blob: 6b26e036294e4c134ebfcd1b9729320bef04ac11 [file] [log] [blame]
// 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-gen1.h"
#include "camss.h"
#define CAMSS_CSID_HW_VERSION 0x0
#define CAMSS_CSID_CORE_CTRL_0 0x004
#define CAMSS_CSID_CORE_CTRL_1 0x008
#define CAMSS_CSID_RST_CMD 0x010
#define CAMSS_CSID_CID_LUT_VC_n(n) (0x014 + 0x4 * (n))
#define CAMSS_CSID_CID_n_CFG(n) (0x024 + 0x4 * (n))
#define CAMSS_CSID_CID_n_CFG_ISPIF_EN BIT(0)
#define CAMSS_CSID_CID_n_CFG_RDI_EN BIT(1)
#define CAMSS_CSID_CID_n_CFG_DECODE_FORMAT_SHIFT 4
#define CAMSS_CSID_CID_n_CFG_PLAIN_FORMAT_8 (PLAIN_FORMAT_PLAIN8 << 8)
#define CAMSS_CSID_CID_n_CFG_PLAIN_FORMAT_16 (PLAIN_FORMAT_PLAIN16 << 8)
#define CAMSS_CSID_CID_n_CFG_PLAIN_ALIGNMENT_LSB (0 << 9)
#define CAMSS_CSID_CID_n_CFG_PLAIN_ALIGNMENT_MSB (1 << 9)
#define CAMSS_CSID_CID_n_CFG_RDI_MODE_RAW_DUMP (0 << 10)
#define CAMSS_CSID_CID_n_CFG_RDI_MODE_PLAIN_PACKING (1 << 10)
#define CAMSS_CSID_IRQ_CLEAR_CMD 0x064
#define CAMSS_CSID_IRQ_MASK 0x068
#define CAMSS_CSID_IRQ_STATUS 0x06c
#define CAMSS_CSID_TG_CTRL 0x0a8
#define CAMSS_CSID_TG_CTRL_DISABLE 0xa06436
#define CAMSS_CSID_TG_CTRL_ENABLE 0xa06437
#define CAMSS_CSID_TG_VC_CFG 0x0ac
#define CAMSS_CSID_TG_VC_CFG_H_BLANKING 0x3ff
#define CAMSS_CSID_TG_VC_CFG_V_BLANKING 0x7f
#define CAMSS_CSID_TG_DT_n_CGG_0(n) (0x0b4 + 0xc * (n))
#define CAMSS_CSID_TG_DT_n_CGG_1(n) (0x0b8 + 0xc * (n))
#define CAMSS_CSID_TG_DT_n_CGG_2(n) (0x0bc + 0xc * (n))
static const struct csid_format csid_formats[] = {
{
MEDIA_BUS_FMT_UYVY8_1X16,
DATA_TYPE_YUV422_8BIT,
DECODE_FORMAT_UNCOMPRESSED_8_BIT,
8,
2,
},
{
MEDIA_BUS_FMT_VYUY8_1X16,
DATA_TYPE_YUV422_8BIT,
DECODE_FORMAT_UNCOMPRESSED_8_BIT,
8,
2,
},
{
MEDIA_BUS_FMT_YUYV8_1X16,
DATA_TYPE_YUV422_8BIT,
DECODE_FORMAT_UNCOMPRESSED_8_BIT,
8,
2,
},
{
MEDIA_BUS_FMT_YVYU8_1X16,
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_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,
},
{
MEDIA_BUS_FMT_Y10_1X10,
DATA_TYPE_RAW_10BIT,
DECODE_FORMAT_UNCOMPRESSED_10_BIT,
10,
1,
},
};
static void csid_configure_stream(struct csid_device *csid, u8 enable)
{
struct csid_testgen_config *tg = &csid->testgen;
u32 sink_code = csid->fmt[MSM_CSID_PAD_SINK].code;
u32 src_code = csid->fmt[MSM_CSID_PAD_SRC].code;
u32 val;
if (enable) {
struct v4l2_mbus_framefmt *input_format;
const struct csid_format *format;
u8 vc = 0; /* Virtual Channel 0 */
u8 cid = vc * 4; /* id of Virtual Channel and Data Type set */
u8 dt_shift;
if (tg->enabled) {
/* Config Test Generator */
u32 num_bytes_per_line, num_lines;
input_format = &csid->fmt[MSM_CSID_PAD_SRC];
format = csid_get_fmt_entry(csid->formats, csid->nformats,
input_format->code);
num_bytes_per_line = input_format->width * format->bpp * format->spp / 8;
num_lines = input_format->height;
/* 31:24 V blank, 23:13 H blank, 3:2 num of active DT */
/* 1:0 VC */
