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linux/drivers/media/platform/am437x/am437x-vpfe.c
Hans Verkuil 6a8c521c52 media: am437x: fix smatch warning 
Fixes this warning:

drivers/media/platform/am437x/am437x-vpfe.c:288 vpfe_ccdc_validate_param() warn: unsigned 'ccdcparam->alaw.gamma_wd' is never less than zero.

by dropping the gamma_wd < VPFE_CCDC_GAMMA_BITS_15_6 check
since VPFE_CCDC_GAMMA_BITS_15_6 is 0.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
2019-11-05 10:33:36 -03:00

2644 lines
69 KiB
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// SPDX-License-Identifier: GPL-2.0-only
/*
* TI VPFE capture Driver
*
* Copyright (C) 2013 - 2014 Texas Instruments, Inc.
*
* Benoit Parrot <bparrot@ti.com>
* Lad, Prabhakar <prabhakar.csengg@gmail.com>
*/
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_graph.h>
#include <linux/pinctrl/consumer.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/v4l2-fwnode.h>
#include "am437x-vpfe.h"
#define VPFE_MODULE_NAME "vpfe"
#define VPFE_VERSION "0.1.0"
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level 0-8");
#define vpfe_dbg(level, dev, fmt, arg...) \
v4l2_dbg(level, debug, &dev->v4l2_dev, fmt, ##arg)
#define vpfe_info(dev, fmt, arg...) \
v4l2_info(&dev->v4l2_dev, fmt, ##arg)
#define vpfe_err(dev, fmt, arg...) \
v4l2_err(&dev->v4l2_dev, fmt, ##arg)
/* standard information */
struct vpfe_standard {
v4l2_std_id std_id;
unsigned int width;
unsigned int height;
struct v4l2_fract pixelaspect;
int frame_format;
};
static const struct vpfe_standard vpfe_standards[] = {
{V4L2_STD_525_60, 720, 480, {11, 10}, 1},
{V4L2_STD_625_50, 720, 576, {54, 59}, 1},
};
static struct vpfe_fmt formats[VPFE_NUM_FORMATS] = {
{
.fourcc = V4L2_PIX_FMT_YUYV,
.code = MEDIA_BUS_FMT_YUYV8_2X8,
.bitsperpixel = 16,
}, {
.fourcc = V4L2_PIX_FMT_UYVY,
.code = MEDIA_BUS_FMT_UYVY8_2X8,
.bitsperpixel = 16,
}, {
.fourcc = V4L2_PIX_FMT_YVYU,
.code = MEDIA_BUS_FMT_YVYU8_2X8,
.bitsperpixel = 16,
}, {
.fourcc = V4L2_PIX_FMT_VYUY,
.code = MEDIA_BUS_FMT_VYUY8_2X8,
.bitsperpixel = 16,
}, {
.fourcc = V4L2_PIX_FMT_SBGGR8,
.code = MEDIA_BUS_FMT_SBGGR8_1X8,
.bitsperpixel = 8,
}, {
.fourcc = V4L2_PIX_FMT_SGBRG8,
.code = MEDIA_BUS_FMT_SGBRG8_1X8,
.bitsperpixel = 8,
}, {
.fourcc = V4L2_PIX_FMT_SGRBG8,
.code = MEDIA_BUS_FMT_SGRBG8_1X8,
.bitsperpixel = 8,
}, {
.fourcc = V4L2_PIX_FMT_SRGGB8,
.code = MEDIA_BUS_FMT_SRGGB8_1X8,
.bitsperpixel = 8,
}, {
.fourcc = V4L2_PIX_FMT_RGB565,
.code = MEDIA_BUS_FMT_RGB565_2X8_LE,
.bitsperpixel = 16,
}, {
.fourcc = V4L2_PIX_FMT_RGB565X,
.code = MEDIA_BUS_FMT_RGB565_2X8_BE,
.bitsperpixel = 16,
},
};
static int __subdev_get_format(struct vpfe_device *vpfe,
struct v4l2_mbus_framefmt *fmt);
static int vpfe_calc_format_size(struct vpfe_device *vpfe,
const struct vpfe_fmt *fmt,
struct v4l2_format *f);
static struct vpfe_fmt *find_format_by_code(struct vpfe_device *vpfe,
unsigned int code)
{
struct vpfe_fmt *fmt;
unsigned int k;
for (k = 0; k < vpfe->num_active_fmt; k++) {
fmt = vpfe->active_fmt[k];
if (fmt->code == code)
return fmt;
}
return NULL;
}
static struct vpfe_fmt *find_format_by_pix(struct vpfe_device *vpfe,
unsigned int pixelformat)
{
struct vpfe_fmt *fmt;
unsigned int k;
for (k = 0; k < vpfe->num_active_fmt; k++) {
fmt = vpfe->active_fmt[k];
if (fmt->fourcc == pixelformat)
return fmt;
}
return NULL;
}
static unsigned int __get_bytesperpixel(struct vpfe_device *vpfe,
const struct vpfe_fmt *fmt)
{
struct vpfe_subdev_info *sdinfo = vpfe->current_subdev;
unsigned int bus_width = sdinfo->vpfe_param.bus_width;
u32 bpp, bus_width_bytes, clocksperpixel;
bus_width_bytes = ALIGN(bus_width, 8) >> 3;
clocksperpixel = DIV_ROUND_UP(fmt->bitsperpixel, bus_width);
bpp = clocksperpixel * bus_width_bytes;
return bpp;
}
/* Print Four-character-code (FOURCC) */
static char *print_fourcc(u32 fmt)
{
static char code[5];
code[0] = (unsigned char)(fmt & 0xff);
code[1] = (unsigned char)((fmt >> 8) & 0xff);
code[2] = (unsigned char)((fmt >> 16) & 0xff);
code[3] = (unsigned char)((fmt >> 24) & 0xff);
code[4] = '\0';
return code;
}
static inline u32 vpfe_reg_read(struct vpfe_ccdc *ccdc, u32 offset)
{
return ioread32(ccdc->ccdc_cfg.base_addr + offset);
}
static inline void vpfe_reg_write(struct vpfe_ccdc *ccdc, u32 val, u32 offset)
{
iowrite32(val, ccdc->ccdc_cfg.base_addr + offset);
}
static inline struct vpfe_device *to_vpfe(struct vpfe_ccdc *ccdc)
{
return container_of(ccdc, struct vpfe_device, ccdc);
}
static inline
struct vpfe_cap_buffer *to_vpfe_buffer(struct vb2_v4l2_buffer *vb)
{
return container_of(vb, struct vpfe_cap_buffer, vb);
}
static inline void vpfe_pcr_enable(struct vpfe_ccdc *ccdc, int flag)
{
vpfe_reg_write(ccdc, !!flag, VPFE_PCR);
}
static void vpfe_config_enable(struct vpfe_ccdc *ccdc, int flag)
{
unsigned int cfg;
if (!flag) {
cfg = vpfe_reg_read(ccdc, VPFE_CONFIG);
cfg &= ~(VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT);
} else {
cfg = VPFE_CONFIG_EN_ENABLE << VPFE_CONFIG_EN_SHIFT;
}
vpfe_reg_write(ccdc, cfg, VPFE_CONFIG);
}
static void vpfe_ccdc_setwin(struct vpfe_ccdc *ccdc,
struct v4l2_rect *image_win,
enum ccdc_frmfmt frm_fmt,
int bpp)
{
int horz_start, horz_nr_pixels;
int vert_start, vert_nr_lines;
int val, mid_img;
/*
* ppc - per pixel count. indicates how many pixels per cell
* output to SDRAM. example, for ycbcr, it is one y and one c, so 2.
* raw capture this is 1
*/
horz_start = image_win->left * bpp;
horz_nr_pixels = (image_win->width * bpp) - 1;
vpfe_reg_write(ccdc, (horz_start << VPFE_HORZ_INFO_SPH_SHIFT) |
horz_nr_pixels, VPFE_HORZ_INFO);
vert_start = image_win->top;
if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
vert_nr_lines = (image_win->height >> 1) - 1;
vert_start >>= 1;
/* configure VDINT0 */
val = (vert_start << VPFE_VDINT_VDINT0_SHIFT);
} else {
vert_nr_lines = image_win->height - 1;
/*
* configure VDINT0 and VDINT1. VDINT1 will be at half
* of image height
*/
mid_img = vert_start + (image_win->height / 2);
val = (vert_start << VPFE_VDINT_VDINT0_SHIFT) |
(mid_img & VPFE_VDINT_VDINT1_MASK);
}
vpfe_reg_write(ccdc, val, VPFE_VDINT);
vpfe_reg_write(ccdc, (vert_start << VPFE_VERT_START_SLV0_SHIFT) |
vert_start, VPFE_VERT_START);
vpfe_reg_write(ccdc, vert_nr_lines, VPFE_VERT_LINES);
}
static void vpfe_reg_dump(struct vpfe_ccdc *ccdc)
{
struct vpfe_device *vpfe = to_vpfe(ccdc);
vpfe_dbg(3, vpfe, "ALAW: 0x%x\n", vpfe_reg_read(ccdc, VPFE_ALAW));
vpfe_dbg(3, vpfe, "CLAMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_CLAMP));
vpfe_dbg(3, vpfe, "DCSUB: 0x%x\n", vpfe_reg_read(ccdc, VPFE_DCSUB));
vpfe_dbg(3, vpfe, "BLKCMP: 0x%x\n", vpfe_reg_read(ccdc, VPFE_BLKCMP));
vpfe_dbg(3, vpfe, "COLPTN: 0x%x\n", vpfe_reg_read(ccdc, VPFE_COLPTN));
vpfe_dbg(3, vpfe, "SDOFST: 0x%x\n", vpfe_reg_read(ccdc, VPFE_SDOFST));
vpfe_dbg(3, vpfe, "SYN_MODE: 0x%x\n",
vpfe_reg_read(ccdc, VPFE_SYNMODE));
vpfe_dbg(3, vpfe, "HSIZE_OFF: 0x%x\n",
vpfe_reg_read(ccdc, VPFE_HSIZE_OFF));
vpfe_dbg(3, vpfe, "HORZ_INFO: 0x%x\n",
vpfe_reg_read(ccdc, VPFE_HORZ_INFO));
vpfe_dbg(3, vpfe, "VERT_START: 0x%x\n",
vpfe_reg_read(ccdc, VPFE_VERT_START));
vpfe_dbg(3, vpfe, "VERT_LINES: 0x%x\n",
vpfe_reg_read(ccdc, VPFE_VERT_LINES));
}
static int
vpfe_ccdc_validate_param(struct vpfe_ccdc *ccdc,
struct vpfe_ccdc_config_params_raw *ccdcparam)
{
struct vpfe_device *vpfe = to_vpfe(ccdc);
u8 max_gamma, max_data;
if (!ccdcparam->alaw.enable)
return 0;
max_gamma = ccdc_gamma_width_max_bit(ccdcparam->alaw.gamma_wd);
max_data = ccdc_data_size_max_bit(ccdcparam->data_sz);
if (ccdcparam->alaw.gamma_wd > VPFE_CCDC_GAMMA_BITS_09_0 ||
max_gamma > max_data) {
vpfe_dbg(1, vpfe, "Invalid data line select\n");
return -EINVAL;
}
return 0;
}
static void
vpfe_ccdc_update_raw_params(struct vpfe_ccdc *ccdc,
struct vpfe_ccdc_config_params_raw *raw_params)
{
struct vpfe_ccdc_config_params_raw *config_params =
&ccdc->ccdc_cfg.bayer.config_params;
*config_params = *raw_params;
}
/*
* vpfe_ccdc_restore_defaults()
* This function will write defaults to all CCDC registers
*/
static void vpfe_ccdc_restore_defaults(struct vpfe_ccdc *ccdc)
{
int i;
/* Disable CCDC */
vpfe_pcr_enable(ccdc, 0);
/* set all registers to default value */
for (i = 4; i <= 0x94; i += 4)
vpfe_reg_write(ccdc, 0, i);
vpfe_reg_write(ccdc, VPFE_NO_CULLING, VPFE_CULLING);
vpfe_reg_write(ccdc, VPFE_CCDC_GAMMA_BITS_11_2, VPFE_ALAW);
}
static int vpfe_ccdc_close(struct vpfe_ccdc *ccdc, struct device *dev)
{
struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
