// SPDX-License-Identifier: GPL-2.0-only
/*
* isppreview.c
*
* TI OMAP3 ISP driver - Preview module
*
* Copyright (C) 2010 Nokia Corporation
* Copyright (C) 2009 Texas Instruments, Inc.
*
* Contacts: Laurent Pinchart <[email protected]>
* Sakari Ailus <[email protected]>
*/
#include <linux/device.h>
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/uaccess.h>
#include "isp.h"
#include "ispreg.h"
#include "isppreview.h"
/* Default values in Office Fluorescent Light for RGBtoRGB Blending */
static const struct omap3isp_prev_rgbtorgb flr_rgb2rgb = {
{ /* RGB-RGB Matrix */
{0x01E2, 0x0F30, 0x0FEE},
{0x0F9B, 0x01AC, 0x0FB9},
{0x0FE0, 0x0EC0, 0x0260}
}, /* RGB Offset */
{0x0000, 0x0000, 0x0000}
};
/* Default values in Office Fluorescent Light for RGB to YUV Conversion*/
static const struct omap3isp_prev_csc flr_prev_csc = {
{ /* CSC Coef Matrix */
{66, 129, 25},
{-38, -75, 112},
{112, -94 , -18}
}, /* CSC Offset */
{0x0, 0x0, 0x0}
};
/* Default values in Office Fluorescent Light for CFA Gradient*/
#define FLR_CFA_GRADTHRS_HORZ 0x28
#define FLR_CFA_GRADTHRS_VERT 0x28
/* Default values in Office Fluorescent Light for Chroma Suppression*/
#define FLR_CSUP_GAIN 0x0D
#define FLR_CSUP_THRES 0xEB
/* Default values in Office Fluorescent Light for Noise Filter*/
#define FLR_NF_STRGTH 0x03
/* Default values for White Balance */
#define FLR_WBAL_DGAIN 0x100
#define FLR_WBAL_COEF 0x20
/* Default values in Office Fluorescent Light for Black Adjustment*/
#define FLR_BLKADJ_BLUE 0x0
#define FLR_BLKADJ_GREEN 0x0
#define FLR_BLKADJ_RED 0x0
#define DEF_DETECT_CORRECT_VAL 0xe
/*
* Margins and image size limits.
*
* The preview engine crops several rows and columns internally depending on
* which filters are enabled. To avoid format changes when the filters are
* enabled or disabled (which would prevent them from being turned on or off
* during streaming), the driver assumes all filters that can be configured
* during streaming are enabled when computing sink crop and source format
* limits.
*
* If a filter is disabled, additional cropping is automatically added at the
* preview engine input by the driver to avoid overflow at line and frame end.
* This is completely transparent for applications.
*
* Median filter 4 pixels
* Noise filter,
* Faulty pixels correction 4 pixels, 4 lines
* Color suppression 2 pixels
* or luma enhancement
* -------------------------------------------------------------
* Maximum total 10 pixels, 4 lines
*
* The color suppression and luma enhancement filters are applied after bayer to
* YUV conversion. They thus can crop one pixel on the left and one pixel on the
* right side of the image without changing the color pattern. When both those
* filters are disabled, the driver must crop the two pixels on the same side of
* the image to avoid changing the bayer pattern. The left margin is thus set to
* 6 pixels and the right margin to 4 pixels.
*/
#define PREV_MARGIN_LEFT 6
#define PREV_MARGIN_RIGHT 4
#define PREV_MARGIN_TOP 2
#define PREV_MARGIN_BOTTOM 2
#define PREV_MIN_IN_WIDTH 64
#define PREV_MIN_IN_HEIGHT 8
#define PREV_MAX_IN_HEIGHT 16384
#define PREV_MIN_OUT_WIDTH 0
#define PREV_MIN_OUT_HEIGHT 0
#define PREV_MAX_OUT_WIDTH_REV_1 1280
#define PREV_MAX_OUT_WIDTH_REV_2 3300
#define PREV_MAX_OUT_WIDTH_REV_15 4096
/*
* Coefficient Tables for the submodules in Preview.
* Array is initialised with the values from.the tables text file.
*/
/*
* CFA Filter Coefficient Table
*
*/
static u32 cfa_coef_table[4][OMAP3ISP_PREV_CFA_BLK_SIZE] = {
#include "cfa_coef_table.h"
};
/*
* Default Gamma Correction Table - All components
*/
static u32 gamma_table[] = {
#include "gamma_table.h"
};
/*
* Noise Filter Threshold table
*/
static u32 noise_filter_table[] = {
#include "noise_filter_table.h"
};
/*
* Luminance Enhancement Table
*/
static u32 luma_enhance_table[] = {
#include "luma_enhance_table.h"
};
/*
* preview_config_luma_enhancement - Configure the Luminance Enhancement table
*/
static void
preview_config_luma_enhancement(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_luma *yt = ¶ms->luma;
unsigned int i;
isp_reg_writel(isp, ISPPRV_YENH_TABLE_ADDR,
OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
for (i = 0; i < OMAP3ISP_PREV_YENH_TBL_SIZE; i++) {
isp_reg_writel(isp, yt->table[i],
OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
}
}
/*
* preview_enable_luma_enhancement - Enable/disable Luminance Enhancement
*/
static void
preview_enable_luma_enhancement(struct isp_prev_device *prev, bool enable)
{
struct isp_device *isp = to_isp_device(prev);
if (enable)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_YNENHEN);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_YNENHEN);
}
/*
* preview_enable_invalaw - Enable/disable Inverse A-Law decompression
*/
static void preview_enable_invalaw(struct isp_prev_device *prev, bool enable)
{
struct isp_device *isp = to_isp_device(prev);
if (enable)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_INVALAW);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_INVALAW);
}
/*
* preview_config_hmed - Configure the Horizontal Median Filter
*/
static void preview_config_hmed(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_hmed *hmed = ¶ms->hmed;
isp_reg_writel(isp, (hmed->odddist == 1 ? 0 : ISPPRV_HMED_ODDDIST) |
(hmed->evendist == 1 ? 0 : ISPPRV_HMED_EVENDIST) |
(hmed->thres << ISPPRV_HMED_THRESHOLD_SHIFT),
OMAP3_ISP_IOMEM_PREV, ISPPRV_HMED);
}
/*
* preview_enable_hmed - Enable/disable the Horizontal Median Filter
*/
static void preview_enable_hmed(struct isp_prev_device *prev, bool enable)
{
struct isp_device *isp = to_isp_device(prev);
if (enable)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_HMEDEN);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_HMEDEN);
}
/*
* preview_config_cfa - Configure CFA Interpolation for Bayer formats
*
* The CFA table is organised in four blocks, one per Bayer component. The
* hardware expects blocks to follow the Bayer order of the input data, while
* the driver stores the table in GRBG order in memory. The blocks need to be
* reordered to support non-GRBG Bayer patterns.
*/
static void preview_config_cfa(struct isp_prev_device *prev,
const struct prev_params *params)
{
static const unsigned int cfa_coef_order[4][4] = {
{ 0, 1, 2, 3 }, /* GRBG */
{ 1, 0, 3, 2 }, /* RGGB */
{ 2, 3, 0, 1 }, /* BGGR */
{ 3, 2, 1, 0 }, /* GBRG */
};
const unsigned int *order = cfa_coef_order[prev->params.cfa_order];
const struct omap3isp_prev_cfa *cfa = ¶ms->cfa;
struct isp_device *isp = to_isp_device(prev);
unsigned int i;
unsigned int j;
isp_reg_writel(isp,
(cfa->gradthrs_vert << ISPPRV_CFA_GRADTH_VER_SHIFT) |
(cfa->gradthrs_horz << ISPPRV_CFA_GRADTH_HOR_SHIFT),
OMAP3_ISP_IOMEM_PREV, ISPPRV_CFA);
isp_reg_writel(isp, ISPPRV_CFA_TABLE_ADDR,
OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
for (i = 0; i < 4; ++i) {
const __u32 *block = cfa->table[order[i]];
for (j = 0; j < OMAP3ISP_PREV_CFA_BLK_SIZE; ++j)
isp_reg_writel(isp, block[j], OMAP3_ISP_IOMEM_PREV,
ISPPRV_SET_TBL_DATA);
}
}
/*
* preview_config_chroma_suppression - Configure Chroma Suppression
*/
static void
preview_config_chroma_suppression(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_csup *cs = ¶ms->csup;
isp_reg_writel(isp,
cs->gain | (cs->thres << ISPPRV_CSUP_THRES_SHIFT) |
(cs->hypf_en << ISPPRV_CSUP_HPYF_SHIFT),
OMAP3_ISP_IOMEM_PREV, ISPPRV_CSUP);
}
/*
* preview_enable_chroma_suppression - Enable/disable Chrominance Suppression
*/
static void
preview_enable_chroma_suppression(struct isp_prev_device *prev, bool enable)
{
struct isp_device *isp = to_isp_device(prev);
if (enable)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_SUPEN);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_SUPEN);
}
/*
* preview_config_whitebalance - Configure White Balance parameters
*
* Coefficient matrix always with default values.
