| // SPDX-License-Identifier: GPL-2.0 |
| /* |
| * camss-csid-4-7.c |
| * |
| * Qualcomm MSM Camera Subsystem - CSID (CSI Decoder) Module |
| * |
| * Copyright (C) 2020 Linaro Ltd. |
| */ |
| #include <linux/completion.h> |
| #include <linux/interrupt.h> |
| #include <linux/io.h> |
| #include <linux/kernel.h> |
| #include <linux/of.h> |
| |
| #include "camss-csid.h" |
| #include "camss-csid-gen2.h" |
| #include "camss.h" |
| |
| /* The CSID 2 IP-block is different from the others, |
| * and is of a bare-bones Lite version, with no PIX |
| * interface support. As a result of that it has an |
| * alternate register layout. |
| */ |
| #define IS_LITE (csid->id >= 2 ? 1 : 0) |
| |
| #define CSID_HW_VERSION 0x0 |
| #define HW_VERSION_STEPPING 0 |
| #define HW_VERSION_REVISION 16 |
| #define HW_VERSION_GENERATION 28 |
| |
| #define CSID_RST_STROBES 0x10 |
| #define RST_STROBES 0 |
| |
| #define CSID_CSI2_RX_IRQ_STATUS 0x20 |
| #define CSID_CSI2_RX_IRQ_MASK 0x24 |
| #define CSID_CSI2_RX_IRQ_CLEAR 0x28 |
| |
| #define CSID_CSI2_RDIN_IRQ_STATUS(rdi) ((IS_LITE ? 0x30 : 0x40) \ |
| + 0x10 * (rdi)) |
| #define CSID_CSI2_RDIN_IRQ_MASK(rdi) ((IS_LITE ? 0x34 : 0x44) \ |
| + 0x10 * (rdi)) |
| #define CSID_CSI2_RDIN_IRQ_CLEAR(rdi) ((IS_LITE ? 0x38 : 0x48) \ |
| + 0x10 * (rdi)) |
| #define CSID_CSI2_RDIN_IRQ_SET(rdi) ((IS_LITE ? 0x3C : 0x4C) \ |
| + 0x10 * (rdi)) |
| |
| #define CSID_TOP_IRQ_STATUS 0x70 |
| #define TOP_IRQ_STATUS_RESET_DONE 0 |
| #define CSID_TOP_IRQ_MASK 0x74 |
| #define CSID_TOP_IRQ_CLEAR 0x78 |
| #define CSID_TOP_IRQ_SET 0x7C |
| #define CSID_IRQ_CMD 0x80 |
| #define IRQ_CMD_CLEAR 0 |
| #define IRQ_CMD_SET 4 |
| |
| #define CSID_CSI2_RX_CFG0 0x100 |
| #define CSI2_RX_CFG0_NUM_ACTIVE_LANES 0 |
| #define CSI2_RX_CFG0_DL0_INPUT_SEL 4 |
| #define CSI2_RX_CFG0_DL1_INPUT_SEL 8 |
| #define CSI2_RX_CFG0_DL2_INPUT_SEL 12 |
| #define CSI2_RX_CFG0_DL3_INPUT_SEL 16 |
| #define CSI2_RX_CFG0_PHY_NUM_SEL 20 |
| #define CSI2_RX_CFG0_PHY_TYPE_SEL 24 |
| |
| #define CSID_CSI2_RX_CFG1 0x104 |
| #define CSI2_RX_CFG1_PACKET_ECC_CORRECTION_EN 0 |
| #define CSI2_RX_CFG1_DE_SCRAMBLE_EN 1 |
| #define CSI2_RX_CFG1_VC_MODE 2 |
| #define CSI2_RX_CFG1_COMPLETE_STREAM_EN 4 |
| #define CSI2_RX_CFG1_COMPLETE_STREAM_FRAME_TIMING 5 |
| #define CSI2_RX_CFG1_MISR_EN 6 |
| #define CSI2_RX_CFG1_CGC_MODE 7 |
| #define CGC_MODE_DYNAMIC_GATING 0 |
| #define CGC_MODE_ALWAYS_ON 1 |
| |
| #define CSID_RDI_CFG0(rdi) ((IS_LITE ? 0x200 : 0x300) \ |
| + 0x100 * (rdi)) |
| #define RDI_CFG0_BYTE_CNTR_EN 0 |