u32 dma_cntl, pcr;
pcr = vpfe_reg_read(ccdc, VPFE_PCR);
if (pcr)
vpfe_dbg(1, vpfe, "VPFE_PCR is still set (%x)", pcr);
dma_cntl = vpfe_reg_read(ccdc, VPFE_DMA_CNTL);
if ((dma_cntl & VPFE_DMA_CNTL_OVERFLOW))
vpfe_dbg(1, vpfe, "VPFE_DMA_CNTL_OVERFLOW is still set (%x)",
dma_cntl);
/* Disable CCDC by resetting all register to default POR values */
vpfe_ccdc_restore_defaults(ccdc);
/* Disabled the module at the CONFIG level */
vpfe_config_enable(ccdc, 0);
pm_runtime_put_sync(dev);
return 0;
}
static int vpfe_ccdc_set_params(struct vpfe_ccdc *ccdc, void __user *params)
{
struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
struct vpfe_ccdc_config_params_raw raw_params;
int x;
if (ccdc->ccdc_cfg.if_type != VPFE_RAW_BAYER)
return -EINVAL;
x = copy_from_user(&raw_params, params, sizeof(raw_params));
if (x) {
vpfe_dbg(1, vpfe,
"%s: error in copying ccdc params, %d\n",
__func__, x);
return -EFAULT;
}
if (!vpfe_ccdc_validate_param(ccdc, &raw_params)) {
vpfe_ccdc_update_raw_params(ccdc, &raw_params);
return 0;
}
return -EINVAL;
}
/*
* vpfe_ccdc_config_ycbcr()
* This function will configure CCDC for YCbCr video capture
*/
static void vpfe_ccdc_config_ycbcr(struct vpfe_ccdc *ccdc)
{
struct ccdc_params_ycbcr *params = &ccdc->ccdc_cfg.ycbcr;
u32 syn_mode;
/*
* first restore the CCDC registers to default values
* This is important since we assume default values to be set in
* a lot of registers that we didn't touch
*/
vpfe_ccdc_restore_defaults(ccdc);
/*
* configure pixel format, frame format, configure video frame
* format, enable output to SDRAM, enable internal timing generator
* and 8bit pack mode
*/
syn_mode = (((params->pix_fmt & VPFE_SYN_MODE_INPMOD_MASK) <<
VPFE_SYN_MODE_INPMOD_SHIFT) |
((params->frm_fmt & VPFE_SYN_FLDMODE_MASK) <<
VPFE_SYN_FLDMODE_SHIFT) | VPFE_VDHDEN_ENABLE |
VPFE_WEN_ENABLE | VPFE_DATA_PACK_ENABLE);
/* setup BT.656 sync mode */
if (params->bt656_enable) {
vpfe_reg_write(ccdc, VPFE_REC656IF_BT656_EN, VPFE_REC656IF);
/*
* configure the FID, VD, HD pin polarity,
* fld,hd pol positive, vd negative, 8-bit data
*/
syn_mode |= VPFE_SYN_MODE_VD_POL_NEGATIVE;
if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)
syn_mode |= VPFE_SYN_MODE_10BITS;
else
syn_mode |= VPFE_SYN_MODE_8BITS;
} else {
/* y/c external sync mode */
syn_mode |= (((params->fid_pol & VPFE_FID_POL_MASK) <<
VPFE_FID_POL_SHIFT) |
((params->hd_pol & VPFE_HD_POL_MASK) <<
VPFE_HD_POL_SHIFT) |
((params->vd_pol & VPFE_VD_POL_MASK) <<
VPFE_VD_POL_SHIFT));
}
vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);
/* configure video window */
vpfe_ccdc_setwin(ccdc, &params->win,
params->frm_fmt, params->bytesperpixel);
/*
* configure the order of y cb cr in SDRAM, and disable latch
* internal register on vsync
*/
if (ccdc->ccdc_cfg.if_type == VPFE_BT656_10BIT)
vpfe_reg_write(ccdc,
(params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |
VPFE_LATCH_ON_VSYNC_DISABLE |
VPFE_CCDCFG_BW656_10BIT, VPFE_CCDCFG);
else
vpfe_reg_write(ccdc,
(params->pix_order << VPFE_CCDCFG_Y8POS_SHIFT) |
VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);
/*
* configure the horizontal line offset. This should be a
* on 32 byte boundary. So clear LSB 5 bits
*/
vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);
/* configure the memory line offset */
if (params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED)
/* two fields are interleaved in memory */
vpfe_reg_write(ccdc, VPFE_SDOFST_FIELD_INTERLEAVED,
VPFE_SDOFST);
}
static void
vpfe_ccdc_config_black_clamp(struct vpfe_ccdc *ccdc,
struct vpfe_ccdc_black_clamp *bclamp)
{
u32 val;
if (!bclamp->enable) {
/* configure DCSub */
val = (bclamp->dc_sub) & VPFE_BLK_DC_SUB_MASK;
vpfe_reg_write(ccdc, val, VPFE_DCSUB);
vpfe_reg_write(ccdc, VPFE_CLAMP_DEFAULT_VAL, VPFE_CLAMP);
return;
}
/*
* Configure gain, Start pixel, No of line to be avg,
* No of pixel/line to be avg, & Enable the Black clamping
*/
val = ((bclamp->sgain & VPFE_BLK_SGAIN_MASK) |
((bclamp->start_pixel & VPFE_BLK_ST_PXL_MASK) <<
VPFE_BLK_ST_PXL_SHIFT) |
((bclamp->sample_ln & VPFE_BLK_SAMPLE_LINE_MASK) <<
VPFE_BLK_SAMPLE_LINE_SHIFT) |
((bclamp->sample_pixel & VPFE_BLK_SAMPLE_LN_MASK) <<
VPFE_BLK_SAMPLE_LN_SHIFT) | VPFE_BLK_CLAMP_ENABLE);
vpfe_reg_write(ccdc, val, VPFE_CLAMP);
/* If Black clamping is enable then make dcsub 0 */
vpfe_reg_write(ccdc, VPFE_DCSUB_DEFAULT_VAL, VPFE_DCSUB);
}
static void
vpfe_ccdc_config_black_compense(struct vpfe_ccdc *ccdc,
struct vpfe_ccdc_black_compensation *bcomp)
{
u32 val;
val = ((bcomp->b & VPFE_BLK_COMP_MASK) |
((bcomp->gb & VPFE_BLK_COMP_MASK) <<
VPFE_BLK_COMP_GB_COMP_SHIFT) |
((bcomp->gr & VPFE_BLK_COMP_MASK) <<
VPFE_BLK_COMP_GR_COMP_SHIFT) |
((bcomp->r & VPFE_BLK_COMP_MASK) <<
VPFE_BLK_COMP_R_COMP_SHIFT));
vpfe_reg_write(ccdc, val, VPFE_BLKCMP);
}
/*
* vpfe_ccdc_config_raw()
* This function will configure CCDC for Raw capture mode
*/
static void vpfe_ccdc_config_raw(struct vpfe_ccdc *ccdc)
{
struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
struct vpfe_ccdc_config_params_raw *config_params =
&ccdc->ccdc_cfg.bayer.config_params;
struct ccdc_params_raw *params = &ccdc->ccdc_cfg.bayer;
unsigned int syn_mode;
unsigned int val;
/* Reset CCDC */
vpfe_ccdc_restore_defaults(ccdc);
/* Disable latching function registers on VSYNC */
vpfe_reg_write(ccdc, VPFE_LATCH_ON_VSYNC_DISABLE, VPFE_CCDCFG);
/*
* Configure the vertical sync polarity(SYN_MODE.VDPOL),
* horizontal sync polarity (SYN_MODE.HDPOL), frame id polarity
* (SYN_MODE.FLDPOL), frame format(progressive or interlace),
* data size(SYNMODE.DATSIZ), &pixel format (Input mode), output
* SDRAM, enable internal timing generator
*/
syn_mode = (((params->vd_pol & VPFE_VD_POL_MASK) << VPFE_VD_POL_SHIFT) |
((params->hd_pol & VPFE_HD_POL_MASK) << VPFE_HD_POL_SHIFT) |
((params->fid_pol & VPFE_FID_POL_MASK) <<
VPFE_FID_POL_SHIFT) | ((params->frm_fmt &
VPFE_FRM_FMT_MASK) << VPFE_FRM_FMT_SHIFT) |
((config_params->data_sz & VPFE_DATA_SZ_MASK) <<
VPFE_DATA_SZ_SHIFT) | ((params->pix_fmt &
VPFE_PIX_FMT_MASK) << VPFE_PIX_FMT_SHIFT) |
VPFE_WEN_ENABLE | VPFE_VDHDEN_ENABLE);
/* Enable and configure aLaw register if needed */
if (config_params->alaw.enable) {
val = ((config_params->alaw.gamma_wd &
VPFE_ALAW_GAMMA_WD_MASK) | VPFE_ALAW_ENABLE);
vpfe_reg_write(ccdc, val, VPFE_ALAW);
vpfe_dbg(3, vpfe, "\nWriting 0x%x to ALAW...\n", val);
}
/* Configure video window */
vpfe_ccdc_setwin(ccdc, &params->win, params->frm_fmt,
params->bytesperpixel);
/* Configure Black Clamp */
vpfe_ccdc_config_black_clamp(ccdc, &config_params->blk_clamp);
/* Configure Black level compensation */
vpfe_ccdc_config_black_compense(ccdc, &config_params->blk_comp);
/* If data size is 8 bit then pack the data */
if ((config_params->data_sz == VPFE_CCDC_DATA_8BITS) ||
config_params->alaw.enable)
syn_mode |= VPFE_DATA_PACK_ENABLE;
/*
* Configure Horizontal offset register. If pack 8 is enabled then
* 1 pixel will take 1 byte
*/
vpfe_reg_write(ccdc, params->bytesperline, VPFE_HSIZE_OFF);
vpfe_dbg(3, vpfe, "Writing %d (%x) to HSIZE_OFF\n",
params->bytesperline, params->bytesperline);
/* Set value for SDOFST */
if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
if (params->image_invert_enable) {
/* For interlace inverse mode */
vpfe_reg_write(ccdc, VPFE_INTERLACED_IMAGE_INVERT,
VPFE_SDOFST);
} else {
/* For interlace non inverse mode */
vpfe_reg_write(ccdc, VPFE_INTERLACED_NO_IMAGE_INVERT,
VPFE_SDOFST);
}
} else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
vpfe_reg_write(ccdc, VPFE_PROGRESSIVE_NO_IMAGE_INVERT,
VPFE_SDOFST);
}
vpfe_reg_write(ccdc, syn_mode, VPFE_SYNMODE);
vpfe_reg_dump(ccdc);
}
static inline int
vpfe_ccdc_set_buftype(struct vpfe_ccdc *ccdc,
enum ccdc_buftype buf_type)
{
if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
ccdc->ccdc_cfg.bayer.buf_type = buf_type;
else
ccdc->ccdc_cfg.ycbcr.buf_type = buf_type;
return 0;
}
static inline enum ccdc_buftype vpfe_ccdc_get_buftype(struct vpfe_ccdc *ccdc)
{
if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
return ccdc->ccdc_cfg.bayer.buf_type;
return ccdc->ccdc_cfg.ycbcr.buf_type;
}
static int vpfe_ccdc_set_pixel_format(struct vpfe_ccdc *ccdc, u32 pixfmt)
{
struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
vpfe_dbg(1, vpfe, "%s: if_type: %d, pixfmt:%s\n",
__func__, ccdc->ccdc_cfg.if_type, print_fourcc(pixfmt));
if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
/*
* Need to clear it in case it was left on
* after the last capture.