*/
static void
preview_config_whitebalance(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_wbal *wbal = ¶ms->wbal;
u32 val;
isp_reg_writel(isp, wbal->dgain, OMAP3_ISP_IOMEM_PREV, ISPPRV_WB_DGAIN);
val = wbal->coef0 << ISPPRV_WBGAIN_COEF0_SHIFT;
val |= wbal->coef1 << ISPPRV_WBGAIN_COEF1_SHIFT;
val |= wbal->coef2 << ISPPRV_WBGAIN_COEF2_SHIFT;
val |= wbal->coef3 << ISPPRV_WBGAIN_COEF3_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_WBGAIN);
isp_reg_writel(isp,
ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N0_0_SHIFT |
ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N0_1_SHIFT |
ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N0_2_SHIFT |
ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N0_3_SHIFT |
ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N1_0_SHIFT |
ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N1_1_SHIFT |
ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N1_2_SHIFT |
ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N1_3_SHIFT |
ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N2_0_SHIFT |
ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N2_1_SHIFT |
ISPPRV_WBSEL_COEF0 << ISPPRV_WBSEL_N2_2_SHIFT |
ISPPRV_WBSEL_COEF1 << ISPPRV_WBSEL_N2_3_SHIFT |
ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N3_0_SHIFT |
ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N3_1_SHIFT |
ISPPRV_WBSEL_COEF2 << ISPPRV_WBSEL_N3_2_SHIFT |
ISPPRV_WBSEL_COEF3 << ISPPRV_WBSEL_N3_3_SHIFT,
OMAP3_ISP_IOMEM_PREV, ISPPRV_WBSEL);
}
/*
* preview_config_blkadj - Configure Black Adjustment
*/
static void
preview_config_blkadj(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_blkadj *blkadj = ¶ms->blkadj;
isp_reg_writel(isp, (blkadj->blue << ISPPRV_BLKADJOFF_B_SHIFT) |
(blkadj->green << ISPPRV_BLKADJOFF_G_SHIFT) |
(blkadj->red << ISPPRV_BLKADJOFF_R_SHIFT),
OMAP3_ISP_IOMEM_PREV, ISPPRV_BLKADJOFF);
}
/*
* preview_config_rgb_blending - Configure RGB-RGB Blending
*/
static void
preview_config_rgb_blending(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_rgbtorgb *rgbrgb = ¶ms->rgb2rgb;
u32 val;
val = (rgbrgb->matrix[0][0] & 0xfff) << ISPPRV_RGB_MAT1_MTX_RR_SHIFT;
val |= (rgbrgb->matrix[0][1] & 0xfff) << ISPPRV_RGB_MAT1_MTX_GR_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT1);
val = (rgbrgb->matrix[0][2] & 0xfff) << ISPPRV_RGB_MAT2_MTX_BR_SHIFT;
val |= (rgbrgb->matrix[1][0] & 0xfff) << ISPPRV_RGB_MAT2_MTX_RG_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT2);
val = (rgbrgb->matrix[1][1] & 0xfff) << ISPPRV_RGB_MAT3_MTX_GG_SHIFT;
val |= (rgbrgb->matrix[1][2] & 0xfff) << ISPPRV_RGB_MAT3_MTX_BG_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT3);
val = (rgbrgb->matrix[2][0] & 0xfff) << ISPPRV_RGB_MAT4_MTX_RB_SHIFT;
val |= (rgbrgb->matrix[2][1] & 0xfff) << ISPPRV_RGB_MAT4_MTX_GB_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT4);
val = (rgbrgb->matrix[2][2] & 0xfff) << ISPPRV_RGB_MAT5_MTX_BB_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_MAT5);
val = (rgbrgb->offset[0] & 0x3ff) << ISPPRV_RGB_OFF1_MTX_OFFR_SHIFT;
val |= (rgbrgb->offset[1] & 0x3ff) << ISPPRV_RGB_OFF1_MTX_OFFG_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF1);
val = (rgbrgb->offset[2] & 0x3ff) << ISPPRV_RGB_OFF2_MTX_OFFB_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_RGB_OFF2);
}
/*
* preview_config_csc - Configure Color Space Conversion (RGB to YCbYCr)
*/
static void
preview_config_csc(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_csc *csc = ¶ms->csc;
u32 val;
val = (csc->matrix[0][0] & 0x3ff) << ISPPRV_CSC0_RY_SHIFT;
val |= (csc->matrix[0][1] & 0x3ff) << ISPPRV_CSC0_GY_SHIFT;
val |= (csc->matrix[0][2] & 0x3ff) << ISPPRV_CSC0_BY_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC0);
val = (csc->matrix[1][0] & 0x3ff) << ISPPRV_CSC1_RCB_SHIFT;
val |= (csc->matrix[1][1] & 0x3ff) << ISPPRV_CSC1_GCB_SHIFT;
val |= (csc->matrix[1][2] & 0x3ff) << ISPPRV_CSC1_BCB_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC1);
val = (csc->matrix[2][0] & 0x3ff) << ISPPRV_CSC2_RCR_SHIFT;
val |= (csc->matrix[2][1] & 0x3ff) << ISPPRV_CSC2_GCR_SHIFT;
val |= (csc->matrix[2][2] & 0x3ff) << ISPPRV_CSC2_BCR_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC2);
val = (csc->offset[0] & 0xff) << ISPPRV_CSC_OFFSET_Y_SHIFT;
val |= (csc->offset[1] & 0xff) << ISPPRV_CSC_OFFSET_CB_SHIFT;
val |= (csc->offset[2] & 0xff) << ISPPRV_CSC_OFFSET_CR_SHIFT;
isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_PREV, ISPPRV_CSC_OFFSET);
}
/*
* preview_config_yc_range - Configure the max and min Y and C values
*/
static void
preview_config_yc_range(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_yclimit *yc = ¶ms->yclimit;
isp_reg_writel(isp,
yc->maxC << ISPPRV_SETUP_YC_MAXC_SHIFT |
yc->maxY << ISPPRV_SETUP_YC_MAXY_SHIFT |
yc->minC << ISPPRV_SETUP_YC_MINC_SHIFT |
yc->minY << ISPPRV_SETUP_YC_MINY_SHIFT,
OMAP3_ISP_IOMEM_PREV, ISPPRV_SETUP_YC);
}
/*
* preview_config_dcor - Configure Couplet Defect Correction
*/
static void
preview_config_dcor(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_dcor *dcor = ¶ms->dcor;
isp_reg_writel(isp, dcor->detect_correct[0],
OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR0);
isp_reg_writel(isp, dcor->detect_correct[1],
OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR1);
isp_reg_writel(isp, dcor->detect_correct[2],
OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR2);
isp_reg_writel(isp, dcor->detect_correct[3],
OMAP3_ISP_IOMEM_PREV, ISPPRV_CDC_THR3);
isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_DCCOUP,
dcor->couplet_mode_en ? ISPPRV_PCR_DCCOUP : 0);
}
/*
* preview_enable_dcor - Enable/disable Couplet Defect Correction
*/
static void preview_enable_dcor(struct isp_prev_device *prev, bool enable)
{
struct isp_device *isp = to_isp_device(prev);
if (enable)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_DCOREN);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_DCOREN);
}
/*
* preview_enable_drkframe_capture - Enable/disable Dark Frame Capture
*/
static void
preview_enable_drkframe_capture(struct isp_prev_device *prev, bool enable)
{
struct isp_device *isp = to_isp_device(prev);
if (enable)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_DRKFCAP);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_DRKFCAP);
}
/*
* preview_enable_drkframe - Enable/disable Dark Frame Subtraction
*/
static void preview_enable_drkframe(struct isp_prev_device *prev, bool enable)
{
struct isp_device *isp = to_isp_device(prev);
if (enable)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_DRKFEN);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_DRKFEN);
}
/*
* preview_config_noisefilter - Configure the Noise Filter
*/
static void
preview_config_noisefilter(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_nf *nf = ¶ms->nf;
unsigned int i;
isp_reg_writel(isp, nf->spread, OMAP3_ISP_IOMEM_PREV, ISPPRV_NF);
isp_reg_writel(isp, ISPPRV_NF_TABLE_ADDR,
OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
for (i = 0; i < OMAP3ISP_PREV_NF_TBL_SIZE; i++) {
isp_reg_writel(isp, nf->table[i],
OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_DATA);
}
}
/*
* preview_enable_noisefilter - Enable/disable the Noise Filter
*/
static void
preview_enable_noisefilter(struct isp_prev_device *prev, bool enable)
{
struct isp_device *isp = to_isp_device(prev);
if (enable)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_NFEN);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_NFEN);
}
/*
* preview_config_gammacorrn - Configure the Gamma Correction tables
*/
static void
preview_config_gammacorrn(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
const struct omap3isp_prev_gtables *gt = ¶ms->gamma;
unsigned int i;
isp_reg_writel(isp, ISPPRV_REDGAMMA_TABLE_ADDR,
OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++)
isp_reg_writel(isp, gt->red[i], OMAP3_ISP_IOMEM_PREV,
ISPPRV_SET_TBL_DATA);
isp_reg_writel(isp, ISPPRV_GREENGAMMA_TABLE_ADDR,
OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++)
isp_reg_writel(isp, gt->green[i], OMAP3_ISP_IOMEM_PREV,
ISPPRV_SET_TBL_DATA);
isp_reg_writel(isp, ISPPRV_BLUEGAMMA_TABLE_ADDR,
OMAP3_ISP_IOMEM_PREV, ISPPRV_SET_TBL_ADDR);
for (i = 0; i < OMAP3ISP_PREV_GAMMA_TBL_SIZE; i++)
isp_reg_writel(isp, gt->blue[i], OMAP3_ISP_IOMEM_PREV,
ISPPRV_SET_TBL_DATA);
}
/*
* preview_enable_gammacorrn - Enable/disable Gamma Correction
*
* When gamma correction is disabled, the module is bypassed and its output is
* the 8 MSB of the 10-bit input .
