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gpu: ipu-v3: Add Camera Sensor Interface unit

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Adds the Camera Sensor Interface (CSI) unit required for video capture.

Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>

Removed the unused clk_get_rate in ipu_csi_init_interface and the
ipu_csi_ccir_err_detection_enable/disable functions.
Checkpatch cleanup.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Steve Longerbeam 2014-08-19 10:52:40 -07:00 committed by Philipp Zabel
parent c2d670fd3b
commit 2ffd48f2e7
5 changed files with 810 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/ipu-v3/Makefile
View File

@ -1,4 +1,4 @@
obj-$(CONFIG_IMX_IPUV3_CORE) += imx-ipu-v3.o
imx-ipu-v3-objs := ipu-common.o ipu-cpmem.o ipu-dc.o ipu-di.o \
imx-ipu-v3-objs := ipu-common.o ipu-cpmem.o ipu-csi.o ipu-dc.o ipu-di.o \
ipu-dp.o ipu-dmfc.o ipu-smfc.o

44
drivers/gpu/ipu-v3/ipu-common.c
View File

@ -217,18 +217,6 @@ int ipu_module_disable(struct ipu_soc *ipu, u32 mask)
}
EXPORT_SYMBOL_GPL(ipu_module_disable);
int ipu_csi_enable(struct ipu_soc *ipu, int csi)
{
return ipu_module_enable(ipu, csi ? IPU_CONF_CSI1_EN : IPU_CONF_CSI0_EN);
}
EXPORT_SYMBOL_GPL(ipu_csi_enable);
int ipu_csi_disable(struct ipu_soc *ipu, int csi)
{
return ipu_module_disable(ipu, csi ? IPU_CONF_CSI1_EN : IPU_CONF_CSI0_EN);
}
EXPORT_SYMBOL_GPL(ipu_csi_disable);
int ipu_smfc_enable(struct ipu_soc *ipu)
{
return ipu_module_enable(ipu, IPU_CONF_SMFC_EN);
@ -439,6 +427,8 @@ struct ipu_devtype {
unsigned long cpmem_ofs;
unsigned long srm_ofs;
unsigned long tpm_ofs;
unsigned long csi0_ofs;
unsigned long csi1_ofs;
unsigned long disp0_ofs;
unsigned long disp1_ofs;
unsigned long dc_tmpl_ofs;
@ -452,6 +442,8 @@ static struct ipu_devtype ipu_type_imx51 = {
.cpmem_ofs = 0x1f000000,
.srm_ofs = 0x1f040000,
.tpm_ofs = 0x1f060000,
.csi0_ofs = 0x1f030000,
.csi1_ofs = 0x1f038000,
.disp0_ofs = 0x1e040000,
.disp1_ofs = 0x1e048000,
.dc_tmpl_ofs = 0x1f080000,
@ -465,6 +457,8 @@ static struct ipu_devtype ipu_type_imx53 = {
.cpmem_ofs = 0x07000000,
.srm_ofs = 0x07040000,
.tpm_ofs = 0x07060000,
.csi0_ofs = 0x07030000,
.csi1_ofs = 0x07038000,
.disp0_ofs = 0x06040000,
.disp1_ofs = 0x06048000,
.dc_tmpl_ofs = 0x07080000,
@ -478,6 +472,8 @@ static struct ipu_devtype ipu_type_imx6q = {
.cpmem_ofs = 0x00300000,
.srm_ofs = 0x00340000,
.tpm_ofs = 0x00360000,
.csi0_ofs = 0x00230000,
.csi1_ofs = 0x00238000,
.disp0_ofs = 0x00240000,
.disp1_ofs = 0x00248000,
.dc_tmpl_ofs = 0x00380000,
@ -508,6 +504,20 @@ static int ipu_submodules_init(struct ipu_soc *ipu,
goto err_cpmem;
}
ret = ipu_csi_init(ipu, dev, 0, ipu_base + devtype->csi0_ofs,
IPU_CONF_CSI0_EN, ipu_clk);
if (ret) {
unit = "csi0";
goto err_csi_0;
}
ret = ipu_csi_init(ipu, dev, 1, ipu_base + devtype->csi1_ofs,
IPU_CONF_CSI1_EN, ipu_clk);
if (ret) {
unit = "csi1";
goto err_csi_1;
}
ret = ipu_di_init(ipu, dev, 0, ipu_base + devtype->disp0_ofs,
IPU_CONF_DI0_EN, ipu_clk);
if (ret) {
@ -562,6 +572,10 @@ err_dc:
err_di_1:
ipu_di_exit(ipu, 0);
err_di_0:
ipu_csi_exit(ipu, 1);
err_csi_1:
ipu_csi_exit(ipu, 0);
err_csi_0:
ipu_cpmem_exit(ipu);
err_cpmem:
dev_err(&pdev->dev, "init %s failed with %d\n", unit, ret);
@ -640,6 +654,8 @@ static void ipu_submodules_exit(struct ipu_soc *ipu)
ipu_dc_exit(ipu);
ipu_di_exit(ipu, 1);
ipu_di_exit(ipu, 0);
ipu_csi_exit(ipu, 1);
ipu_csi_exit(ipu, 0);
ipu_cpmem_exit(ipu);
}
@ -859,6 +875,10 @@ static int ipu_probe(struct platform_device *pdev)
ipu_base + devtype->cm_ofs + IPU_CM_IDMAC_REG_OFS);
dev_dbg(&pdev->dev, "cpmem: 0x%08lx\n",
ipu_base + devtype->cpmem_ofs);
dev_dbg(&pdev->dev, "csi0: 0x%08lx\n",
ipu_base + devtype->csi0_ofs);
dev_dbg(&pdev->dev, "csi1: 0x%08lx\n",
ipu_base + devtype->csi1_ofs);
dev_dbg(&pdev->dev, "disp0: 0x%08lx\n",
ipu_base + devtype->disp0_ofs);
dev_dbg(&pdev->dev, "disp1: 0x%08lx\n",

741
drivers/gpu/ipu-v3/ipu-csi.c Normal file
View File

@ -0,0 +1,741 @@
/*
* Copyright (C) 2012-2014 Mentor Graphics Inc.
