_fwnode_handle(remote);
- else
- dev_notice(dev, "no remote for %pOF\n", np);
- out:
- of_node_put(np);
- return err;
- }
- static int pxa_camera_probe(struct platform_device *pdev)
- {
- struct pxa_camera_dev *pcdev;
- struct resource *res;
- void __iomem *base;
- struct dma_slave_config config = {
- .src_addr_width = 0,
- .src_maxburst = 8,
- .direction = DMA_DEV_TO_MEM,
- };
- char clk_name[V4L2_CLK_NAME_SIZE];
- int irq;
- int err = 0, i;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- irq = platform_get_irq(pdev, 0);
- if (!res || irq < 0)
- return -ENODEV;
- pcdev = devm_kzalloc(&pdev->dev, sizeof(*pcdev), GFP_KERNEL);
- if (!pcdev) {
- dev_err(&pdev->dev, "Could not allocate pcdev\n");
- return -ENOMEM;
- }
- pcdev->clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(pcdev->clk))
- return PTR_ERR(pcdev->clk);
- pcdev->res = res;
- pcdev->pdata = pdev->dev.platform_data;
- if (pcdev->pdata) {
- pcdev->platform_flags = pcdev->pdata->flags;
- pcdev->mclk = pcdev->pdata->mclk_10khz * 10000;
- pcdev->asd.match_type = V4L2_ASYNC_MATCH_I2C;
- pcdev->asd.match.i2c.adapter_id =
- pcdev->pdata->sensor_i2c_adapter_id;
- pcdev->asd.match.i2c.address = pcdev->pdata->sensor_i2c_address;
- } else if (pdev->dev.of_node) {
- err = pxa_camera_pdata_from_dt(&pdev->dev, pcdev, &pcdev->asd);
- } else {
- return -ENODEV;
- }
- if (err < 0)
- return err;
- if (!(pcdev->platform_flags & (PXA_CAMERA_DATAWIDTH_8 |
- PXA_CAMERA_DATAWIDTH_9 | PXA_CAMERA_DATAWIDTH_10))) {
- /*
- * Platform hasn't set available data widths. This is bad.
- * Warn and use a default.
- */
- dev_warn(&pdev->dev, "WARNING! Platform hasn't set available data widths, using default 10 bit\n");
- pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_10;
- }
- if (pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_8)
- pcdev->width_flags = 1 << 7;
- if (pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_9)
- pcdev->width_flags |= 1 << 8;
- if (pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_10)
- pcdev->width_flags |= 1 << 9;
- if (!pcdev->mclk) {
- dev_warn(&pdev->dev,
- "mclk == 0! Please, fix your platform data. Using default 20MHz\n");
- pcdev->mclk = 20000000;
- }
- pcdev->mclk_divisor = mclk_get_divisor(pdev, pcdev);
- INIT_LIST_HEAD(&pcdev->capture);
- spin_lock_init(&pcdev->lock);
- mutex_init(&pcdev->mlock);
- /*
- * Request the regions.
- */
- base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(base))
- return PTR_ERR(base);
- pcdev->irq = irq;
- pcdev->base = base;
- /* request dma */
- pcdev->dma_chans[0] = dma_request_slave_channel(&pdev->dev, "CI_Y");
- if (!pcdev->dma_chans[0]) {
- dev_err(&pdev->dev, "Can't request DMA for Y\n");
- return -ENODEV;
- }
- pcdev->dma_chans[1] = dma_request_slave_channel(&pdev->dev, "CI_U");
- if (!pcdev->dma_chans[1]) {
- dev_err(&pdev->dev, "Can't request DMA for Y\n");
- err = -ENODEV;
- goto exit_free_dma_y;
- }
- pcdev->dma_chans[2] = dma_request_slave_channel(&pdev->dev, "CI_V");
- if (!pcdev->dma_chans[2]) {
- dev_err(&pdev->dev, "Can't request DMA for V\n");
- err = -ENODEV;
- goto exit_free_dma_u;
- }
- for (i = 0; i < 3; i++) {
- config.src_addr = pcdev->res->start + CIBR0 + i * 8;
- err = dmaengine_slave_config(pcdev->dma_chans[i], &config);
- if (err < 0) {
