Addition of support for the Galaxy Core GC2145 XVGA sensor. The sensor supports both DVP and CSI-2 interfaces however for the time being only CSI-2 is implemented. Configurations are currently based on initialization scripts coming from Galaxy Core and so for that purpose only 3 static resolutions are supported: - 640x480 - 1280x720 - 1600x1200 Signed-off-by: Alain Volmat <alain.volmat@xxxxxxxxxxx> --- MAINTAINERS | 8 + drivers/media/i2c/Kconfig | 10 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/gc2145.c | 1446 ++++++++++++++++++++++++++++++++++++ 4 files changed, 1465 insertions(+) create mode 100644 drivers/media/i2c/gc2145.c diff --git a/MAINTAINERS b/MAINTAINERS index c5029341b1d6..43702f86f64c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8760,6 +8760,14 @@ F: kernel/futex/* F: tools/perf/bench/futex* F: tools/testing/selftests/futex/ +GALAXYCORE GC2145 SENSOR DRIVER +M: Alain Volmat <alain.volmat@xxxxxxxxxxx> +L: linux-media@xxxxxxxxxxxxxxx +S: Maintained +T: git git://linuxtv.org/media_tree.git +F: Documentation/devicetree/bindings/media/i2c/galaxycore,gc2145.yaml +F: drivers/media/i2c/gc2145.c + GATEWORKS SYSTEM CONTROLLER (GSC) DRIVER M: Tim Harvey <tharvey@xxxxxxxxxxxxx> S: Maintained diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 59ee0ca2c978..fc053c834782 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -50,6 +50,16 @@ config VIDEO_AR0521 To compile this driver as a module, choose M here: the module will be called ar0521. +config VIDEO_GC2145 + select V4L2_CCI_I2C + tristate "GalaxyCore GC2145 sensor support" + help + This is a V4L2 sensor-level driver for GalaxyCore GC2145 + 2 Mpixel camera. + + To compile this driver as a module, choose M here: the + module will be called gc2145. + config VIDEO_HI556 tristate "Hynix Hi-556 sensor support" help diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index f5010f80a21f..08e7e638dedc 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -36,6 +36,7 @@ obj-$(CONFIG_VIDEO_DW9719) += dw9719.o obj-$(CONFIG_VIDEO_DW9768) += dw9768.o obj-$(CONFIG_VIDEO_DW9807_VCM) += dw9807-vcm.o obj-$(CONFIG_VIDEO_ET8EK8) += et8ek8/ +obj-$(CONFIG_VIDEO_GC2145) += gc2145.o obj-$(CONFIG_VIDEO_HI556) += hi556.o obj-$(CONFIG_VIDEO_HI846) += hi846.o obj-$(CONFIG_VIDEO_HI847) += hi847.o diff --git a/drivers/media/i2c/gc2145.c b/drivers/media/i2c/gc2145.c new file mode 100644 index 000000000000..12d3780b5548 --- /dev/null +++ b/drivers/media/i2c/gc2145.c @@ -0,0 +1,1446 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * A V4L2 driver for Galaxycore GC2145 camera. + * Copyright (C) 2023, STMicroelectronics SA + * + * Inspired by the imx219.c driver + * + * Datasheet v1.0 available at http://files.pine64.org/doc/datasheet/PinebookPro/GC2145%20CSP%20DataSheet%20release%20V1.0_20131201.pdf + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/pm_runtime.h> +#include <linux/regulator/consumer.h> +#include <linux/units.h> + +#include <media/mipi-csi2.h> +#include <media/v4l2-cci.