* Copyright (C) 2005-2009 Freescale Semiconductor, 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.
*/
#include <linux/export.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/videodev2.h>
#include <uapi/linux/v4l2-mediabus.h>
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/clkdev.h>
#include "ipu-prv.h"
struct ipu_csi {
void __iomem *base;
int id;
u32 module;
struct clk *clk_ipu; /* IPU bus clock */
spinlock_t lock;
bool inuse;
struct ipu_soc *ipu;
};
/* CSI Register Offsets */
#define CSI_SENS_CONF 0x0000
#define CSI_SENS_FRM_SIZE 0x0004
#define CSI_ACT_FRM_SIZE 0x0008
#define CSI_OUT_FRM_CTRL 0x000c
#define CSI_TST_CTRL 0x0010
#define CSI_CCIR_CODE_1 0x0014
#define CSI_CCIR_CODE_2 0x0018
#define CSI_CCIR_CODE_3 0x001c
#define CSI_MIPI_DI 0x0020
#define CSI_SKIP 0x0024
#define CSI_CPD_CTRL 0x0028
#define CSI_CPD_RC(n) (0x002c + ((n)*4))
#define CSI_CPD_RS(n) (0x004c + ((n)*4))
#define CSI_CPD_GRC(n) (0x005c + ((n)*4))
#define CSI_CPD_GRS(n) (0x007c + ((n)*4))
#define CSI_CPD_GBC(n) (0x008c + ((n)*4))
#define CSI_CPD_GBS(n) (0x00Ac + ((n)*4))
#define CSI_CPD_BC(n) (0x00Bc + ((n)*4))
#define CSI_CPD_BS(n) (0x00Dc + ((n)*4))
#define CSI_CPD_OFFSET1 0x00ec
#define CSI_CPD_OFFSET2 0x00f0
/* CSI Register Fields */
#define CSI_SENS_CONF_DATA_FMT_SHIFT 8
#define CSI_SENS_CONF_DATA_FMT_MASK 0x00000700
#define CSI_SENS_CONF_DATA_FMT_RGB_YUV444 0L
#define CSI_SENS_CONF_DATA_FMT_YUV422_YUYV 1L
#define CSI_SENS_CONF_DATA_FMT_YUV422_UYVY 2L
#define CSI_SENS_CONF_DATA_FMT_BAYER 3L
#define CSI_SENS_CONF_DATA_FMT_RGB565 4L
#define CSI_SENS_CONF_DATA_FMT_RGB555 5L
#define CSI_SENS_CONF_DATA_FMT_RGB444 6L
#define CSI_SENS_CONF_DATA_FMT_JPEG 7L
#define CSI_SENS_CONF_VSYNC_POL_SHIFT 0
#define CSI_SENS_CONF_HSYNC_POL_SHIFT 1
#define CSI_SENS_CONF_DATA_POL_SHIFT 2
#define CSI_SENS_CONF_PIX_CLK_POL_SHIFT 3
#define CSI_SENS_CONF_SENS_PRTCL_MASK 0x00000070
#define CSI_SENS_CONF_SENS_PRTCL_SHIFT 4
#define CSI_SENS_CONF_PACK_TIGHT_SHIFT 7
#define CSI_SENS_CONF_DATA_WIDTH_SHIFT 11
#define CSI_SENS_CONF_EXT_VSYNC_SHIFT 15
#define CSI_SENS_CONF_DIVRATIO_SHIFT 16
#define CSI_SENS_CONF_DIVRATIO_MASK 0x00ff0000
#define CSI_SENS_CONF_DATA_DEST_SHIFT 24
#define CSI_SENS_CONF_DATA_DEST_MASK 0x07000000
#define CSI_SENS_CONF_JPEG8_EN_SHIFT 27
#define CSI_SENS_CONF_JPEG_EN_SHIFT 28
#define CSI_SENS_CONF_FORCE_EOF_SHIFT 29
#define CSI_SENS_CONF_DATA_EN_POL_SHIFT 31
#define CSI_DATA_DEST_IC 2
#define CSI_DATA_DEST_IDMAC 4
#define CSI_CCIR_ERR_DET_EN 0x01000000
#define CSI_HORI_DOWNSIZE_EN 0x80000000
#define CSI_VERT_DOWNSIZE_EN 0x40000000
#define CSI_TEST_GEN_MODE_EN 0x01000000
#define CSI_HSC_MASK 0x1fff0000
#define CSI_HSC_SHIFT 16
#define CSI_VSC_MASK 0x00000fff
#define CSI_VSC_SHIFT 0
#define CSI_TEST_GEN_R_MASK 0x000000ff
#define CSI_TEST_GEN_R_SHIFT 0
#define CSI_TEST_GEN_G_MASK 0x0000ff00
