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linux_dsm_epyc7002/drivers/media/platform/davinci/isif.c
Wenwen Wang a26ac6c1be media: isif: fix a NULL pointer dereference bug 
In isif_probe(), there is a while loop to get the ISIF base address and
linearization table0 and table1 address. In the loop body, the function
platform_get_resource() is called to get the resource. If
platform_get_resource() returns NULL, the loop is terminated and the
execution goes to 'fail_nobase_res'. Suppose the loop is terminated at the
first iteration because platform_get_resource() returns NULL and the
execution goes to 'fail_nobase_res'. Given that there is another while loop
at 'fail_nobase_res' and i equals to 0, one iteration of the second while
loop will be executed. However, the second while loop does not check the
return value of platform_get_resource(). This can cause a NULL pointer
dereference bug if the return value is a NULL pointer.

This patch avoids the above issue by adding a check in the second while
loop after the call to platform_get_resource().

Signed-off-by: Wenwen Wang <wang6495@umn.edu>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2018-10-09 08:02:52 -04:00

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/*
* Copyright (C) 2008-2009 Texas Instruments Inc
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Image Sensor Interface (ISIF) driver
*
* This driver is for configuring the ISIF IP available on DM365 or any other
* TI SoCs. This is used for capturing yuv or bayer video or image data
* from a decoder or sensor. This IP is similar to the CCDC IP on DM355
* and DM6446, but with enhanced or additional ip blocks. The driver
* configures the ISIF upon commands from the vpfe bridge driver through
* ccdc_hw_device interface.
*
* TODO: 1) Raw bayer parameter settings and bayer capture
* 2) Add support for control ioctl
*/
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/videodev2.h>
#include <linux/err.h>
#include <linux/module.h>
#include <media/davinci/isif.h>
#include <media/davinci/vpss.h>
#include "isif_regs.h"
#include "ccdc_hw_device.h"
/* Defaults for module configuration parameters */
static struct isif_config_params_raw isif_config_defaults = {
.linearize = {
.en = 0,
.corr_shft = ISIF_NO_SHIFT,
.scale_fact = {1, 0},
},
.df_csc = {
.df_or_csc = 0,
.csc = {
.en = 0,
},
},
.dfc = {
.en = 0,
},
.bclamp = {
.en = 0,
},
.gain_offset = {
.gain = {
.r_ye = {1, 0},
.gr_cy = {1, 0},
.gb_g = {1, 0},
.b_mg = {1, 0},
},
},
.culling = {
.hcpat_odd = 0xff,
.hcpat_even = 0xff,
.vcpat = 0xff,
},
.compress = {
.alg = ISIF_ALAW,
},
};
/* ISIF operation configuration */
static struct isif_oper_config {
struct device *dev;
enum vpfe_hw_if_type if_type;
struct isif_ycbcr_config ycbcr;
struct isif_params_raw bayer;
enum isif_data_pack data_pack;
/* ISIF base address */
void __iomem *base_addr;
/* ISIF Linear Table 0 */
void __iomem *linear_tbl0_addr;
/* ISIF Linear Table 1 */
void __iomem *linear_tbl1_addr;
} isif_cfg = {
.ycbcr = {
.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT,
.frm_fmt = CCDC_FRMFMT_INTERLACED,
.win = ISIF_WIN_NTSC,
.fid_pol = VPFE_PINPOL_POSITIVE,
.vd_pol = VPFE_PINPOL_POSITIVE,
.hd_pol = VPFE_PINPOL_POSITIVE,
.pix_order = CCDC_PIXORDER_CBYCRY,
.buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED,
},
.bayer = {
.pix_fmt = CCDC_PIXFMT_RAW,
.frm_fmt = CCDC_FRMFMT_PROGRESSIVE,
.win = ISIF_WIN_VGA,
.fid_pol = VPFE_PINPOL_POSITIVE,
.vd_pol = VPFE_PINPOL_POSITIVE,
.hd_pol = VPFE_PINPOL_POSITIVE,
.gain = {
.r_ye = {1, 0},
.gr_cy = {1, 0},
.gb_g = {1, 0},
.b_mg = {1, 0},
},
.cfa_pat = ISIF_CFA_PAT_MOSAIC,
.data_msb = ISIF_BIT_MSB_11,