*/
static void
preview_enable_gammacorrn(struct isp_prev_device *prev, bool enable)
{
struct isp_device *isp = to_isp_device(prev);
if (enable)
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_GAMMA_BYPASS);
else
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_GAMMA_BYPASS);
}
/*
* preview_config_contrast - Configure the Contrast
*
* Value should be programmed before enabling the module.
*/
static void
preview_config_contrast(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT,
0xff << ISPPRV_CNT_BRT_CNT_SHIFT,
params->contrast << ISPPRV_CNT_BRT_CNT_SHIFT);
}
/*
* preview_config_brightness - Configure the Brightness
*/
static void
preview_config_brightness(struct isp_prev_device *prev,
const struct prev_params *params)
{
struct isp_device *isp = to_isp_device(prev);
isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_CNT_BRT,
0xff << ISPPRV_CNT_BRT_BRT_SHIFT,
params->brightness << ISPPRV_CNT_BRT_BRT_SHIFT);
}
/*
* preview_update_contrast - Updates the contrast.
* @contrast: Pointer to hold the current programmed contrast value.
*
* Value should be programmed before enabling the module.
*/
static void
preview_update_contrast(struct isp_prev_device *prev, u8 contrast)
{
struct prev_params *params;
unsigned long flags;
spin_lock_irqsave(&prev->params.lock, flags);
params = (prev->params.active & OMAP3ISP_PREV_CONTRAST)
? &prev->params.params[0] : &prev->params.params[1];
if (params->contrast != (contrast * ISPPRV_CONTRAST_UNITS)) {
params->contrast = contrast * ISPPRV_CONTRAST_UNITS;
params->update |= OMAP3ISP_PREV_CONTRAST;
}
spin_unlock_irqrestore(&prev->params.lock, flags);
}
/*
* preview_update_brightness - Updates the brightness in preview module.
* @brightness: Pointer to hold the current programmed brightness value.
*
*/
static void
preview_update_brightness(struct isp_prev_device *prev, u8 brightness)
{
struct prev_params *params;
unsigned long flags;
spin_lock_irqsave(&prev->params.lock, flags);
params = (prev->params.active & OMAP3ISP_PREV_BRIGHTNESS)
? &prev->params.params[0] : &prev->params.params[1];
if (params->brightness != (brightness * ISPPRV_BRIGHT_UNITS)) {
params->brightness = brightness * ISPPRV_BRIGHT_UNITS;
params->update |= OMAP3ISP_PREV_BRIGHTNESS;
}
spin_unlock_irqrestore(&prev->params.lock, flags);
}
static u32
preview_params_lock(struct isp_prev_device *prev, u32 update, bool shadow)
{
u32 active = prev->params.active;
if (shadow) {
/* Mark all shadow parameters we are going to touch as busy. */
prev->params.params[0].busy |= ~active & update;
prev->params.params[1].busy |= active & update;
} else {
/* Mark all active parameters we are going to touch as busy. */
update = (prev->params.params[0].update & active)
| (prev->params.params[1].update & ~active);
prev->params.params[0].busy |= active & update;
prev->params.params[1].busy |= ~active & update;
}
return update;
}
static void
preview_params_unlock(struct isp_prev_device *prev, u32 update, bool shadow)
{
u32 active = prev->params.active;
if (shadow) {
/* Set the update flag for shadow parameters that have been
* updated and clear the busy flag for all shadow parameters.
*/
prev->params.params[0].update |= (~active & update);
prev->params.params[1].update |= (active & update);
prev->params.params[0].busy &= active;
prev->params.params[1].busy &= ~active;
} else {
/* Clear the update flag for active parameters that have been
* applied and the busy flag for all active parameters.
*/
prev->params.params[0].update &= ~(active & update);
prev->params.params[1].update &= ~(~active & update);
prev->params.params[0].busy &= ~active;
prev->params.params[1].busy &= active;
}
}
static void preview_params_switch(struct isp_prev_device *prev)
{
u32 to_switch;
/* Switch active parameters with updated shadow parameters when the
* shadow parameter has been updated and neither the active not the
* shadow parameter is busy.
*/
to_switch = (prev->params.params[0].update & ~prev->params.active)
| (prev->params.params[1].update & prev->params.active);
to_switch &= ~(prev->params.params[0].busy |
prev->params.params[1].busy);
if (to_switch == 0)
return;
prev->params.active ^= to_switch;
/* Remove the update flag for the shadow copy of parameters we have
* switched.
*/
prev->params.params[0].update &= ~(~prev->params.active & to_switch);
prev->params.params[1].update &= ~(prev->params.active & to_switch);
}
/* preview parameters update structure */
struct preview_update {
void (*config)(struct isp_prev_device *, const struct prev_params *);
void (*enable)(struct isp_prev_device *, bool);
unsigned int param_offset;
unsigned int param_size;
unsigned int config_offset;
bool skip;
};
/* Keep the array indexed by the OMAP3ISP_PREV_* bit number. */
static const struct preview_update update_attrs[] = {
/* OMAP3ISP_PREV_LUMAENH */ {
preview_config_luma_enhancement,
preview_enable_luma_enhancement,
offsetof(struct prev_params, luma),
sizeof_field(struct prev_params, luma),
offsetof(struct omap3isp_prev_update_config, luma),
}, /* OMAP3ISP_PREV_INVALAW */ {
NULL,
preview_enable_invalaw,
}, /* OMAP3ISP_PREV_HRZ_MED */ {
preview_config_hmed,
preview_enable_hmed,
offsetof(struct prev_params, hmed),
sizeof_field(struct prev_params, hmed),
offsetof(struct omap3isp_prev_update_config, hmed),
}, /* OMAP3ISP_PREV_CFA */ {
preview_config_cfa,
NULL,
offsetof(struct prev_params, cfa),
sizeof_field(struct prev_params, cfa),
offsetof(struct omap3isp_prev_update_config, cfa),
}, /* OMAP3ISP_PREV_CHROMA_SUPP */ {
preview_config_chroma_suppression,
preview_enable_chroma_suppression,
offsetof(struct prev_params, csup),
sizeof_field(struct prev_params, csup),
offsetof(struct omap3isp_prev_update_config, csup),
}, /* OMAP3ISP_PREV_WB */ {
preview_config_whitebalance,
NULL,
offsetof(struct prev_params, wbal),
sizeof_field(struct prev_params, wbal),
offsetof(struct omap3isp_prev_update_config, wbal),
}, /* OMAP3ISP_PREV_BLKADJ */ {
preview_config_blkadj,
NULL,
offsetof(struct prev_params, blkadj),
sizeof_field(struct prev_params, blkadj),
offsetof(struct omap3isp_prev_update_config, blkadj),
}, /* OMAP3ISP_PREV_RGB2RGB */ {
preview_config_rgb_blending,
NULL,
offsetof(struct prev_params, rgb2rgb),
sizeof_field(struct prev_params, rgb2rgb),
offsetof(struct omap3isp_prev_update_config, rgb2rgb),
}, /* OMAP3ISP_PREV_COLOR_CONV */ {
preview_config_csc,
NULL,
offsetof(struct prev_params, csc),
sizeof_field(struct prev_params, csc),
offsetof(struct omap3isp_prev_update_config, csc),
}, /* OMAP3ISP_PREV_YC_LIMIT */ {
preview_config_yc_range,
NULL,
offsetof(struct prev_params, yclimit),
sizeof_field(struct prev_params, yclimit),
offsetof(struct omap3isp_prev_update_config, yclimit),
}, /* OMAP3ISP_PREV_DEFECT_COR */ {
preview_config_dcor,
preview_enable_dcor,
offsetof(struct prev_params, dcor),
sizeof_field(struct prev_params, dcor),
offsetof(struct omap3isp_prev_update_config, dcor),
}, /* Previously OMAP3ISP_PREV_GAMMABYPASS, not used anymore */ {
NULL,
NULL,
}, /* OMAP3ISP_PREV_DRK_FRM_CAPTURE */ {
NULL,
preview_enable_drkframe_capture,
}, /* OMAP3ISP_PREV_DRK_FRM_SUBTRACT */ {
NULL,
preview_enable_drkframe,
}, /* OMAP3ISP_PREV_LENS_SHADING */ {
NULL,
preview_enable_drkframe,
}, /* OMAP3ISP_PREV_NF */ {
preview_config_noisefilter,
preview_enable_noisefilter,
offsetof(struct prev_params, nf),
sizeof_field(struct prev_params, nf),
offsetof(struct omap3isp_prev_update_config, nf),
}, /* OMAP3ISP_PREV_GAMMA */ {
preview_config_gammacorrn,
preview_enable_gammacorrn,
offsetof(struct prev_params, gamma),
sizeof_field(struct prev_params, gamma),
offsetof(struct omap3isp_prev_update_config, gamma),
}, /* OMAP3ISP_PREV_CONTRAST */ {
preview_config_contrast,
NULL,
0, 0, 0, true,
}, /* OMAP3ISP_PREV_BRIGHTNESS */ {
preview_config_brightness,
NULL,
0, 0, 0, true,
},
};
/*
* preview_config - Copy and update local structure with userspace preview
* configuration.
* @prev: ISP preview engine
* @cfg: Configuration
*
* Return zero if success or -EFAULT if the configuration can't be copied from
* userspace.