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-event.h> +#include <media/v4l2-fwnode.h> +#include <media/v4l2-mediabus.h> + +/* Chip ID */ +#define GC2145_CHIP_ID 0x2145 + +/* Page 0 */ +#define GC2145_REG_EXPOSURE CCI_REG16(0x03) +#define GC2145_REG_HBLANK CCI_REG16(0x05) +#define GC2145_REG_VBLANK CCI_REG16(0x07) +#define GC2145_REG_ROW_START CCI_REG16(0x09) +#define GC2145_REG_COL_START CCI_REG16(0x0b) +#define GC2145_REG_WIN_HEIGHT CCI_REG16(0x0d) +#define GC2145_REG_WIN_WIDTH CCI_REG16(0x0f) +#define GC2145_REG_ANALOG_MODE1 CCI_REG8(0x17) +#define GC2145_REG_OUTPUT_FMT CCI_REG8(0x84) +#define GC2145_REG_SYNC_MODE CCI_REG8(0x86) +#define GC2145_SYNC_MODE_COL_SWITCH BIT(4) +#define GC2145_SYNC_MODE_ROW_SWITCH BIT(5) +#define GC2145_REG_BYPASS_MODE CCI_REG8(0x89) +#define GC2145_BYPASS_MODE_SWITCH BIT(5) +#define GC2145_REG_DEBUG_MODE2 CCI_REG8(0x8c) +#define GC2145_REG_DEBUG_MODE3 CCI_REG8(0x8d) +#define GC2145_REG_CROP_ENABLE CCI_REG8(0x90) +#define GC2145_REG_CROP_Y CCI_REG16(0x91) +#define GC2145_REG_CROP_X CCI_REG16(0x93) +#define GC2145_REG_CROP_HEIGHT CCI_REG16(0x95) +#define GC2145_REG_CROP_WIDTH CCI_REG16(0x97) +#define GC2145_REG_GLOBAL_GAIN CCI_REG8(0xb0) +#define GC2145_REG_CHIP_ID CCI_REG16(0xf0) +#define GC2145_REG_PAD_IO CCI_REG8(0xf2) +#define GC2145_REG_PAGE_SELECT CCI_REG8(0xfe) +/* Page 3 */ +#define GC2145_REG_DPHY_ANALOG_MODE1 CCI_REG8(0x01) +#define GC2145_DPHY_MODE_PHY_CLK_EN BIT(0) +#define GC2145_DPHY_MODE_PHY_LANE0_EN BIT(1) +#define GC2145_DPHY_MODE_PHY_LANE1_EN BIT(2) +#define GC2145_DPHY_MODE_PHY_CLK_LANE_P2S_SEL BIT(7) +#define GC2145_REG_DPHY_ANALOG_MODE2 CCI_REG8(0x02) +#define GC2145_DPHY_CLK_DIFF(a) ((a) & 0x07) +#define GC2145_DPHY_LANE0_DIFF(a) (((a) & 0x07) << 4) +#define GC2145_REG_DPHY_ANALOG_MODE3 CCI_REG8(0x03) +#define GC2145_DPHY_LANE1_DIFF(a) ((a) & 0x07) +#define GC2145_DPHY_CLK_DELAY BIT(4) +#define GC2145_DPHY_LANE0_DELAY BIT(5) +#define GC2145_DPHY_LANE1_DELAY BIT(6) +#define GC2145_REG_FIFO_FULL_LVL_LOW CCI_REG8(0x04) +#define GC2145_REG_FIFO_FULL_LVL_HIGH CCI_REG8(0x05) +#define GC2145_REG_FIFO_MODE CCI_REG8(0x06) +#define GC2145_FIFO_MODE_READ_GATE BIT(3) +#define GC2145_FIFO_MODE_MIPI_CLK_MODULE BIT(7) +#define GC2145_REG_BUF_CSI2_MODE CCI_REG8(0x10) +#define GC2145_CSI2_MODE_DOUBLE BIT(0) +#define GC2145_CSI2_MODE_RAW8 BIT(2) +#define GC2145_CSI2_MODE_MIPI_EN BIT(4) +#define GC2145_CSI2_MODE_EN BIT(7) +#define GC2145_REG_MIPI_DT CCI_REG8(0x11) +#define GC2145_REG_LWC_LOW