| #define RDI_CFG0_FORMAT_MEASURE_EN 1 |
| #define RDI_CFG0_TIMESTAMP_EN 2 |
| #define RDI_CFG0_DROP_H_EN 3 |
| #define RDI_CFG0_DROP_V_EN 4 |
| #define RDI_CFG0_CROP_H_EN 5 |
| #define RDI_CFG0_CROP_V_EN 6 |
| #define RDI_CFG0_MISR_EN 7 |
| #define RDI_CFG0_CGC_MODE 8 |
| #define CGC_MODE_DYNAMIC 0 |
| #define CGC_MODE_ALWAYS_ON 1 |
| #define RDI_CFG0_PLAIN_ALIGNMENT 9 |
| #define PLAIN_ALIGNMENT_LSB 0 |
| #define PLAIN_ALIGNMENT_MSB 1 |
| #define RDI_CFG0_PLAIN_FORMAT 10 |
| #define RDI_CFG0_DECODE_FORMAT 12 |
| #define RDI_CFG0_DATA_TYPE 16 |
| #define RDI_CFG0_VIRTUAL_CHANNEL 22 |
| #define RDI_CFG0_DT_ID 27 |
| #define RDI_CFG0_EARLY_EOF_EN 29 |
| #define RDI_CFG0_PACKING_FORMAT 30 |
| #define RDI_CFG0_ENABLE 31 |
| |
| #define CSID_RDI_CFG1(rdi) ((IS_LITE ? 0x204 : 0x304)\ |
| + 0x100 * (rdi)) |
| #define RDI_CFG1_TIMESTAMP_STB_SEL 0 |
| |
| #define CSID_RDI_CTRL(rdi) ((IS_LITE ? 0x208 : 0x308)\ |
| + 0x100 * (rdi)) |
| #define RDI_CTRL_HALT_CMD 0 |
| #define HALT_CMD_HALT_AT_FRAME_BOUNDARY 0 |
| #define HALT_CMD_RESUME_AT_FRAME_BOUNDARY 1 |
| #define RDI_CTRL_HALT_MODE 2 |
| |
| #define CSID_RDI_FRM_DROP_PATTERN(rdi) ((IS_LITE ? 0x20C : 0x30C)\ |
| + 0x100 * (rdi)) |
| #define CSID_RDI_FRM_DROP_PERIOD(rdi) ((IS_LITE ? 0x210 : 0x310)\ |
| + 0x100 * (rdi)) |
| #define CSID_RDI_IRQ_SUBSAMPLE_PATTERN(rdi) ((IS_LITE ? 0x214 : 0x314)\ |
| + 0x100 * (rdi)) |
| #define CSID_RDI_IRQ_SUBSAMPLE_PERIOD(rdi) ((IS_LITE ? 0x218 : 0x318)\ |
| + 0x100 * (rdi)) |
| #define CSID_RDI_RPP_PIX_DROP_PATTERN(rdi) ((IS_LITE ? 0x224 : 0x324)\ |
| + 0x100 * (rdi)) |
| #define CSID_RDI_RPP_PIX_DROP_PERIOD(rdi) ((IS_LITE ? 0x228 : 0x328)\ |
| + 0x100 * (rdi)) |
| #define CSID_RDI_RPP_LINE_DROP_PATTERN(rdi) ((IS_LITE ? 0x22C : 0x32C)\ |
| + 0x100 * (rdi)) |
| #define CSID_RDI_RPP_LINE_DROP_PERIOD(rdi) ((IS_LITE ? 0x230 : 0x330)\ |
| + 0x100 * (rdi)) |
| |
| #define CSID_TPG_CTRL 0x600 |
| #define TPG_CTRL_TEST_EN 0 |
| #define TPG_CTRL_FS_PKT_EN 1 |
| #define TPG_CTRL_FE_PKT_EN 2 |
| #define TPG_CTRL_NUM_ACTIVE_LANES 4 |
| #define TPG_CTRL_CYCLES_BETWEEN_PKTS 8 |
| #define TPG_CTRL_NUM_TRAIL_BYTES 20 |
| |
| #define CSID_TPG_VC_CFG0 0x604 |
| #define TPG_VC_CFG0_VC_NUM 0 |
| #define TPG_VC_CFG0_NUM_ACTIVE_SLOTS 8 |
| #define NUM_ACTIVE_SLOTS_0_ENABLED 0 |
| #define NUM_ACTIVE_SLOTS_0_1_ENABLED 1 |
| #define NUM_ACTIVE_SLOTS_0_1_2_ENABLED 2 |
| #define NUM_ACTIVE_SLOTS_0_1_3_ENABLED 3 |
| #define TPG_VC_CFG0_LINE_INTERLEAVING_MODE 10 |
| #define INTELEAVING_MODE_INTERLEAVED 0 |