*/
static int preview_config(struct isp_prev_device *prev,
struct omap3isp_prev_update_config *cfg)
{
unsigned long flags;
unsigned int i;
int rval = 0;
u32 update;
u32 active;
if (cfg->update == 0)
return 0;
/* Mark the shadow parameters we're going to update as busy. */
spin_lock_irqsave(&prev->params.lock, flags);
preview_params_lock(prev, cfg->update, true);
active = prev->params.active;
spin_unlock_irqrestore(&prev->params.lock, flags);
update = 0;
for (i = 0; i < ARRAY_SIZE(update_attrs); i++) {
const struct preview_update *attr = &update_attrs[i];
struct prev_params *params;
unsigned int bit = 1 << i;
if (attr->skip || !(cfg->update & bit))
continue;
params = &prev->params.params[!!(active & bit)];
if (cfg->flag & bit) {
void __user *from = *(void __user **)
((void *)cfg + attr->config_offset);
void *to = (void *)params + attr->param_offset;
size_t size = attr->param_size;
if (to && from && size) {
if (copy_from_user(to, from, size)) {
rval = -EFAULT;
break;
}
}
params->features |= bit;
} else {
params->features &= ~bit;
}
update |= bit;
}
spin_lock_irqsave(&prev->params.lock, flags);
preview_params_unlock(prev, update, true);
preview_params_switch(prev);
spin_unlock_irqrestore(&prev->params.lock, flags);
return rval;
}
/*
* preview_setup_hw - Setup preview registers and/or internal memory
* @prev: pointer to preview private structure
* @update: Bitmask of parameters to setup
* @active: Bitmask of parameters active in set 0
* Note: can be called from interrupt context
* Return none
*/
static void preview_setup_hw(struct isp_prev_device *prev, u32 update,
u32 active)
{
unsigned int i;
if (update == 0)
return;
for (i = 0; i < ARRAY_SIZE(update_attrs); i++) {
const struct preview_update *attr = &update_attrs[i];
struct prev_params *params;
unsigned int bit = 1 << i;
if (!(update & bit))
continue;
params = &prev->params.params[!(active & bit)];
if (params->features & bit) {
if (attr->config)
attr->config(prev, params);
if (attr->enable)
attr->enable(prev, true);
} else {
if (attr->enable)
attr->enable(prev, false);
}
}
}
/*
* preview_config_ycpos - Configure byte layout of YUV image.
* @prev: pointer to previewer private structure
* @pixelcode: pixel code
*/
static void preview_config_ycpos(struct isp_prev_device *prev, u32 pixelcode)
{
struct isp_device *isp = to_isp_device(prev);
enum preview_ycpos_mode mode;
switch (pixelcode) {
case MEDIA_BUS_FMT_YUYV8_1X16:
mode = YCPOS_CrYCbY;
break;
case MEDIA_BUS_FMT_UYVY8_1X16:
mode = YCPOS_YCrYCb;
break;
default:
return;
}
isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_YCPOS_CrYCbY,
mode << ISPPRV_PCR_YCPOS_SHIFT);
}
/*
* preview_config_averager - Enable / disable / configure averager
* @average: Average value to be configured.
*/
static void preview_config_averager(struct isp_prev_device *prev, u8 average)
{
struct isp_device *isp = to_isp_device(prev);
isp_reg_writel(isp, ISPPRV_AVE_EVENDIST_2 << ISPPRV_AVE_EVENDIST_SHIFT |
ISPPRV_AVE_ODDDIST_2 << ISPPRV_AVE_ODDDIST_SHIFT |
average, OMAP3_ISP_IOMEM_PREV, ISPPRV_AVE);
}
/*
* preview_config_input_format - Configure the input format
* @prev: The preview engine
* @info: Sink pad format information
*
* Enable and configure CFA interpolation for Bayer formats and disable it for
* greyscale formats.
*
* The CFA table is organised in four blocks, one per Bayer component. The
* hardware expects blocks to follow the Bayer order of the input data, while
* the driver stores the table in GRBG order in memory. The blocks need to be
* reordered to support non-GRBG Bayer patterns.
*/
static void preview_config_input_format(struct isp_prev_device *prev,
const struct isp_format_info *info)
{
struct isp_device *isp = to_isp_device(prev);
struct prev_params *params;
if (info->width == 8)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_WIDTH);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_WIDTH);
switch (info->flavor) {
case MEDIA_BUS_FMT_SGRBG8_1X8:
prev->params.cfa_order = 0;
break;
case MEDIA_BUS_FMT_SRGGB8_1X8:
prev->params.cfa_order = 1;
break;
case MEDIA_BUS_FMT_SBGGR8_1X8:
prev->params.cfa_order = 2;
break;
case MEDIA_BUS_FMT_SGBRG8_1X8:
prev->params.cfa_order = 3;
break;
default:
/* Disable CFA for non-Bayer formats. */
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_CFAEN);
return;
}
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR, ISPPRV_PCR_CFAEN);
isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_CFAFMT_MASK, ISPPRV_PCR_CFAFMT_BAYER);
params = (prev->params.active & OMAP3ISP_PREV_CFA)
? &prev->params.params[0] : &prev->params.params[1];
preview_config_cfa(prev, params);
}
/*
* preview_config_input_size - Configure the input frame size
*
* The preview engine crops several rows and columns internally depending on
* which processing blocks are enabled. The driver assumes all those blocks are
* enabled when reporting source pad formats to userspace. If this assumption is
* not true, rows and columns must be manually cropped at the preview engine
* input to avoid overflows at the end of lines and frames.
*
* See the explanation at the PREV_MARGIN_* definitions for more details.
*/
static void preview_config_input_size(struct isp_prev_device *prev, u32 active)
{
const struct v4l2_mbus_framefmt *format = &prev->formats[PREV_PAD_SINK];
struct isp_device *isp = to_isp_device(prev);
unsigned int sph = prev->crop.left;
unsigned int eph = prev->crop.left + prev->crop.width - 1;
unsigned int slv = prev->crop.top;
unsigned int elv = prev->crop.top + prev->crop.height - 1;
u32 features;
if (format->code != MEDIA_BUS_FMT_Y8_1X8 &&
format->code != MEDIA_BUS_FMT_Y10_1X10) {
sph -= 2;
eph += 2;
slv -= 2;
elv += 2;
}
features = (prev->params.params[0].features & active)
| (prev->params.params[1].features & ~active);
if (features & (OMAP3ISP_PREV_DEFECT_COR | OMAP3ISP_PREV_NF)) {
sph -= 2;
eph += 2;
slv -= 2;
elv += 2;
}
if (features & OMAP3ISP_PREV_HRZ_MED) {
sph -= 2;
eph += 2;
}
if (features & (OMAP3ISP_PREV_CHROMA_SUPP | OMAP3ISP_PREV_LUMAENH))
sph -= 2;
isp_reg_writel(isp, (sph << ISPPRV_HORZ_INFO_SPH_SHIFT) | eph,
OMAP3_ISP_IOMEM_PREV, ISPPRV_HORZ_INFO);
isp_reg_writel(isp, (slv << ISPPRV_VERT_INFO_SLV_SHIFT) | elv,
OMAP3_ISP_IOMEM_PREV, ISPPRV_VERT_INFO);
}
/*
* preview_config_inlineoffset - Configures the Read address line offset.
* @prev: Preview module
* @offset: Line offset
*
* According to the TRM, the line offset must be aligned on a 32 bytes boundary.
* However, a hardware bug requires the memory start address to be aligned on a
* 64 bytes boundary, so the offset probably should be aligned on 64 bytes as
* well.
*/
static void
preview_config_inlineoffset(struct isp_prev_device *prev, u32 offset)
{
struct isp_device *isp = to_isp_device(prev);
isp_reg_writel(isp, offset & 0xffff, OMAP3_ISP_IOMEM_PREV,
ISPPRV_RADR_OFFSET);
}
/*
* preview_set_inaddr - Sets memory address of input frame.
* @addr: 32bit memory address aligned on 32byte boundary.
*
* Configures the memory address from which the input frame is to be read.
*/
static void preview_set_inaddr(struct isp_prev_device *prev, u32 addr)
{
struct isp_device *isp = to_isp_device(prev);
isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_RSDR_ADDR);
}
/*
* preview_config_outlineoffset - Configures the Write address line offset.
* @offset: Line Offset for the preview output.
*
* The offset must be a multiple of 32 bytes.
*/
static void preview_config_outlineoffset(struct isp_prev_device *prev,
u32 offset)
{
struct isp_device *isp = to_isp_device(prev);
isp_reg_writel(isp, offset & 0xffff, OMAP3_ISP_IOMEM_PREV,
ISPPRV_WADD_OFFSET);
}
/*
* preview_set_outaddr - Sets the memory address to store output frame
* @addr: 32bit memory address aligned on 32byte boundary.
*
* Configures the memory address to which the output frame is written.
*/
static void preview_set_outaddr(struct isp_prev_device *prev, u32 addr)
{
struct isp_device *isp = to_isp_device(prev);
isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_PREV, ISPPRV_WSDR_ADDR);
}
static void preview_adjust_bandwidth(struct isp_prev_device *prev)
{
struct isp_pipeline *pipe = to_isp_pipeline(&prev->subdev.entity);
struct isp_device *isp = to_isp_device(prev);
const struct v4l2_mbus_framefmt *ifmt = &prev->formats[PREV_PAD_SINK];
unsigned long l3_ick = pipe->l3_ick;
struct v4l2_fract *timeperframe;
unsigned int cycles_per_frame;
unsigned int requests_per_frame;
unsigned int cycles_per_request;
unsigned int minimum;
unsigned int maximum;
unsigned int value;
if (prev->input != PREVIEW_INPUT_MEMORY) {
isp_reg_clr(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP,
ISPSBL_SDR_REQ_PRV_EXP_MASK);
return;
}
/* Compute the minimum number of cycles per request, based on the
* pipeline maximum data rate. This is an absolute lower bound if we
* don't want SBL overflows, so round the value up.
