/* * ispccp2.c * * TI OMAP3 ISP - CCP2 module * * Copyright (C) 2010 Nokia Corporation * Copyright (C) 2010 Texas Instruments, Inc. * * Contacts: Laurent Pinchart * Sakari Ailus * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA */ #include #include #include #include #include #include #include #include "isp.h" #include "ispreg.h" #include "ispccp2.h" /* Number of LCX channels */ #define CCP2_LCx_CHANS_NUM 3 /* Max/Min size for CCP2 video port */ #define ISPCCP2_DAT_START_MIN 0 #define ISPCCP2_DAT_START_MAX 4095 #define ISPCCP2_DAT_SIZE_MIN 0 #define ISPCCP2_DAT_SIZE_MAX 4095 #define ISPCCP2_VPCLK_FRACDIV 65536 #define ISPCCP2_LCx_CTRL_FORMAT_RAW8_DPCM10_VP 0x12 #define ISPCCP2_LCx_CTRL_FORMAT_RAW10_VP 0x16 /* Max/Min size for CCP2 memory channel */ #define ISPCCP2_LCM_HSIZE_COUNT_MIN 16 #define ISPCCP2_LCM_HSIZE_COUNT_MAX 8191 #define ISPCCP2_LCM_HSIZE_SKIP_MIN 0 #define ISPCCP2_LCM_HSIZE_SKIP_MAX 8191 #define ISPCCP2_LCM_VSIZE_MIN 1 #define ISPCCP2_LCM_VSIZE_MAX 8191 #define ISPCCP2_LCM_HWORDS_MIN 1 #define ISPCCP2_LCM_HWORDS_MAX 4095 #define ISPCCP2_LCM_CTRL_BURST_SIZE_32X 5 #define ISPCCP2_LCM_CTRL_READ_THROTTLE_FULL 0 #define ISPCCP2_LCM_CTRL_SRC_DECOMPR_DPCM10 2 #define ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW8 2 #define ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW10 3 #define ISPCCP2_LCM_CTRL_DST_FORMAT_RAW10 3 #define ISPCCP2_LCM_CTRL_DST_PORT_VP 0 #define ISPCCP2_LCM_CTRL_DST_PORT_MEM 1 /* Set only the required bits */ #define BIT_SET(var, shift, mask, val) \ do { \ var = ((var) & ~((mask) << (shift))) \ | ((val) << (shift)); \ } while (0) /* * ccp2_print_status - Print current CCP2 module register values. */ #define CCP2_PRINT_REGISTER(isp, name)\ dev_dbg(isp->dev, "###CCP2 " #name "=0x%08x\n", \ isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_##name)) static void ccp2_print_status(struct isp_ccp2_device *ccp2) { struct isp_device *isp = to_isp_device(ccp2); dev_dbg(isp->dev, "-------------CCP2 Register dump-------------\n"); CCP2_PRINT_REGISTER(isp, SYSCONFIG); CCP2_PRINT_REGISTER(isp, SYSSTATUS); CCP2_PRINT_REGISTER(isp, LC01_IRQENABLE); CCP2_PRINT_REGISTER(isp, LC01_IRQSTATUS); CCP2_PRINT_REGISTER(isp, LC23_IRQENABLE); CCP2_PRINT_REGISTER(isp, LC23_IRQSTATUS); CCP2_PRINT_REGISTER(isp, LCM_IRQENABLE); CCP2_PRINT_REGISTER(isp, LCM_IRQSTATUS); CCP2_PRINT_REGISTER(isp, CTRL); CCP2_PRINT_REGISTER(isp, LCx_CTRL(0)); CCP2_PRINT_REGISTER(isp, LCx_CODE(0)); CCP2_PRINT_REGISTER(isp, LCx_STAT_START(0)); CCP2_PRINT_REGISTER(isp, LCx_STAT_SIZE(0)); CCP2_PRINT_REGISTER(isp, LCx_SOF_ADDR(0)); CCP2_PRINT_REGISTER(isp, LCx_EOF_ADDR(0)); CCP2_PRINT_REGISTER(isp, LCx_DAT_START(0)); CCP2_PRINT_REGISTER(isp, LCx_DAT_SIZE(0)); CCP2_PRINT_REGISTER(isp, LCx_DAT_PING_ADDR(0)); CCP2_PRINT_REGISTER(isp, LCx_DAT_PONG_ADDR(0)); CCP2_PRINT_REGISTER(isp, LCx_DAT_OFST(0)); CCP2_PRINT_REGISTER(isp, LCM_CTRL); CCP2_PRINT_REGISTER(isp, LCM_VSIZE); CCP2_PRINT_REGISTER(isp, LCM_HSIZE); CCP2_PRINT_REGISTER(isp, LCM_PREFETCH); CCP2_PRINT_REGISTER(isp, LCM_SRC_ADDR); CCP2_PRINT_REGISTER(isp, LCM_SRC_OFST); CCP2_PRINT_REGISTER(isp, LCM_DST_ADDR); CCP2_PRINT_REGISTER(isp, LCM_DST_OFST); dev_dbg(isp->dev, "--------------------------------------------\n"); } /* * ccp2_reset - Reset the CCP2 * @ccp2: pointer to ISP CCP2 device */ static void ccp2_reset(struct isp_ccp2_device *ccp2) { struct isp_device *isp = to_isp_device(ccp2); int i = 0; /* Reset the CSI1/CCP2B and wait for reset to complete */ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSCONFIG, ISPCCP2_SYSCONFIG_SOFT_RESET); while (!(isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSSTATUS) & ISPCCP2_SYSSTATUS_RESET_DONE)) { udelay(10); if (i++ > 10) { /* try read 10 times */ dev_warn(isp->dev, "omap3_isp: timeout waiting for ccp2 reset\n"); break; } } } /* * ccp2_pwr_cfg - Configure the power mode settings * @ccp2: pointer to ISP CCP2 device */ static void ccp2_pwr_cfg(struct isp_ccp2_device *ccp2) { struct isp_device *isp = to_isp_device(ccp2); isp_reg_writel(isp, ISPCCP2_SYSCONFIG_MSTANDBY_MODE_SMART | ((isp->revision == ISP_REVISION_15_0 && isp->autoidle) ? ISPCCP2_SYSCONFIG_AUTO_IDLE : 0), OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSCONFIG); } /* * ccp2_if_enable - Enable CCP2 interface. * @ccp2: pointer to ISP CCP2 device * @enable: enable/disable flag */ static void ccp2_if_enable(struct isp_ccp2_device *ccp2, u8 enable) { struct isp_device *isp = to_isp_device(ccp2); struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity); int i; if (enable && ccp2->vdds_csib) regulator_enable(ccp2->vdds_csib); /* Enable/Disable all the LCx channels */ for (i = 0; i < CCP2_LCx_CHANS_NUM; i++) isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(i), ISPCCP2_LCx_CTRL_CHAN_EN, enable ? ISPCCP2_LCx_CTRL_CHAN_EN : 0); /* Enable/Disable ccp2 interface in ccp2 mode */ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL, ISPCCP2_CTRL_MODE | ISPCCP2_CTRL_IF_EN, enable ? (ISPCCP2_CTRL_MODE | ISPCCP2_CTRL_IF_EN) : 0); /* For frame count propagation */ if (pipe->do_propagation) { /* We may want the Frame Start IRQ from LC0 */ if (enable) isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQENABLE, ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ); else isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQENABLE, ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ); } if (!enable && ccp2->vdds_csib) regulator_disable(ccp2->vdds_csib); } /* * ccp2_mem_enable - Enable CCP2 memory interface. * @ccp2: pointer to ISP CCP2 device * @enable: enable/disable flag */ static void ccp2_mem_enable(struct isp_ccp2_device *ccp2, u8 enable) { struct isp_device *isp = to_isp_device(ccp2); if (enable) ccp2_if_enable(ccp2, 0); /* Enable/Disable ccp2 interface in ccp2 mode */ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL, ISPCCP2_CTRL_MODE, enable ? ISPCCP2_CTRL_MODE : 0); isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_CTRL, ISPCCP2_LCM_CTRL_CHAN_EN, enable ? ISPCCP2_LCM_CTRL_CHAN_EN : 0); } /* * ccp2_phyif_config - Initialize CCP2 phy interface config * @ccp2: Pointer to ISP CCP2 device * @config: CCP2 platform data * * Configure the CCP2 physical interface module from platform data. * * Returns -EIO if strobe is chosen in CSI1 mode, or 0 on success. */ static int ccp2_phyif_config(struct isp_ccp2_device *ccp2, const struct isp_ccp2_platform_data *pdata) { struct isp_device *isp = to_isp_device(ccp2); u32 val; /* CCP2B mode */ val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL) | ISPCCP2_CTRL_IO_OUT_SEL | ISPCCP2_CTRL_MODE; /* Data/strobe physical layer */ BIT_SET(val, ISPCCP2_CTRL_PHY_SEL_SHIFT, ISPCCP2_CTRL_PHY_SEL_MASK, pdata->phy_layer); BIT_SET(val, ISPCCP2_CTRL_INV_SHIFT, ISPCCP2_CTRL_INV_MASK, pdata->strobe_clk_pol); isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL); val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL); if (!(val & ISPCCP2_CTRL_MODE)) { if (pdata->ccp2_mode == ISP_CCP2_MODE_CCP2) dev_warn(isp->dev, "OMAP3 CCP2 bus not available\n"); if (pdata->phy_layer == ISP_CCP2_PHY_DATA_STROBE) /* Strobe mode requires CCP2 */ return -EIO; } return 0; } /* * ccp2_vp_config - Initialize CCP2 video port interface. * @ccp2: Pointer to ISP CCP2 device * @vpclk_div: Video port divisor * * Configure the CCP2 video port with the given clock divisor. The valid divisor * values depend on the ISP revision: * * - revision 1.0 and 2.0 1 to 4 * - revision 15.0 1 to 65536 * * The exact divisor value used might differ from the requested value, as ISP * revision 15.0 represent the divisor by 65536 divided by an integer. */ static void ccp2_vp_config(struct isp_ccp2_device *ccp2, unsigned int vpclk_div) { struct isp_device *isp = to_isp_device(ccp2); u32 val; /* ISPCCP2_CTRL Video port */ val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL); val |= ISPCCP2_CTRL_VP_ONLY_EN; /* Disable the memory write port */ if (isp->revision == ISP_REVISION_15_0) { vpclk_div = clamp_t(unsigned int, vpclk_div, 1, 65536); vpclk_div = min(ISPCCP2_VPCLK_FRACDIV / vpclk_div, 65535U); BIT_SET(val, ISPCCP2_CTRL_VPCLK_DIV_SHIFT, ISPCCP2_CTRL_VPCLK_DIV_MASK, vpclk_div); } else { vpclk_div = clamp_t(unsigned int, vpclk_div, 1, 4); BIT_SET(val, ISPCCP2_CTRL_VP_OUT_CTRL_SHIFT, ISPCCP2_CTRL_VP_OUT_CTRL_MASK, vpclk_div - 1); } isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL); } /* * ccp2_lcx_config - Initialize CCP2 logical channel interface. * @ccp2: Pointer to ISP CCP2 device * @config: Pointer to ISP LCx config structure. * * This will analyze the parameters passed by the interface config * and configure CSI1/CCP2 logical channel * */ static void ccp2_lcx_config(struct isp_ccp2_device *ccp2, struct isp_interface_lcx_config *config) { struct isp_device *isp = to_isp_device(ccp2); u32 val, format; switch (config->format) { case V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8: format = ISPCCP2_LCx_CTRL_FORMAT_RAW8_DPCM10_VP; break; case V4L2_MBUS_FMT_SGRBG10_1X10: default: format = ISPCCP2_LCx_CTRL_FORMAT_RAW10_VP; /* RAW10+VP */ break; } /* ISPCCP2_LCx_CTRL logical channel #0 */ val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(0)) | (ISPCCP2_LCx_CTRL_REGION_EN); /* Region */ if (isp->revision == ISP_REVISION_15_0) { /* CRC */ BIT_SET(val, ISPCCP2_LCx_CTRL_CRC_SHIFT_15_0, ISPCCP2_LCx_CTRL_CRC_MASK, config->crc); /* Format = RAW10+VP or RAW8+DPCM10+VP*/ BIT_SET(val, ISPCCP2_LCx_CTRL_FORMAT_SHIFT_15_0, ISPCCP2_LCx_CTRL_FORMAT_MASK_15_0, format); } else { BIT_SET(val, ISPCCP2_LCx_CTRL_CRC_SHIFT, ISPCCP2_LCx_CTRL_CRC_MASK, config->crc); BIT_SET(val, ISPCCP2_LCx_CTRL_FORMAT_SHIFT, ISPCCP2_LCx_CTRL_FORMAT_MASK, format); } isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(0)); /* ISPCCP2_DAT_START for logical channel #0 */ isp_reg_writel(isp, config->data_start << ISPCCP2_LCx_DAT_SHIFT, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_DAT_START(0)); /* ISPCCP2_DAT_SIZE for logical channel #0 */ isp_reg_writel(isp, config->data_size << ISPCCP2_LCx_DAT_SHIFT, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_DAT_SIZE(0)); /* Enable error IRQs for logical channel #0 */ val = ISPCCP2_LC01_IRQSTATUS_LC0_FIFO_OVF_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_CRC_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_FSP_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_FW_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_FSC_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_SSC_IRQ; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQSTATUS); isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQENABLE, val); } /* * ccp2_if_configure - Configure ccp2 with data from sensor * @ccp2: Pointer to ISP CCP2 device * * Return 0 on success or a negative error code */ static int ccp2_if_configure(struct isp_ccp2_device *ccp2) { const struct isp_v4l2_subdevs_group *pdata; struct v4l2_mbus_framefmt *format; struct media_pad *pad; struct v4l2_subdev *sensor; u32 lines = 0; int ret; ccp2_pwr_cfg(ccp2); pad = media_entity_remote_source(&ccp2->pads[CCP2_PAD_SINK]); sensor = media_entity_to_v4l2_subdev(pad->entity); pdata = sensor->host_priv; ret = ccp2_phyif_config(ccp2, &pdata->bus.ccp2); if (ret < 0) return ret; ccp2_vp_config(ccp2, pdata->bus.ccp2.vpclk_div + 1); v4l2_subdev_call(sensor, sensor, g_skip_top_lines, &lines); format = &ccp2->formats[CCP2_PAD_SINK]; ccp2->if_cfg.data_start = lines; ccp2->if_cfg.crc = pdata->bus.ccp2.crc; ccp2->if_cfg.format = format->code; ccp2->if_cfg.data_size = format->height; ccp2_lcx_config(ccp2, &ccp2->if_cfg); return 0; } static int ccp2_adjust_bandwidth(struct isp_ccp2_device *ccp2) { struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity); struct isp_device *isp = to_isp_device(ccp2); const struct v4l2_mbus_framefmt *ofmt = &ccp2->formats[CCP2_PAD_SOURCE]; unsigned long l3_ick = pipe->l3_ick; struct v4l2_fract *timeperframe; unsigned int vpclk_div = 2; unsigned int value; u64 bound; u64 area; /* Compute the minimum clock divisor, 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. */ vpclk_div = max_t(unsigned int, DIV_ROUND_UP(l3_ick, pipe->max_rate), vpclk_div); /* Compute the maximum clock divisor, based on the requested frame