#define CSI_TEST_GEN_G_SHIFT 8
#define CSI_TEST_GEN_B_MASK 0x00ff0000
#define CSI_TEST_GEN_B_SHIFT 16
#define CSI_MAX_RATIO_SKIP_SMFC_MASK 0x00000007
#define CSI_MAX_RATIO_SKIP_SMFC_SHIFT 0
#define CSI_SKIP_SMFC_MASK 0x000000f8
#define CSI_SKIP_SMFC_SHIFT 3
#define CSI_ID_2_SKIP_MASK 0x00000300
#define CSI_ID_2_SKIP_SHIFT 8
#define CSI_COLOR_FIRST_ROW_MASK 0x00000002
#define CSI_COLOR_FIRST_COMP_MASK 0x00000001
/* MIPI CSI-2 data types */
#define MIPI_DT_YUV420 0x18 /* YYY.../UYVY.... */
#define MIPI_DT_YUV420_LEGACY 0x1a /* UYY.../VYY... */
#define MIPI_DT_YUV422 0x1e /* UYVY... */
#define MIPI_DT_RGB444 0x20
#define MIPI_DT_RGB555 0x21
#define MIPI_DT_RGB565 0x22
#define MIPI_DT_RGB666 0x23
#define MIPI_DT_RGB888 0x24
#define MIPI_DT_RAW6 0x28
#define MIPI_DT_RAW7 0x29
#define MIPI_DT_RAW8 0x2a
#define MIPI_DT_RAW10 0x2b
#define MIPI_DT_RAW12 0x2c
#define MIPI_DT_RAW14 0x2d
/*
* Bitfield of CSI bus signal polarities and modes.
*/
struct ipu_csi_bus_config {
unsigned data_width:4;
unsigned clk_mode:3;
unsigned ext_vsync:1;
unsigned vsync_pol:1;
unsigned hsync_pol:1;
unsigned pixclk_pol:1;
unsigned data_pol:1;
unsigned sens_clksrc:1;
unsigned pack_tight:1;
unsigned force_eof:1;
unsigned data_en_pol:1;
unsigned data_fmt;
unsigned mipi_dt;
};
/*
* Enumeration of CSI data bus widths.
*/
enum ipu_csi_data_width {
IPU_CSI_DATA_WIDTH_4 = 0,
IPU_CSI_DATA_WIDTH_8 = 1,
IPU_CSI_DATA_WIDTH_10 = 3,
IPU_CSI_DATA_WIDTH_12 = 5,
IPU_CSI_DATA_WIDTH_16 = 9,
};
/*
* Enumeration of CSI clock modes.
*/
enum ipu_csi_clk_mode {
IPU_CSI_CLK_MODE_GATED_CLK,
IPU_CSI_CLK_MODE_NONGATED_CLK,
IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE,
IPU_CSI_CLK_MODE_CCIR656_INTERLACED,
IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR,
IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR,
IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR,
IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR,
};
static inline u32 ipu_csi_read(struct ipu_csi *csi, unsigned offset)
{
return readl(csi->base + offset);
}
static inline void ipu_csi_write(struct ipu_csi *csi, u32 value,
unsigned offset)
{
writel(value, csi->base + offset);
}
/*
* Set mclk division ratio for generating test mode mclk. Only used
* for test generator.
*/
static int ipu_csi_set_testgen_mclk(struct ipu_csi *csi, u32 pixel_clk,
u32 ipu_clk)
{
u32 temp;
u32 div_ratio;
div_ratio = (ipu_clk / pixel_clk) - 1;
if (div_ratio > 0xFF || div_ratio < 0) {
dev_err(csi->ipu->dev,
"value of pixel_clk extends normal range\n");
return -EINVAL;
}
temp = ipu_csi_read(csi, CSI_SENS_CONF);
temp &= ~CSI_SENS_CONF_DIVRATIO_MASK;
ipu_csi_write(csi, temp | (div_ratio << CSI_SENS_CONF_DIVRATIO_SHIFT),
CSI_SENS_CONF);
return 0;
}
/*
* Find the CSI data format and data width for the given V4L2 media
* bus pixel format code.