*/
cycles_per_request = div_u64((u64)l3_ick / 2 * 256 + pipe->max_rate - 1,
pipe->max_rate);
minimum = DIV_ROUND_UP(cycles_per_request, 32);
/* Compute the maximum number of cycles per request, based on the
* requested frame rate. This is a soft upper bound to achieve a frame
* rate equal or higher than the requested value, so round the value
* down.
*/
timeperframe = &pipe->max_timeperframe;
requests_per_frame = DIV_ROUND_UP(ifmt->width * 2, 256) * ifmt->height;
cycles_per_frame = div_u64((u64)l3_ick * timeperframe->numerator,
timeperframe->denominator);
cycles_per_request = cycles_per_frame / requests_per_frame;
maximum = cycles_per_request / 32;
value = max(minimum, maximum);
dev_dbg(isp->dev, "%s: cycles per request = %u\n", __func__, value);
isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_SDR_REQ_EXP,
ISPSBL_SDR_REQ_PRV_EXP_MASK,
value << ISPSBL_SDR_REQ_PRV_EXP_SHIFT);
}
/*
* omap3isp_preview_busy - Gets busy state of preview module.
*/
int omap3isp_preview_busy(struct isp_prev_device *prev)
{
struct isp_device *isp = to_isp_device(prev);
return isp_reg_readl(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR)
& ISPPRV_PCR_BUSY;
}
/*
* omap3isp_preview_restore_context - Restores the values of preview registers
*/
void omap3isp_preview_restore_context(struct isp_device *isp)
{
struct isp_prev_device *prev = &isp->isp_prev;
const u32 update = OMAP3ISP_PREV_FEATURES_END - 1;
prev->params.params[0].update = prev->params.active & update;
prev->params.params[1].update = ~prev->params.active & update;
preview_setup_hw(prev, update, prev->params.active);
prev->params.params[0].update = 0;
prev->params.params[1].update = 0;
}
/*
* preview_print_status - Dump preview module registers to the kernel log
*/
#define PREV_PRINT_REGISTER(isp, name)\
dev_dbg(isp->dev, "###PRV " #name "=0x%08x\n", \
isp_reg_readl(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_##name))
static void preview_print_status(struct isp_prev_device *prev)
{
struct isp_device *isp = to_isp_device(prev);
dev_dbg(isp->dev, "-------------Preview Register dump----------\n");
PREV_PRINT_REGISTER(isp, PCR);
PREV_PRINT_REGISTER(isp, HORZ_INFO);
PREV_PRINT_REGISTER(isp, VERT_INFO);
PREV_PRINT_REGISTER(isp, RSDR_ADDR);
PREV_PRINT_REGISTER(isp, RADR_OFFSET);
PREV_PRINT_REGISTER(isp, DSDR_ADDR);
PREV_PRINT_REGISTER(isp, DRKF_OFFSET);
PREV_PRINT_REGISTER(isp, WSDR_ADDR);
PREV_PRINT_REGISTER(isp, WADD_OFFSET);
PREV_PRINT_REGISTER(isp, AVE);
PREV_PRINT_REGISTER(isp, HMED);
PREV_PRINT_REGISTER(isp, NF);
PREV_PRINT_REGISTER(isp, WB_DGAIN);
PREV_PRINT_REGISTER(isp, WBGAIN);
PREV_PRINT_REGISTER(isp, WBSEL);
PREV_PRINT_REGISTER(isp, CFA);
PREV_PRINT_REGISTER(isp, BLKADJOFF);
PREV_PRINT_REGISTER(isp, RGB_MAT1);
PREV_PRINT_REGISTER(isp, RGB_MAT2);
PREV_PRINT_REGISTER(isp, RGB_MAT3);
PREV_PRINT_REGISTER(isp, RGB_MAT4);
PREV_PRINT_REGISTER(isp, RGB_MAT5);
PREV_PRINT_REGISTER(isp, RGB_OFF1);
PREV_PRINT_REGISTER(isp, RGB_OFF2);
PREV_PRINT_REGISTER(isp, CSC0);
PREV_PRINT_REGISTER(isp, CSC1);
PREV_PRINT_REGISTER(isp, CSC2);
PREV_PRINT_REGISTER(isp, CSC_OFFSET);
PREV_PRINT_REGISTER(isp, CNT_BRT);
PREV_PRINT_REGISTER(isp, CSUP);
PREV_PRINT_REGISTER(isp, SETUP_YC);
PREV_PRINT_REGISTER(isp, SET_TBL_ADDR);
PREV_PRINT_REGISTER(isp, CDC_THR0);
PREV_PRINT_REGISTER(isp, CDC_THR1);
PREV_PRINT_REGISTER(isp, CDC_THR2);
PREV_PRINT_REGISTER(isp, CDC_THR3);
dev_dbg(isp->dev, "--------------------------------------------\n");
}
/*
* preview_init_params - init image processing parameters.
* @prev: pointer to previewer private structure
*/
static void preview_init_params(struct isp_prev_device *prev)
{
struct prev_params *params;
unsigned int i;
spin_lock_init(&prev->params.lock);
prev->params.active = ~0;
prev->params.params[0].busy = 0;
prev->params.params[0].update = OMAP3ISP_PREV_FEATURES_END - 1;
prev->params.params[1].busy = 0;
prev->params.params[1].update = 0;
params = &prev->params.params[0];
/* Init values */
params->contrast = ISPPRV_CONTRAST_DEF * ISPPRV_CONTRAST_UNITS;
params->brightness = ISPPRV_BRIGHT_DEF * ISPPRV_BRIGHT_UNITS;
params->cfa.format = OMAP3ISP_CFAFMT_BAYER;
memcpy(params->cfa.table, cfa_coef_table,
sizeof(params->cfa.table));
params->cfa.gradthrs_horz = FLR_CFA_GRADTHRS_HORZ;
params->cfa.gradthrs_vert = FLR_CFA_GRADTHRS_VERT;
params->csup.gain = FLR_CSUP_GAIN;
params->csup.thres = FLR_CSUP_THRES;
params->csup.hypf_en = 0;
memcpy(params->luma.table, luma_enhance_table,
sizeof(params->luma.table));
params->nf.spread = FLR_NF_STRGTH;
memcpy(params->nf.table, noise_filter_table, sizeof(params->nf.table));
params->dcor.couplet_mode_en = 1;
for (i = 0; i < OMAP3ISP_PREV_DETECT_CORRECT_CHANNELS; i++)
params->dcor.detect_correct[i] = DEF_DETECT_CORRECT_VAL;
memcpy(params->gamma.blue, gamma_table, sizeof(params->gamma.blue));
memcpy(params->gamma.green, gamma_table, sizeof(params->gamma.green));
memcpy(params->gamma.red, gamma_table, sizeof(params->gamma.red));
params->wbal.dgain = FLR_WBAL_DGAIN;
params->wbal.coef0 = FLR_WBAL_COEF;
params->wbal.coef1 = FLR_WBAL_COEF;
params->wbal.coef2 = FLR_WBAL_COEF;
params->wbal.coef3 = FLR_WBAL_COEF;
params->blkadj.red = FLR_BLKADJ_RED;
params->blkadj.green = FLR_BLKADJ_GREEN;
params->blkadj.blue = FLR_BLKADJ_BLUE;
params->rgb2rgb = flr_rgb2rgb;
params->csc = flr_prev_csc;
params->yclimit.minC = ISPPRV_YC_MIN;
params->yclimit.maxC = ISPPRV_YC_MAX;
params->yclimit.minY = ISPPRV_YC_MIN;
params->yclimit.maxY = ISPPRV_YC_MAX;
params->features = OMAP3ISP_PREV_CFA | OMAP3ISP_PREV_DEFECT_COR
| OMAP3ISP_PREV_NF | OMAP3ISP_PREV_GAMMA
| OMAP3ISP_PREV_BLKADJ | OMAP3ISP_PREV_YC_LIMIT
| OMAP3ISP_PREV_RGB2RGB | OMAP3ISP_PREV_COLOR_CONV
| OMAP3ISP_PREV_WB | OMAP3ISP_PREV_BRIGHTNESS
| OMAP3ISP_PREV_CONTRAST;
}
/*
* preview_max_out_width - Handle previewer hardware output limitations
* @prev: pointer to previewer private structure
* returns maximum width output for current isp revision
*/
static unsigned int preview_max_out_width(struct isp_prev_device *prev)
{
struct isp_device *isp = to_isp_device(prev);
switch (isp->revision) {
case ISP_REVISION_1_0:
return PREV_MAX_OUT_WIDTH_REV_1;
case ISP_REVISION_2_0:
default:
return PREV_MAX_OUT_WIDTH_REV_2;
case ISP_REVISION_15_0:
return PREV_MAX_OUT_WIDTH_REV_15;
}
}
static void preview_configure(struct isp_prev_device *prev)
{
struct isp_device *isp = to_isp_device(prev);
const struct isp_format_info *info;
struct v4l2_mbus_framefmt *format;
unsigned long flags;
u32 update;
u32 active;
spin_lock_irqsave(&prev->params.lock, flags);
/* Mark all active parameters we are going to touch as busy. */
update = preview_params_lock(prev, 0, false);
active = prev->params.active;
spin_unlock_irqrestore(&prev->params.lock, flags);
/* PREV_PAD_SINK */
format = &prev->formats[PREV_PAD_SINK];
info = omap3isp_video_format_info(format->code);
preview_adjust_bandwidth(prev);
preview_config_input_format(prev, info);
preview_config_input_size(prev, active);
if (prev->input == PREVIEW_INPUT_CCDC)
preview_config_inlineoffset(prev, 0);
else
preview_config_inlineoffset(prev, ALIGN(format->width, 0x20) *
info->bpp);
preview_setup_hw(prev, update, active);
/* PREV_PAD_SOURCE */
format = &prev->formats[PREV_PAD_SOURCE];
if (prev->output & PREVIEW_OUTPUT_MEMORY)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_SDRPORT);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_SDRPORT);
if (prev->output & PREVIEW_OUTPUT_RESIZER)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_RSZPORT);
else
isp_reg_clr(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_RSZPORT);
if (prev->output & PREVIEW_OUTPUT_MEMORY)
preview_config_outlineoffset(prev,
ALIGN(format->width, 0x10) * 2);
preview_config_averager(prev, 0);
preview_config_ycpos(prev, format->code);
spin_lock_irqsave(&prev->params.lock, flags);
preview_params_unlock(prev, update, false);
spin_unlock_irqrestore(&prev->params.lock, flags);
}
/* -----------------------------------------------------------------------------
* Interrupt handling
*/
static void preview_enable_oneshot(struct isp_prev_device *prev)
{
struct isp_device *isp = to_isp_device(prev);
/* The PCR.SOURCE bit is automatically reset to 0 when the PCR.ENABLE
* bit is set. As the preview engine is used in single-shot mode, we
* need to set PCR.SOURCE before enabling the preview engine.