CCI_REG8(0x12) +#define GC2145_REG_LWC_HIGH CCI_REG8(0x13) +#define GC2145_REG_DPHY_MODE CCI_REG8(0x15) +#define GC2145_DPHY_MODE_TRIGGER_PROG BIT(4) +#define GC2145_REG_FIFO_GATE_MODE CCI_REG8(0x17) +#define GC2145_REG_T_LPX CCI_REG8(0x21) +#define GC2145_REG_T_CLK_HS_PREPARE CCI_REG8(0x22) +#define GC2145_REG_T_CLK_ZERO CCI_REG8(0x23) +#define GC2145_REG_T_CLK_PRE CCI_REG8(0x24) +#define GC2145_REG_T_CLK_POST CCI_REG8(0x25) +#define GC2145_REG_T_CLK_TRAIL CCI_REG8(0x26) +#define GC2145_REG_T_HS_EXIT CCI_REG8(0x27) +#define GC2145_REG_T_WAKEUP CCI_REG8(0x28) +#define GC2145_REG_T_HS_PREPARE CCI_REG8(0x29) +#define GC2145_REG_T_HS_ZERO CCI_REG8(0x2a) +#define GC2145_REG_T_HS_TRAIL CCI_REG8(0x2b) + +/* External clock frequency is 24.0MHz */ +#define GC2145_XCLK_FREQ (24 * HZ_PER_MHZ) + +#define GC2145_NATIVE_WIDTH 1616U +#define GC2145_NATIVE_HEIGHT 1232U + +/** + * struct gc2145_mode - GC2145 mode description + * @width: frame width (in pixels) + * @height: frame height (in pixels) + * @reg_seq: registers config sequence to enter into the mode + * @reg_seq_size: size of the sequence + * @pixel_rate: pixel rate associated with the mode + * @crop: window area captured + * @hblank: default horizontal blanking + * @vblank: default vertical blanking + * @link_freq_index: index within the link frequency menu + */ +struct gc2145_mode { + unsigned int width; + unsigned int height; + const struct cci_reg_sequence *reg_seq; + size_t reg_seq_size; + unsigned long pixel_rate; + struct v4l2_rect crop; + unsigned int hblank; + unsigned int vblank; + unsigned int link_freq_index; +}; + +#define GC2145_DEFAULT_EXPOSURE 0x04e2 +#define GC2145_DEFAULT_GLOBAL_GAIN 0x55 +static const struct cci_reg_sequence gc2145_common_regs[] = { + {GC2145_REG_PAGE_SELECT, 0x00}, + /* SH Delay */ + {CCI_REG8(0x12), 0x2e}, + /* Flip */ + {GC2145_REG_ANALOG_MODE1, 0x14}, + /* Analog Conf */ + {CCI_REG8(0x18), 0x22}, {CCI_REG8(0x19), 0x0e}, {CCI_REG8(0x1a), 0x01}, + {CCI_REG8(0x1b), 0x4b}, {CCI_REG8(0x1c), 0x07}, {CCI_REG8(0x1d), 0x10}, + {CCI_REG8(0x1e), 0x88}, {CCI_REG8(0x1f), 0x78}, {CCI_REG8(0x20), 0x03}, + {CCI_REG8(0x21), 0x40}, {CCI_REG8(0x22), 0xa0}, {CCI_REG8(0x24), 0x16}, + {CCI_REG8(0x25), 0x01}, {CCI_REG8(0x26), 0x10}, {CCI_REG8(0x2d), 0x60}, + {CCI_REG8(0x30), 0x01}, {CCI_REG8(0x31), 0x90}, {CCI_REG8(0x33), 0x06}, + {CCI_REG8(0x34), 0x01}, + /* ISP related */ + {CCI_REG8(0x80), 0x7f}, {CCI_REG8(0x81), 0x26}, {CCI_REG8(0x82), 0xfa}, + {CCI_REG8(0x83), 0x00}, {CCI_REG8(0x84), 0x02}, {CCI_REG8(0x86), 0x02}, + {CCI_REG8(0x88), 0x03}, + {GC2145_REG_BYPASS_MODE, 0x03}, + {CCI_REG8(0x85), 0x08}, {CCI_REG8(0x8a), 0x00}, {CCI_REG8(0x8b), 0x00}, + {GC2145_REG_GLOBAL_GAIN, GC2145_DEFAULT_GLOBAL_GAIN}, + {CCI_REG8(0xc3), 