.config_params = {
.data_shift = ISIF_NO_SHIFT,
.col_pat_field0 = {
.olop = ISIF_GREEN_BLUE,
.olep = ISIF_BLUE,
.elop = ISIF_RED,
.elep = ISIF_GREEN_RED,
},
.col_pat_field1 = {
.olop = ISIF_GREEN_BLUE,
.olep = ISIF_BLUE,
.elop = ISIF_RED,
.elep = ISIF_GREEN_RED,
},
.test_pat_gen = 0,
},
},
.data_pack = ISIF_DATA_PACK8,
};
/* Raw Bayer formats */
static const u32 isif_raw_bayer_pix_formats[] = {
V4L2_PIX_FMT_SBGGR8, V4L2_PIX_FMT_SBGGR16};
/* Raw YUV formats */
static const u32 isif_raw_yuv_pix_formats[] = {
V4L2_PIX_FMT_UYVY, V4L2_PIX_FMT_YUYV};
/* register access routines */
static inline u32 regr(u32 offset)
{
return __raw_readl(isif_cfg.base_addr + offset);
}
static inline void regw(u32 val, u32 offset)
{
__raw_writel(val, isif_cfg.base_addr + offset);
}
/* reg_modify() - read, modify and write register */
static inline u32 reg_modify(u32 mask, u32 val, u32 offset)
{
u32 new_val = (regr(offset) & ~mask) | (val & mask);
regw(new_val, offset);
return new_val;
}
static inline void regw_lin_tbl(u32 val, u32 offset, int i)
{
if (!i)
__raw_writel(val, isif_cfg.linear_tbl0_addr + offset);
else
__raw_writel(val, isif_cfg.linear_tbl1_addr + offset);
}
static void isif_disable_all_modules(void)
{
/* disable BC */
regw(0, CLAMPCFG);
/* disable vdfc */
regw(0, DFCCTL);
/* disable CSC */
regw(0, CSCCTL);
/* disable linearization */
regw(0, LINCFG0);
/* disable other modules here as they are supported */
}
static void isif_enable(int en)
{
if (!en) {
/* Before disable isif, disable all ISIF modules */
isif_disable_all_modules();
/*
* wait for next VD. Assume lowest scan rate is 12 Hz. So
* 100 msec delay is good enough
*/
msleep(100);
}
reg_modify(ISIF_SYNCEN_VDHDEN_MASK, en, SYNCEN);
}
static void isif_enable_output_to_sdram(int en)
{
reg_modify(ISIF_SYNCEN_WEN_MASK, en << ISIF_SYNCEN_WEN_SHIFT, SYNCEN);
}
static void isif_config_culling(struct isif_cul *cul)
{
u32 val;
/* Horizontal pattern */
val = (cul->hcpat_even << CULL_PAT_EVEN_LINE_SHIFT) | cul->hcpat_odd;
regw(val, CULH);
/* vertical pattern */
regw(cul->vcpat, CULV);
/* LPF */
reg_modify(ISIF_LPF_MASK << ISIF_LPF_SHIFT,
cul->en_lpf << ISIF_LPF_SHIFT, MODESET);
}
static void isif_config_gain_offset(void)
{
struct isif_gain_offsets_adj *gain_off_p =
&isif_cfg.bayer.config_params.gain_offset;
u32 val;
val = (!!gain_off_p->gain_sdram_en << GAIN_SDRAM_EN_SHIFT) |
(!!gain_off_p->gain_ipipe_en << GAIN_IPIPE_EN_SHIFT) |
(!!gain_off_p->gain_h3a_en << GAIN_H3A_EN_SHIFT) |
(!!gain_off_p->offset_sdram_en << OFST_SDRAM_EN_SHIFT) |
(!!gain_off_p->offset_ipipe_en << OFST_IPIPE_EN_SHIFT) |
(!!gain_off_p->offset_h3a_en << OFST_H3A_EN_SHIFT);
reg_modify(GAIN_OFFSET_EN_MASK, val, CGAMMAWD);
val = (gain_off_p->gain.r_ye.integer << GAIN_INTEGER_SHIFT) |
gain_off_p->gain.r_ye.decimal;
regw(val, CRGAIN);
val = (gain_off_p->gain.gr_cy.integer << GAIN_INTEGER_SHIFT) |
gain_off_p->gain.gr_cy.decimal;
regw(val, CGRGAIN);
val = (gain_off_p->gain.gb_g.integer << GAIN_INTEGER_SHIFT) |
gain_off_p->gain.gb_g.decimal;
regw(val, CGBGAIN);
val = (gain_off_p->gain.b_mg.integer << GAIN_INTEGER_SHIFT) |
gain_off_p->gain.b_mg.decimal;
regw(val, CBGAIN);
regw(gain_off_p->offset, COFSTA);
}
static void isif_restore_defaults(void)
{
enum vpss_ccdc_source_sel source = VPSS_CCDCIN;
dev_dbg(isif_cfg.dev, "\nstarting isif_restore_defaults...");
isif_cfg.bayer.config_params = isif_config_defaults;
/* Enable clock to ISIF, IPIPEIF and BL */
vpss_enable_clock(VPSS_CCDC_CLOCK, 1);
vpss_enable_clock(VPSS_IPIPEIF_CLOCK, 1);
vpss_enable_clock(VPSS_BL_CLOCK, 1);
/* Set default offset and gain */
isif_config_gain_offset();
vpss_select_ccdc_source(source);