*/
if (prev->input == PREVIEW_INPUT_MEMORY)
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_SOURCE);
isp_reg_set(isp, OMAP3_ISP_IOMEM_PREV, ISPPRV_PCR,
ISPPRV_PCR_EN | ISPPRV_PCR_ONESHOT);
}
void omap3isp_preview_isr_frame_sync(struct isp_prev_device *prev)
{
/*
* If ISP_VIDEO_DMAQUEUE_QUEUED is set, DMA queue had an underrun
* condition, the module was paused and now we have a buffer queued
* on the output again. Restart the pipeline if running in continuous
* mode.
*/
if (prev->state == ISP_PIPELINE_STREAM_CONTINUOUS &&
prev->video_out.dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED) {
preview_enable_oneshot(prev);
isp_video_dmaqueue_flags_clr(&prev->video_out);
}
}
static void preview_isr_buffer(struct isp_prev_device *prev)
{
struct isp_pipeline *pipe = to_isp_pipeline(&prev->subdev.entity);
struct isp_buffer *buffer;
int restart = 0;
if (prev->output & PREVIEW_OUTPUT_MEMORY) {
buffer = omap3isp_video_buffer_next(&prev->video_out);
if (buffer != NULL) {
preview_set_outaddr(prev, buffer->dma);
restart = 1;
}
pipe->state |= ISP_PIPELINE_IDLE_OUTPUT;
}
if (prev->input == PREVIEW_INPUT_MEMORY) {
buffer = omap3isp_video_buffer_next(&prev->video_in);
if (buffer != NULL)
preview_set_inaddr(prev, buffer->dma);
pipe->state |= ISP_PIPELINE_IDLE_INPUT;
}
switch (prev->state) {
case ISP_PIPELINE_STREAM_SINGLESHOT:
if (isp_pipeline_ready(pipe))
omap3isp_pipeline_set_stream(pipe,
ISP_PIPELINE_STREAM_SINGLESHOT);
break;
case ISP_PIPELINE_STREAM_CONTINUOUS:
/* If an underrun occurs, the video queue operation handler will
* restart the preview engine. Otherwise restart it immediately.
*/
if (restart)
preview_enable_oneshot(prev);
break;
case ISP_PIPELINE_STREAM_STOPPED:
default:
return;
}
}
/*
* omap3isp_preview_isr - ISP preview engine interrupt handler
*
* Manage the preview engine video buffers and configure shadowed registers.
*/
void omap3isp_preview_isr(struct isp_prev_device *prev)
{
unsigned long flags;
u32 update;
u32 active;
if (omap3isp_module_sync_is_stopping(&prev->wait, &prev->stopping))
return;
spin_lock_irqsave(&prev->params.lock, flags);
preview_params_switch(prev);
update = preview_params_lock(prev, 0, false);
active = prev->params.active;
spin_unlock_irqrestore(&prev->params.lock, flags);
preview_setup_hw(prev, update, active);
preview_config_input_size(prev, active);
if (prev->input == PREVIEW_INPUT_MEMORY ||
prev->output & PREVIEW_OUTPUT_MEMORY)
preview_isr_buffer(prev);
else if (prev->state == ISP_PIPELINE_STREAM_CONTINUOUS)
preview_enable_oneshot(prev);
spin_lock_irqsave(&prev->params.lock, flags);
preview_params_unlock(prev, update, false);
spin_unlock_irqrestore(&prev->params.lock, flags);
}
/* -----------------------------------------------------------------------------
* ISP video operations
*/
static int preview_video_queue(struct isp_video *video,
struct isp_buffer *buffer)
{
struct isp_prev_device *prev = &video->isp->isp_prev;
if (video->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
preview_set_inaddr(prev, buffer->dma);
if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
preview_set_outaddr(prev, buffer->dma);
return 0;
}
static const struct isp_video_operations preview_video_ops = {
.queue = preview_video_queue,
};
/* -----------------------------------------------------------------------------
* V4L2 subdev operations
*/
/*
* preview_s_ctrl - Handle set control subdev method
* @ctrl: pointer to v4l2 control structure
*/
static int preview_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct isp_prev_device *prev =
container_of(ctrl->handler, struct isp_prev_device, ctrls);
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
preview_update_brightness(prev, ctrl->val);
break;
case V4L2_CID_CONTRAST:
preview_update_contrast(prev, ctrl->val);
break;
}
return 0;
}
static const struct v4l2_ctrl_ops preview_ctrl_ops = {
.s_ctrl = preview_s_ctrl,
};
/*
* preview_ioctl - Handle preview module private ioctl's
* @sd: pointer to v4l2 subdev structure
* @cmd: configuration command
* @arg: configuration argument
* return -EINVAL or zero on success
*/
static long preview_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg)
{
struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
switch (cmd) {
case VIDIOC_OMAP3ISP_PRV_CFG:
return preview_config(prev, arg);
default:
return -ENOIOCTLCMD;
}
}
/*
* preview_set_stream - Enable/Disable streaming on preview subdev
* @sd : pointer to v4l2 subdev structure
* @enable: 1 == Enable, 0 == Disable
* return -EINVAL or zero on success
*/
static int preview_set_stream(struct v4l2_subdev *sd, int enable)
{
struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
struct isp_video *video_out = &prev->video_out;
struct isp_device *isp = to_isp_device(prev);
struct device *dev = to_device(prev);
if (prev->state == ISP_PIPELINE_STREAM_STOPPED) {
if (enable == ISP_PIPELINE_STREAM_STOPPED)
return 0;
omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_PREVIEW);
preview_configure(prev);
atomic_set(&prev->stopping, 0);
preview_print_status(prev);
}
switch (enable) {
case ISP_PIPELINE_STREAM_CONTINUOUS:
if (prev->output & PREVIEW_OUTPUT_MEMORY)
omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE);
if (video_out->dmaqueue_flags & ISP_VIDEO_DMAQUEUE_QUEUED ||
!(prev->output & PREVIEW_OUTPUT_MEMORY))
preview_enable_oneshot(prev);
isp_video_dmaqueue_flags_clr(video_out);
break;
case ISP_PIPELINE_STREAM_SINGLESHOT:
if (prev->input == PREVIEW_INPUT_MEMORY)
omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_READ);
if (prev->output & PREVIEW_OUTPUT_MEMORY)
omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE);
preview_enable_oneshot(prev);
break;
case ISP_PIPELINE_STREAM_STOPPED:
if (omap3isp_module_sync_idle(&sd->entity, &prev->wait,
&prev->stopping))
dev_dbg(dev, "%s: stop timeout.\n", sd->name);
omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_PREVIEW_READ);
omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_PREVIEW_WRITE);
omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_PREVIEW);
isp_video_dmaqueue_flags_clr(video_out);
break;
}
prev->state = enable;
return 0;
}
static struct v4l2_mbus_framefmt *
__preview_get_format(struct isp_prev_device *prev,
struct v4l2_subdev_state *sd_state,
unsigned int pad, enum v4l2_subdev_format_whence which)
{
if (which == V4L2_SUBDEV_FORMAT_TRY)
return v4l2_subdev_state_get_format(sd_state, pad);
else
return &prev->formats[pad];
}
static struct v4l2_rect *
__preview_get_crop(struct isp_prev_device *prev,
struct v4l2_subdev_state *sd_state,
enum v4l2_subdev_format_whence which)
{
if (which == V4L2_SUBDEV_FORMAT_TRY)
return v4l2_subdev_state_get_crop(sd_state, PREV_PAD_SINK);
else
return &prev->crop;
}
/* previewer format descriptions */
static const unsigned int preview_input_fmts[] = {
MEDIA_BUS_FMT_Y8_1X8,
MEDIA_BUS_FMT_SGRBG8_1X8,
MEDIA_BUS_FMT_SRGGB8_1X8,
MEDIA_BUS_FMT_SBGGR8_1X8,
MEDIA_BUS_FMT_SGBRG8_1X8,
MEDIA_BUS_FMT_Y10_1X10,
MEDIA_BUS_FMT_SGRBG10_1X10,
MEDIA_BUS_FMT_SRGGB10_1X10,
MEDIA_BUS_FMT_SBGGR10_1X10,
MEDIA_BUS_FMT_SGBRG10_1X10,
};
static const unsigned int preview_output_fmts[] = {
MEDIA_BUS_FMT_UYVY8_1X16,
MEDIA_BUS_FMT_YUYV8_1X16,
};
/*
* preview_try_format - Validate a format
* @prev: ISP preview engine
* @sd_state: V4L2 subdev state
* @pad: pad number
* @fmt: format to be validated
* @which: try/active format selector
*
* Validate and adjust the given format for the given pad based on the preview
* engine limits and the format and crop rectangles on other pads.