*/
static int mbus_code_to_bus_cfg(struct ipu_csi_bus_config *cfg, u32 mbus_code)
{
switch (mbus_code) {
case V4L2_MBUS_FMT_BGR565_2X8_BE:
case V4L2_MBUS_FMT_BGR565_2X8_LE:
case V4L2_MBUS_FMT_RGB565_2X8_BE:
case V4L2_MBUS_FMT_RGB565_2X8_LE:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB565;
cfg->mipi_dt = MIPI_DT_RGB565;
cfg->data_width = IPU_CSI_DATA_WIDTH_8;
break;
case V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE:
case V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB444;
cfg->mipi_dt = MIPI_DT_RGB444;
cfg->data_width = IPU_CSI_DATA_WIDTH_8;
break;
case V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE:
case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_RGB555;
cfg->mipi_dt = MIPI_DT_RGB555;
cfg->data_width = IPU_CSI_DATA_WIDTH_8;
break;
case V4L2_MBUS_FMT_UYVY8_2X8:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_UYVY;
cfg->mipi_dt = MIPI_DT_YUV422;
cfg->data_width = IPU_CSI_DATA_WIDTH_8;
break;
case V4L2_MBUS_FMT_YUYV8_2X8:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_YUYV;
cfg->mipi_dt = MIPI_DT_YUV422;
cfg->data_width = IPU_CSI_DATA_WIDTH_8;
break;
case V4L2_MBUS_FMT_UYVY8_1X16:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_UYVY;
cfg->mipi_dt = MIPI_DT_YUV422;
cfg->data_width = IPU_CSI_DATA_WIDTH_16;
break;
case V4L2_MBUS_FMT_YUYV8_1X16:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_YUV422_YUYV;
cfg->mipi_dt = MIPI_DT_YUV422;
cfg->data_width = IPU_CSI_DATA_WIDTH_16;
break;
case V4L2_MBUS_FMT_SBGGR8_1X8:
case V4L2_MBUS_FMT_SGBRG8_1X8:
case V4L2_MBUS_FMT_SGRBG8_1X8:
case V4L2_MBUS_FMT_SRGGB8_1X8:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
cfg->mipi_dt = MIPI_DT_RAW8;
cfg->data_width = IPU_CSI_DATA_WIDTH_8;
break;
case V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8:
case V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8:
case V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8:
case V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8:
case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE:
case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE:
case V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
cfg->mipi_dt = MIPI_DT_RAW10;
cfg->data_width = IPU_CSI_DATA_WIDTH_8;
break;
case V4L2_MBUS_FMT_SBGGR10_1X10:
case V4L2_MBUS_FMT_SGBRG10_1X10:
case V4L2_MBUS_FMT_SGRBG10_1X10:
case V4L2_MBUS_FMT_SRGGB10_1X10:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
cfg->mipi_dt = MIPI_DT_RAW10;
cfg->data_width = IPU_CSI_DATA_WIDTH_10;
break;
case V4L2_MBUS_FMT_SBGGR12_1X12:
case V4L2_MBUS_FMT_SGBRG12_1X12:
case V4L2_MBUS_FMT_SGRBG12_1X12:
case V4L2_MBUS_FMT_SRGGB12_1X12:
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_BAYER;
cfg->mipi_dt = MIPI_DT_RAW12;
cfg->data_width = IPU_CSI_DATA_WIDTH_12;
break;
case V4L2_MBUS_FMT_JPEG_1X8:
/* TODO */
cfg->data_fmt = CSI_SENS_CONF_DATA_FMT_JPEG;
cfg->mipi_dt = MIPI_DT_RAW8;
cfg->data_width = IPU_CSI_DATA_WIDTH_8;
break;
default:
return -EINVAL;
}
return 0;
}
/*
* Fill a CSI bus config struct from mbus_config and mbus_framefmt.
*/
static void fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
struct v4l2_mbus_config *mbus_cfg,
struct v4l2_mbus_framefmt *mbus_fmt)
{
memset(csicfg, 0, sizeof(*csicfg));
mbus_code_to_bus_cfg(csicfg, mbus_fmt->code);
switch (mbus_cfg->type) {
case V4L2_MBUS_PARALLEL:
csicfg->ext_vsync = 1;
csicfg->vsync_pol = (mbus_cfg->flags &
V4L2_MBUS_VSYNC_ACTIVE_LOW) ? 1 : 0;
csicfg->hsync_pol = (mbus_cfg->flags &
V4L2_MBUS_HSYNC_ACTIVE_LOW) ? 1 : 0;
csicfg->pixclk_pol = (mbus_cfg->flags &
V4L2_MBUS_PCLK_SAMPLE_FALLING) ? 1 : 0;
csicfg->clk_mode = IPU_CSI_CLK_MODE_GATED_CLK;
break;
case V4L2_MBUS_BT656:
csicfg->ext_vsync = 0;
if (V4L2_FIELD_HAS_BOTH(mbus_fmt->field))
csicfg->clk_mode = IPU_CSI_CLK_MODE_CCIR656_INTERLACED;
else
csicfg->clk_mode = IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE;
break;
case V4L2_MBUS_CSI2:
/*
* MIPI CSI-2 requires non gated clock mode, all other
* parameters are not applicable for MIPI CSI-2 bus.