0x00}, {CCI_REG8(0xc4), 0x80}, {CCI_REG8(0xc5), 0x90}, + {CCI_REG8(0xc6), 0x3b}, {CCI_REG8(0xc7), 0x46}, + /* BLK */ + {GC2145_REG_PAGE_SELECT, 0x00}, + {CCI_REG8(0x40), 0x42}, {CCI_REG8(0x41), 0x00}, {CCI_REG8(0x43), 0x5b}, + {CCI_REG8(0x5e), 0x00}, {CCI_REG8(0x5f), 0x00}, {CCI_REG8(0x60), 0x00}, + {CCI_REG8(0x61), 0x00}, {CCI_REG8(0x62), 0x00}, {CCI_REG8(0x63), 0x00}, + {CCI_REG8(0x64), 0x00}, {CCI_REG8(0x65), 0x00}, {CCI_REG8(0x66), 0x20}, + {CCI_REG8(0x67), 0x20}, {CCI_REG8(0x68), 0x20}, {CCI_REG8(0x69), 0x20}, + {CCI_REG8(0x76), 0x00}, {CCI_REG8(0x6a), 0x08}, {CCI_REG8(0x6b), 0x08}, + {CCI_REG8(0x6c), 0x08}, {CCI_REG8(0x6d), 0x08}, {CCI_REG8(0x6e), 0x08}, + {CCI_REG8(0x6f), 0x08}, {CCI_REG8(0x70), 0x08}, {CCI_REG8(0x71), 0x08}, + {CCI_REG8(0x76), 0x00}, {CCI_REG8(0x72), 0xf0}, {CCI_REG8(0x7e), 0x3c}, + {CCI_REG8(0x7f), 0x00}, + {GC2145_REG_PAGE_SELECT, 0x02}, + {CCI_REG8(0x48), 0x15}, {CCI_REG8(0x49), 0x00}, {CCI_REG8(0x4b), 0x0b}, + /* AEC */ + {GC2145_REG_PAGE_SELECT, 0x00}, + {GC2145_REG_EXPOSURE, GC2145_DEFAULT_EXPOSURE}, + {GC2145_REG_PAGE_SELECT, 0x01}, + {CCI_REG8(0x01), 0x04}, {CCI_REG8(0x02), 0xc0}, {CCI_REG8(0x03), 0x04}, + {CCI_REG8(0x04), 0x90}, {CCI_REG8(0x05), 0x30}, {CCI_REG8(0x06), 0x90}, + {CCI_REG8(0x07), 0x30}, {CCI_REG8(0x08), 0x80}, {CCI_REG8(0x09), 0x00}, + {CCI_REG8(0x0a), 0x82}, {CCI_REG8(0x0b), 0x11}, {CCI_REG8(0x0c), 0x10}, + {CCI_REG8(0x11), 0x10}, {CCI_REG8(0x13), 0x7b}, {CCI_REG8(0x17), 0x00}, + {CCI_REG8(0x1c), 0x11}, {CCI_REG8(0x1e), 0x61}, {CCI_REG8(0x1f), 0x35}, + {CCI_REG8(0x20), 0x40}, {CCI_REG8(0x22), 0x40}, {CCI_REG8(0x23), 0x20}, + {GC2145_REG_PAGE_SELECT, 0x02}, + {CCI_REG8(0x0f), 0x04}, + {GC2145_REG_PAGE_SELECT, 0x01}, + {CCI_REG8(0x12), 0x35}, {CCI_REG8(0x15), 0xb0}, {CCI_REG8(0x10), 0x31}, + {CCI_REG8(0x3e), 0x28}, {CCI_REG8(0x3f), 0xb0}, {CCI_REG8(0x40), 0x90}, + {CCI_REG8(0x41), 0x0f}, + /* INTPEE */ + {GC2145_REG_PAGE_SELECT, 0x02}, + {CCI_REG8(0x90), 0x6c}, {CCI_REG8(0x91), 0x03}, {CCI_REG8(0x92), 0xcb}, + {CCI_REG8(0x94), 0x33}, {CCI_REG8(0x95), 0x84}, {CCI_REG8(0x97), 0x65}, + {CCI_REG8(0xa2), 0x11}, + /* DNDD */ + {GC2145_REG_PAGE_SELECT, 0x02}, + {CCI_REG8(0x80), 0xc1}, {CCI_REG8(0x81), 0x08}, {CCI_REG8(0x82), 0x05}, + {CCI_REG8(0x83), 0x08}, {CCI_REG8(0x84), 0x0a}, {CCI_REG8(0x86), 0xf0}, + {CCI_REG8(0x87), 0x50}, {CCI_REG8(0x88), 0x15}, {CCI_REG8(0x89), 0xb0}, + {CCI_REG8(0x8a), 0x30}, {CCI_REG8(0x8b), 0x10}, + /* ASDE */ + {GC2145_REG_PAGE_SELECT, 0x01}, + {CCI_REG8(0x21), 0x04}, + {GC2145_REG_PAGE_SELECT, 0x02}, + {CCI_REG8(0xa3), 0x50}, {CCI_REG8(0xa4), 0x20}, {CCI_REG8(0xa5), 0x40}, + {CCI_REG8(0xa6), 0x80}, {CCI_REG8(0xab), 0x40}, {CCI_REG8(0xae), 0x0c}, + {CCI_REG8(0xb3), 0x46}, {CCI_REG8(0xb4), 0x64}, {CCI_REG8(0xb6), 