| #define INTELEAVING_MODE_ONE_SHOT 1 |
| #define TPG_VC_CFG0_NUM_FRAMES 16 |
| |
| #define CSID_TPG_VC_CFG1 0x608 |
| #define TPG_VC_CFG1_H_BLANKING_COUNT 0 |
| #define TPG_VC_CFG1_V_BLANKING_COUNT 12 |
| #define TPG_VC_CFG1_V_BLANK_FRAME_WIDTH_SEL 24 |
| |
| #define CSID_TPG_LFSR_SEED 0x60C |
| |
| #define CSID_TPG_DT_n_CFG_0(n) (0x610 + (n) * 0xC) |
| #define TPG_DT_n_CFG_0_FRAME_HEIGHT 0 |
| #define TPG_DT_n_CFG_0_FRAME_WIDTH 16 |
| |
| #define CSID_TPG_DT_n_CFG_1(n) (0x614 + (n) * 0xC) |
| #define TPG_DT_n_CFG_1_DATA_TYPE 0 |
| #define TPG_DT_n_CFG_1_ECC_XOR_MASK 8 |
| #define TPG_DT_n_CFG_1_CRC_XOR_MASK 16 |
| |
| #define CSID_TPG_DT_n_CFG_2(n) (0x618 + (n) * 0xC) |
| #define TPG_DT_n_CFG_2_PAYLOAD_MODE 0 |
| #define TPG_DT_n_CFG_2_USER_SPECIFIED_PAYLOAD 4 |
| #define TPG_DT_n_CFG_2_ENCODE_FORMAT 16 |
| |
| #define CSID_TPG_COLOR_BARS_CFG 0x640 |
| #define TPG_COLOR_BARS_CFG_UNICOLOR_BAR_EN 0 |
| #define TPG_COLOR_BARS_CFG_UNICOLOR_BAR_SEL 4 |
| #define TPG_COLOR_BARS_CFG_SPLIT_EN 5 |
| #define TPG_COLOR_BARS_CFG_ROTATE_PERIOD 8 |
| |
| #define CSID_TPG_COLOR_BOX_CFG 0x644 |
| #define TPG_COLOR_BOX_CFG_MODE 0 |
| #define TPG_COLOR_BOX_PATTERN_SEL 2 |
| |
| static const struct csid_format csid_formats[] = { |
| { |
| MEDIA_BUS_FMT_UYVY8_2X8, |
| DATA_TYPE_YUV422_8BIT, |
| DECODE_FORMAT_UNCOMPRESSED_8_BIT, |
| 8, |
| 2, |
| }, |
| { |
| MEDIA_BUS_FMT_VYUY8_2X8, |
| DATA_TYPE_YUV422_8BIT, |
| DECODE_FORMAT_UNCOMPRESSED_8_BIT, |
| 8, |
| 2, |
| }, |
| { |
| MEDIA_BUS_FMT_YUYV8_2X8, |
| DATA_TYPE_YUV422_8BIT, |
| DECODE_FORMAT_UNCOMPRESSED_8_BIT, |
| 8, |
| 2, |
| }, |
| { |
| MEDIA_BUS_FMT_YVYU8_2X8, |
| DATA_TYPE_YUV422_8BIT, |
| DECODE_FORMAT_UNCOMPRESSED_8_BIT, |
| 8, |
| 2, |
| }, |
| { |
| MEDIA_BUS_FMT_SBGGR8_1X8, |
| DATA_TYPE_RAW_8BIT, |
| DECODE_FORMAT_UNCOMPRESSED_8_BIT, |
| 8, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SGBRG8_1X8, |
| DATA_TYPE_RAW_8BIT, |
| DECODE_FORMAT_UNCOMPRESSED_8_BIT, |
| 8, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SGRBG8_1X8, |
| DATA_TYPE_RAW_8BIT, |
| DECODE_FORMAT_UNCOMPRESSED_8_BIT, |
| 8, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SRGGB8_1X8, |
| DATA_TYPE_RAW_8BIT, |
| DECODE_FORMAT_UNCOMPRESSED_8_BIT, |
| 8, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SBGGR10_1X10, |
| DATA_TYPE_RAW_10BIT, |
| DECODE_FORMAT_UNCOMPRESSED_10_BIT, |
| 10, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SGBRG10_1X10, |
| DATA_TYPE_RAW_10BIT, |
| DECODE_FORMAT_UNCOMPRESSED_10_BIT, |