*/
csicfg->clk_mode = IPU_CSI_CLK_MODE_NONGATED_CLK;
break;
default:
/* will never get here, keep compiler quiet */
break;
}
}
int ipu_csi_init_interface(struct ipu_csi *csi,
struct v4l2_mbus_config *mbus_cfg,
struct v4l2_mbus_framefmt *mbus_fmt)
{
struct ipu_csi_bus_config cfg;
unsigned long flags;
u32 data = 0;
fill_csi_bus_cfg(&cfg, mbus_cfg, mbus_fmt);
/* Set the CSI_SENS_CONF register remaining fields */
data |= cfg.data_width << CSI_SENS_CONF_DATA_WIDTH_SHIFT |
cfg.data_fmt << CSI_SENS_CONF_DATA_FMT_SHIFT |
cfg.data_pol << CSI_SENS_CONF_DATA_POL_SHIFT |
cfg.vsync_pol << CSI_SENS_CONF_VSYNC_POL_SHIFT |
cfg.hsync_pol << CSI_SENS_CONF_HSYNC_POL_SHIFT |
cfg.pixclk_pol << CSI_SENS_CONF_PIX_CLK_POL_SHIFT |
cfg.ext_vsync << CSI_SENS_CONF_EXT_VSYNC_SHIFT |
cfg.clk_mode << CSI_SENS_CONF_SENS_PRTCL_SHIFT |
cfg.pack_tight << CSI_SENS_CONF_PACK_TIGHT_SHIFT |
cfg.force_eof << CSI_SENS_CONF_FORCE_EOF_SHIFT |
cfg.data_en_pol << CSI_SENS_CONF_DATA_EN_POL_SHIFT;
spin_lock_irqsave(&csi->lock, flags);
ipu_csi_write(csi, data, CSI_SENS_CONF);
/* Setup sensor frame size */
ipu_csi_write(csi,
(mbus_fmt->width - 1) | ((mbus_fmt->height - 1) << 16),
CSI_SENS_FRM_SIZE);
/* Set CCIR registers */
switch (cfg.clk_mode) {
case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE:
ipu_csi_write(csi, 0x40030, CSI_CCIR_CODE_1);
ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
break;
case IPU_CSI_CLK_MODE_CCIR656_INTERLACED:
if (mbus_fmt->width == 720 && mbus_fmt->height == 576) {
/*
* PAL case
*
* Field0BlankEnd = 0x6, Field0BlankStart = 0x2,
* Field0ActiveEnd = 0x4, Field0ActiveStart = 0
* Field1BlankEnd = 0x7, Field1BlankStart = 0x3,
* Field1ActiveEnd = 0x5, Field1ActiveStart = 0x1
*/
ipu_csi_write(csi, 0x40596 | CSI_CCIR_ERR_DET_EN,
CSI_CCIR_CODE_1);
ipu_csi_write(csi, 0xD07DF, CSI_CCIR_CODE_2);
ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
} else if (mbus_fmt->width == 720 && mbus_fmt->height == 480) {
/*
* NTSC case
*
* Field0BlankEnd = 0x7, Field0BlankStart = 0x3,
* Field0ActiveEnd = 0x5, Field0ActiveStart = 0x1
* Field1BlankEnd = 0x6, Field1BlankStart = 0x2,
* Field1ActiveEnd = 0x4, Field1ActiveStart = 0
*/
ipu_csi_write(csi, 0xD07DF | CSI_CCIR_ERR_DET_EN,
CSI_CCIR_CODE_1);
ipu_csi_write(csi, 0x40596, CSI_CCIR_CODE_2);
ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
} else {
dev_err(csi->ipu->dev,
"Unsupported CCIR656 interlaced video mode\n");
spin_unlock_irqrestore(&csi->lock, flags);
return -EINVAL;
}
break;
case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR:
case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR:
case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR:
case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR:
ipu_csi_write(csi, 0x40030 | CSI_CCIR_ERR_DET_EN,
CSI_CCIR_CODE_1);
ipu_csi_write(csi, 0xFF0000, CSI_CCIR_CODE_3);
break;
case IPU_CSI_CLK_MODE_GATED_CLK:
case IPU_CSI_CLK_MODE_NONGATED_CLK:
ipu_csi_write(csi, 0, CSI_CCIR_CODE_1);
break;
}
dev_dbg(csi->ipu->dev, "CSI_SENS_CONF = 0x%08X\n",
ipu_csi_read(csi, CSI_SENS_CONF));
dev_dbg(csi->ipu->dev, "CSI_ACT_FRM_SIZE = 0x%08X\n",
ipu_csi_read(csi, CSI_ACT_FRM_SIZE));