0x38}, + {CCI_REG8(0xb7), 0x01}, {CCI_REG8(0xb9), 0x2b}, {CCI_REG8(0x3c), 0x04}, + {CCI_REG8(0x3d), 0x15}, {CCI_REG8(0x4b), 0x06}, {CCI_REG8(0x4c), 0x20}, + /* Gamma */ + {GC2145_REG_PAGE_SELECT, 0x02}, + {CCI_REG8(0x10), 0x09}, {CCI_REG8(0x11), 0x0d}, {CCI_REG8(0x12), 0x13}, + {CCI_REG8(0x13), 0x19}, {CCI_REG8(0x14), 0x27}, {CCI_REG8(0x15), 0x37}, + {CCI_REG8(0x16), 0x45}, {CCI_REG8(0x17), 0x53}, {CCI_REG8(0x18), 0x69}, + {CCI_REG8(0x19), 0x7d}, {CCI_REG8(0x1a), 0x8f}, {CCI_REG8(0x1b), 0x9d}, + {CCI_REG8(0x1c), 0xa9}, {CCI_REG8(0x1d), 0xbd}, {CCI_REG8(0x1e), 0xcd}, + {CCI_REG8(0x1f), 0xd9}, {CCI_REG8(0x20), 0xe3}, {CCI_REG8(0x21), 0xea}, + {CCI_REG8(0x22), 0xef}, {CCI_REG8(0x23), 0xf5}, {CCI_REG8(0x24), 0xf9}, + {CCI_REG8(0x25), 0xff}, + {GC2145_REG_PAGE_SELECT, 0x00}, + {CCI_REG8(0xc6), 0x20}, {CCI_REG8(0xc7), 0x2b}, + /* Gamma 2 */ + {GC2145_REG_PAGE_SELECT, 0x02}, + {CCI_REG8(0x26), 0x0f}, {CCI_REG8(0x27), 0x14}, {CCI_REG8(0x28), 0x19}, + {CCI_REG8(0x29), 0x1e}, {CCI_REG8(0x2a), 0x27}, {CCI_REG8(0x2b), 0x33}, + {CCI_REG8(0x2c), 0x3b}, {CCI_REG8(0x2d), 0x45}, {CCI_REG8(0x2e), 0x59}, + {CCI_REG8(0x2f), 0x69}, {CCI_REG8(0x30), 0x7c}, {CCI_REG8(0x31), 0x89}, + {CCI_REG8(0x32), 0x98}, {CCI_REG8(0x33), 0xae}, {CCI_REG8(0x34), 0xc0}, + {CCI_REG8(0x35), 0xcf}, {CCI_REG8(0x36), 0xda}, {CCI_REG8(0x37), 0xe2}, + {CCI_REG8(0x38), 0xe9}, {CCI_REG8(0x39), 0xf3}, {CCI_REG8(0x3a), 0xf9}, + {CCI_REG8(0x3b), 0xff}, + /* YCP */ + {GC2145_REG_PAGE_SELECT, 0x02}, + {CCI_REG8(0xd1), 0x32}, {CCI_REG8(0xd2), 0x32}, {CCI_REG8(0xd3), 0x40}, + {CCI_REG8(0xd6), 0xf0}, {CCI_REG8(0xd7), 0x10}, {CCI_REG8(0xd8), 0xda}, + {CCI_REG8(0xdd), 0x14}, {CCI_REG8(0xde), 0x86}, {CCI_REG8(0xed), 0x80}, + {CCI_REG8(0xee), 0x00}, {CCI_REG8(0xef), 0x3f}, {CCI_REG8(0xd8), 0xd8}, + /* ABS */ + {GC2145_REG_PAGE_SELECT, 0x01}, + {CCI_REG8(0x9f), 0x40}, + /* LSC */ + {GC2145_REG_PAGE_SELECT, 0x01}, + {CCI_REG8(0xc2), 0x14}, {CCI_REG8(0xc3), 0x0d}, {CCI_REG8(0xc4), 0x0c}, + {CCI_REG8(0xc8), 0x15}, {CCI_REG8(0xc9), 0x0d}, {CCI_REG8(0xca), 0x0a}, + {CCI_REG8(0xbc), 0x24}, {CCI_REG8(0xbd), 0x10}, {CCI_REG8(0xbe), 0x0b}, + {CCI_REG8(0xb6), 0x25}, {CCI_REG8(0xb7), 0x16}, {CCI_REG8(0xb8), 0x15}, + {CCI_REG8(0xc5), 0x00}, {CCI_REG8(0xc6), 0x00}, {CCI_REG8(0xc7), 0x00}, + {CCI_REG8(0xcb), 0x00}, {CCI_REG8(0xcc), 0x00}, {CCI_REG8(0xcd), 0x00}, + {CCI_REG8(0xbf), 0x07}, {CCI_REG8(0xc0), 0x00}, {CCI_REG8(0xc1), 0x00}, + {CCI_REG8(0xb9), 0x00}, {CCI_REG8(0xba), 0x00}, {CCI_REG8(0xbb), 0x00}, + {CCI_REG8(0xaa), 0x01}, {CCI_REG8(0xab), 0x01}, {CCI_REG8(0xac), 0x00}, + {CCI_REG8(0xad), 0x05}, {CCI_REG8(0xae), 0x06}, {CCI_REG8(0xaf), 0x0e}, + {CCI_REG8(0xb0), 0x0b}, {CCI_REG8(0xb1), 0x07}, {CCI_REG8(0xb2), 0x06}, + {CCI_REG8(0xb3), 