*/
static void preview_try_format(struct isp_prev_device *prev,
struct v4l2_subdev_state *sd_state,
unsigned int pad,
struct v4l2_mbus_framefmt *fmt,
enum v4l2_subdev_format_whence which)
{
u32 pixelcode;
struct v4l2_rect *crop;
unsigned int i;
switch (pad) {
case PREV_PAD_SINK:
/* When reading data from the CCDC, the input size has already
* been mangled by the CCDC output pad so it can be accepted
* as-is.
*
* When reading data from memory, clamp the requested width and
* height. The TRM doesn't specify a minimum input height, make
* sure we got enough lines to enable the noise filter and color
* filter array interpolation.
*/
if (prev->input == PREVIEW_INPUT_MEMORY) {
fmt->width = clamp_t(u32, fmt->width, PREV_MIN_IN_WIDTH,
preview_max_out_width(prev));
fmt->height = clamp_t(u32, fmt->height,
PREV_MIN_IN_HEIGHT,
PREV_MAX_IN_HEIGHT);
}
fmt->colorspace = V4L2_COLORSPACE_SRGB;
for (i = 0; i < ARRAY_SIZE(preview_input_fmts); i++) {
if (fmt->code == preview_input_fmts[i])
break;
}
/* If not found, use SGRBG10 as default */
if (i >= ARRAY_SIZE(preview_input_fmts))
fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
break;
case PREV_PAD_SOURCE:
pixelcode = fmt->code;
*fmt = *__preview_get_format(prev, sd_state, PREV_PAD_SINK,
which);
switch (pixelcode) {
case MEDIA_BUS_FMT_YUYV8_1X16:
case MEDIA_BUS_FMT_UYVY8_1X16:
fmt->code = pixelcode;
break;
default:
fmt->code = MEDIA_BUS_FMT_YUYV8_1X16;
break;
}
/* The preview module output size is configurable through the
* averager (horizontal scaling by 1/1, 1/2, 1/4 or 1/8). This
* is not supported yet, hardcode the output size to the crop
* rectangle size.
*/
crop = __preview_get_crop(prev, sd_state, which);
fmt->width = crop->width;
fmt->height = crop->height;
fmt->colorspace = V4L2_COLORSPACE_JPEG;
break;
}
fmt->field = V4L2_FIELD_NONE;
}
/*
* preview_try_crop - Validate a crop rectangle
* @prev: ISP preview engine
* @sink: format on the sink pad
* @crop: crop rectangle to be validated
*
* The preview engine crops lines and columns for its internal operation,
* depending on which filters are enabled. Enforce minimum crop margins to
* handle that transparently for userspace.
*
* See the explanation at the PREV_MARGIN_* definitions for more details.
*/
static void preview_try_crop(struct isp_prev_device *prev,
const struct v4l2_mbus_framefmt *sink,
struct v4l2_rect *crop)
{
unsigned int left = PREV_MARGIN_LEFT;
unsigned int right = sink->width - PREV_MARGIN_RIGHT;
unsigned int top = PREV_MARGIN_TOP;
unsigned int bottom = sink->height - PREV_MARGIN_BOTTOM;
/* When processing data on-the-fly from the CCDC, at least 2 pixels must
* be cropped from the left and right sides of the image. As we don't
* know which filters will be enabled, increase the left and right
* margins by two.
*/
if (prev->input == PREVIEW_INPUT_CCDC) {
left += 2;
right -= 2;
}
/* The CFA filter crops 4 lines and 4 columns in Bayer mode, and 2 lines
* and no columns in other modes. Increase the margins based on the sink
* format.
*/
if (sink->code != MEDIA_BUS_FMT_Y8_1X8 &&
sink->code != MEDIA_BUS_FMT_Y10_1X10) {
left += 2;
right -= 2;
top += 2;
bottom -= 2;
}
/* Restrict left/top to even values to keep the Bayer pattern. */
crop->left &= ~1;
crop->top &= ~1;
crop->left = clamp_t(u32, crop->left, left, right - PREV_MIN_OUT_WIDTH);
crop->top = clamp_t(u32, crop->top, top, bottom - PREV_MIN_OUT_HEIGHT);
crop->width = clamp_t(u32, crop->width, PREV_MIN_OUT_WIDTH,
right - crop->left);
crop->height = clamp_t(u32, crop->height, PREV_MIN_OUT_HEIGHT,
bottom - crop->top);
}
/*
* preview_enum_mbus_code - Handle pixel format enumeration
* @sd : pointer to v4l2 subdev structure
* @sd_state: V4L2 subdev state
* @code : pointer to v4l2_subdev_mbus_code_enum structure
* return -EINVAL or zero on success
*/
static int preview_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
switch (code->pad) {
case PREV_PAD_SINK:
if (code->index >= ARRAY_SIZE(preview_input_fmts))
return -EINVAL;
code->code = preview_input_fmts[code->index];
break;
case PREV_PAD_SOURCE:
if (code->index >= ARRAY_SIZE(preview_output_fmts))
return -EINVAL;
code->code = preview_output_fmts[code->index];
break;
default:
return -EINVAL;
}
return 0;
}
static int preview_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt format;
if (fse->index != 0)
return -EINVAL;
format.code = fse->code;
format.width = 1;
format.height = 1;
preview_try_format(prev, sd_state, fse->pad, &format, fse->which);
fse->min_width = format.width;
fse->min_height = format.height;
if (format.code != fse->code)
return -EINVAL;
format.code = fse->code;
format.width = -1;
format.height = -1;
preview_try_format(prev, sd_state, fse->pad, &format, fse->which);
fse->max_width = format.width;
fse->max_height = format.height;
return 0;
}
/*
* preview_get_selection - Retrieve a selection rectangle on a pad
* @sd: ISP preview V4L2 subdevice
* @sd_state: V4L2 subdev state
* @sel: Selection rectangle
*
* The only supported rectangles are the crop rectangles on the sink pad.
*
* Return 0 on success or a negative error code otherwise.
*/
static int preview_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *format;
if (sel->pad != PREV_PAD_SINK)
return -EINVAL;
switch (sel->target) {
case V4L2_SEL_TGT_CROP_BOUNDS:
sel->r.left = 0;
sel->r.top = 0;
sel->r.width = INT_MAX;
sel->r.height = INT_MAX;
format = __preview_get_format(prev, sd_state, PREV_PAD_SINK,
sel->which);
preview_try_crop(prev, format, &sel->r);
break;
case V4L2_SEL_TGT_CROP:
sel->r = *__preview_get_crop(prev, sd_state, sel->which);
break;
default:
return -EINVAL;
}
return 0;
}
/*
* preview_set_selection - Set a selection rectangle on a pad
* @sd: ISP preview V4L2 subdevice
* @sd_state: V4L2 subdev state
* @sel: Selection rectangle
*
* The only supported rectangle is the actual crop rectangle on the sink pad.
*
* Return 0 on success or a negative error code otherwise.
*/
static int preview_set_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *format;
if (sel->target != V4L2_SEL_TGT_CROP ||
sel->pad != PREV_PAD_SINK)
return -EINVAL;
/* The crop rectangle can't be changed while streaming. */
if (prev->state != ISP_PIPELINE_STREAM_STOPPED)
return -EBUSY;
/* Modifying the crop rectangle always changes the format on the source
* pad. If the KEEP_CONFIG flag is set, just return the current crop
* rectangle.
*/
if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) {
sel->r = *__preview_get_crop(prev, sd_state, sel->which);
return 0;
}
format = __preview_get_format(prev, sd_state, PREV_PAD_SINK,
sel->which);
preview_try_crop(prev, format, &sel->r);
*__preview_get_crop(prev, sd_state, sel->which) = sel->r;
/* Update the source format. */
format = __preview_get_format(prev, sd_state, PREV_PAD_SOURCE,
sel->which);
preview_try_format(prev, sd_state, PREV_PAD_SOURCE, format,
sel->which);
return 0;
}
/*
* preview_get_format - Handle get format by pads subdev method
* @sd : pointer to v4l2 subdev structure
* @sd_state: V4L2 subdev state
* @fmt: pointer to v4l2 subdev format structure
* return -EINVAL or zero on success
*/
static int preview_get_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *format;
format = __preview_get_format(prev, sd_state, fmt->pad, fmt->which);
if (format == NULL)
return -EINVAL;
fmt->format = *format;
return 0;
}
/*
* preview_set_format - Handle set format by pads subdev method
* @sd : pointer to v4l2 subdev structure
* @sd_state: V4L2 subdev state
* @fmt: pointer to v4l2 subdev format structure
* return -EINVAL or zero on success
*/
static int preview_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
struct v4l2_mbus_framefmt *format;
struct v4l2_rect *crop;
format = __preview_get_format(prev, sd_state, fmt->pad, fmt->which);
if (format == NULL)
return -EINVAL;
preview_try_format(prev, sd_state, fmt->pad, &fmt->format, fmt->which);
*format = fmt->format;
/* Propagate the format from sink to source */
if (fmt->pad == PREV_PAD_SINK) {
/* Reset the crop rectangle. */
crop = __preview_get_crop(prev, sd_state, fmt->which);
crop->left = 0;
crop->top = 0;
crop->width = fmt->format.width;
crop->height = fmt->format.height;
preview_try_crop(prev, &fmt->format, crop);
/* Update the source format. */
format = __preview_get_format(prev, sd_state, PREV_PAD_SOURCE,
fmt->which);
preview_try_format(prev, sd_state, PREV_PAD_SOURCE, format,
fmt->which);
}
return 0;
}
/*
* preview_init_formats - Initialize formats on all pads
* @sd: ISP preview V4L2 subdevice
* @fh: V4L2 subdev file handle
*
* Initialize all pad formats with default values. If fh is not NULL, try
* formats are initialized on the file handle. Otherwise active formats are
* initialized on the device.