spin_unlock_irqrestore(&csi->lock, flags);
return 0;
}
EXPORT_SYMBOL_GPL(ipu_csi_init_interface);
bool ipu_csi_is_interlaced(struct ipu_csi *csi)
{
unsigned long flags;
u32 sensor_protocol;
spin_lock_irqsave(&csi->lock, flags);
sensor_protocol =
(ipu_csi_read(csi, CSI_SENS_CONF) &
CSI_SENS_CONF_SENS_PRTCL_MASK) >>
CSI_SENS_CONF_SENS_PRTCL_SHIFT;
spin_unlock_irqrestore(&csi->lock, flags);
switch (sensor_protocol) {
case IPU_CSI_CLK_MODE_GATED_CLK:
case IPU_CSI_CLK_MODE_NONGATED_CLK:
case IPU_CSI_CLK_MODE_CCIR656_PROGRESSIVE:
case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_DDR:
case IPU_CSI_CLK_MODE_CCIR1120_PROGRESSIVE_SDR:
return false;
case IPU_CSI_CLK_MODE_CCIR656_INTERLACED:
case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_DDR:
case IPU_CSI_CLK_MODE_CCIR1120_INTERLACED_SDR:
return true;
default:
dev_err(csi->ipu->dev,
"CSI %d sensor protocol unsupported\n", csi->id);
return false;
}
}
EXPORT_SYMBOL_GPL(ipu_csi_is_interlaced);
void ipu_csi_get_window(struct ipu_csi *csi, struct v4l2_rect *w)
{
unsigned long flags;
u32 reg;
spin_lock_irqsave(&csi->lock, flags);
reg = ipu_csi_read(csi, CSI_ACT_FRM_SIZE);
w->width = (reg & 0xFFFF) + 1;
w->height = (reg >> 16 & 0xFFFF) + 1;
reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL);
w->left = (reg & CSI_HSC_MASK) >> CSI_HSC_SHIFT;
w->top = (reg & CSI_VSC_MASK) >> CSI_VSC_SHIFT;
spin_unlock_irqrestore(&csi->lock, flags);
}
EXPORT_SYMBOL_GPL(ipu_csi_get_window);
void ipu_csi_set_window(struct ipu_csi *csi, struct v4l2_rect *w)
{
unsigned long flags;
u32 reg;
spin_lock_irqsave(&csi->lock, flags);
ipu_csi_write(csi, (w->width - 1) | ((w->height - 1) << 16),
CSI_ACT_FRM_SIZE);
reg = ipu_csi_read(csi, CSI_OUT_FRM_CTRL);
reg &= ~(CSI_HSC_MASK | CSI_VSC_MASK);
reg |= ((w->top << CSI_VSC_SHIFT) | (w->left << CSI_HSC_SHIFT));
ipu_csi_write(csi, reg, CSI_OUT_FRM_CTRL);
spin_unlock_irqrestore(&csi->lock, flags);
}
EXPORT_SYMBOL_GPL(ipu_csi_set_window);
void ipu_csi_set_test_generator(struct ipu_csi *csi, bool active,
u32 r_value, u32 g_value, u32 b_value,
u32 pix_clk)
{
unsigned long flags;
u32 ipu_clk = clk_get_rate(csi->clk_ipu);
u32 temp;
spin_lock_irqsave(&csi->lock, flags);
temp = ipu_csi_read(csi, CSI_TST_CTRL);
if (active == false) {
temp &= ~CSI_TEST_GEN_MODE_EN;
ipu_csi_write(csi, temp, CSI_TST_CTRL);
} else {
/* Set sensb_mclk div_ratio */
ipu_csi_set_testgen_mclk(csi, pix_clk, ipu_clk);
temp &= ~(CSI_TEST_GEN_R_MASK | CSI_TEST_GEN_G_MASK |
CSI_TEST_GEN_B_MASK);
temp |= CSI_TEST_GEN_MODE_EN;
temp |= (r_value << CSI_TEST_GEN_R_SHIFT) |
(g_value << CSI_TEST_GEN_G_SHIFT) |
(b_value << CSI_TEST_GEN_B_SHIFT);
ipu_csi_write(csi, temp, CSI_TST_CTRL);
}
spin_unlock_irqrestore(&csi->lock, flags);
}
EXPORT_SYMBOL_GPL(ipu_csi_set_test_generator);
int ipu_csi_set_mipi_datatype(struct ipu_csi *csi, u32 vc,
struct v4l2_mbus_framefmt *mbus_fmt)
{
struct ipu_csi_bus_config cfg;
unsigned long flags;
u32 temp;
if (vc > 3)
return -EINVAL;
mbus_code_to_bus_cfg(&cfg, mbus_fmt->code);
spin_lock_irqsave(&csi->lock, flags);
temp = ipu_csi_read(csi, CSI_MIPI_DI);
temp &= ~(0xff << (vc * 8));
temp |= (cfg.mipi_dt << (vc * 8));
ipu_csi_write(csi, temp, CSI_MIPI_DI);