- dev_err(&pdev->dev, "dma slave config failed: %d\n",
- err);
- goto exit_free_dma;
- }
- }
- /* request irq */
- err = devm_request_irq(&pdev->dev, pcdev->irq, pxa_camera_irq, 0,
- PXA_CAM_DRV_NAME, pcdev);
- if (err) {
- dev_err(&pdev->dev, "Camera interrupt register failed\n");
- goto exit_free_dma;
- }
- tasklet_init(&pcdev->task_eof, pxa_camera_eof, (unsigned long)pcdev);
- pxa_camera_activate(pcdev);
- dev_set_drvdata(&pdev->dev, pcdev);
- err = v4l2_device_register(&pdev->dev, &pcdev->v4l2_dev);
- if (err)
- goto exit_deactivate;
- v4l2_async_notifier_init(&pcdev->notifier);
- err = v4l2_async_notifier_add_subdev(&pcdev->notifier, &pcdev->asd);
- if (err) {
- fwnode_handle_put(pcdev->asd.match.fwnode);
- goto exit_free_v4l2dev;
- }
- pcdev->notifier.ops = &pxa_camera_sensor_ops;
- if (!of_have_populated_dt())
- pcdev->asd.match_type = V4L2_ASYNC_MATCH_I2C;
- err = pxa_camera_init_videobuf2(pcdev);
- if (err)
- goto exit_notifier_cleanup;
- if (pcdev->mclk) {
- v4l2_clk_name_i2c(clk_name, sizeof(clk_name),
- pcdev->asd.match.i2c.adapter_id,
- pcdev->asd.match.i2c.address);
- pcdev->mclk_clk = v4l2_clk_register(&pxa_camera_mclk_ops,
- clk_name, NULL);
- if (IS_ERR(pcdev->mclk_clk)) {
- err = PTR_ERR(pcdev->mclk_clk);
- goto exit_notifier_cleanup;
- }
- }
- err = v4l2_async_notifier_register(&pcdev->v4l2_dev, &pcdev->notifier);
- if (err)
- goto exit_free_clk;
- return 0;
- exit_free_clk:
- v4l2_clk_unregister(pcdev->mclk_clk);
- exit_notifier_cleanup:
- v4l2_async_notifier_cleanup(&pcdev->notifier);
- exit_free_v4l2dev:
- v4l2_device_unregister(&pcdev->v4l2_dev);
- exit_deactivate:
- pxa_camera_deactivate(pcdev);
- exit_free_dma:
- dma_release_channel(pcdev->dma_chans[2]);
- exit_free_dma_u:
- dma_release_channel(pcdev->dma_chans[1]);
- exit_free_dma_y:
- dma_release_channel(pcdev->dma_chans[0]);
- return err;
- }
- static int pxa_camera_remove(struct platform_device *pdev)
- {
- struct pxa_camera_dev *pcdev = dev_get_drvdata(&pdev->dev);
- pxa_camera_deactivate(pcdev);
- dma_release_channel(pcdev->dma_chans[0]);
- dma_release_channel(pcdev->dma_chans[1]);
- dma_release_channel(pcdev->dma_chans[2]);
- v4l2_async_notifier_unregister(&pcdev->notifier);
- v4l2_async_notifier_cleanup(&pcdev->notifier);
- if (pcdev->mclk_clk) {
- v4l2_clk_unregister(pcdev->mclk_clk);
- pcdev->mclk_clk = NULL;
- }
- v4l2_device_unregister(&pcdev->v4l2_dev);
- dev_info(&pdev->dev, "PXA Camera driver unloaded\n");
- return 0;
- }
- static const struct dev_pm_ops pxa_camera_pm = {
- .suspend = pxa_camera_suspend,
- .resume = pxa_camera_resume,
- };
- static const struct of_device_id pxa_camera_of_match[] = {
- { .compatible = "marvell,pxa270-qci", },
- {},
- };
- MODULE_DEVICE_TABLE(of, pxa_camera_of_match);
- static struct platform_driver pxa_camera_driver = {
- .driver = {
- .name = PXA_CAM_DRV_NAME,
- .pm = &pxa_camera_pm,
- .of_match_table = of_match_ptr(pxa_camera_of_match),
- },
- .probe = pxa_camera_probe,
- .remove = pxa_camera_remove,
- };
- module_platform_driver(pxa_camera_driver);
- MODULE_DESCRIPTION("PXA27x SoC Camera Host driver");
- MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
- MODULE_LICENSE("GPL");
- MODULE_VERSION(PXA_CAM_VERSION);
- MODULE_ALIAS("platform:" PXA_CAM_DRV_NAME);
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