dev_dbg(isif_cfg.dev, "\nEnd of isif_restore_defaults...");
}
static int isif_open(struct device *device)
{
isif_restore_defaults();
return 0;
}
/* This function will configure the window size to be capture in ISIF reg */
static void isif_setwin(struct v4l2_rect *image_win,
enum ccdc_frmfmt frm_fmt, int ppc)
{
int horz_start, horz_nr_pixels;
int vert_start, vert_nr_lines;
int mid_img = 0;
dev_dbg(isif_cfg.dev, "\nStarting isif_setwin...");
/*
* 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 << (ppc - 1);
horz_nr_pixels = ((image_win->width) << (ppc - 1)) - 1;
/* Writing the horizontal info into the registers */
regw(horz_start & START_PX_HOR_MASK, SPH);
regw(horz_nr_pixels & NUM_PX_HOR_MASK, LNH);
vert_start = image_win->top;
if (frm_fmt == CCDC_FRMFMT_INTERLACED) {
vert_nr_lines = (image_win->height >> 1) - 1;
vert_start >>= 1;
/* To account for VD since line 0 doesn't have any data */
vert_start += 1;
} else {
/* To account for VD since line 0 doesn't have any data */
vert_start += 1;
vert_nr_lines = image_win->height - 1;
/* configure VDINT0 and VDINT1 */
mid_img = vert_start + (image_win->height / 2);
regw(mid_img, VDINT1);
}
regw(0, VDINT0);
regw(vert_start & START_VER_ONE_MASK, SLV0);
regw(vert_start & START_VER_TWO_MASK, SLV1);
regw(vert_nr_lines & NUM_LINES_VER, LNV);
}
static void isif_config_bclamp(struct isif_black_clamp *bc)
{
u32 val;
/*
* DC Offset is always added to image data irrespective of bc enable
* status
*/
regw(bc->dc_offset, CLDCOFST);
if (bc->en) {
val = bc->bc_mode_color << ISIF_BC_MODE_COLOR_SHIFT;
/* Enable BC and horizontal clamp caculation paramaters */
val = val | 1 | (bc->horz.mode << ISIF_HORZ_BC_MODE_SHIFT);
regw(val, CLAMPCFG);
if (bc->horz.mode != ISIF_HORZ_BC_DISABLE) {
/*
* Window count for calculation
* Base window selection
* pixel limit
* Horizontal size of window
* vertical size of the window
* Horizontal start position of the window
* Vertical start position of the window
*/
val = bc->horz.win_count_calc |
((!!bc->horz.base_win_sel_calc) <<
ISIF_HORZ_BC_WIN_SEL_SHIFT) |
((!!bc->horz.clamp_pix_limit) <<
ISIF_HORZ_BC_PIX_LIMIT_SHIFT) |
(bc->horz.win_h_sz_calc <<
ISIF_HORZ_BC_WIN_H_SIZE_SHIFT) |
(bc->horz.win_v_sz_calc <<
ISIF_HORZ_BC_WIN_V_SIZE_SHIFT);
regw(val, CLHWIN0);
regw(bc->horz.win_start_h_calc, CLHWIN1);
regw(bc->horz.win_start_v_calc, CLHWIN2);
}
/* vertical clamp caculation paramaters */
/* Reset clamp value sel for previous line */
val |=
(bc->vert.reset_val_sel << ISIF_VERT_BC_RST_VAL_SEL_SHIFT) |
(bc->vert.line_ave_coef << ISIF_VERT_BC_LINE_AVE_COEF_SHIFT);
regw(val, CLVWIN0);
/* Optical Black horizontal start position */
regw(bc->vert.ob_start_h, CLVWIN1);
/* Optical Black vertical start position */
regw(bc->vert.ob_start_v, CLVWIN2);
/* Optical Black vertical size for calculation */
regw(bc->vert.ob_v_sz_calc, CLVWIN3);
/* Vertical start position for BC subtraction */
regw(bc->vert_start_sub, CLSV);
}
}
static void isif_config_linearization(struct isif_linearize *linearize)
{
u32 val, i;
if (!linearize->en) {
regw(0, LINCFG0);
return;
}
/* shift value for correction & enable linearization (set lsb) */
val = (linearize->corr_shft << ISIF_LIN_CORRSFT_SHIFT) | 1;
regw(val, LINCFG0);
/* Scale factor */
val = ((!!linearize->scale_fact.integer) <<
ISIF_LIN_SCALE_FACT_INTEG_SHIFT) |
linearize->scale_fact.decimal;
regw(val, LINCFG1);
for (i = 0; i < ISIF_LINEAR_TAB_SIZE; i++) {
if (i % 2)
regw_lin_tbl(linearize->table[i], ((i >> 1) << 2), 1);
else
regw_lin_tbl(linearize->table[i], ((i >> 1) << 2), 0);
}
}
static int isif_config_dfc(struct isif_dfc *vdfc)
{
/* initialize retries to loop for max ~ 250 usec */