val = ((CAMSS_CSID_TG_VC_CFG_V_BLANKING & 0xff) << 24) |
((CAMSS_CSID_TG_VC_CFG_H_BLANKING & 0x7ff) << 13);
writel_relaxed(val, csid->base + CAMSS_CSID_TG_VC_CFG);
/* 28:16 bytes per lines, 12:0 num of lines */
val = ((num_bytes_per_line & 0x1fff) << 16) |
(num_lines & 0x1fff);
writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_0(0));
/* 5:0 data type */
val = format->data_type;
writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_1(0));
/* 2:0 output test pattern */
val = tg->mode - 1;
writel_relaxed(val, csid->base + CAMSS_CSID_TG_DT_n_CGG_2(0));
} else {
struct csid_phy_config *phy = &csid->phy;
input_format = &csid->fmt[MSM_CSID_PAD_SINK];
format = csid_get_fmt_entry(csid->formats, csid->nformats,
input_format->code);
val = phy->lane_cnt - 1;
val |= phy->lane_assign << 4;
writel_relaxed(val, csid->base + CAMSS_CSID_CORE_CTRL_0);
val = phy->csiphy_id << 17;
val |= 0x9;
writel_relaxed(val, csid->base + CAMSS_CSID_CORE_CTRL_1);
}
/* Config LUT */
dt_shift = (cid % 4) * 8;
val = readl_relaxed(csid->base + CAMSS_CSID_CID_LUT_VC_n(vc));
val &= ~(0xff << dt_shift);
val |= format->data_type << dt_shift;
writel_relaxed(val, csid->base + CAMSS_CSID_CID_LUT_VC_n(vc));
val = CAMSS_CSID_CID_n_CFG_ISPIF_EN;
val |= CAMSS_CSID_CID_n_CFG_RDI_EN;
val |= format->decode_format << CAMSS_CSID_CID_n_CFG_DECODE_FORMAT_SHIFT;
val |= CAMSS_CSID_CID_n_CFG_RDI_MODE_RAW_DUMP;
if ((sink_code == MEDIA_BUS_FMT_SBGGR10_1X10 &&
src_code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) ||
(sink_code == MEDIA_BUS_FMT_Y10_1X10 &&
src_code == MEDIA_BUS_FMT_Y10_2X8_PADHI_LE)) {
val |= CAMSS_CSID_CID_n_CFG_RDI_MODE_PLAIN_PACKING;
val |= CAMSS_CSID_CID_n_CFG_PLAIN_FORMAT_16;
val |= CAMSS_CSID_CID_n_CFG_PLAIN_ALIGNMENT_LSB;
}
writel_relaxed(val, csid->base + CAMSS_CSID_CID_n_CFG(cid));
if (tg->enabled) {
val = CAMSS_CSID_TG_CTRL_ENABLE;
writel_relaxed(val, csid->base + CAMSS_CSID_TG_CTRL);
}
} else {
if (tg->enabled) {
val = CAMSS_CSID_TG_CTRL_DISABLE;
writel_relaxed(val, csid->base + CAMSS_CSID_TG_CTRL);
}
}
}
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;
}
static u32 csid_hw_version(struct csid_device *csid)
{
u32 hw_version = readl_relaxed(csid->base + CAMSS_CSID_HW_VERSION);
dev_dbg(csid->camss->dev, "CSID HW Version = 0x%08x\n", hw_version);
return hw_version;
}
/*
* 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 value;
value = readl_relaxed(csid->base + CAMSS_CSID_IRQ_STATUS);
writel_relaxed(value, csid->base + CAMSS_CSID_IRQ_CLEAR_CMD);
if ((value >> 11) & 0x1)
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;
reinit_completion(&csid->reset_complete);
writel_relaxed(0x7fff, csid->base + CAMSS_CSID_RST_CMD);
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_GEN1;
}
const struct csid_hw_ops csid_ops_4_7 = {
.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,
};