| 10, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SGRBG10_1X10, |
| DATA_TYPE_RAW_10BIT, |
| DECODE_FORMAT_UNCOMPRESSED_10_BIT, |
| 10, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SRGGB10_1X10, |
| DATA_TYPE_RAW_10BIT, |
| DECODE_FORMAT_UNCOMPRESSED_10_BIT, |
| 10, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_Y8_1X8, |
| DATA_TYPE_RAW_8BIT, |
| DECODE_FORMAT_UNCOMPRESSED_8_BIT, |
| 8, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_Y10_1X10, |
| DATA_TYPE_RAW_10BIT, |
| DECODE_FORMAT_UNCOMPRESSED_10_BIT, |
| 10, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SBGGR12_1X12, |
| DATA_TYPE_RAW_12BIT, |
| DECODE_FORMAT_UNCOMPRESSED_12_BIT, |
| 12, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SGBRG12_1X12, |
| DATA_TYPE_RAW_12BIT, |
| DECODE_FORMAT_UNCOMPRESSED_12_BIT, |
| 12, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SGRBG12_1X12, |
| DATA_TYPE_RAW_12BIT, |
| DECODE_FORMAT_UNCOMPRESSED_12_BIT, |
| 12, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SRGGB12_1X12, |
| DATA_TYPE_RAW_12BIT, |
| DECODE_FORMAT_UNCOMPRESSED_12_BIT, |
| 12, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SBGGR14_1X14, |
| DATA_TYPE_RAW_14BIT, |
| DECODE_FORMAT_UNCOMPRESSED_14_BIT, |
| 14, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SGBRG14_1X14, |
| DATA_TYPE_RAW_14BIT, |
| DECODE_FORMAT_UNCOMPRESSED_14_BIT, |
| 14, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SGRBG14_1X14, |
| DATA_TYPE_RAW_14BIT, |
| DECODE_FORMAT_UNCOMPRESSED_14_BIT, |
| 14, |
| 1, |
| }, |
| { |
| MEDIA_BUS_FMT_SRGGB14_1X14, |
| DATA_TYPE_RAW_14BIT, |
| DECODE_FORMAT_UNCOMPRESSED_14_BIT, |
| 14, |
| 1, |
| }, |
| }; |
| |
| static void csid_configure_stream(struct csid_device *csid, u8 enable) |
| { |
| struct csid_testgen_config *tg = &csid->testgen; |
| u32 val; |
| u32 phy_sel = 0; |
| u8 lane_cnt = csid->phy.lane_cnt; |
| struct v4l2_mbus_framefmt *input_format = &csid->fmt[MSM_CSID_PAD_SRC]; |
| const struct csid_format *format = csid_get_fmt_entry(csid->formats, csid->nformats, |
| input_format->code); |
| |
| if (!lane_cnt) |
| lane_cnt = 4; |
| |
| if (!tg->enabled) |
| phy_sel = csid->phy.csiphy_id; |
| |
| if (enable) { |
| u8 vc = 0; /* Virtual Channel 0 */ |
| u8 dt_id = vc * 4; |
| |
| if (tg->enabled) { |
| /* Config Test Generator */ |
| vc = 0xa; |
| |
| /* configure one DT, infinite frames */ |
| val = vc << TPG_VC_CFG0_VC_NUM; |
| val |= INTELEAVING_MODE_ONE_SHOT << TPG_VC_CFG0_LINE_INTERLEAVING_MODE; |
| val |= 0 << TPG_VC_CFG0_NUM_FRAMES; |