u32 val, count, retries = loops_per_jiffy / (4000/HZ);
int i;
if (!vdfc->en)
return 0;
/* Correction mode */
val = (vdfc->corr_mode << ISIF_VDFC_CORR_MOD_SHIFT);
/* Correct whole line or partial */
if (vdfc->corr_whole_line)
val |= 1 << ISIF_VDFC_CORR_WHOLE_LN_SHIFT;
/* level shift value */
val |= vdfc->def_level_shift << ISIF_VDFC_LEVEL_SHFT_SHIFT;
regw(val, DFCCTL);
/* Defect saturation level */
regw(vdfc->def_sat_level, VDFSATLV);
regw(vdfc->table[0].pos_vert, DFCMEM0);
regw(vdfc->table[0].pos_horz, DFCMEM1);
if (vdfc->corr_mode == ISIF_VDFC_NORMAL ||
vdfc->corr_mode == ISIF_VDFC_HORZ_INTERPOL_IF_SAT) {
regw(vdfc->table[0].level_at_pos, DFCMEM2);
regw(vdfc->table[0].level_up_pixels, DFCMEM3);
regw(vdfc->table[0].level_low_pixels, DFCMEM4);
}
/* set DFCMARST and set DFCMWR */
val = regr(DFCMEMCTL) | (1 << ISIF_DFCMEMCTL_DFCMARST_SHIFT) | 1;
regw(val, DFCMEMCTL);
count = retries;
while (count && (regr(DFCMEMCTL) & 0x1))
count--;
if (!count) {
dev_dbg(isif_cfg.dev, "defect table write timeout !!!\n");
return -1;
}
for (i = 1; i < vdfc->num_vdefects; i++) {
regw(vdfc->table[i].pos_vert, DFCMEM0);
regw(vdfc->table[i].pos_horz, DFCMEM1);
if (vdfc->corr_mode == ISIF_VDFC_NORMAL ||
vdfc->corr_mode == ISIF_VDFC_HORZ_INTERPOL_IF_SAT) {
regw(vdfc->table[i].level_at_pos, DFCMEM2);
regw(vdfc->table[i].level_up_pixels, DFCMEM3);
regw(vdfc->table[i].level_low_pixels, DFCMEM4);
}
val = regr(DFCMEMCTL);
/* clear DFCMARST and set DFCMWR */
val &= ~BIT(ISIF_DFCMEMCTL_DFCMARST_SHIFT);
val |= 1;
regw(val, DFCMEMCTL);
count = retries;
while (count && (regr(DFCMEMCTL) & 0x1))
count--;
if (!count) {
dev_err(isif_cfg.dev,
"defect table write timeout !!!\n");
return -1;
}
}
if (vdfc->num_vdefects < ISIF_VDFC_TABLE_SIZE) {
/* Extra cycle needed */
regw(0, DFCMEM0);
regw(0x1FFF, DFCMEM1);
regw(1, DFCMEMCTL);
}
/* enable VDFC */
reg_modify((1 << ISIF_VDFC_EN_SHIFT), (1 << ISIF_VDFC_EN_SHIFT),
DFCCTL);
return 0;
}
static void isif_config_csc(struct isif_df_csc *df_csc)
{
u32 val1 = 0, val2 = 0, i;
if (!df_csc->csc.en) {
regw(0, CSCCTL);
return;
}
for (i = 0; i < ISIF_CSC_NUM_COEFF; i++) {
if ((i % 2) == 0) {
/* CSCM - LSB */
val1 = (df_csc->csc.coeff[i].integer <<
ISIF_CSC_COEF_INTEG_SHIFT) |
df_csc->csc.coeff[i].decimal;
} else {
/* CSCM - MSB */
val2 = (df_csc->csc.coeff[i].integer <<
ISIF_CSC_COEF_INTEG_SHIFT) |
df_csc->csc.coeff[i].decimal;
val2 <<= ISIF_CSCM_MSB_SHIFT;
val2 |= val1;
regw(val2, (CSCM0 + ((i - 1) << 1)));
}
}
/* program the active area */
regw(df_csc->start_pix, FMTSPH);
/*
* one extra pixel as required for CSC. Actually number of
* pixel - 1 should be configured in this register. So we
* need to subtract 1 before writing to FMTSPH, but we will
* not do this since csc requires one extra pixel
*/
regw(df_csc->num_pixels, FMTLNH);
regw(df_csc->start_line, FMTSLV);
/*
* one extra line as required for CSC. See reason documented for
* num_pixels
*/
regw(df_csc->num_lines, FMTLNV);
/* Enable CSC */
regw(1, CSCCTL);
}
static int isif_config_raw(void)
{
struct isif_params_raw *params = &isif_cfg.bayer;
struct isif_config_params_raw *module_params =
&isif_cfg.bayer.config_params;
struct vpss_pg_frame_size frame_size;
struct vpss_sync_pol sync;
u32 val;
dev_dbg(isif_cfg.dev, "\nStarting isif_config_raw..\n");
/*
* Configure CCDCFG register:-
* Set CCD Not to swap input since input is RAW data
* Set FID detection function to Latch at V-Sync
* Set WENLOG - isif valid area
* Set TRGSEL
* Set EXTRG
* Packed to 8 or 16 bits
*/
val = ISIF_YCINSWP_RAW | ISIF_CCDCFG_FIDMD_LATCH_VSYNC |
ISIF_CCDCFG_WENLOG_AND | ISIF_CCDCFG_TRGSEL_WEN |
ISIF_CCDCFG_EXTRG_DISABLE | isif_cfg.data_pack;
dev_dbg(isif_cfg.dev, "Writing 0x%x to ...CCDCFG \n", val);