0x17}, {CCI_REG8(0xb4), 0x0e}, {CCI_REG8(0xb5), 0x0e}, + {CCI_REG8(0xd0), 0x09}, {CCI_REG8(0xd1), 0x00}, {CCI_REG8(0xd2), 0x00}, + {CCI_REG8(0xd6), 0x08}, {CCI_REG8(0xd7), 0x00}, {CCI_REG8(0xd8), 0x00}, + {CCI_REG8(0xd9), 0x00}, {CCI_REG8(0xda), 0x00}, {CCI_REG8(0xdb), 0x00}, + {CCI_REG8(0xd3), 0x0a}, {CCI_REG8(0xd4), 0x00}, {CCI_REG8(0xd5), 0x00}, + {CCI_REG8(0xa4), 0x00}, {CCI_REG8(0xa5), 0x00}, {CCI_REG8(0xa6), 0x77}, + {CCI_REG8(0xa7), 0x77}, {CCI_REG8(0xa8), 0x77}, {CCI_REG8(0xa9), 0x77}, + {CCI_REG8(0xa1), 0x80}, {CCI_REG8(0xa2), 0x80}, + {GC2145_REG_PAGE_SELECT, 0x01}, + {CCI_REG8(0xdf), 0x0d}, {CCI_REG8(0xdc), 0x25}, {CCI_REG8(0xdd), 0x30}, + {CCI_REG8(0xe0), 0x77}, {CCI_REG8(0xe1), 0x80}, {CCI_REG8(0xe2), 0x77}, + {CCI_REG8(0xe3), 0x90}, {CCI_REG8(0xe6), 0x90}, {CCI_REG8(0xe7), 0xa0}, + {CCI_REG8(0xe8), 0x90}, {CCI_REG8(0xe9), 0xa0}, + /* AWB */ + /* measure window */ + {GC2145_REG_PAGE_SELECT, 0x00}, + {CCI_REG8(0xec), 0x06}, {CCI_REG8(0xed), 0x04}, {CCI_REG8(0xee), 0x60}, + {CCI_REG8(0xef), 0x90}, {CCI_REG8(0xb6), 0x01}, + {GC2145_REG_PAGE_SELECT, 0x01}, + {CCI_REG8(0x4f), 0x00}, {CCI_REG8(0x4f), 0x00}, {CCI_REG8(0x4b), 0x01}, + {CCI_REG8(0x4f), 0x00}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x71}, {CCI_REG8(0x4e), 0x01}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x91}, {CCI_REG8(0x4e), 0x01}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x70}, {CCI_REG8(0x4e), 0x01}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x90}, {CCI_REG8(0x4e), 0x02}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xb0}, {CCI_REG8(0x4e), 0x02}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x8f}, {CCI_REG8(0x4e), 0x02}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x6f}, {CCI_REG8(0x4e), 0x02}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xaf}, {CCI_REG8(0x4e), 0x02}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xd0}, {CCI_REG8(0x4e), 0x02}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xf0}, {CCI_REG8(0x4e), 0x02}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xcf}, {CCI_REG8(0x4e), 0x02}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xef}, {CCI_REG8(0x4e), 0x02}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x6e}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x8e}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xae}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xce}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x4d}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x6d}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x8d}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xad}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xcd}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x4c}