rate. * This is a soft lower bound to achieve a frame rate equal or higher * than the requested value, so round the value down. */ timeperframe = &pipe->max_timeperframe; if (timeperframe->numerator) { area = ofmt->width * ofmt->height; bound = div_u64(area * timeperframe->denominator, timeperframe->numerator); value = min_t(u64, bound, l3_ick); vpclk_div = max_t(unsigned int, l3_ick / value, vpclk_div); } dev_dbg(isp->dev, "%s: minimum clock divisor = %u\n", __func__, vpclk_div); return vpclk_div; } /* * ccp2_mem_configure - Initialize CCP2 memory input/output interface * @ccp2: Pointer to ISP CCP2 device * @config: Pointer to ISP mem interface config structure * * This will analyze the parameters passed by the interface config * structure, and configure the respective registers for proper * CSI1/CCP2 memory input. */ static void ccp2_mem_configure(struct isp_ccp2_device *ccp2, struct isp_interface_mem_config *config) { struct isp_device *isp = to_isp_device(ccp2); u32 sink_pixcode = ccp2->formats[CCP2_PAD_SINK].code; u32 source_pixcode = ccp2->formats[CCP2_PAD_SOURCE].code; unsigned int dpcm_decompress = 0; u32 val, hwords; if (sink_pixcode != source_pixcode && sink_pixcode == V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8) dpcm_decompress = 1; ccp2_pwr_cfg(ccp2); /* Hsize, Skip */ isp_reg_writel(isp, ISPCCP2_LCM_HSIZE_SKIP_MIN | (config->hsize_count << ISPCCP2_LCM_HSIZE_SHIFT), OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_HSIZE); /* Vsize, no. of lines */ isp_reg_writel(isp, config->vsize_count << ISPCCP2_LCM_VSIZE_SHIFT, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_VSIZE); if (ccp2->video_in.bpl_padding == 0) config->src_ofst = 0; else config->src_ofst = ccp2->video_in.bpl_value; isp_reg_writel(isp, config->src_ofst, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_SRC_OFST); /* Source and Destination formats */ val = ISPCCP2_LCM_CTRL_DST_FORMAT_RAW10 << ISPCCP2_LCM_CTRL_DST_FORMAT_SHIFT; if (dpcm_decompress) { /* source format is RAW8 */ val |= ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW8 << ISPCCP2_LCM_CTRL_SRC_FORMAT_SHIFT; /* RAW8 + DPCM10 - simple predictor */ val |= ISPCCP2_LCM_CTRL_SRC_DPCM_PRED; /* enable source DPCM decompression */ val |= ISPCCP2_LCM_CTRL_SRC_DECOMPR_DPCM10 << ISPCCP2_LCM_CTRL_SRC_DECOMPR_SHIFT; } else { /* source format is RAW10 */ val |= ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW10 << ISPCCP2_LCM_CTRL_SRC_FORMAT_SHIFT; } /* Burst size to 32x64 */ val |= ISPCCP2_LCM_CTRL_BURST_SIZE_32X << ISPCCP2_LCM_CTRL_BURST_SIZE_SHIFT; isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_CTRL); /* Prefetch setup */ if (dpcm_decompress) hwords = (ISPCCP2_LCM_HSIZE_SKIP_MIN + config->hsize_count) >> 3; else hwords = (ISPCCP2_LCM_HSIZE_SKIP_MIN + config->hsize_count) >> 2; isp_reg_writel(isp, hwords << ISPCCP2_LCM_PREFETCH_SHIFT, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_PREFETCH); /* Video port */ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL, ISPCCP2_CTRL_IO_OUT_SEL | ISPCCP2_CTRL_MODE); ccp2_vp_config(ccp2, ccp2_adjust_bandwidth(ccp2)); /* Clear LCM interrupts */ isp_reg_writel(isp, ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ | ISPCCP2_LCM_IRQSTATUS_EOF_IRQ, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_IRQSTATUS); /* Enable LCM interupts */ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_IRQENABLE, ISPCCP2_LCM_IRQSTATUS_EOF_IRQ | ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ); } /* * ccp2_set_inaddr - Sets memory address of input frame. * @ccp2: Pointer to ISP CCP2 device * @addr: 32bit memory address aligned on 32byte boundary. * * Configures the memory address from which the input frame is to be read. */ static void ccp2_set_inaddr(struct isp_ccp2_device *ccp2, u32 addr) { struct isp_device *isp = to_isp_device(ccp2); isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_SRC_ADDR); } /* ----------------------------------------------------------------------------- * Interrupt handling */ static void ccp2_isr_buffer(struct isp_ccp2_device *ccp2) { struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity); struct isp_buffer *buffer; buffer = omap3isp_video_buffer_next(&ccp2->video_in, ccp2->error); if (buffer != NULL) ccp2_set_inaddr(ccp2, buffer->isp_addr); pipe->state |= ISP_PIPELINE_IDLE_INPUT; if (ccp2->state == ISP_PIPELINE_STREAM_SINGLESHOT) { if (isp_pipeline_ready(pipe)) omap3isp_pipeline_set_stream(pipe, ISP_PIPELINE_STREAM_SINGLESHOT); } ccp2->error = 0; } /* * omap3isp_ccp2_isr - Handle ISP CCP2 interrupts * @ccp2: Pointer to ISP CCP2 device * * This will handle the CCP2 interrupts * * Returns -EIO in case of error, or 0 on success. */ int omap3isp_ccp2_isr(struct isp_ccp2_device *ccp2) { struct isp_device *isp = to_isp_device(ccp2); int ret = 0; static const u32 ISPCCP2_LC01_ERROR = ISPCCP2_LC01_IRQSTATUS_LC0_FIFO_OVF_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_CRC_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_FSP_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_FW_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_FSC_IRQ | ISPCCP2_LC01_IRQSTATUS_LC0_SSC_IRQ; u32 lcx_irqstatus, lcm_irqstatus; /* First clear the interrupts */ lcx_irqstatus = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQSTATUS); isp_reg_writel(isp, lcx_irqstatus, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQSTATUS); lcm_irqstatus = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_IRQSTATUS); isp_reg_writel(isp, lcm_irqstatus, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_IRQSTATUS); /* Errors */ if (lcx_irqstatus & ISPCCP2_LC01_ERROR) { ccp2->error = 1; dev_dbg(isp->dev, "CCP2 err:%x\n", lcx_irqstatus); return -EIO; } if (lcm_irqstatus & ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ) { ccp2->error = 1; dev_dbg(isp->dev, "CCP2 OCP err:%x\n", lcm_irqstatus); ret = -EIO; } if (omap3isp_module_sync_is_stopping(&ccp2->wait, &ccp2->stopping)) return 0; /* Frame number propagation */ if (lcx_irqstatus & ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ) { struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity); if (pipe->do_propagation) atomic_inc(&pipe->frame_number); } /* Handle queued buffers on frame end interrupts */ if (lcm_irqstatus & ISPCCP2_LCM_IRQSTATUS_EOF_IRQ) ccp2_isr_buffer(ccp2); return ret; } /* ----------------------------------------------------------------------------- * V4L2 subdev operations */ static const unsigned int ccp2_fmts[] = { V4L2_MBUS_FMT_SGRBG10_1X10, V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, }; /* * __ccp2_get_format - helper function for getting ccp2 format * @ccp2 : Pointer to ISP CCP2 device * @fh : V4L2 subdev file handle * @pad : pad number * @which : wanted subdev format * return format structure or NULL on error */ static struct v4l2_mbus_framefmt * __ccp2_get_format(struct isp_ccp2_device *ccp2, struct v4l2_subdev_fh *fh, unsigned int pad, enum v4l2_subdev_format_whence which) { if (which == V4L2_SUBDEV_FORMAT_TRY) return v4l2_subdev_get_try_format(fh, pad); else return &ccp2->formats[pad]; } /* * ccp2_try_format - Handle try format by pad subdev method * @ccp2 : Pointer to ISP CCP2 device * @fh : V4L2 subdev file handle * @pad : pad num * @fmt : pointer to v4l2 mbus format structure * @which : wanted subdev format */ static void ccp2_try_format(struct isp_ccp2_device *ccp2, struct v4l2_subdev_fh *fh, unsigned int pad, struct v4l2_mbus_framefmt *fmt, enum v4l2_subdev_format_whence which) { struct v4l2_mbus_framefmt *format; switch (pad) { case CCP2_PAD_SINK: if (fmt->code != V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8) fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10; if (ccp2->input == CCP2_INPUT_SENSOR) { fmt->width = clamp_t(u32, fmt->width, ISPCCP2_DAT_START_MIN, ISPCCP2_DAT_START_MAX); fmt->height = clamp_t(u32, fmt->height, ISPCCP2_DAT_SIZE_MIN, ISPCCP2_DAT_SIZE_MAX); } else if (ccp2->input == CCP2_INPUT_MEMORY) { fmt->width = clamp_t(u32, fmt->width, ISPCCP2_LCM_HSIZE_COUNT_MIN, ISPCCP2_LCM_HSIZE_COUNT_MAX); fmt->height = clamp_t(u32, fmt->height, ISPCCP2_LCM_VSIZE_MIN, ISPCCP2_LCM_VSIZE_MAX); } break; case