*/
ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 0;
switch (pixfmt) {
case V4L2_PIX_FMT_SBGGR8:
ccdc->ccdc_cfg.bayer.config_params.alaw.enable = 1;
break;
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_UYVY:
case V4L2_PIX_FMT_YUV420:
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_RGB565X:
break;
case V4L2_PIX_FMT_SBGGR16:
default:
return -EINVAL;
}
} else {
switch (pixfmt) {
case V4L2_PIX_FMT_YUYV:
ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
break;
case V4L2_PIX_FMT_UYVY:
ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
break;
default:
return -EINVAL;
}
}
return 0;
}
static u32 vpfe_ccdc_get_pixel_format(struct vpfe_ccdc *ccdc)
{
u32 pixfmt;
if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
pixfmt = V4L2_PIX_FMT_YUYV;
} else {
if (ccdc->ccdc_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
pixfmt = V4L2_PIX_FMT_YUYV;
else
pixfmt = V4L2_PIX_FMT_UYVY;
}
return pixfmt;
}
static int
vpfe_ccdc_set_image_window(struct vpfe_ccdc *ccdc,
struct v4l2_rect *win, unsigned int bpp)
{
if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER) {
ccdc->ccdc_cfg.bayer.win = *win;
ccdc->ccdc_cfg.bayer.bytesperpixel = bpp;
ccdc->ccdc_cfg.bayer.bytesperline = ALIGN(win->width * bpp, 32);
} else {
ccdc->ccdc_cfg.ycbcr.win = *win;
ccdc->ccdc_cfg.ycbcr.bytesperpixel = bpp;
ccdc->ccdc_cfg.ycbcr.bytesperline = ALIGN(win->width * bpp, 32);
}
return 0;
}
static inline void
vpfe_ccdc_get_image_window(struct vpfe_ccdc *ccdc,
struct v4l2_rect *win)
{
if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
*win = ccdc->ccdc_cfg.bayer.win;
else
*win = ccdc->ccdc_cfg.ycbcr.win;
}
static inline unsigned int vpfe_ccdc_get_line_length(struct vpfe_ccdc *ccdc)
{
if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
return ccdc->ccdc_cfg.bayer.bytesperline;
return ccdc->ccdc_cfg.ycbcr.bytesperline;
}
static inline int
vpfe_ccdc_set_frame_format(struct vpfe_ccdc *ccdc,
enum ccdc_frmfmt frm_fmt)
{
if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
ccdc->ccdc_cfg.bayer.frm_fmt = frm_fmt;
else
ccdc->ccdc_cfg.ycbcr.frm_fmt = frm_fmt;
return 0;
}
static inline enum ccdc_frmfmt
vpfe_ccdc_get_frame_format(struct vpfe_ccdc *ccdc)
{
if (ccdc->ccdc_cfg.if_type == VPFE_RAW_BAYER)
return ccdc->ccdc_cfg.bayer.frm_fmt;
return ccdc->ccdc_cfg.ycbcr.frm_fmt;
}
static inline int vpfe_ccdc_getfid(struct vpfe_ccdc *ccdc)
{
return (vpfe_reg_read(ccdc, VPFE_SYNMODE) >> 15) & 1;
}
static inline void vpfe_set_sdr_addr(struct vpfe_ccdc *ccdc, unsigned long addr)
{
vpfe_reg_write(ccdc, addr & 0xffffffe0, VPFE_SDR_ADDR);
}
static int vpfe_ccdc_set_hw_if_params(struct vpfe_ccdc *ccdc,
struct vpfe_hw_if_param *params)
{
struct vpfe_device *vpfe = container_of(ccdc, struct vpfe_device, ccdc);
ccdc->ccdc_cfg.if_type = params->if_type;
switch (params->if_type) {
case VPFE_BT656:
case VPFE_YCBCR_SYNC_16:
case VPFE_YCBCR_SYNC_8:
case VPFE_BT656_10BIT:
ccdc->ccdc_cfg.ycbcr.vd_pol = params->vdpol;
ccdc->ccdc_cfg.ycbcr.hd_pol = params->hdpol;
break;
case VPFE_RAW_BAYER:
ccdc->ccdc_cfg.bayer.vd_pol = params->vdpol;
ccdc->ccdc_cfg.bayer.hd_pol = params->hdpol;
if (params->bus_width == 10)
ccdc->ccdc_cfg.bayer.config_params.data_sz =
VPFE_CCDC_DATA_10BITS;
else
ccdc->ccdc_cfg.bayer.config_params.data_sz =
VPFE_CCDC_DATA_8BITS;
vpfe_dbg(1, vpfe, "params.bus_width: %d\n",
params->bus_width);
vpfe_dbg(1, vpfe, "config_params.data_sz: %d\n",
ccdc->ccdc_cfg.bayer.config_params.data_sz);
break;
default:
return -EINVAL;
}
return 0;
}
static void vpfe_clear_intr(struct vpfe_ccdc *ccdc, int vdint)
{
unsigned int vpfe_int_status;
vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS);
switch (vdint) {
/* VD0 interrupt */
case VPFE_VDINT0:
vpfe_int_status &= ~VPFE_VDINT0;
vpfe_int_status |= VPFE_VDINT0;
break;
/* VD1 interrupt */
case VPFE_VDINT1:
vpfe_int_status &= ~VPFE_VDINT1;
vpfe_int_status |= VPFE_VDINT1;
break;
/* VD2 interrupt */
case VPFE_VDINT2:
vpfe_int_status &= ~VPFE_VDINT2;
vpfe_int_status |= VPFE_VDINT2;
break;
/* Clear all interrupts */
default:
vpfe_int_status &= ~(VPFE_VDINT0 |
VPFE_VDINT1 |
VPFE_VDINT2);
vpfe_int_status |= (VPFE_VDINT0 |
VPFE_VDINT1 |
VPFE_VDINT2);
break;
}
/* Clear specific VDINT from the status register */
vpfe_reg_write(ccdc, vpfe_int_status, VPFE_IRQ_STS);
vpfe_int_status = vpfe_reg_read(ccdc, VPFE_IRQ_STS);
/* Acknowledge that we are done with all interrupts */
vpfe_reg_write(ccdc, 1, VPFE_IRQ_EOI);
}
static void vpfe_ccdc_config_defaults(struct vpfe_ccdc *ccdc)
{
ccdc->ccdc_cfg.if_type = VPFE_RAW_BAYER;
ccdc->ccdc_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT;
ccdc->ccdc_cfg.ycbcr.frm_fmt = CCDC_FRMFMT_INTERLACED;
ccdc->ccdc_cfg.ycbcr.fid_pol = VPFE_PINPOL_POSITIVE;
ccdc->ccdc_cfg.ycbcr.vd_pol = VPFE_PINPOL_POSITIVE;
ccdc->ccdc_cfg.ycbcr.hd_pol = VPFE_PINPOL_POSITIVE;
ccdc->ccdc_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
ccdc->ccdc_cfg.ycbcr.buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED;
ccdc->ccdc_cfg.ycbcr.win.left = 0;
ccdc->ccdc_cfg.ycbcr.win.top = 0;
ccdc->ccdc_cfg.ycbcr.win.width = 720;
ccdc->ccdc_cfg.ycbcr.win.height = 576;
ccdc->ccdc_cfg.ycbcr.bt656_enable = 1;
ccdc->ccdc_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
ccdc->ccdc_cfg.bayer.frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
ccdc->ccdc_cfg.bayer.fid_pol = VPFE_PINPOL_POSITIVE;
ccdc->ccdc_cfg.bayer.vd_pol = VPFE_PINPOL_POSITIVE;
ccdc->ccdc_cfg.bayer.hd_pol = VPFE_PINPOL_POSITIVE;
ccdc->ccdc_cfg.bayer.win.left = 0;
ccdc->ccdc_cfg.bayer.win.top = 0;
ccdc->ccdc_cfg.bayer.win.width = 800;
ccdc->ccdc_cfg.bayer.win.height = 600;
ccdc->ccdc_cfg.bayer.config_params.data_sz = VPFE_CCDC_DATA_8BITS;
ccdc->ccdc_cfg.bayer.config_params.alaw.gamma_wd =
VPFE_CCDC_GAMMA_BITS_09_0;
}
/*
* vpfe_get_ccdc_image_format - Get image parameters based on CCDC settings
*/
static int vpfe_get_ccdc_image_format(struct vpfe_device *vpfe,
struct v4l2_format *f)
{
struct v4l2_rect image_win;
enum ccdc_buftype buf_type;
enum ccdc_frmfmt frm_fmt;
memset(f, 0, sizeof(*f));
f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win);
f->fmt.pix.width = image_win.width;
f->fmt.pix.height = image_win.height;
f->fmt.pix.bytesperline = vpfe_ccdc_get_line_length(&vpfe->ccdc);
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
f->fmt.pix.height;
buf_type = vpfe_ccdc_get_buftype(&vpfe->ccdc);
f->fmt.pix.pixelformat = vpfe_ccdc_get_pixel_format(&vpfe->ccdc);
frm_fmt = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
if (frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
f->fmt.pix.field = V4L2_FIELD_NONE;
} else if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
if (buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED) {
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
} else if (buf_type == CCDC_BUFTYPE_FLD_SEPARATED) {
f->fmt.pix.field = V4L2_FIELD_SEQ_TB;
} else {
vpfe_err(vpfe, "Invalid buf_type\n");
return -EINVAL;
}
} else {
vpfe_err(vpfe, "Invalid frm_fmt\n");
return -EINVAL;
}
return 0;
}
static int vpfe_config_ccdc_image_format(struct vpfe_device *vpfe)
{
enum ccdc_frmfmt frm_fmt = CCDC_FRMFMT_INTERLACED;
u32 bpp;
int ret = 0;
vpfe_dbg(1, vpfe, "pixelformat: %s\n",
print_fourcc(vpfe->fmt.fmt.pix.pixelformat));
if (vpfe_ccdc_set_pixel_format(&vpfe->ccdc,
vpfe->fmt.fmt.pix.pixelformat) < 0) {
vpfe_err(vpfe, "couldn't set pix format in ccdc\n");
return -EINVAL;
}
/* configure the image window */
bpp = __get_bytesperpixel(vpfe, vpfe->current_vpfe_fmt);
vpfe_ccdc_set_image_window(&vpfe->ccdc, &vpfe->crop, bpp);
switch (vpfe->fmt.fmt.pix.field) {
case V4L2_FIELD_INTERLACED:
/* do nothing, since it is default */
ret = vpfe_ccdc_set_buftype(
&vpfe->ccdc,
CCDC_BUFTYPE_FLD_INTERLEAVED);
break;
case V4L2_FIELD_NONE:
frm_fmt = CCDC_FRMFMT_PROGRESSIVE;
/* buffer type only applicable for interlaced scan */
break;
case V4L2_FIELD_SEQ_TB:
ret = vpfe_ccdc_set_buftype(
&vpfe->ccdc,
CCDC_BUFTYPE_FLD_SEPARATED);
break;
default:
return -EINVAL;
}
if (ret)
return ret;
return vpfe_ccdc_set_frame_format(&vpfe->ccdc, frm_fmt);
}
/*
* vpfe_config_image_format()
* For a given standard, this functions sets up the default
* pix format & crop values in the vpfe device and ccdc. It first
* starts with defaults based values from the standard table.