regw(val, CCDCFG);
/*
* Configure the vertical sync polarity(MODESET.VDPOL)
* Configure the horizontal sync polarity (MODESET.HDPOL)
* Configure frame id polarity (MODESET.FLDPOL)
* Configure data polarity
* Configure External WEN Selection
* Configure frame format(progressive or interlace)
* Configure pixel format (Input mode)
* Configure the data shift
*/
val = ISIF_VDHDOUT_INPUT | (params->vd_pol << ISIF_VD_POL_SHIFT) |
(params->hd_pol << ISIF_HD_POL_SHIFT) |
(params->fid_pol << ISIF_FID_POL_SHIFT) |
(ISIF_DATAPOL_NORMAL << ISIF_DATAPOL_SHIFT) |
(ISIF_EXWEN_DISABLE << ISIF_EXWEN_SHIFT) |
(params->frm_fmt << ISIF_FRM_FMT_SHIFT) |
(params->pix_fmt << ISIF_INPUT_SHIFT) |
(params->config_params.data_shift << ISIF_DATASFT_SHIFT);
regw(val, MODESET);
dev_dbg(isif_cfg.dev, "Writing 0x%x to MODESET...\n", val);
/*
* Configure GAMMAWD register
* CFA pattern setting
*/
val = params->cfa_pat << ISIF_GAMMAWD_CFA_SHIFT;
/* Gamma msb */
if (module_params->compress.alg == ISIF_ALAW)
val |= ISIF_ALAW_ENABLE;
val |= (params->data_msb << ISIF_ALAW_GAMMA_WD_SHIFT);
regw(val, CGAMMAWD);
/* Configure DPCM compression settings */
if (module_params->compress.alg == ISIF_DPCM) {
val = BIT(ISIF_DPCM_EN_SHIFT) |
(module_params->compress.pred <<
ISIF_DPCM_PREDICTOR_SHIFT);
}
regw(val, MISC);
/* Configure Gain & Offset */
isif_config_gain_offset();
/* Configure Color pattern */
val = (params->config_params.col_pat_field0.olop) |
(params->config_params.col_pat_field0.olep << 2) |
(params->config_params.col_pat_field0.elop << 4) |
(params->config_params.col_pat_field0.elep << 6) |
(params->config_params.col_pat_field1.olop << 8) |
(params->config_params.col_pat_field1.olep << 10) |
(params->config_params.col_pat_field1.elop << 12) |
(params->config_params.col_pat_field1.elep << 14);
regw(val, CCOLP);
dev_dbg(isif_cfg.dev, "Writing %x to CCOLP ...\n", val);
/* Configure HSIZE register */
val = (!!params->horz_flip_en) << ISIF_HSIZE_FLIP_SHIFT;
/* calculate line offset in 32 bytes based on pack value */
if (isif_cfg.data_pack == ISIF_PACK_8BIT)
val |= ((params->win.width + 31) >> 5);
else if (isif_cfg.data_pack == ISIF_PACK_12BIT)
val |= (((params->win.width +
(params->win.width >> 2)) + 31) >> 5);
else
val |= (((params->win.width * 2) + 31) >> 5);
regw(val, HSIZE);
/* Configure SDOFST register */
if (params->frm_fmt == CCDC_FRMFMT_INTERLACED) {
if (params->image_invert_en) {
/* For interlace inverse mode */
regw(0x4B6D, SDOFST);
dev_dbg(isif_cfg.dev, "Writing 0x4B6D to SDOFST...\n");
} else {
/* For interlace non inverse mode */
regw(0x0B6D, SDOFST);
dev_dbg(isif_cfg.dev, "Writing 0x0B6D to SDOFST...\n");
}
} else if (params->frm_fmt == CCDC_FRMFMT_PROGRESSIVE) {
if (params->image_invert_en) {
/* For progressive inverse mode */
regw(0x4000, SDOFST);
dev_dbg(isif_cfg.dev, "Writing 0x4000 to SDOFST...\n");
} else {
/* For progressive non inverse mode */
regw(0x0000, SDOFST);
dev_dbg(isif_cfg.dev, "Writing 0x0000 to SDOFST...\n");
}
}
/* Configure video window */
isif_setwin(&params->win, params->frm_fmt, 1);
/* Configure Black Clamp */
isif_config_bclamp(&module_params->bclamp);
/* Configure Vertical Defection Pixel Correction */
if (isif_config_dfc(&module_params->dfc) < 0)
return -EFAULT;
if (!module_params->df_csc.df_or_csc)
/* Configure Color Space Conversion */
isif_config_csc(&module_params->df_csc);
isif_config_linearization(&module_params->linearize);
/* Configure Culling */
isif_config_culling(&module_params->culling);
/* Configure horizontal and vertical offsets(DFC,LSC,Gain) */
regw(module_params->horz_offset, DATAHOFST);
regw(module_params->vert_offset, DATAVOFST);