CCP2_PAD_SOURCE: /* Source format - copy sink format and change pixel code * to SGRBG10_1X10 as we don't support CCP2 write to memory. * When CCP2 write to memory feature will be added this * should be changed properly. */ format = __ccp2_get_format(ccp2, fh, CCP2_PAD_SINK, which); memcpy(fmt, format, sizeof(*fmt)); fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10; break; } fmt->field = V4L2_FIELD_NONE; fmt->colorspace = V4L2_COLORSPACE_SRGB; } /* * ccp2_enum_mbus_code - Handle pixel format enumeration * @sd : pointer to v4l2 subdev structure * @fh : V4L2 subdev file handle * @code : pointer to v4l2_subdev_mbus_code_enum structure * return -EINVAL or zero on success */ static int ccp2_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_mbus_code_enum *code) { struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; if (code->pad == CCP2_PAD_SINK) { if (code->index >= ARRAY_SIZE(ccp2_fmts)) return -EINVAL; code->code = ccp2_fmts[code->index]; } else { if (code->index != 0) return -EINVAL; format = __ccp2_get_format(ccp2, fh, CCP2_PAD_SINK, V4L2_SUBDEV_FORMAT_TRY); code->code = format->code; } return 0; } static int ccp2_enum_frame_size(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_frame_size_enum *fse) { struct isp_ccp2_device *ccp2 = 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; ccp2_try_format(ccp2, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); 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; ccp2_try_format(ccp2, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY); fse->max_width = format.width; fse->max_height = format.height; return 0; } /* * ccp2_get_format - Handle get format by pads subdev method * @sd : pointer to v4l2 subdev structure * @fh : V4L2 subdev file handle * @fmt : pointer to v4l2 subdev format structure * return -EINVAL or zero on success */ static int ccp2_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; format = __ccp2_get_format(ccp2, fh, fmt->pad, fmt->which); if (format == NULL) return -EINVAL; fmt->format = *format; return 0; } /* * ccp2_set_format - Handle set format by pads subdev method * @sd : pointer to v4l2 subdev structure * @fh : V4L2 subdev file handle * @fmt : pointer to v4l2 subdev format structure * returns zero */ static int ccp2_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *format; format = __ccp2_get_format(ccp2, fh, fmt->pad, fmt->which); if (format == NULL) return -EINVAL; ccp2_try_format(ccp2, fh, fmt->pad, &fmt->format, fmt->which); *format = fmt->format; /* Propagate the format from sink to source */ if (fmt->pad == CCP2_PAD_SINK) { format = __ccp2_get_format(ccp2, fh, CCP2_PAD_SOURCE, fmt->which); *format = fmt->format; ccp2_try_format(ccp2, fh, CCP2_PAD_SOURCE, format, fmt->which); } return 0; } /* * ccp2_init_formats - Initialize formats on all pads * @sd: ISP CCP2 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 ccp2_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) { struct v4l2_subdev_format format; memset(&format, 0, sizeof(format)); format.pad = CCP2_PAD_SINK; format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10; format.format.width = 4096; format.format.height = 4096; ccp2_set_format(sd, fh, &format); return 0; } /* * ccp2_s_stream - Enable/Disable streaming on ccp2 subdev * @sd : pointer to v4l2 subdev structure * @enable: 1 == Enable, 0 == Disable * return zero */ static int ccp2_s_stream(struct v4l2_subdev *sd, int enable) { struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); struct isp_device *isp = to_isp_device(ccp2); struct device *dev = to_device(ccp2); int ret; if (ccp2->state == ISP_PIPELINE_STREAM_STOPPED) { if (enable == ISP_PIPELINE_STREAM_STOPPED) return 0; atomic_set(&ccp2->stopping, 0); ccp2->error = 0; } switch (enable) { case ISP_PIPELINE_STREAM_CONTINUOUS: if (ccp2->phy) { ret = omap3isp_csiphy_acquire(ccp2->phy); if (ret < 0) return ret; } ccp2_if_configure(ccp2); ccp2_print_status(ccp2); /* Enable CSI1/CCP2 interface */ ccp2_if_enable(ccp2, 1); break; case ISP_PIPELINE_STREAM_SINGLESHOT: if (ccp2->state != ISP_PIPELINE_STREAM_SINGLESHOT) { struct v4l2_mbus_framefmt *format; format = &ccp2->formats[CCP2_PAD_SINK]; ccp2->mem_cfg.hsize_count = format->width; ccp2->mem_cfg.vsize_count = format->height; ccp2->mem_cfg.src_ofst = 0; ccp2_mem_configure(ccp2, &ccp2->mem_cfg); omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CSI1_READ); ccp2_print_status(ccp2); } ccp2_mem_enable(ccp2, 1); break; case ISP_PIPELINE_STREAM_STOPPED: if (omap3isp_module_sync_idle(&sd->entity, &ccp2->wait, &ccp2->stopping)) dev_dbg(dev, "%s: module stop timeout.