* It then checks if sub device supports get_fmt and then override the
* values based on that.Sets crop values to match with scan resolution
* starting at 0,0. It calls vpfe_config_ccdc_image_format() set the
* values in ccdc
*/
static int vpfe_config_image_format(struct vpfe_device *vpfe,
v4l2_std_id std_id)
{
struct vpfe_fmt *fmt;
struct v4l2_mbus_framefmt mbus_fmt;
int i, ret;
for (i = 0; i < ARRAY_SIZE(vpfe_standards); i++) {
if (vpfe_standards[i].std_id & std_id) {
vpfe->std_info.active_pixels =
vpfe_standards[i].width;
vpfe->std_info.active_lines =
vpfe_standards[i].height;
vpfe->std_info.frame_format =
vpfe_standards[i].frame_format;
vpfe->std_index = i;
break;
}
}
if (i == ARRAY_SIZE(vpfe_standards)) {
vpfe_err(vpfe, "standard not supported\n");
return -EINVAL;
}
ret = __subdev_get_format(vpfe, &mbus_fmt);
if (ret)
return ret;
fmt = find_format_by_code(vpfe, mbus_fmt.code);
if (!fmt) {
vpfe_dbg(3, vpfe, "mbus code format (0x%08x) not found.\n",
mbus_fmt.code);
return -EINVAL;
}
/* Save current subdev format */
v4l2_fill_pix_format(&vpfe->fmt.fmt.pix, &mbus_fmt);
vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vpfe->fmt.fmt.pix.pixelformat = fmt->fourcc;
vpfe_calc_format_size(vpfe, fmt, &vpfe->fmt);
vpfe->current_vpfe_fmt = fmt;
/* Update the crop window based on found values */
vpfe->crop.top = 0;
vpfe->crop.left = 0;
vpfe->crop.width = mbus_fmt.width;
vpfe->crop.height = mbus_fmt.height;
return vpfe_config_ccdc_image_format(vpfe);
}
static int vpfe_initialize_device(struct vpfe_device *vpfe)
{
struct vpfe_subdev_info *sdinfo;
int ret;
sdinfo = &vpfe->cfg->sub_devs[0];
sdinfo->sd = vpfe->sd[0];
vpfe->current_input = 0;
vpfe->std_index = 0;
/* Configure the default format information */
ret = vpfe_config_image_format(vpfe,
vpfe_standards[vpfe->std_index].std_id);
if (ret)
return ret;
pm_runtime_get_sync(vpfe->pdev);
vpfe_config_enable(&vpfe->ccdc, 1);
vpfe_ccdc_restore_defaults(&vpfe->ccdc);
/* Clear all VPFE interrupts */
vpfe_clear_intr(&vpfe->ccdc, -1);
return ret;
}
/*
* vpfe_release : This function is based on the vb2_fop_release
* helper function.
* It has been augmented to handle module power management,
* by disabling/enabling h/w module fcntl clock when necessary.
*/
static int vpfe_release(struct file *file)
{
struct vpfe_device *vpfe = video_drvdata(file);
bool fh_singular;
int ret;
mutex_lock(&vpfe->lock);
/* Save the singular status before we call the clean-up helper */
fh_singular = v4l2_fh_is_singular_file(file);
/* the release helper will cleanup any on-going streaming */
ret = _vb2_fop_release(file, NULL);
/*
* If this was the last open file.
* Then de-initialize hw module.
*/
if (fh_singular)
vpfe_ccdc_close(&vpfe->ccdc, vpfe->pdev);
mutex_unlock(&vpfe->lock);
return ret;
}
/*
* vpfe_open : This function is based on the v4l2_fh_open helper function.
* It has been augmented to handle module power management,
* by disabling/enabling h/w module fcntl clock when necessary.
*/
static int vpfe_open(struct file *file)
{
struct vpfe_device *vpfe = video_drvdata(file);
int ret;
mutex_lock(&vpfe->lock);
ret = v4l2_fh_open(file);
if (ret) {
vpfe_err(vpfe, "v4l2_fh_open failed\n");
goto unlock;
}
if (!v4l2_fh_is_singular_file(file))
goto unlock;
if (vpfe_initialize_device(vpfe)) {
v4l2_fh_release(file);
ret = -ENODEV;
}
unlock:
mutex_unlock(&vpfe->lock);
return ret;
}
/**
* vpfe_schedule_next_buffer: set next buffer address for capture
* @vpfe : ptr to vpfe device
*
* This function will get next buffer from the dma queue and
* set the buffer address in the vpfe register for capture.
* the buffer is marked active
*/
static void vpfe_schedule_next_buffer(struct vpfe_device *vpfe)
{
dma_addr_t addr;
spin_lock(&vpfe->dma_queue_lock);
if (list_empty(&vpfe->dma_queue)) {
spin_unlock(&vpfe->dma_queue_lock);
return;
}
vpfe->next_frm = list_entry(vpfe->dma_queue.next,
struct vpfe_cap_buffer, list);
list_del(&vpfe->next_frm->list);
spin_unlock(&vpfe->dma_queue_lock);
addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb.vb2_buf, 0);
vpfe_set_sdr_addr(&vpfe->ccdc, addr);
}
static inline void vpfe_schedule_bottom_field(struct vpfe_device *vpfe)
{
dma_addr_t addr;
addr = vb2_dma_contig_plane_dma_addr(&vpfe->next_frm->vb.vb2_buf, 0) +
vpfe->field_off;
vpfe_set_sdr_addr(&vpfe->ccdc, addr);
}
/*
* vpfe_process_buffer_complete: process a completed buffer
* @vpfe : ptr to vpfe device
*
* This function time stamp the buffer and mark it as DONE. It also
* wake up any process waiting on the QUEUE and set the next buffer
* as current
*/
static inline void vpfe_process_buffer_complete(struct vpfe_device *vpfe)
{
vpfe->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
vpfe->cur_frm->vb.field = vpfe->fmt.fmt.pix.field;
vpfe->cur_frm->vb.sequence = vpfe->sequence++;
vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
vpfe->cur_frm = vpfe->next_frm;
}
static void vpfe_handle_interlaced_irq(struct vpfe_device *vpfe,
enum v4l2_field field)
{
int fid;
/* interlaced or TB capture check which field
* we are in hardware
*/
fid = vpfe_ccdc_getfid(&vpfe->ccdc);
/* switch the software maintained field id */
vpfe->field ^= 1;
if (fid == vpfe->field) {
/* we are in-sync here,continue */
if (fid == 0) {
/*
* One frame is just being captured. If the
* next frame is available, release the
* current frame and move on
*/
if (vpfe->cur_frm != vpfe->next_frm)
vpfe_process_buffer_complete(vpfe);
if (vpfe->stopping)
return;
/*
* based on whether the two fields are stored
* interleave or separately in memory,
* reconfigure the CCDC memory address
*/
if (field == V4L2_FIELD_SEQ_TB)
vpfe_schedule_bottom_field(vpfe);
} else {
/*
* if one field is just being captured configure
* the next frame get the next frame from the empty
* queue if no frame is available hold on to the
* current buffer
*/
if (vpfe->cur_frm == vpfe->next_frm)
vpfe_schedule_next_buffer(vpfe);
}
} else if (fid == 0) {
/*
* out of sync. Recover from any hardware out-of-sync.