| writel_relaxed(val, csid->base + CSID_TPG_VC_CFG0); |
| |
| val = 0x740 << TPG_VC_CFG1_H_BLANKING_COUNT; |
| val |= 0x3ff << TPG_VC_CFG1_V_BLANKING_COUNT; |
| writel_relaxed(val, csid->base + CSID_TPG_VC_CFG1); |
| |
| writel_relaxed(0x12345678, csid->base + CSID_TPG_LFSR_SEED); |
| |
| val = input_format->height & 0x1fff << TPG_DT_n_CFG_0_FRAME_HEIGHT; |
| val |= input_format->width & 0x1fff << TPG_DT_n_CFG_0_FRAME_WIDTH; |
| writel_relaxed(val, csid->base + CSID_TPG_DT_n_CFG_0(0)); |
| |
| val = format->data_type << TPG_DT_n_CFG_1_DATA_TYPE; |
| writel_relaxed(val, csid->base + CSID_TPG_DT_n_CFG_1(0)); |
| |
| val = tg->mode << TPG_DT_n_CFG_2_PAYLOAD_MODE; |
| val |= 0xBE << TPG_DT_n_CFG_2_USER_SPECIFIED_PAYLOAD; |
| val |= format->decode_format << TPG_DT_n_CFG_2_ENCODE_FORMAT; |
| writel_relaxed(val, csid->base + CSID_TPG_DT_n_CFG_2(0)); |
| |
| writel_relaxed(0, csid->base + CSID_TPG_COLOR_BARS_CFG); |
| |
| writel_relaxed(0, csid->base + CSID_TPG_COLOR_BOX_CFG); |
| } |
| |
| val = 1 << RDI_CFG0_BYTE_CNTR_EN; |
| val |= 1 << RDI_CFG0_FORMAT_MEASURE_EN; |
| val |= 1 << RDI_CFG0_TIMESTAMP_EN; |
| /* note: for non-RDI path, this should be format->decode_format */ |
| val |= DECODE_FORMAT_PAYLOAD_ONLY << RDI_CFG0_DECODE_FORMAT; |
| val |= format->data_type << RDI_CFG0_DATA_TYPE; |
| val |= vc << RDI_CFG0_VIRTUAL_CHANNEL; |
| val |= dt_id << RDI_CFG0_DT_ID; |
| writel_relaxed(val, csid->base + CSID_RDI_CFG0(0)); |
| |
| /* CSID_TIMESTAMP_STB_POST_IRQ */ |
| val = 2 << RDI_CFG1_TIMESTAMP_STB_SEL; |
| writel_relaxed(val, csid->base + CSID_RDI_CFG1(0)); |
| |
| val = 1; |
| writel_relaxed(val, csid->base + CSID_RDI_FRM_DROP_PERIOD(0)); |
| |
| val = 0; |
| writel_relaxed(val, csid->base + CSID_RDI_FRM_DROP_PATTERN(0)); |
| |
| val = 1; |
| writel_relaxed(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PERIOD(0)); |
| |
| val = 0; |
| writel_relaxed(val, csid->base + CSID_RDI_IRQ_SUBSAMPLE_PATTERN(0)); |
| |
| val = 1; |
| writel_relaxed(val, csid->base + CSID_RDI_RPP_PIX_DROP_PERIOD(0)); |
| |
| val = 0; |
| writel_relaxed(val, csid->base + CSID_RDI_RPP_PIX_DROP_PATTERN(0)); |
| |
| val = 1; |
| writel_relaxed(val, csid->base + CSID_RDI_RPP_LINE_DROP_PERIOD(0)); |
| |
| val = 0; |
| writel_relaxed(val, csid->base + CSID_RDI_RPP_LINE_DROP_PATTERN(0)); |
| |
| val = 0; |
| writel_relaxed(val, csid->base + CSID_RDI_CTRL(0)); |
| |
| val = readl_relaxed(csid->base + CSID_RDI_CFG0(0)); |
| val |= 1 << RDI_CFG0_ENABLE; |