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x6c}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x8c}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xac}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xcc}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xcb}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x4b}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x6b}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x8b}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xab}, {CCI_REG8(0x4e), 0x03}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x8a}, {CCI_REG8(0x4e), 0x04}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xaa}, {CCI_REG8(0x4e), 0x04}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xca}, {CCI_REG8(0x4e), 0x04}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xca}, {CCI_REG8(0x4e), 0x04}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xc9}, {CCI_REG8(0x4e), 0x04}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x8a}, {CCI_REG8(0x4e), 0x04}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0x89}, {CCI_REG8(0x4e), 0x04}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xa9}, {CCI_REG8(0x4e), 0x04}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x0b}, {CCI_REG8(0x4e), 0x05}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x0a}, {CCI_REG8(0x4e), 0x05}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xeb}, {CCI_REG8(0x4e), 0x05}, + {CCI_REG8(0x4c), 0x01}, {CCI_REG8(0x4d), 0xea}, {CCI_REG8(0x4e), 0x05}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x09}, {CCI_REG8(0x4e), 0x05}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x29}, {CCI_REG8(0x4e), 0x05}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x2a}, {CCI_REG8(0x4e), 0x05}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x4a}, {CCI_REG8(0x4e), 0x05}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x8a}, {CCI_REG8(0x4e), 0x06}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x49}, {CCI_REG8(0x4e), 0x06}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x69}, {CCI_REG8(0x4e), 0x06}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x89}, {CCI_REG8(0x4e), 0x06}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0xa9}, {CCI_REG8(0x4e), 0x06}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x48}, {CCI_REG8(0x4e), 0x06}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x68}, {CCI_REG8(0x4e), 0x06}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0x69}, {CCI_REG8(0x4e), 0x06}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0xca}, {CCI_REG8(0x4e), 0x07}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0xc9}, {CCI_REG8(0x4e), 0x07}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0xe9}, {CCI_REG8(0x4e), 0x07}, + {CCI_REG8(0x4c), 