* May loose one frame
*/
vpfe->field = fid;
}
}
/*
* vpfe_isr : ISR handler for vpfe capture (VINT0)
* @irq: irq number
* @dev_id: dev_id ptr
*
* It changes status of the captured buffer, takes next buffer from the queue
* and sets its address in VPFE registers
*/
static irqreturn_t vpfe_isr(int irq, void *dev)
{
struct vpfe_device *vpfe = (struct vpfe_device *)dev;
enum v4l2_field field = vpfe->fmt.fmt.pix.field;
int intr_status, stopping = vpfe->stopping;
intr_status = vpfe_reg_read(&vpfe->ccdc, VPFE_IRQ_STS);
if (intr_status & VPFE_VDINT0) {
if (field == V4L2_FIELD_NONE) {
if (vpfe->cur_frm != vpfe->next_frm)
vpfe_process_buffer_complete(vpfe);
} else {
vpfe_handle_interlaced_irq(vpfe, field);
}
if (stopping) {
vpfe->stopping = false;
complete(&vpfe->capture_stop);
}
}
if (intr_status & VPFE_VDINT1 && !stopping) {
if (field == V4L2_FIELD_NONE &&
vpfe->cur_frm == vpfe->next_frm)
vpfe_schedule_next_buffer(vpfe);
}
vpfe_clear_intr(&vpfe->ccdc, intr_status);
return IRQ_HANDLED;
}
static inline void vpfe_detach_irq(struct vpfe_device *vpfe)
{
unsigned int intr = VPFE_VDINT0;
enum ccdc_frmfmt frame_format;
frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
intr |= VPFE_VDINT1;
vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_CLR);
}
static inline void vpfe_attach_irq(struct vpfe_device *vpfe)
{
unsigned int intr = VPFE_VDINT0;
enum ccdc_frmfmt frame_format;
frame_format = vpfe_ccdc_get_frame_format(&vpfe->ccdc);
if (frame_format == CCDC_FRMFMT_PROGRESSIVE)
intr |= VPFE_VDINT1;
vpfe_reg_write(&vpfe->ccdc, intr, VPFE_IRQ_EN_SET);
}
static int vpfe_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct vpfe_device *vpfe = video_drvdata(file);
strscpy(cap->driver, VPFE_MODULE_NAME, sizeof(cap->driver));
strscpy(cap->card, "TI AM437x VPFE", sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info),
"platform:%s", vpfe->v4l2_dev.name);
return 0;
}
/* get the format set at output pad of the adjacent subdev */
static int __subdev_get_format(struct vpfe_device *vpfe,
struct v4l2_mbus_framefmt *fmt)
{
struct v4l2_subdev *sd = vpfe->current_subdev->sd;
struct v4l2_subdev_format sd_fmt;
struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
int ret;
sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
sd_fmt.pad = 0;
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sd_fmt);
if (ret)
return ret;
*fmt = *mbus_fmt;
vpfe_dbg(1, vpfe, "%s: %dx%d code:%04X\n", __func__,
fmt->width, fmt->height, fmt->code);
return 0;
}
/* set the format at output pad of the adjacent subdev */
static int __subdev_set_format(struct vpfe_device *vpfe,
struct v4l2_mbus_framefmt *fmt)
{
struct v4l2_subdev *sd = vpfe->current_subdev->sd;
struct v4l2_subdev_format sd_fmt;
struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
int ret;
sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
sd_fmt.pad = 0;
*mbus_fmt = *fmt;
ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sd_fmt);
if (ret)
return ret;
vpfe_dbg(1, vpfe, "%s %dx%d code:%04X\n", __func__,
fmt->width, fmt->height, fmt->code);
return 0;
}
static int vpfe_calc_format_size(struct vpfe_device *vpfe,
const struct vpfe_fmt *fmt,
struct v4l2_format *f)
{
u32 bpp;
if (!fmt) {
vpfe_dbg(3, vpfe, "No vpfe_fmt provided!\n");
return -EINVAL;
}
bpp = __get_bytesperpixel(vpfe, fmt);
/* pitch should be 32 bytes aligned */
f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.width * bpp, 32);
f->fmt.pix.sizeimage = f->fmt.pix.bytesperline *
f->fmt.pix.height;
vpfe_dbg(3, vpfe, "%s: fourcc: %s size: %dx%d bpl:%d img_size:%d\n",
__func__, print_fourcc(f->fmt.pix.pixelformat),
f->fmt.pix.width, f->fmt.pix.height,
f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
return 0;
}
static int vpfe_g_fmt(struct file *file, void *priv,
struct v4l2_format *fmt)
{
struct vpfe_device *vpfe = video_drvdata(file);
*fmt = vpfe->fmt;
return 0;
}
static int vpfe_enum_fmt(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct vpfe_device *vpfe = video_drvdata(file);
struct vpfe_subdev_info *sdinfo;
struct vpfe_fmt *fmt;
sdinfo = vpfe->current_subdev;
if (!sdinfo->sd)
return -EINVAL;
if (f->index >= vpfe->num_active_fmt)
return -EINVAL;
fmt = vpfe->active_fmt[f->index];
f->pixelformat = fmt->fourcc;
vpfe_dbg(1, vpfe, "%s: mbus index: %d code: %x pixelformat: %s\n",
__func__, f->index, fmt->code, print_fourcc(fmt->fourcc));
return 0;
}
static int vpfe_try_fmt(struct file *file, void *priv,
struct v4l2_format *f)
{
struct vpfe_device *vpfe = video_drvdata(file);
struct v4l2_subdev *sd = vpfe->current_subdev->sd;
const struct vpfe_fmt *fmt;
struct v4l2_subdev_frame_size_enum fse;
int ret, found;
fmt = find_format_by_pix(vpfe, f->fmt.pix.pixelformat);
if (!fmt) {
/* default to first entry */
vpfe_dbg(3, vpfe, "Invalid pixel code: %x, default used instead\n",
f->fmt.pix.pixelformat);
fmt = vpfe->active_fmt[0];
f->fmt.pix.pixelformat = fmt->fourcc;
}
f->fmt.pix.field = vpfe->fmt.fmt.pix.field;
/* check for/find a valid width/height */
ret = 0;
found = false;
fse.pad = 0;
fse.code = fmt->code;
fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
for (fse.index = 0; ; fse.index++) {
ret = v4l2_subdev_call(sd, pad, enum_frame_size,
NULL, &fse);
if (ret)
break;
if (f->fmt.pix.width == fse.max_width &&
f->fmt.pix.height == fse.max_height) {
found = true;
break;
} else if (f->fmt.pix.width >= fse.min_width &&
f->fmt.pix.width <= fse.max_width &&
f->fmt.pix.height >= fse.min_height &&
f->fmt.pix.height <= fse.max_height) {
found = true;
break;
}
}
if (!found) {
/* use existing values as default */
f->fmt.pix.width = vpfe->fmt.fmt.pix.width;
f->fmt.pix.height = vpfe->fmt.fmt.pix.height;
}
/*
* Use current colorspace for now, it will get
* updated properly during s_fmt
*/
f->fmt.pix.colorspace = vpfe->fmt.fmt.pix.colorspace;
return vpfe_calc_format_size(vpfe, fmt, f);
}
static int vpfe_s_fmt(struct file *file, void *priv,
struct v4l2_format *fmt)
{
struct vpfe_device *vpfe = video_drvdata(file);
struct vpfe_fmt *f;
struct v4l2_mbus_framefmt mbus_fmt;
int ret;
/* If streaming is started, return error */
if (vb2_is_busy(&vpfe->buffer_queue)) {
vpfe_err(vpfe, "%s device busy\n", __func__);
return -EBUSY;
}
ret = vpfe_try_fmt(file, priv, fmt);
if (ret < 0)
return ret;
f = find_format_by_pix(vpfe, fmt->fmt.pix.pixelformat);
v4l2_fill_mbus_format(&mbus_fmt, &fmt->fmt.pix, f->code);
ret = __subdev_set_format(vpfe, &mbus_fmt);
if (ret)
return ret;
/* Just double check nothing has gone wrong */
if (mbus_fmt.code != f->code) {
vpfe_dbg(3, vpfe,
"%s subdev changed format on us, this should not happen\n",
__func__);
return -EINVAL;
}
v4l2_fill_pix_format(&vpfe->fmt.fmt.pix, &mbus_fmt);
vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
vpfe->fmt.fmt.pix.pixelformat = f->fourcc;
vpfe_calc_format_size(vpfe, f, &vpfe->fmt);
*fmt = vpfe->fmt;
vpfe->current_vpfe_fmt = f;
/* Update the crop window based on found values */
vpfe->crop.width = fmt->fmt.pix.width;
vpfe->crop.height = fmt->fmt.pix.height;
/* set image capture parameters in the ccdc */
return vpfe_config_ccdc_image_format(vpfe);
}
static int vpfe_enum_size(struct file *file, void *priv,
struct v4l2_frmsizeenum *fsize)
{
struct vpfe_device *vpfe = video_drvdata(file);
struct v4l2_subdev_frame_size_enum fse;
struct v4l2_subdev *sd = vpfe->current_subdev->sd;
struct vpfe_fmt *fmt;
int ret;
/* check for valid format */
fmt = find_format_by_pix(vpfe, fsize->pixel_format);
if (!fmt) {
vpfe_dbg(3, vpfe, "Invalid pixel code: %x\n",
fsize->pixel_format);
return -EINVAL;
}
memset(fsize->reserved, 0x0, sizeof(fsize->reserved));
memset(&fse, 0x0, sizeof(fse));
fse.index = fsize->index;
fse.pad = 0;
fse.code = fmt->code;
fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(sd, pad, enum_frame_size, NULL, &fse);
if (ret)
return ret;
vpfe_dbg(1, vpfe, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
__func__, fse.index, fse.code, fse.min_width, fse.max_width,
fse.min_height, fse.max_height);
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
fsize->discrete.width = fse.max_width;
fsize->discrete.height = fse.max_height;
vpfe_dbg(1, vpfe, "%s: index: %d pixformat: %s size: %dx%d\n",
__func__, fsize->index, print_fourcc(fsize->pixel_format),
fsize->discrete.width, fsize->discrete.height);
return 0;
}
/*
* vpfe_get_subdev_input_index - Get subdev index and subdev input index for a
* given app input index
*/
static int
vpfe_get_subdev_input_index(struct vpfe_device *vpfe,
int *subdev_index,
int *subdev_input_index,
int app_input_index)
{
int i, j = 0;
for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
if (app_input_index < (j + 1)) {
*subdev_index = i;
*subdev_input_index = app_input_index - j;
return 0;
}
j++;
}
return -EINVAL;
}
/*
* vpfe_get_app_input - Get app input index for a given subdev input index
* driver stores the input index of the current sub device and translate it