| writel_relaxed(val, csid->base + CSID_RDI_CFG0(0)); |
| } |
| |
| if (tg->enabled) { |
| val = enable << TPG_CTRL_TEST_EN; |
| val |= 1 << TPG_CTRL_FS_PKT_EN; |
| val |= 1 << TPG_CTRL_FE_PKT_EN; |
| val |= (lane_cnt - 1) << TPG_CTRL_NUM_ACTIVE_LANES; |
| val |= 0x64 << TPG_CTRL_CYCLES_BETWEEN_PKTS; |
| val |= 0xA << TPG_CTRL_NUM_TRAIL_BYTES; |
| writel_relaxed(val, csid->base + CSID_TPG_CTRL); |
| } |
| |
| val = (lane_cnt - 1) << CSI2_RX_CFG0_NUM_ACTIVE_LANES; |
| val |= csid->phy.lane_assign << CSI2_RX_CFG0_DL0_INPUT_SEL; |
| val |= phy_sel << CSI2_RX_CFG0_PHY_NUM_SEL; |
| writel_relaxed(val, csid->base + CSID_CSI2_RX_CFG0); |
| |
| val = 1 << CSI2_RX_CFG1_PACKET_ECC_CORRECTION_EN; |
| val |= 1 << CSI2_RX_CFG1_MISR_EN; |
| writel_relaxed(val, csid->base + CSID_CSI2_RX_CFG1); |
| |
| if (enable) |
| val = HALT_CMD_RESUME_AT_FRAME_BOUNDARY << RDI_CTRL_HALT_CMD; |
| else |
| val = HALT_CMD_HALT_AT_FRAME_BOUNDARY << RDI_CTRL_HALT_CMD; |
| writel_relaxed(val, csid->base + CSID_RDI_CTRL(0)); |
| } |
| |
| static int csid_configure_testgen_pattern(struct csid_device *csid, s32 val) |
| { |
| if (val > 0 && val <= csid->testgen.nmodes) |
| csid->testgen.mode = val; |
| |
| return 0; |
| } |
| |
| /* |
| * csid_hw_version - CSID hardware version query |
| * @csid: CSID device |
| * |
| * Return HW version or error |
| */ |
| static u32 csid_hw_version(struct csid_device *csid) |
| { |
| u32 hw_version; |
| u32 hw_gen; |
| u32 hw_rev; |
| u32 hw_step; |
| |
| hw_version = readl_relaxed(csid->base + CSID_HW_VERSION); |
| hw_gen = (hw_version >> HW_VERSION_GENERATION) & 0xF; |
| hw_rev = (hw_version >> HW_VERSION_REVISION) & 0xFFF; |
| hw_step = (hw_version >> HW_VERSION_STEPPING) & 0xFFFF; |
| dev_dbg(csid->camss->dev, "CSID HW Version = %u.%u.%u\n", |
| hw_gen, hw_rev, hw_step); |
| |
| return hw_version; |
| } |
| |
| /* |
| * csid_isr - CSID module interrupt service routine |
| * @irq: Interrupt line |
| * @dev: CSID device |
| * |
| * Return IRQ_HANDLED on success |
| */ |
| static irqreturn_t csid_isr(int irq, void *dev) |
| { |
| struct csid_device *csid = dev; |
| u32 val; |
| u8 reset_done; |
| |
| val = readl_relaxed(csid->base + CSID_TOP_IRQ_STATUS); |
| writel_relaxed(val, csid->base + CSID_TOP_IRQ_CLEAR); |
| reset_done = val & BIT(TOP_IRQ_STATUS_RESET_DONE); |
| |
| val = readl_relaxed(csid->base + CSID_CSI2_RX_IRQ_STATUS); |
| writel_relaxed(val, csid->base + CSID_CSI2_RX_IRQ_CLEAR); |
| |
| val = readl_relaxed(csid->base + CSID_CSI2_RDIN_IRQ_STATUS(0)); |