*/
static int preview_init_formats(struct v4l2_subdev *sd,
struct v4l2_subdev_fh *fh)
{
struct v4l2_subdev_format format;
memset(&format, 0, sizeof(format));
format.pad = PREV_PAD_SINK;
format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
format.format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
format.format.width = 4096;
format.format.height = 4096;
preview_set_format(sd, fh ? fh->state : NULL, &format);
return 0;
}
/* subdev core operations */
static const struct v4l2_subdev_core_ops preview_v4l2_core_ops = {
.ioctl = preview_ioctl,
};
/* subdev video operations */
static const struct v4l2_subdev_video_ops preview_v4l2_video_ops = {
.s_stream = preview_set_stream,
};
/* subdev pad operations */
static const struct v4l2_subdev_pad_ops preview_v4l2_pad_ops = {
.enum_mbus_code = preview_enum_mbus_code,
.enum_frame_size = preview_enum_frame_size,
.get_fmt = preview_get_format,
.set_fmt = preview_set_format,
.get_selection = preview_get_selection,
.set_selection = preview_set_selection,
};
/* subdev operations */
static const struct v4l2_subdev_ops preview_v4l2_ops = {
.core = &preview_v4l2_core_ops,
.video = &preview_v4l2_video_ops,
.pad = &preview_v4l2_pad_ops,
};
/* subdev internal operations */
static const struct v4l2_subdev_internal_ops preview_v4l2_internal_ops = {
.open = preview_init_formats,
};
/* -----------------------------------------------------------------------------
* Media entity operations
*/
/*
* preview_link_setup - Setup previewer connections.
* @entity : Pointer to media entity structure
* @local : Pointer to local pad array
* @remote : Pointer to remote pad array
* @flags : Link flags
* return -EINVAL or zero on success
*/
static int preview_link_setup(struct media_entity *entity,
const struct media_pad *local,
const struct media_pad *remote, u32 flags)
{
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
struct isp_prev_device *prev = v4l2_get_subdevdata(sd);
unsigned int index = local->index;
/* FIXME: this is actually a hack! */
if (is_media_entity_v4l2_subdev(remote->entity))
index |= 2 << 16;
switch (index) {
case PREV_PAD_SINK:
/* read from memory */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (prev->input == PREVIEW_INPUT_CCDC)
return -EBUSY;
prev->input = PREVIEW_INPUT_MEMORY;
} else {
if (prev->input == PREVIEW_INPUT_MEMORY)
prev->input = PREVIEW_INPUT_NONE;
}
break;
case PREV_PAD_SINK | 2 << 16:
/* read from ccdc */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (prev->input == PREVIEW_INPUT_MEMORY)
return -EBUSY;
prev->input = PREVIEW_INPUT_CCDC;
} else {
if (prev->input == PREVIEW_INPUT_CCDC)
prev->input = PREVIEW_INPUT_NONE;
}
break;
/*
* The ISP core doesn't support pipelines with multiple video outputs.
* Revisit this when it will be implemented, and return -EBUSY for now.
*/
case PREV_PAD_SOURCE:
/* write to memory */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (prev->output & ~PREVIEW_OUTPUT_MEMORY)
return -EBUSY;
prev->output |= PREVIEW_OUTPUT_MEMORY;
} else {
prev->output &= ~PREVIEW_OUTPUT_MEMORY;
}
break;
case PREV_PAD_SOURCE | 2 << 16:
/* write to resizer */
if (flags & MEDIA_LNK_FL_ENABLED) {
if (prev->output & ~PREVIEW_OUTPUT_RESIZER)
return -EBUSY;
prev->output |= PREVIEW_OUTPUT_RESIZER;
} else {
prev->output &= ~PREVIEW_OUTPUT_RESIZER;
}
break;
default:
return -EINVAL;
}
return 0;
}
/* media operations */
static const struct media_entity_operations preview_media_ops = {
.link_setup = preview_link_setup,
.link_validate = v4l2_subdev_link_validate,
};
void omap3isp_preview_unregister_entities(struct isp_prev_device *prev)
{
v4l2_device_unregister_subdev(&prev->subdev);
omap3isp_video_unregister(&prev->video_in);
omap3isp_video_unregister(&prev->video_out);
}
int omap3isp_preview_register_entities(struct isp_prev_device *prev,
struct v4l2_device *vdev)
{
int ret;
/* Register the subdev and video nodes. */
prev->subdev.dev = vdev->mdev->dev;
ret = v4l2_device_register_subdev(vdev, &prev->subdev);
if (ret < 0)
goto error;
ret = omap3isp_video_register(&prev->video_in, vdev);
if (ret < 0)
goto error;
ret = omap3isp_video_register(&prev->video_out, vdev);
if (ret < 0)
goto error;
return 0;
error:
omap3isp_preview_unregister_entities(prev);
return ret;
}
/* -----------------------------------------------------------------------------
* ISP previewer initialisation and cleanup
*/
/*
* preview_init_entities - Initialize subdev and media entity.
* @prev : Pointer to preview structure
* return -ENOMEM or zero on success
*/
static int preview_init_entities(struct isp_prev_device *prev)
{
struct v4l2_subdev *sd = &prev->subdev;
struct media_pad *pads = prev->pads;
struct media_entity *me = &sd->entity;
int ret;
prev->input = PREVIEW_INPUT_NONE;
v4l2_subdev_init(sd, &preview_v4l2_ops);
sd->internal_ops = &preview_v4l2_internal_ops;
strscpy(sd->name, "OMAP3 ISP preview", sizeof(sd->name));
sd->grp_id = 1 << 16; /* group ID for isp subdevs */
v4l2_set_subdevdata(sd, prev);
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
v4l2_ctrl_handler_init(&prev->ctrls, 2);
v4l2_ctrl_new_std(&prev->ctrls, &preview_ctrl_ops, V4L2_CID_BRIGHTNESS,
ISPPRV_BRIGHT_LOW, ISPPRV_BRIGHT_HIGH,
ISPPRV_BRIGHT_STEP, ISPPRV_BRIGHT_DEF);
v4l2_ctrl_new_std(&prev->ctrls, &preview_ctrl_ops, V4L2_CID_CONTRAST,
ISPPRV_CONTRAST_LOW, ISPPRV_CONTRAST_HIGH,
ISPPRV_CONTRAST_STEP, ISPPRV_CONTRAST_DEF);
v4l2_ctrl_handler_setup(&prev->ctrls);
sd->ctrl_handler = &prev->ctrls;
pads[PREV_PAD_SINK].flags = MEDIA_PAD_FL_SINK
| MEDIA_PAD_FL_MUST_CONNECT;
pads[PREV_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
me->ops = &preview_media_ops;
ret = media_entity_pads_init(me, PREV_PADS_NUM, pads);
if (ret < 0)
goto error_handler_free;
preview_init_formats(sd, NULL);
/* According to the OMAP34xx TRM, video buffers need to be aligned on a
* 32 bytes boundary. However, an undocumented hardware bug requires a
* 64 bytes boundary at the preview engine input.
*/
prev->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
prev->video_in.ops = &preview_video_ops;
prev->video_in.isp = to_isp_device(prev);
prev->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3;
prev->video_in.bpl_alignment = 64;
prev->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
prev->video_out.ops = &preview_video_ops;
prev->video_out.isp = to_isp_device(prev);
prev->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 2 * 3;
prev->video_out.bpl_alignment = 32;
ret = omap3isp_video_init(&prev->video_in, "preview");
if (ret < 0)
goto error_video_in;
ret = omap3isp_video_init(&prev->video_out, "preview");
if (ret < 0)
goto error_video_out;
return 0;
error_video_out:
omap3isp_video_cleanup(&prev->video_in);
error_video_in:
media_entity_cleanup(&prev->subdev.entity);
error_handler_free:
v4l2_ctrl_handler_free(&prev->ctrls);
return ret;
}
/*
* omap3isp_preview_init - Previewer initialization.
* @isp : Pointer to ISP device
* return -ENOMEM or zero on success
*/
int omap3isp_preview_init(struct isp_device *isp)
{
struct isp_prev_device *prev = &isp->isp_prev;
init_waitqueue_head(&prev->wait);
preview_init_params(prev);
return preview_init_entities(prev);
}
void omap3isp_preview_cleanup(struct isp_device *isp)
{
struct isp_prev_device *prev = &isp->isp_prev;
v4l2_ctrl_handler_free(&prev->ctrls);
omap3isp_video_cleanup(&prev->video_in);
omap3isp_video_cleanup(&prev->video_out);
media_entity_cleanup(&prev->subdev.entity);
}
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