* when application request the current input
*/
static int vpfe_get_app_input_index(struct vpfe_device *vpfe,
int *app_input_index)
{
struct vpfe_config *cfg = vpfe->cfg;
struct vpfe_subdev_info *sdinfo;
struct i2c_client *client;
struct i2c_client *curr_client;
int i, j = 0;
curr_client = v4l2_get_subdevdata(vpfe->current_subdev->sd);
for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
sdinfo = &cfg->sub_devs[i];
client = v4l2_get_subdevdata(sdinfo->sd);
if (client->addr == curr_client->addr &&
client->adapter->nr == curr_client->adapter->nr) {
if (vpfe->current_input >= 1)
return -1;
*app_input_index = j + vpfe->current_input;
return 0;
}
j++;
}
return -EINVAL;
}
static int vpfe_enum_input(struct file *file, void *priv,
struct v4l2_input *inp)
{
struct vpfe_device *vpfe = video_drvdata(file);
struct vpfe_subdev_info *sdinfo;
int subdev, index;
if (vpfe_get_subdev_input_index(vpfe, &subdev, &index,
inp->index) < 0) {
vpfe_dbg(1, vpfe,
"input information not found for the subdev\n");
return -EINVAL;
}
sdinfo = &vpfe->cfg->sub_devs[subdev];
*inp = sdinfo->inputs[index];
return 0;
}
static int vpfe_g_input(struct file *file, void *priv, unsigned int *index)
{
struct vpfe_device *vpfe = video_drvdata(file);
return vpfe_get_app_input_index(vpfe, index);
}
/* Assumes caller is holding vpfe_dev->lock */
static int vpfe_set_input(struct vpfe_device *vpfe, unsigned int index)
{
int subdev_index = 0, inp_index = 0;
struct vpfe_subdev_info *sdinfo;
struct vpfe_route *route;
u32 input, output;
int ret;
/* If streaming is started, return error */
if (vb2_is_busy(&vpfe->buffer_queue)) {
vpfe_err(vpfe, "%s device busy\n", __func__);
return -EBUSY;
}
ret = vpfe_get_subdev_input_index(vpfe,
&subdev_index,
&inp_index,
index);
if (ret < 0) {
vpfe_err(vpfe, "invalid input index: %d\n", index);
goto get_out;
}
sdinfo = &vpfe->cfg->sub_devs[subdev_index];
sdinfo->sd = vpfe->sd[subdev_index];
route = &sdinfo->routes[inp_index];
if (route && sdinfo->can_route) {
input = route->input;
output = route->output;
if (sdinfo->sd) {
ret = v4l2_subdev_call(sdinfo->sd, video,
s_routing, input, output, 0);
if (ret) {
vpfe_err(vpfe, "s_routing failed\n");
ret = -EINVAL;
goto get_out;
}
}
}
vpfe->current_subdev = sdinfo;
if (sdinfo->sd)
vpfe->v4l2_dev.ctrl_handler = sdinfo->sd->ctrl_handler;
vpfe->current_input = index;
vpfe->std_index = 0;
/* set the bus/interface parameter for the sub device in ccdc */
ret = vpfe_ccdc_set_hw_if_params(&vpfe->ccdc, &sdinfo->vpfe_param);
if (ret)
return ret;
/* set the default image parameters in the device */
return vpfe_config_image_format(vpfe,
vpfe_standards[vpfe->std_index].std_id);
get_out:
return ret;
}
static int vpfe_s_input(struct file *file, void *priv, unsigned int index)
{
struct vpfe_device *vpfe = video_drvdata(file);
return vpfe_set_input(vpfe, index);
}
static int vpfe_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
{
struct vpfe_device *vpfe = video_drvdata(file);
struct vpfe_subdev_info *sdinfo;
sdinfo = vpfe->current_subdev;
if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))
return -ENODATA;
/* Call querystd function of decoder device */
return v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
video, querystd, std_id);
}
static int vpfe_s_std(struct file *file, void *priv, v4l2_std_id std_id)
{
struct vpfe_device *vpfe = video_drvdata(file);
struct vpfe_subdev_info *sdinfo;
int ret;
sdinfo = vpfe->current_subdev;
if (!(sdinfo->inputs[0].capabilities & V4L2_IN_CAP_STD))
return -ENODATA;
/* if trying to set the same std then nothing to do */
if (vpfe_standards[vpfe->std_index].std_id == std_id)
return 0;
/* If streaming is started, return error */
if (vb2_is_busy(&vpfe->buffer_queue)) {
vpfe_err(vpfe, "%s device busy\n", __func__);
ret = -EBUSY;
return ret;
}
ret = v4l2_device_call_until_err(&vpfe->v4l2_dev, sdinfo->grp_id,
video, s_std, std_id);
if (ret < 0) {
vpfe_err(vpfe, "Failed to set standard\n");
return ret;
}
ret = vpfe_config_image_format(vpfe, std_id);
return ret;
}
static int vpfe_g_std(struct file *file, void *priv, v4l2_std_id *std_id)
{
struct vpfe_device *vpfe = video_drvdata(file);
struct vpfe_subdev_info *sdinfo;
sdinfo = vpfe->current_subdev;
if (sdinfo->inputs[0].capabilities != V4L2_IN_CAP_STD)
return -ENODATA;
*std_id = vpfe_standards[vpfe->std_index].std_id;
return 0;
}
/*
* vpfe_calculate_offsets : This function calculates buffers offset
* for top and bottom field
*/
static void vpfe_calculate_offsets(struct vpfe_device *vpfe)
{
struct v4l2_rect image_win;
vpfe_ccdc_get_image_window(&vpfe->ccdc, &image_win);
vpfe->field_off = image_win.height * image_win.width;
}
/*
* vpfe_queue_setup - Callback function for buffer setup.
* @vq: vb2_queue ptr
* @nbuffers: ptr to number of buffers requested by application
* @nplanes:: contains number of distinct video planes needed to hold a frame
* @sizes[]: contains the size (in bytes) of each plane.
* @alloc_devs: ptr to allocation context
*
* This callback function is called when reqbuf() is called to adjust
* the buffer count and buffer size
*/
static int vpfe_queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], struct device *alloc_devs[])
{
struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
unsigned size = vpfe->fmt.fmt.pix.sizeimage;
if (vq->num_buffers + *nbuffers < 3)
*nbuffers = 3 - vq->num_buffers;
if (*nplanes) {
if (sizes[0] < size)
return -EINVAL;
size = sizes[0];
}
*nplanes = 1;
sizes[0] = size;
vpfe_dbg(1, vpfe,
"nbuffers=%d, size=%u\n", *nbuffers, sizes[0]);
/* Calculate field offset */
vpfe_calculate_offsets(vpfe);
return 0;
}
/*
* vpfe_buffer_prepare : callback function for buffer prepare
* @vb: ptr to vb2_buffer
*
* This is the callback function for buffer prepare when vb2_qbuf()
* function is called. The buffer is prepared and user space virtual address
* or user address is converted into physical address
*/
static int vpfe_buffer_prepare(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);
vb2_set_plane_payload(vb, 0, vpfe->fmt.fmt.pix.sizeimage);
if (vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0))
return -EINVAL;
vbuf->field = vpfe->fmt.fmt.pix.field;
return 0;
}
/*
* vpfe_buffer_queue : Callback function to add buffer to DMA queue
* @vb: ptr to vb2_buffer
*/
static void vpfe_buffer_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct vpfe_device *vpfe = vb2_get_drv_priv(vb->vb2_queue);
struct vpfe_cap_buffer *buf = to_vpfe_buffer(vbuf);
unsigned long flags = 0;
/* add the buffer to the DMA queue */
spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
list_add_tail(&buf->list, &vpfe->dma_queue);
spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
}
static void vpfe_return_all_buffers(struct vpfe_device *vpfe,
enum vb2_buffer_state state)
{
struct vpfe_cap_buffer *buf, *node;
unsigned long flags;
spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
list_for_each_entry_safe(buf, node, &vpfe->dma_queue, list) {
vb2_buffer_done(&buf->vb.vb2_buf, state);
list_del(&buf->list);
}
if (vpfe->cur_frm)
vb2_buffer_done(&vpfe->cur_frm->vb.vb2_buf, state);
if (vpfe->next_frm && vpfe->next_frm != vpfe->cur_frm)
vb2_buffer_done(&vpfe->next_frm->vb.vb2_buf, state);
vpfe->cur_frm = NULL;
vpfe->next_frm = NULL;
spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
}
/*
* vpfe_start_streaming : Starts the DMA engine for streaming
* @vb: ptr to vb2_buffer
* @count: number of buffers
*/
static int vpfe_start_streaming(struct vb2_queue *vq, unsigned int count)
{
struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
struct vpfe_subdev_info *sdinfo;
unsigned long flags;
unsigned long addr;
int ret;
spin_lock_irqsave(&vpfe->dma_queue_lock, flags);
vpfe->field = 0;
vpfe->sequence = 0;
sdinfo = vpfe->current_subdev;
vpfe_attach_irq(vpfe);
vpfe->stopping = false;
init_completion(&vpfe->capture_stop);
if (vpfe->ccdc.ccdc_cfg.if_type == VPFE_RAW_BAYER)
vpfe_ccdc_config_raw(&vpfe->ccdc);
else
vpfe_ccdc_config_ycbcr(&vpfe->ccdc);
/* Get the next frame from the buffer queue */
vpfe->next_frm = list_entry(vpfe->dma_queue.next,
struct vpfe_cap_buffer, list);
vpfe->cur_frm = vpfe->next_frm;
/* Remove buffer from the buffer queue */
list_del(&vpfe->cur_frm->list);
spin_unlock_irqrestore(&vpfe->dma_queue_lock, flags);
addr = vb2_dma_contig_plane_dma_addr(&vpfe->cur_frm->vb.vb2_buf, 0);
vpfe_set_sdr_addr(&vpfe->ccdc, (unsigned long)(addr));
vpfe_pcr_enable(&vpfe->ccdc, 1);
ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 1);
if (ret < 0) {
vpfe_err(vpfe, "Error in attaching interrupt handle\n");
goto err;
}
return 0;
err:
vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_QUEUED);
vpfe_pcr_enable(&vpfe->ccdc, 0);
return ret;
}
/*
* vpfe_stop_streaming : Stop the DMA engine
* @vq: ptr to vb2_queue
*
* This callback stops the DMA engine and any remaining buffers
* in the DMA queue are released.