| writel_relaxed(val, csid->base + CSID_CSI2_RDIN_IRQ_CLEAR(0)); |
| |
| val = 1 << IRQ_CMD_CLEAR; |
| writel_relaxed(val, csid->base + CSID_IRQ_CMD); |
| |
| if (reset_done) |
| complete(&csid->reset_complete); |
| |
| return IRQ_HANDLED; |
| } |
| |
| /* |
| * csid_reset - Trigger reset on CSID module and wait to complete |
| * @csid: CSID device |
| * |
| * Return 0 on success or a negative error code otherwise |
| */ |
| static int csid_reset(struct csid_device *csid) |
| { |
| unsigned long time; |
| u32 val; |
| |
| reinit_completion(&csid->reset_complete); |
| |
| writel_relaxed(1, csid->base + CSID_TOP_IRQ_CLEAR); |
| writel_relaxed(1, csid->base + CSID_IRQ_CMD); |
| writel_relaxed(1, csid->base + CSID_TOP_IRQ_MASK); |
| writel_relaxed(1, csid->base + CSID_IRQ_CMD); |
| |
| /* preserve registers */ |
| val = 0x1e << RST_STROBES; |
| writel_relaxed(val, csid->base + CSID_RST_STROBES); |
| |
| time = wait_for_completion_timeout(&csid->reset_complete, |
| msecs_to_jiffies(CSID_RESET_TIMEOUT_MS)); |
| if (!time) { |
| dev_err(csid->camss->dev, "CSID reset timeout\n"); |
| return -EIO; |
| } |
| |
| return 0; |
| } |
| |
| static u32 csid_src_pad_code(struct csid_device *csid, u32 sink_code, |
| unsigned int match_format_idx, u32 match_code) |
| { |
| switch (sink_code) { |
| case MEDIA_BUS_FMT_SBGGR10_1X10: |
| { |
| u32 src_code[] = { |
| MEDIA_BUS_FMT_SBGGR10_1X10, |
| MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, |
| }; |
| |
| return csid_find_code(src_code, ARRAY_SIZE(src_code), |
| match_format_idx, match_code); |
| } |
| case MEDIA_BUS_FMT_Y10_1X10: |
| { |
| u32 src_code[] = { |
| MEDIA_BUS_FMT_Y10_1X10, |
| MEDIA_BUS_FMT_Y10_2X8_PADHI_LE, |
| }; |
| |
| return csid_find_code(src_code, ARRAY_SIZE(src_code), |
| match_format_idx, match_code); |
| } |
| default: |
| if (match_format_idx > 0) |
| return 0; |
| |
| return sink_code; |
| } |
| } |
| |
| static void csid_subdev_init(struct csid_device *csid) |
| { |
| csid->formats = csid_formats; |
| csid->nformats = ARRAY_SIZE(csid_formats); |
| csid->testgen.modes = csid_testgen_modes; |
| csid->testgen.nmodes = CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN2; |
| } |
| |
| const struct csid_hw_ops csid_ops_gen2 = { |
| .configure_stream = csid_configure_stream, |
| .configure_testgen_pattern = csid_configure_testgen_pattern, |
| .hw_version = csid_hw_version, |
| .isr = csid_isr, |
| .reset = csid_reset, |
| .src_pad_code = csid_src_pad_code, |
| .subdev_init = csid_subdev_init, |
| }; |