/* Setup test pattern if enabled */
if (params->config_params.test_pat_gen) {
/* Use the HD/VD pol settings from user */
sync.ccdpg_hdpol = params->hd_pol;
sync.ccdpg_vdpol = params->vd_pol;
dm365_vpss_set_sync_pol(sync);
frame_size.hlpfr = isif_cfg.bayer.win.width;
frame_size.pplen = isif_cfg.bayer.win.height;
dm365_vpss_set_pg_frame_size(frame_size);
vpss_select_ccdc_source(VPSS_PGLPBK);
}
dev_dbg(isif_cfg.dev, "\nEnd of isif_config_ycbcr...\n");
return 0;
}
static int isif_set_buftype(enum ccdc_buftype buf_type)
{
if (isif_cfg.if_type == VPFE_RAW_BAYER)
isif_cfg.bayer.buf_type = buf_type;
else
isif_cfg.ycbcr.buf_type = buf_type;
return 0;
}
static enum ccdc_buftype isif_get_buftype(void)
{
if (isif_cfg.if_type == VPFE_RAW_BAYER)
return isif_cfg.bayer.buf_type;
return isif_cfg.ycbcr.buf_type;
}
static int isif_enum_pix(u32 *pix, int i)
{
int ret = -EINVAL;
if (isif_cfg.if_type == VPFE_RAW_BAYER) {
if (i < ARRAY_SIZE(isif_raw_bayer_pix_formats)) {
*pix = isif_raw_bayer_pix_formats[i];
ret = 0;
}
} else {
if (i < ARRAY_SIZE(isif_raw_yuv_pix_formats)) {
*pix = isif_raw_yuv_pix_formats[i];
ret = 0;
}
}
return ret;
}
static int isif_set_pixel_format(unsigned int pixfmt)
{
if (isif_cfg.if_type == VPFE_RAW_BAYER) {
if (pixfmt == V4L2_PIX_FMT_SBGGR8) {
if ((isif_cfg.bayer.config_params.compress.alg !=
ISIF_ALAW) &&
(isif_cfg.bayer.config_params.compress.alg !=
ISIF_DPCM)) {
dev_dbg(isif_cfg.dev,
"Either configure A-Law or DPCM\n");
return -EINVAL;
}
isif_cfg.data_pack = ISIF_PACK_8BIT;
} else if (pixfmt == V4L2_PIX_FMT_SBGGR16) {
isif_cfg.bayer.config_params.compress.alg =
ISIF_NO_COMPRESSION;
isif_cfg.data_pack = ISIF_PACK_16BIT;
} else
return -EINVAL;
isif_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
} else {
if (pixfmt == V4L2_PIX_FMT_YUYV)
isif_cfg.ycbcr.pix_order = CCDC_PIXORDER_YCBYCR;
else if (pixfmt == V4L2_PIX_FMT_UYVY)
isif_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
else
return -EINVAL;
isif_cfg.data_pack = ISIF_PACK_8BIT;
}
return 0;
}
static u32 isif_get_pixel_format(void)
{
u32 pixfmt;
if (isif_cfg.if_type == VPFE_RAW_BAYER)
if (isif_cfg.bayer.config_params.compress.alg == ISIF_ALAW ||
isif_cfg.bayer.config_params.compress.alg == ISIF_DPCM)
pixfmt = V4L2_PIX_FMT_SBGGR8;
else
pixfmt = V4L2_PIX_FMT_SBGGR16;
else {
if (isif_cfg.ycbcr.pix_order == CCDC_PIXORDER_YCBYCR)
pixfmt = V4L2_PIX_FMT_YUYV;
else
pixfmt = V4L2_PIX_FMT_UYVY;
}
return pixfmt;
}
static int isif_set_image_window(struct v4l2_rect *win)
{
if (isif_cfg.if_type == VPFE_RAW_BAYER) {
isif_cfg.bayer.win.top = win->top;
isif_cfg.bayer.win.left = win->left;
isif_cfg.bayer.win.width = win->width;
isif_cfg.bayer.win.height = win->height;
} else {
isif_cfg.ycbcr.win.top = win->top;
isif_cfg.ycbcr.win.left = win->left;
isif_cfg.ycbcr.win.width = win->width;
isif_cfg.ycbcr.win.height = win->height;
}
return 0;
}
static void isif_get_image_window(struct v4l2_rect *win)
{
if (isif_cfg.if_type == VPFE_RAW_BAYER)
*win = isif_cfg.bayer.win;
else
*win = isif_cfg.ycbcr.win;
}
static unsigned int isif_get_line_length(void)
{
unsigned int len;
if (isif_cfg.if_type == VPFE_RAW_BAYER) {
if (isif_cfg.data_pack == ISIF_PACK_8BIT)
len = ((isif_cfg.bayer.win.width));
else if (isif_cfg.data_pack == ISIF_PACK_12BIT)
len = (((isif_cfg.bayer.win.width * 2) +
(isif_cfg.bayer.win.width >> 2)));
else
len = (((isif_cfg.bayer.win.width * 2)));
} else
len = (((isif_cfg.ycbcr.win.width * 2)));
return ALIGN(len, 32);
}
static int isif_set_frame_format(enum ccdc_frmfmt frm_fmt)
{
if (isif_cfg.if_type == VPFE_RAW_BAYER)
isif_cfg.bayer.frm_fmt = frm_fmt;
else
isif_cfg.ycbcr.frm_fmt = frm_fmt;
return 0;
}