*/
static void vpfe_stop_streaming(struct vb2_queue *vq)
{
struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
struct vpfe_subdev_info *sdinfo;
int ret;
vpfe_pcr_enable(&vpfe->ccdc, 0);
/* Wait for the last frame to be captured */
vpfe->stopping = true;
wait_for_completion_timeout(&vpfe->capture_stop,
msecs_to_jiffies(250));
vpfe_detach_irq(vpfe);
sdinfo = vpfe->current_subdev;
ret = v4l2_subdev_call(sdinfo->sd, video, s_stream, 0);
if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
vpfe_dbg(1, vpfe, "stream off failed in subdev\n");
/* release all active buffers */
vpfe_return_all_buffers(vpfe, VB2_BUF_STATE_ERROR);
}
static int vpfe_g_pixelaspect(struct file *file, void *priv,
int type, struct v4l2_fract *f)
{
struct vpfe_device *vpfe = video_drvdata(file);
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
vpfe->std_index >= ARRAY_SIZE(vpfe_standards))
return -EINVAL;
*f = vpfe_standards[vpfe->std_index].pixelaspect;
return 0;
}
static int
vpfe_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
struct vpfe_device *vpfe = video_drvdata(file);
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
vpfe->std_index >= ARRAY_SIZE(vpfe_standards))
return -EINVAL;
switch (s->target) {
case V4L2_SEL_TGT_CROP_BOUNDS:
case V4L2_SEL_TGT_CROP_DEFAULT:
s->r.left = 0;
s->r.top = 0;
s->r.width = vpfe_standards[vpfe->std_index].width;
s->r.height = vpfe_standards[vpfe->std_index].height;
break;
case V4L2_SEL_TGT_CROP:
s->r = vpfe->crop;
break;
default:
return -EINVAL;
}
return 0;
}
static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b)
{
if (a->left < b->left || a->top < b->top)
return 0;
if (a->left + a->width > b->left + b->width)
return 0;
if (a->top + a->height > b->top + b->height)
return 0;
return 1;
}
static int
vpfe_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
struct vpfe_device *vpfe = video_drvdata(file);
struct v4l2_rect cr = vpfe->crop;
struct v4l2_rect r = s->r;
u32 bpp;
/* If streaming is started, return error */
if (vb2_is_busy(&vpfe->buffer_queue)) {
vpfe_err(vpfe, "%s device busy\n", __func__);
return -EBUSY;
}
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
s->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
v4l_bound_align_image(&r.width, 0, cr.width, 0,
&r.height, 0, cr.height, 0, 0);
r.left = clamp_t(unsigned int, r.left, 0, cr.width - r.width);
r.top = clamp_t(unsigned int, r.top, 0, cr.height - r.height);
if (s->flags & V4L2_SEL_FLAG_LE && !enclosed_rectangle(&r, &s->r))
return -ERANGE;
if (s->flags & V4L2_SEL_FLAG_GE && !enclosed_rectangle(&s->r, &r))
return -ERANGE;
s->r = vpfe->crop = r;
bpp = __get_bytesperpixel(vpfe, vpfe->current_vpfe_fmt);
vpfe_ccdc_set_image_window(&vpfe->ccdc, &r, bpp);
vpfe->fmt.fmt.pix.width = r.width;
vpfe->fmt.fmt.pix.height = r.height;
vpfe->fmt.fmt.pix.bytesperline =
vpfe_ccdc_get_line_length(&vpfe->ccdc);
vpfe->fmt.fmt.pix.sizeimage = vpfe->fmt.fmt.pix.bytesperline *
vpfe->fmt.fmt.pix.height;
vpfe_dbg(1, vpfe, "cropped (%d,%d)/%dx%d of %dx%d\n",
r.left, r.top, r.width, r.height, cr.width, cr.height);
return 0;
}
static long vpfe_ioctl_default(struct file *file, void *priv,
bool valid_prio, unsigned int cmd, void *param)
{
struct vpfe_device *vpfe = video_drvdata(file);
int ret;
if (!valid_prio) {
vpfe_err(vpfe, "%s device busy\n", __func__);
return -EBUSY;
}
/* If streaming is started, return error */
if (vb2_is_busy(&vpfe->buffer_queue)) {
vpfe_err(vpfe, "%s device busy\n", __func__);
return -EBUSY;
}
switch (cmd) {
case VIDIOC_AM437X_CCDC_CFG:
ret = vpfe_ccdc_set_params(&vpfe->ccdc, (void __user *)param);
if (ret) {
vpfe_dbg(2, vpfe,
"Error setting parameters in CCDC\n");
return ret;
}
ret = vpfe_get_ccdc_image_format(vpfe,
&vpfe->fmt);
if (ret < 0) {
vpfe_dbg(2, vpfe,
"Invalid image format at CCDC\n");
return ret;
}
break;
default:
ret = -ENOTTY;
break;
}
return ret;
}
static const struct vb2_ops vpfe_video_qops = {
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
.queue_setup = vpfe_queue_setup,
.buf_prepare = vpfe_buffer_prepare,
.buf_queue = vpfe_buffer_queue,
.start_streaming = vpfe_start_streaming,
.stop_streaming = vpfe_stop_streaming,
};
/* vpfe capture driver file operations */
static const struct v4l2_file_operations vpfe_fops = {
.owner = THIS_MODULE,
.open = vpfe_open,
.release = vpfe_release,
.read = vb2_fop_read,
.poll = vb2_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = vb2_fop_mmap,
};
/* vpfe capture ioctl operations */
static const struct v4l2_ioctl_ops vpfe_ioctl_ops = {
.vidioc_querycap = vpfe_querycap,
.vidioc_enum_fmt_vid_cap = vpfe_enum_fmt,
.vidioc_g_fmt_vid_cap = vpfe_g_fmt,
.vidioc_s_fmt_vid_cap = vpfe_s_fmt,
.vidioc_try_fmt_vid_cap = vpfe_try_fmt,
.vidioc_enum_framesizes = vpfe_enum_size,
.vidioc_enum_input = vpfe_enum_input,
.vidioc_g_input = vpfe_g_input,
.vidioc_s_input = vpfe_s_input,
.vidioc_querystd = vpfe_querystd,
.vidioc_s_std = vpfe_s_std,
.vidioc_g_std = vpfe_g_std,
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_create_bufs = vb2_ioctl_create_bufs,
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
.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,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_g_pixelaspect = vpfe_g_pixelaspect,
.vidioc_g_selection = vpfe_g_selection,
.vidioc_s_selection = vpfe_s_selection,
.vidioc_default = vpfe_ioctl_default,
};
static int
vpfe_async_bound(struct v4l2_async_notifier *notifier,
struct v4l2_subdev *subdev,
struct v4l2_async_subdev *asd)
{
struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,
struct vpfe_device, v4l2_dev);
struct v4l2_subdev_mbus_code_enum mbus_code;
struct vpfe_subdev_info *sdinfo;
struct vpfe_fmt *fmt;
int ret = 0;
bool found = false;
int i, j, k;
for (i = 0; i < ARRAY_SIZE(vpfe->cfg->asd); i++) {
if (vpfe->cfg->asd[i]->match.fwnode ==
asd[i].match.fwnode) {
sdinfo = &vpfe->cfg->sub_devs[i];
vpfe->sd[i] = subdev;
vpfe->sd[i]->grp_id = sdinfo->grp_id;
found = true;
break;
}
}
if (!found) {
vpfe_info(vpfe, "sub device (%s) not matched\n", subdev->name);
return -EINVAL;
}
vpfe->video_dev.tvnorms |= sdinfo->inputs[0].std;
vpfe->num_active_fmt = 0;
for (j = 0, i = 0; (ret != -EINVAL); ++j) {
memset(&mbus_code, 0, sizeof(mbus_code));
mbus_code.index = j;
mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
ret = v4l2_subdev_call(subdev, pad, enum_mbus_code,
NULL, &mbus_code);
if (ret)
continue;
vpfe_dbg(3, vpfe,
"subdev %s: code: %04x idx: %d\n",
subdev->name, mbus_code.code, j);
for (k = 0; k < ARRAY_SIZE(formats); k++) {
fmt = &formats[k];
if (mbus_code.code != fmt->code)
continue;
vpfe->active_fmt[i] = fmt;
vpfe_dbg(3, vpfe,
"matched fourcc: %s code: %04x idx: %d\n",
print_fourcc(fmt->fourcc), mbus_code.code, i);
vpfe->num_active_fmt = ++i;
}
}
if (!i) {
vpfe_err(vpfe, "No suitable format reported by subdev %s\n",
subdev->name);
return -EINVAL;
}
return 0;
}
static int vpfe_probe_complete(struct vpfe_device *vpfe)
{
struct video_device *vdev;
struct vb2_queue *q;
int err;
spin_lock_init(&vpfe->dma_queue_lock);
mutex_init(&vpfe->lock);
vpfe->fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
/* set first sub device as current one */
vpfe->current_subdev = &vpfe->cfg->sub_devs[0];
vpfe->v4l2_dev.ctrl_handler = vpfe->sd[0]->ctrl_handler;
err = vpfe_set_input(vpfe, 0);
if (err)
goto probe_out;
/* Initialize videobuf2 queue as per the buffer type */
q = &vpfe->buffer_queue;
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
q->drv_priv = vpfe;
q->ops = &vpfe_video_qops;
q->mem_ops = &vb2_dma_contig_memops;
q->buf_struct_size = sizeof(struct vpfe_cap_buffer);
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
q->lock = &vpfe->lock;
q->min_buffers_needed = 1;
q->dev = vpfe->pdev;
err = vb2_queue_init(q);
if (err) {
vpfe_err(vpfe, "vb2_queue_init() failed\n");
goto probe_out;
}
INIT_LIST_HEAD(&vpfe->dma_queue);
vdev = &vpfe->video_dev;
strscpy(vdev->name, VPFE_MODULE_NAME, sizeof(vdev->name));
vdev->release = video_device_release_empty;
vdev->fops = &vpfe_fops;
vdev->ioctl_ops = &vpfe_ioctl_ops;
vdev->v4l2_dev = &vpfe->v4l2_dev;
vdev->vfl_dir = VFL_DIR_RX;
vdev->queue = q;
vdev->lock = &vpfe->lock;
vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
V4L2_CAP_READWRITE;
video_set_drvdata(vdev, vpfe);
err = video_register_device(&vpfe->video_dev, VFL_TYPE_GRABBER, -1);
if (err) {
vpfe_err(vpfe,
"Unable to register video device.\n");
goto probe_out;
}
return 0;
probe_out:
v4l2_device_unregister(&vpfe->v4l2_dev);
return err;
}
static int vpfe_async_complete(struct v4l2_async_notifier *notifier)
{
struct vpfe_device *vpfe = container_of(notifier->v4l2_dev,
struct vpfe_device, v4l2_dev);
return vpfe_probe_complete(vpfe);
}
static const struct v4l2_async_notifier_operations vpfe_async_ops = {
.bound = vpfe_async_bound,
.complete = vpfe_async_complete,
};
static struct vpfe_config *
vpfe_get_pdata(struct vpfe_device *vpfe)
{
struct device_node *endpoint = NULL;
struct device *dev = vpfe->pdev;
struct vpfe_subdev_info *sdinfo;
struct vpfe_config *pdata;
unsigned int flags;
unsigned int i;
int err;
dev_dbg(dev, "vpfe_get_pdata\n");
v4l2_async_notifier_init(&vpfe->notifier);
if (!IS_ENABLED(CONFIG_OF) || !dev->of_node)
return dev->platform_data;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return NULL;