spin_unlock_irqrestore(&csi->lock, flags);
return 0;
}
EXPORT_SYMBOL_GPL(ipu_csi_set_mipi_datatype);
int ipu_csi_set_skip_smfc(struct ipu_csi *csi, u32 skip,
u32 max_ratio, u32 id)
{
unsigned long flags;
u32 temp;
if (max_ratio > 5 || id > 3)
return -EINVAL;
spin_lock_irqsave(&csi->lock, flags);
temp = ipu_csi_read(csi, CSI_SKIP);
temp &= ~(CSI_MAX_RATIO_SKIP_SMFC_MASK | CSI_ID_2_SKIP_MASK |
CSI_SKIP_SMFC_MASK);
temp |= (max_ratio << CSI_MAX_RATIO_SKIP_SMFC_SHIFT) |
(id << CSI_ID_2_SKIP_SHIFT) |
(skip << CSI_SKIP_SMFC_SHIFT);
ipu_csi_write(csi, temp, CSI_SKIP);
spin_unlock_irqrestore(&csi->lock, flags);
return 0;
}
EXPORT_SYMBOL_GPL(ipu_csi_set_skip_smfc);
int ipu_csi_set_dest(struct ipu_csi *csi, enum ipu_csi_dest csi_dest)
{
unsigned long flags;
u32 csi_sens_conf, dest;
if (csi_dest == IPU_CSI_DEST_IDMAC)
dest = CSI_DATA_DEST_IDMAC;
else
dest = CSI_DATA_DEST_IC; /* IC or VDIC */
spin_lock_irqsave(&csi->lock, flags);
csi_sens_conf = ipu_csi_read(csi, CSI_SENS_CONF);
csi_sens_conf &= ~CSI_SENS_CONF_DATA_DEST_MASK;
csi_sens_conf |= (dest << CSI_SENS_CONF_DATA_DEST_SHIFT);
ipu_csi_write(csi, csi_sens_conf, CSI_SENS_CONF);
spin_unlock_irqrestore(&csi->lock, flags);
return 0;
}
EXPORT_SYMBOL_GPL(ipu_csi_set_dest);
int ipu_csi_enable(struct ipu_csi *csi)
{
ipu_module_enable(csi->ipu, csi->module);
return 0;
}
EXPORT_SYMBOL_GPL(ipu_csi_enable);
int ipu_csi_disable(struct ipu_csi *csi)
{
ipu_module_disable(csi->ipu, csi->module);
return 0;
}
EXPORT_SYMBOL_GPL(ipu_csi_disable);
struct ipu_csi *ipu_csi_get(struct ipu_soc *ipu, int id)
{
unsigned long flags;
struct ipu_csi *csi, *ret;
if (id > 1)
return ERR_PTR(-EINVAL);
csi = ipu->csi_priv[id];
ret = csi;
spin_lock_irqsave(&csi->lock, flags);
if (csi->inuse) {
ret = ERR_PTR(-EBUSY);
goto unlock;
}
csi->inuse = true;
unlock:
spin_unlock_irqrestore(&csi->lock, flags);
return ret;
}
EXPORT_SYMBOL_GPL(ipu_csi_get);
void ipu_csi_put(struct ipu_csi *csi)
{
unsigned long flags;
spin_lock_irqsave(&csi->lock, flags);
csi->inuse = false;
spin_unlock_irqrestore(&csi->lock, flags);
}
EXPORT_SYMBOL_GPL(ipu_csi_put);
int ipu_csi_init(struct ipu_soc *ipu, struct device *dev, int id,
unsigned long base, u32 module, struct clk *clk_ipu)
{
struct ipu_csi *csi;
if (id > 1)
return -ENODEV;
csi = devm_kzalloc(dev, sizeof(*csi), GFP_KERNEL);
if (!csi)
return -ENOMEM;
ipu->csi_priv[id] = csi;
spin_lock_init(&csi->lock);
csi->module = module;
csi->id = id;
csi->clk_ipu = clk_ipu;
csi->base = devm_ioremap(dev, base, PAGE_SIZE);
if (!csi->base)
return -ENOMEM;
dev_dbg(dev, "CSI%d base: 0x%08lx remapped to %p\n",
id, base, csi->base);
csi->ipu = ipu;
return 0;
}
void ipu_csi_exit(struct ipu_soc *ipu, int id)
{
}
void ipu_csi_dump(struct ipu_csi *csi)
{
dev_dbg(csi->ipu->dev, "CSI_SENS_CONF: %08x\n",
ipu_csi_read(csi, CSI_SENS_CONF));
dev_dbg(csi->ipu->dev, "CSI_SENS_FRM_SIZE: %08x\n",
ipu_csi_read(csi, CSI_SENS_FRM_SIZE));
dev_dbg(csi->ipu->dev, "CSI_ACT_FRM_SIZE: %08x\n",
ipu_csi_read(csi, CSI_ACT_FRM_SIZE));
dev_dbg(csi->ipu->dev, "CSI_OUT_FRM_CTRL: %08x\n",
ipu_csi_read(csi, CSI_OUT_FRM_CTRL));
dev_dbg(csi->ipu->dev, "CSI_TST_CTRL: %08x\n",