\n", sd->name); if (ccp2->input == CCP2_INPUT_MEMORY) { ccp2_mem_enable(ccp2, 0); omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CSI1_READ); } else if (ccp2->input == CCP2_INPUT_SENSOR) { /* Disable CSI1/CCP2 interface */ ccp2_if_enable(ccp2, 0); if (ccp2->phy) omap3isp_csiphy_release(ccp2->phy); } break; } ccp2->state = enable; return 0; } /* subdev video operations */ static const struct v4l2_subdev_video_ops ccp2_sd_video_ops = { .s_stream = ccp2_s_stream, }; /* subdev pad operations */ static const struct v4l2_subdev_pad_ops ccp2_sd_pad_ops = { .enum_mbus_code = ccp2_enum_mbus_code, .enum_frame_size = ccp2_enum_frame_size, .get_fmt = ccp2_get_format, .set_fmt = ccp2_set_format, }; /* subdev operations */ static const struct v4l2_subdev_ops ccp2_sd_ops = { .video = &ccp2_sd_video_ops, .pad = &ccp2_sd_pad_ops, }; /* subdev internal operations */ static const struct v4l2_subdev_internal_ops ccp2_sd_internal_ops = { .open = ccp2_init_formats, }; /* -------------------------------------------------------------------------- * ISP ccp2 video device node */ /* * ccp2_video_queue - Queue video buffer. * @video : Pointer to isp video structure * @buffer: Pointer to isp_buffer structure * return -EIO or zero on success */ static int ccp2_video_queue(struct isp_video *video, struct isp_buffer *buffer) { struct isp_ccp2_device *ccp2 = &video->isp->isp_ccp2; ccp2_set_inaddr(ccp2, buffer->isp_addr); return 0; } static const struct isp_video_operations ccp2_video_ops = { .queue = ccp2_video_queue, }; /* ----------------------------------------------------------------------------- * Media entity operations */ /* * ccp2_link_setup - Setup ccp2 connections. * @entity : Pointer to media entity structure * @local : Pointer to local pad array * @remote : Pointer to remote pad array * @flags : Link flags * return -EINVAL on error or zero on success */ static int ccp2_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_ccp2_device *ccp2 = v4l2_get_subdevdata(sd); switch (local->index | media_entity_type(remote->entity)) { case CCP2_PAD_SINK | MEDIA_ENT_T_DEVNODE: /* read from memory */ if (flags & MEDIA_LNK_FL_ENABLED) { if (ccp2->input == CCP2_INPUT_SENSOR) return -EBUSY; ccp2->input = CCP2_INPUT_MEMORY; } else { if (ccp2->input == CCP2_INPUT_MEMORY) ccp2->input = CCP2_INPUT_NONE; } break; case CCP2_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV: /* read from sensor/phy */ if (flags & MEDIA_LNK_FL_ENABLED) { if (ccp2->input == CCP2_INPUT_MEMORY) return -EBUSY; ccp2->input = CCP2_INPUT_SENSOR; } else { if (ccp2->input == CCP2_INPUT_SENSOR) ccp2->input = CCP2_INPUT_NONE; } break; case CCP2_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV: /* write to video port/ccdc */ if (flags & MEDIA_LNK_FL_ENABLED) ccp2->output = CCP2_OUTPUT_CCDC; else ccp2->output = CCP2_OUTPUT_NONE; break; default: return -EINVAL; } return 0; } /* media operations */ static const struct media_entity_operations ccp2_media_ops = { .link_setup = ccp2_link_setup, }; /* * omap3isp_ccp2_unregister_entities - Unregister media entities: subdev * @ccp2: Pointer to ISP CCP2 device */ void omap3isp_ccp2_unregister_entities(struct isp_ccp2_device *ccp2) { v4l2_device_unregister_subdev(&ccp2->subdev); omap3isp_video_unregister(&ccp2->video_in); } /* * omap3isp_ccp2_register_entities - Register the subdev media entity * @ccp2: Pointer to ISP CCP2 device * @vdev: Pointer to v4l device * return negative error code or zero on success */ int