for (i = 0; ; i++) {
struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
struct device_node *rem;
endpoint = of_graph_get_next_endpoint(dev->of_node, endpoint);
if (!endpoint)
break;
sdinfo = &pdata->sub_devs[i];
sdinfo->grp_id = 0;
/* we only support camera */
sdinfo->inputs[0].index = i;
strscpy(sdinfo->inputs[0].name, "Camera",
sizeof(sdinfo->inputs[0].name));
sdinfo->inputs[0].type = V4L2_INPUT_TYPE_CAMERA;
sdinfo->inputs[0].std = V4L2_STD_ALL;
sdinfo->inputs[0].capabilities = V4L2_IN_CAP_STD;
sdinfo->can_route = 0;
sdinfo->routes = NULL;
of_property_read_u32(endpoint, "ti,am437x-vpfe-interface",
&sdinfo->vpfe_param.if_type);
if (sdinfo->vpfe_param.if_type < 0 ||
sdinfo->vpfe_param.if_type > 4) {
sdinfo->vpfe_param.if_type = VPFE_RAW_BAYER;
}
err = v4l2_fwnode_endpoint_parse(of_fwnode_handle(endpoint),
&bus_cfg);
if (err) {
dev_err(dev, "Could not parse the endpoint\n");
goto cleanup;
}
sdinfo->vpfe_param.bus_width = bus_cfg.bus.parallel.bus_width;
if (sdinfo->vpfe_param.bus_width < 8 ||
sdinfo->vpfe_param.bus_width > 16) {
dev_err(dev, "Invalid bus width.\n");
goto cleanup;
}
flags = bus_cfg.bus.parallel.flags;
if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
sdinfo->vpfe_param.hdpol = 1;
if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
sdinfo->vpfe_param.vdpol = 1;
rem = of_graph_get_remote_port_parent(endpoint);
if (!rem) {
dev_err(dev, "Remote device at %pOF not found\n",
endpoint);
goto cleanup;
}
pdata->asd[i] = v4l2_async_notifier_add_fwnode_subdev(
&vpfe->notifier, of_fwnode_handle(rem),
sizeof(struct v4l2_async_subdev));
of_node_put(rem);
if (IS_ERR(pdata->asd[i]))
goto cleanup;
}
of_node_put(endpoint);
return pdata;
cleanup:
v4l2_async_notifier_cleanup(&vpfe->notifier);
of_node_put(endpoint);
return NULL;
}
/*
* vpfe_probe : This function creates device entries by register
* itself to the V4L2 driver and initializes fields of each
* device objects
*/
static int vpfe_probe(struct platform_device *pdev)
{
struct vpfe_config *vpfe_cfg;
struct vpfe_device *vpfe;
struct vpfe_ccdc *ccdc;
struct resource *res;
int ret;
vpfe = devm_kzalloc(&pdev->dev, sizeof(*vpfe), GFP_KERNEL);
if (!vpfe)
return -ENOMEM;
vpfe->pdev = &pdev->dev;
vpfe_cfg = vpfe_get_pdata(vpfe);
if (!vpfe_cfg) {
dev_err(&pdev->dev, "No platform data\n");
return -EINVAL;
}
vpfe->cfg = vpfe_cfg;
ccdc = &vpfe->ccdc;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
ccdc->ccdc_cfg.base_addr = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(ccdc->ccdc_cfg.base_addr)) {
ret = PTR_ERR(ccdc->ccdc_cfg.base_addr);
goto probe_out_cleanup;
}
ret = platform_get_irq(pdev, 0);
if (ret <= 0) {
ret = -ENODEV;
goto probe_out_cleanup;
}
vpfe->irq = ret;
ret = devm_request_irq(vpfe->pdev, vpfe->irq, vpfe_isr, 0,
"vpfe_capture0", vpfe);
if (ret) {
dev_err(&pdev->dev, "Unable to request interrupt\n");
ret = -EINVAL;
goto probe_out_cleanup;
}
ret = v4l2_device_register(&pdev->dev, &vpfe->v4l2_dev);
if (ret) {
vpfe_err(vpfe,
"Unable to register v4l2 device.\n");
goto probe_out_cleanup;
}
/* set the driver data in platform device */
platform_set_drvdata(pdev, vpfe);
/* Enabling module functional clock */
pm_runtime_enable(&pdev->dev);
/* for now just enable it here instead of waiting for the open */
pm_runtime_get_sync(&pdev->dev);
vpfe_ccdc_config_defaults(ccdc);
pm_runtime_put_sync(&pdev->dev);
vpfe->sd = devm_kcalloc(&pdev->dev,
ARRAY_SIZE(vpfe->cfg->asd),
sizeof(struct v4l2_subdev *),
GFP_KERNEL);
if (!vpfe->sd) {
ret = -ENOMEM;
goto probe_out_v4l2_unregister;
}
vpfe->notifier.ops = &vpfe_async_ops;
ret = v4l2_async_notifier_register(&vpfe->v4l2_dev, &vpfe->notifier);
if (ret) {
vpfe_err(vpfe, "Error registering async notifier\n");
ret = -EINVAL;
goto probe_out_v4l2_unregister;
}
return 0;
probe_out_v4l2_unregister:
v4l2_device_unregister(&vpfe->v4l2_dev);
probe_out_cleanup:
v4l2_async_notifier_cleanup(&vpfe->notifier);
return ret;
}
/*
* vpfe_remove : It un-register device from V4L2 driver
*/
static int vpfe_remove(struct platform_device *pdev)
{
struct vpfe_device *vpfe = platform_get_drvdata(pdev);
pm_runtime_disable(&pdev->dev);
v4l2_async_notifier_unregister(&vpfe->notifier);
v4l2_async_notifier_cleanup(&vpfe->notifier);
v4l2_device_unregister(&vpfe->v4l2_dev);
video_unregister_device(&vpfe->video_dev);
return 0;
}
#ifdef CONFIG_PM_SLEEP
static void vpfe_save_context(struct vpfe_ccdc *ccdc)
{
ccdc->ccdc_ctx[VPFE_PCR >> 2] = vpfe_reg_read(ccdc, VPFE_PCR);
ccdc->ccdc_ctx[VPFE_SYNMODE >> 2] = vpfe_reg_read(ccdc, VPFE_SYNMODE);
ccdc->ccdc_ctx[VPFE_SDOFST >> 2] = vpfe_reg_read(ccdc, VPFE_SDOFST);
ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2] = vpfe_reg_read(ccdc, VPFE_SDR_ADDR);
ccdc->ccdc_ctx[VPFE_CLAMP >> 2] = vpfe_reg_read(ccdc, VPFE_CLAMP);
ccdc->ccdc_ctx[VPFE_DCSUB >> 2] = vpfe_reg_read(ccdc, VPFE_DCSUB);
ccdc->ccdc_ctx[VPFE_COLPTN >> 2] = vpfe_reg_read(ccdc, VPFE_COLPTN);
ccdc->ccdc_ctx[VPFE_BLKCMP >> 2] = vpfe_reg_read(ccdc, VPFE_BLKCMP);
ccdc->ccdc_ctx[VPFE_VDINT >> 2] = vpfe_reg_read(ccdc, VPFE_VDINT);
ccdc->ccdc_ctx[VPFE_ALAW >> 2] = vpfe_reg_read(ccdc, VPFE_ALAW);
ccdc->ccdc_ctx[VPFE_REC656IF >> 2] = vpfe_reg_read(ccdc, VPFE_REC656IF);
ccdc->ccdc_ctx[VPFE_CCDCFG >> 2] = vpfe_reg_read(ccdc, VPFE_CCDCFG);
ccdc->ccdc_ctx[VPFE_CULLING >> 2] = vpfe_reg_read(ccdc, VPFE_CULLING);
ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2] = vpfe_reg_read(ccdc,
VPFE_HD_VD_WID);
ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2] = vpfe_reg_read(ccdc,
VPFE_PIX_LINES);
ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2] = vpfe_reg_read(ccdc,
VPFE_HORZ_INFO);
ccdc->ccdc_ctx[VPFE_VERT_START >> 2] = vpfe_reg_read(ccdc,
VPFE_VERT_START);
ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2] = vpfe_reg_read(ccdc,
VPFE_VERT_LINES);
ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2] = vpfe_reg_read(ccdc,
VPFE_HSIZE_OFF);
}
static int vpfe_suspend(struct device *dev)
{
struct vpfe_device *vpfe = dev_get_drvdata(dev);
struct vpfe_ccdc *ccdc = &vpfe->ccdc;
/* only do full suspend if streaming has started */
if (vb2_start_streaming_called(&vpfe->buffer_queue)) {
pm_runtime_get_sync(dev);
vpfe_config_enable(ccdc, 1);
/* Save VPFE context */
vpfe_save_context(ccdc);
/* Disable CCDC */
vpfe_pcr_enable(ccdc, 0);
vpfe_config_enable(ccdc, 0);
/* Disable both master and slave clock */
pm_runtime_put_sync(dev);
}
/* Select sleep pin state */
pinctrl_pm_select_sleep_state(dev);
return 0;
}
static void vpfe_restore_context(struct vpfe_ccdc *ccdc)
{
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SYNMODE >> 2], VPFE_SYNMODE);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CULLING >> 2], VPFE_CULLING);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDOFST >> 2], VPFE_SDOFST);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_SDR_ADDR >> 2], VPFE_SDR_ADDR);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CLAMP >> 2], VPFE_CLAMP);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_DCSUB >> 2], VPFE_DCSUB);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_COLPTN >> 2], VPFE_COLPTN);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_BLKCMP >> 2], VPFE_BLKCMP);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VDINT >> 2], VPFE_VDINT);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_ALAW >> 2], VPFE_ALAW);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_REC656IF >> 2], VPFE_REC656IF);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_CCDCFG >> 2], VPFE_CCDCFG);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PCR >> 2], VPFE_PCR);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HD_VD_WID >> 2],
VPFE_HD_VD_WID);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_PIX_LINES >> 2],
VPFE_PIX_LINES);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HORZ_INFO >> 2],
VPFE_HORZ_INFO);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_START >> 2],
VPFE_VERT_START);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_VERT_LINES >> 2],
VPFE_VERT_LINES);
vpfe_reg_write(ccdc, ccdc->ccdc_ctx[VPFE_HSIZE_OFF >> 2],
VPFE_HSIZE_OFF);
}
static int vpfe_resume(struct device *dev)
{
struct vpfe_device *vpfe = dev_get_drvdata(dev);
struct vpfe_ccdc *ccdc = &vpfe->ccdc;
/* only do full resume if streaming has started */
if (vb2_start_streaming_called(&vpfe->buffer_queue)) {
/* Enable both master and slave clock */
pm_runtime_get_sync(dev);
vpfe_config_enable(ccdc, 1);
/* Restore VPFE context */
vpfe_restore_context(ccdc);
vpfe_config_enable(ccdc, 0);
pm_runtime_put_sync(dev);
}
/* Select default pin state */
pinctrl_pm_select_default_state(dev);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(vpfe_pm_ops, vpfe_suspend, vpfe_resume);
static const struct of_device_id vpfe_of_match[] = {
{ .compatible = "ti,am437x-vpfe", },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, vpfe_of_match);
static struct platform_driver vpfe_driver = {
.probe = vpfe_probe,
.remove = vpfe_remove,
.driver = {
.name = VPFE_MODULE_NAME,
.pm = &vpfe_pm_ops,
.of_match_table = of_match_ptr(vpfe_of_match),
},
};
module_platform_driver(vpfe_driver);
MODULE_AUTHOR("Texas Instruments");
MODULE_DESCRIPTION("TI AM437x VPFE driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(VPFE_VERSION);
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