From 2ffd48f2e7ae06c3d7b2bcde9a0cb211d1a32468 Mon Sep 17 00:00:00 2001 From: Steve Longerbeam Date: Tue, 19 Aug 2014 10:52:40 -0700 Subject: [PATCH] gpu: ipu-v3: Add Camera Sensor Interface unit Adds the Camera Sensor Interface (CSI) unit required for video capture. Signed-off-by: Steve Longerbeam 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 --- drivers/gpu/ipu-v3/Makefile | 2 +- drivers/gpu/ipu-v3/ipu-common.c | 44 +- drivers/gpu/ipu-v3/ipu-csi.c | 741 ++++++++++++++++++++++++++++++++ drivers/gpu/ipu-v3/ipu-prv.h | 6 + include/video/imx-ipu-v3.h | 32 +- 5 files changed, 810 insertions(+), 15 deletions(-) create mode 100644 drivers/gpu/ipu-v3/ipu-csi.c diff --git a/drivers/gpu/ipu-v3/Makefile b/drivers/gpu/ipu-v3/Makefile index 0b42836caae1..d22bd06caa6d 100644 --- a/drivers/gpu/ipu-v3/Makefile +++ b/drivers/gpu/ipu-v3/Makefile @@ -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 diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c index cae543115856..511c364231a2 100644 --- a/drivers/gpu/ipu-v3/ipu-common.c +++ b/drivers/gpu/ipu-v3/ipu-common.c @@ -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", diff --git a/drivers/gpu/ipu-v3/ipu-csi.c b/drivers/gpu/ipu-v3/ipu-csi.c new file mode 100644 index 000000000000..d6f56471bd2a --- /dev/null +++ b/drivers/gpu/ipu-v3/ipu-csi.c @@ -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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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); diff --git a/drivers/gpu/ipu-v3/ipu-prv.h b/drivers/gpu/ipu-v3/ipu-prv.h index 1a5c55c05fe8..9b274f1259e1 100644 --- a/drivers/gpu/ipu-v3/ipu-prv.h +++ b/drivers/gpu/ipu-v3/ipu-prv.h @@ -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); diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h index f80fe13b0d4d..6d254275192b 100644 --- a/include/video/imx-ipu-v3.h +++ b/include/video/imx-ipu-v3.h @@ -16,6 +16,7 @@ #include #include #include +#include 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 -- 2.20.1