static enum ccdc_frmfmt isif_get_frame_format(void)
{
if (isif_cfg.if_type == VPFE_RAW_BAYER)
return isif_cfg.bayer.frm_fmt;
return isif_cfg.ycbcr.frm_fmt;
}
static int isif_getfid(void)
{
return (regr(MODESET) >> 15) & 0x1;
}
/* misc operations */
static void isif_setfbaddr(unsigned long addr)
{
regw((addr >> 21) & 0x07ff, CADU);
regw((addr >> 5) & 0x0ffff, CADL);
}
static int isif_set_hw_if_params(struct vpfe_hw_if_param *params)
{
isif_cfg.if_type = params->if_type;
switch (params->if_type) {
case VPFE_BT656:
case VPFE_BT656_10BIT:
case VPFE_YCBCR_SYNC_8:
isif_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT;
isif_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
break;
case VPFE_BT1120:
case VPFE_YCBCR_SYNC_16:
isif_cfg.ycbcr.pix_fmt = CCDC_PIXFMT_YCBCR_16BIT;
isif_cfg.ycbcr.pix_order = CCDC_PIXORDER_CBYCRY;
break;
case VPFE_RAW_BAYER:
isif_cfg.bayer.pix_fmt = CCDC_PIXFMT_RAW;
break;
default:
dev_dbg(isif_cfg.dev, "Invalid interface type\n");
return -EINVAL;
}
return 0;
}
/* This function will configure ISIF for YCbCr parameters. */
static int isif_config_ycbcr(void)
{
struct isif_ycbcr_config *params = &isif_cfg.ycbcr;
struct vpss_pg_frame_size frame_size;
u32 modeset = 0, ccdcfg = 0;
struct vpss_sync_pol sync;
dev_dbg(isif_cfg.dev, "\nStarting isif_config_ycbcr...");
/* configure pixel format or input mode */
modeset = modeset | (params->pix_fmt << ISIF_INPUT_SHIFT) |
(params->frm_fmt << ISIF_FRM_FMT_SHIFT) |
(params->fid_pol << ISIF_FID_POL_SHIFT) |
(params->hd_pol << ISIF_HD_POL_SHIFT) |
(params->vd_pol << ISIF_VD_POL_SHIFT);
/* pack the data to 8-bit ISIFCFG */
switch (isif_cfg.if_type) {
case VPFE_BT656:
if (params->pix_fmt != CCDC_PIXFMT_YCBCR_8BIT) {
dev_dbg(isif_cfg.dev, "Invalid pix_fmt(input mode)\n");
return -EINVAL;
}
modeset |= (VPFE_PINPOL_NEGATIVE << ISIF_VD_POL_SHIFT);
regw(3, REC656IF);
ccdcfg = ccdcfg | ISIF_DATA_PACK8 | ISIF_YCINSWP_YCBCR;
break;
case VPFE_BT656_10BIT:
if (params->pix_fmt != CCDC_PIXFMT_YCBCR_8BIT) {
dev_dbg(isif_cfg.dev, "Invalid pix_fmt(input mode)\n");
return -EINVAL;
}
/* setup BT.656, embedded sync */
regw(3, REC656IF);
/* enable 10 bit mode in ccdcfg */
ccdcfg = ccdcfg | ISIF_DATA_PACK8 | ISIF_YCINSWP_YCBCR |
ISIF_BW656_ENABLE;
break;
case VPFE_BT1120:
if (params->pix_fmt != CCDC_PIXFMT_YCBCR_16BIT) {
dev_dbg(isif_cfg.dev, "Invalid pix_fmt(input mode)\n");
return -EINVAL;
}
regw(3, REC656IF);
break;
case VPFE_YCBCR_SYNC_8:
ccdcfg |= ISIF_DATA_PACK8;
ccdcfg |= ISIF_YCINSWP_YCBCR;
if (params->pix_fmt != CCDC_PIXFMT_YCBCR_8BIT) {
dev_dbg(isif_cfg.dev, "Invalid pix_fmt(input mode)\n");
return -EINVAL;
}
break;
case VPFE_YCBCR_SYNC_16:
if (params->pix_fmt != CCDC_PIXFMT_YCBCR_16BIT) {
dev_dbg(isif_cfg.dev, "Invalid pix_fmt(input mode)\n");
return -EINVAL;
}
break;
default:
/* should never come here */
dev_dbg(isif_cfg.dev, "Invalid interface type\n");
return -EINVAL;
}
regw(modeset, MODESET);
/* Set up pix order */
ccdcfg |= params->pix_order << ISIF_PIX_ORDER_SHIFT;
regw(ccdcfg, CCDCFG);
/* configure video window */
if ((isif_cfg.if_type == VPFE_BT1120) ||
(isif_cfg.if_type == VPFE_YCBCR_SYNC_16))
isif_setwin(&params->win, params->frm_fmt, 1);
else
isif_setwin(&params->win, params->frm_fmt, 2);
/*
* configure the horizontal line offset
* this is done by rounding up width to a multiple of 16 pixels
* and multiply by two to account for y:cb:cr 4:2:2 data
*/
regw(((((params->win.width * 2) + 31) & 0xffffffe0) >> 5), HSIZE);
/* configure the memory line offset */
if ((params->frm_fmt == CCDC_FRMFMT_INTERLACED) &&
(params->buf_type == CCDC_BUFTYPE_FLD_INTERLEAVED))
/* two fields are interleaved in memory */
regw(0x00000249, SDOFST);