ipu_csi_read(csi, CSI_TST_CTRL));
dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_1: %08x\n",
ipu_csi_read(csi, CSI_CCIR_CODE_1));
dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_2: %08x\n",
ipu_csi_read(csi, CSI_CCIR_CODE_2));
dev_dbg(csi->ipu->dev, "CSI_CCIR_CODE_3: %08x\n",
ipu_csi_read(csi, CSI_CCIR_CODE_3));
dev_dbg(csi->ipu->dev, "CSI_MIPI_DI: %08x\n",
ipu_csi_read(csi, CSI_MIPI_DI));
dev_dbg(csi->ipu->dev, "CSI_SKIP: %08x\n",
ipu_csi_read(csi, CSI_SKIP));
}
EXPORT_SYMBOL_GPL(ipu_csi_dump);

6
drivers/gpu/ipu-v3/ipu-prv.h
View File

@ -157,6 +157,7 @@ struct ipuv3_channel {
};
struct ipu_cpmem;
struct ipu_csi;
struct ipu_dc_priv;
struct ipu_dmfc_priv;
struct ipu_di;
@ -189,6 +190,7 @@ struct ipu_soc {
struct ipu_dp_priv *dp_priv;
struct ipu_dmfc_priv *dmfc_priv;
struct ipu_di *di_priv[2];
struct ipu_csi *csi_priv[2];
struct ipu_smfc_priv *smfc_priv;
};
@ -211,6 +213,10 @@ int ipu_module_disable(struct ipu_soc *ipu, u32 mask);
bool ipu_idmac_channel_busy(struct ipu_soc *ipu, unsigned int chno);
int ipu_wait_interrupt(struct ipu_soc *ipu, int irq, int ms);
int ipu_csi_init(struct ipu_soc *ipu, struct device *dev, int id,
unsigned long base, u32 module, struct clk *clk_ipu);
void ipu_csi_exit(struct ipu_soc *ipu, int id);
int ipu_di_init(struct ipu_soc *ipu, struct device *dev, int id,
unsigned long base, u32 module, struct clk *ipu_clk);
void ipu_di_exit(struct ipu_soc *ipu, int id);

32
include/video/imx-ipu-v3.h
View File

@ -16,6 +16,7 @@
#include <linux/videodev2.h>
#include <linux/bitmap.h>
#include <linux/fb.h>
#include <media/v4l2-mediabus.h>
struct ipu_soc;
@ -61,6 +62,15 @@ struct ipu_di_signal_cfg {
u8 vsync_pin;
};
/*
* Enumeration of CSI destinations
*/
enum ipu_csi_dest {
IPU_CSI_DEST_IDMAC, /* to memory via SMFC */
IPU_CSI_DEST_IC, /* to Image Converter */
IPU_CSI_DEST_VDIC, /* to VDIC */
};
enum ipu_color_space {
IPUV3_COLORSPACE_RGB,
IPUV3_COLORSPACE_YUV,
@ -211,8 +221,26 @@ int ipu_dp_set_global_alpha(struct ipu_dp *dp, bool enable, u8 alpha,
/*
* IPU CMOS Sensor Interface (csi) functions
*/
int ipu_csi_enable(struct ipu_soc *ipu, int csi);
int ipu_csi_disable(struct ipu_soc *ipu, int csi);
struct ipu_csi;
int ipu_csi_init_interface(struct ipu_csi *csi,
struct v4l2_mbus_config *mbus_cfg,
struct v4l2_mbus_framefmt *mbus_fmt);
bool ipu_csi_is_interlaced(struct ipu_csi *csi);
void ipu_csi_get_window(struct ipu_csi *csi, struct v4l2_rect *w);
void ipu_csi_set_window(struct ipu_csi *csi, struct v4l2_rect *w);
void ipu_csi_set_test_generator(struct ipu_csi *csi, bool active,
u32 r_value, u32 g_value, u32 b_value,
u32 pix_clk);
int ipu_csi_set_mipi_datatype(struct ipu_csi *csi, u32 vc,
struct v4l2_mbus_framefmt *mbus_fmt);
int ipu_csi_set_skip_smfc(struct ipu_csi *csi, u32 skip,
u32 max_ratio, u32 id);
int ipu_csi_set_dest(struct ipu_csi *csi, enum ipu_csi_dest csi_dest);
int ipu_csi_enable(struct ipu_csi *csi);
int ipu_csi_disable(struct ipu_csi *csi);
struct ipu_csi *ipu_csi_get(struct ipu_soc *ipu, int id);
void ipu_csi_put(struct ipu_csi *csi);
void ipu_csi_dump(struct ipu_csi *csi);
/*
* IPU Sensor Multiple FIFO Controller (SMFC) functions