--- /dev/null
+// 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 ALT_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_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 = DATA_TYPE_RAW_10BIT << 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;
+ val |= DECODE_FORMAT_PAYLOAD_ONLY << RDI_CFG0_DECODE_FORMAT;
+ val |= DATA_TYPE_RAW_10BIT << 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(0, 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); // csi2_vc_mode_shift_val ?
+
+ /* error irqs start at BIT(11) */
+ writel_relaxed(~0u, csid->base + CSID_CSI2_RX_IRQ_MASK);
+
+ /* RDI irq */
+ writel_relaxed(~0u, csid->base + CSID_TOP_IRQ_MASK);
+
+ val = 1 << 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_170 = {
+ .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,
+};
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