/* Setup test pattern if enabled */
if (isif_cfg.bayer.config_params.test_pat_gen) {
sync.ccdpg_hdpol = params->hd_pol;
sync.ccdpg_vdpol = params->vd_pol;
dm365_vpss_set_sync_pol(sync);
dm365_vpss_set_pg_frame_size(frame_size);
}
return 0;
}
static int isif_configure(void)
{
if (isif_cfg.if_type == VPFE_RAW_BAYER)
return isif_config_raw();
return isif_config_ycbcr();
}
static int isif_close(struct device *device)
{
/* copy defaults to module params */
isif_cfg.bayer.config_params = isif_config_defaults;
return 0;
}
static const struct ccdc_hw_device isif_hw_dev = {
.name = "ISIF",
.owner = THIS_MODULE,
.hw_ops = {
.open = isif_open,
.close = isif_close,
.enable = isif_enable,
.enable_out_to_sdram = isif_enable_output_to_sdram,
.set_hw_if_params = isif_set_hw_if_params,
.configure = isif_configure,
.set_buftype = isif_set_buftype,
.get_buftype = isif_get_buftype,
.enum_pix = isif_enum_pix,
.set_pixel_format = isif_set_pixel_format,
.get_pixel_format = isif_get_pixel_format,
.set_frame_format = isif_set_frame_format,
.get_frame_format = isif_get_frame_format,
.set_image_window = isif_set_image_window,
.get_image_window = isif_get_image_window,
.get_line_length = isif_get_line_length,
.setfbaddr = isif_setfbaddr,
.getfid = isif_getfid,
},
};
static int isif_probe(struct platform_device *pdev)
{
void (*setup_pinmux)(void);
struct resource *res;
void __iomem *addr;
int status = 0, i;
/* Platform data holds setup_pinmux function ptr */
if (!pdev->dev.platform_data)
return -ENODEV;
/*
* first try to register with vpfe. If not correct platform, then we
* don't have to iomap
*/
status = vpfe_register_ccdc_device(&isif_hw_dev);
if (status < 0)
return status;
setup_pinmux = pdev->dev.platform_data;
/*
* setup Mux configuration for ccdc which may be different for
* different SoCs using this CCDC
*/
setup_pinmux();
i = 0;
/* Get the ISIF base address, linearization table0 and table1 addr. */
while (i < 3) {
res = platform_get_resource(pdev, IORESOURCE_MEM, i);
if (!res) {
status = -ENODEV;
goto fail_nobase_res;
}
res = request_mem_region(res->start, resource_size(res),
res->name);
if (!res) {
status = -EBUSY;
goto fail_nobase_res;
}
addr = ioremap_nocache(res->start, resource_size(res));
if (!addr) {
status = -ENOMEM;
goto fail_base_iomap;
}
switch (i) {
case 0:
/* ISIF base address */
isif_cfg.base_addr = addr;
break;
case 1:
/* ISIF linear tbl0 address */
isif_cfg.linear_tbl0_addr = addr;
break;
default:
/* ISIF linear tbl0 address */
isif_cfg.linear_tbl1_addr = addr;
break;
}
i++;
}
isif_cfg.dev = &pdev->dev;
printk(KERN_NOTICE "%s is registered with vpfe.\n",
isif_hw_dev.name);
return 0;
fail_base_iomap:
release_mem_region(res->start, resource_size(res));
i--;
fail_nobase_res:
if (isif_cfg.base_addr)
iounmap(isif_cfg.base_addr);
if (isif_cfg.linear_tbl0_addr)
iounmap(isif_cfg.linear_tbl0_addr);
while (i >= 0) {
res = platform_get_resource(pdev, IORESOURCE_MEM, i);
if (res)
release_mem_region(res->start, resource_size(res));
i--;
}
vpfe_unregister_ccdc_device(&isif_hw_dev);
return status;
}
static int isif_remove(struct platform_device *pdev)
{
struct resource *res;
int i = 0;
iounmap(isif_cfg.base_addr);
iounmap(isif_cfg.linear_tbl0_addr);
iounmap(isif_cfg.linear_tbl1_addr);
while (i < 3) {
res = platform_get_resource(pdev, IORESOURCE_MEM, i);
if (res)
release_mem_region(res->start, resource_size(res));
i++;
}
vpfe_unregister_ccdc_device(&isif_hw_dev);
return 0;
}
static struct platform_driver isif_driver = {
.driver = {
.name = "isif",
},
.remove = isif_remove,
.probe = isif_probe,
};
module_platform_driver(isif_driver);
MODULE_LICENSE("GPL");
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