omap3isp_ccp2_register_entities(struct isp_ccp2_device *ccp2, struct v4l2_device *vdev) { int ret; /* Register the subdev and video nodes. */ ret = v4l2_device_register_subdev(vdev, &ccp2->subdev); if (ret < 0) goto error; ret = omap3isp_video_register(&ccp2->video_in, vdev); if (ret < 0) goto error; return 0; error: omap3isp_ccp2_unregister_entities(ccp2); return ret; } /* ----------------------------------------------------------------------------- * ISP ccp2 initialisation and cleanup */ /* * ccp2_init_entities - Initialize ccp2 subdev and media entity. * @ccp2: Pointer to ISP CCP2 device * return negative error code or zero on success */ static int ccp2_init_entities(struct isp_ccp2_device *ccp2) { struct v4l2_subdev *sd = &ccp2->subdev; struct media_pad *pads = ccp2->pads; struct media_entity *me = &sd->entity; int ret; ccp2->input = CCP2_INPUT_NONE; ccp2->output = CCP2_OUTPUT_NONE; v4l2_subdev_init(sd, &ccp2_sd_ops); sd->internal_ops = &ccp2_sd_internal_ops; strlcpy(sd->name, "OMAP3 ISP CCP2", sizeof(sd->name)); sd->grp_id = 1 << 16; /* group ID for isp subdevs */ v4l2_set_subdevdata(sd, ccp2); sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; pads[CCP2_PAD_SINK].flags = MEDIA_PAD_FL_SINK; pads[CCP2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; me->ops = &ccp2_media_ops; ret = media_entity_init(me, CCP2_PADS_NUM, pads, 0); if (ret < 0) return ret; ccp2_init_formats(sd, NULL); /* * The CCP2 has weird line alignment requirements, possibly caused by * DPCM8 decompression. Line length for data read from memory must be a * multiple of 128 bits (16 bytes) in continuous mode (when no padding * is present at end of lines). Additionally, if padding is used, the * padded line length must be a multiple of 32 bytes. To simplify the * implementation we use a fixed 32 bytes alignment regardless of the * input format and width. If strict 128 bits alignment support is * required ispvideo will need to be made aware of this special dual * alignement requirements. */ ccp2->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; ccp2->video_in.bpl_alignment = 32; ccp2->video_in.bpl_max = 0xffffffe0; ccp2->video_in.isp = to_isp_device(ccp2); ccp2->video_in.ops = &ccp2_video_ops; ccp2->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 3; ret = omap3isp_video_init(&ccp2->video_in, "CCP2"); if (ret < 0) goto error_video; /* Connect the video node to the ccp2 subdev. */ ret = media_entity_create_link(&ccp2->video_in.video.entity, 0, &ccp2->subdev.entity, CCP2_PAD_SINK, 0); if (ret < 0) goto error_link; return 0; error_link: omap3isp_video_cleanup(&ccp2->video_in); error_video: media_entity_cleanup(&ccp2->subdev.entity); return ret; } /* * omap3isp_ccp2_init - CCP2 initialization. * @isp : Pointer to ISP device * return negative error code or zero on success */ int omap3isp_ccp2_init(struct isp_device *isp) { struct isp_ccp2_device *ccp2 = &isp->isp_ccp2; int ret; init_waitqueue_head(&ccp2->wait); /* * On the OMAP34xx the CSI1 receiver is operated in the CSIb IO * complex, which is powered by vdds_csib power rail. Hence the * request for the regulator. * * On the OMAP36xx, the CCP2 uses the CSI PHY1 or PHY2, shared with * the CSI2c or CSI2a receivers. The PHY then needs to be explicitly * configured. * * TODO: Don't hardcode the usage of PHY1 (shared with CSI2c). */ if (isp->revision == ISP_REVISION_2_0) { ccp2->vdds_csib = regulator_get(isp->dev, "vdds_csib"); if (IS_ERR(ccp2->vdds_csib)) { dev_dbg(isp->dev, "Could not get regulator vdds_csib\n"); ccp2->vdds_csib = NULL; } } else if (isp->revision == ISP_REVISION_15_0) { ccp2->phy = &isp->isp_csiphy1; } ret = ccp2_init_entities(ccp2); if (ret < 0) { regulator_put(ccp2->vdds_csib); return ret; } ccp2_reset(ccp2); return 0; } /* * omap3isp_ccp2_cleanup - CCP2 un-initialization * @isp : Pointer to ISP device */ void omap3isp_ccp2_cleanup(struct isp_device *isp) { struct isp_ccp2_device *ccp2 = &isp->isp_ccp2; omap3isp_video_cleanup(&ccp2->video_in); media_entity_cleanup(&ccp2->subdev.entity); regulator_put(ccp2->vdds_csib); }