0x03}, {CCI_REG8(0x4d), 0x09}, {CCI_REG8(0x4e), 0x07}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0xc8}, {CCI_REG8(0x4e), 0x07}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0xe8}, {CCI_REG8(0x4e), 0x07}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0xa7}, {CCI_REG8(0x4e), 0x07}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0xc7}, {CCI_REG8(0x4e), 0x07}, + {CCI_REG8(0x4c), 0x02}, {CCI_REG8(0x4d), 0xe7}, {CCI_REG8(0x4e), 0x07}, + {CCI_REG8(0x4c), 0x03}, {CCI_REG8(0x4d), 0x07}, {CCI_REG8(0x4e), 0x07}, + {CCI_REG8(0x4f), 0x01}, + {CCI_REG8(0x50), 0x80}, {CCI_REG8(0x51), 0xa8}, {CCI_REG8(0x52), 0x47}, + {CCI_REG8(0x53), 0x38}, {CCI_REG8(0x54), 0xc7}, {CCI_REG8(0x56), 0x0e}, + {CCI_REG8(0x58), 0x08}, {CCI_REG8(0x5b), 0x00}, {CCI_REG8(0x5c), 0x74}, + {CCI_REG8(0x5d), 0x8b}, {CCI_REG8(0x61), 0xdb}, {CCI_REG8(0x62), 0xb8}, + {CCI_REG8(0x63), 0x86}, {CCI_REG8(0x64), 0xc0}, {CCI_REG8(0x65), 0x04}, + {CCI_REG8(0x67), 0xa8}, {CCI_REG8(0x68), 0xb0}, {CCI_REG8(0x69), 0x00}, + {CCI_REG8(0x6a), 0xa8}, {CCI_REG8(0x6b), 0xb0}, {CCI_REG8(0x6c), 0xaf}, + {CCI_REG8(0x6d), 0x8b}, {CCI_REG8(0x6e), 0x50}, {CCI_REG8(0x6f), 0x18}, + {CCI_REG8(0x73), 0xf0}, {CCI_REG8(0x70), 0x0d}, {CCI_REG8(0x71), 0x60}, + {CCI_REG8(0x72), 0x80}, {CCI_REG8(0x74), 0x01}, {CCI_REG8(0x75), 0x01}, + {CCI_REG8(0x7f), 0x0c}, {CCI_REG8(0x76), 0x70}, {CCI_REG8(0x77), 0x58}, + {CCI_REG8(0x78), 0xa0}, {CCI_REG8(0x79), 0x5e}, {CCI_REG8(0x7a), 0x54}, + {CCI_REG8(0x7b), 0x58}, + /* CC */ + {GC2145_REG_PAGE_SELECT, 0x02}, + {CCI_REG8(0xc0), 0x01}, {CCI_REG8(0xc1), 0x44}, {CCI_REG8(0xc2), 0xfd}, + {CCI_REG8(0xc3), 0x04}, {CCI_REG8(0xc4), 0xf0}, {CCI_REG8(0xc5), 0x48}, + {CCI_REG8(0xc6), 0xfd}, {CCI_REG8(0xc7), 0x46}, {CCI_REG8(0xc8), 0xfd}, + {CCI_REG8(0xc9), 0x02}, {CCI_REG8(0xca), 0xe0}, {CCI_REG8(0xcb), 0x45}, + {CCI_REG8(0xcc), 0xec}, {CCI_REG8(0xcd), 0x48}, {CCI_REG8(0xce), 0xf0}, + {CCI_REG8(0xcf), 0xf0}, {CCI_REG8(0xe3), 0x0c}, {CCI_REG8(0xe4), 0x4b}, + {CCI_REG8(0xe5), 0xe0}, + /* ABS */ + {GC2145_REG_PAGE_SELECT, 0x01}, + {CCI_REG8(0x9f), 0x40}, + /* Dark sun */ + {GC2145_REG_PAGE_SELECT, 0x02}, + {CCI_REG8(0x40), 0xbf}, {CCI_REG8(0x46), 0xcf}, +}; + +#define GC2145_640_480_PIXELRATE 30000000 +#define GC2145_640_480_LINKFREQ 120000000 +#define GC2145_640_480_HBLANK 0x0130 +#define GC2145_640_480_VBLANK 0x000c +static const struct cci_reg_sequence gc2145_mode_640_480_regs[] = { + {GC2145_REG_PAGE_SELECT, 0xf0}, {GC2145_REG_PAGE_SELECT, 0xf0}, + {GC2145_REG_PAGE_SELECT, 0xf0}, {CCI_REG8(0xfc), 0x06}, + {CCI_REG8(0xf6), 0x00}, {CCI_REG8(0xf7), 0x1d}, {CCI_REG8(0xf8), 0x86}, + {CCI_REG8(0xfa), 0x00}, {CCI_REG8(0xf9), 0x8e}, + /* Disable PAD IO */ + {GC2145_REG_PAD_IO, 0x00}, + {GC2145_REG_PAGE_SELECT, 0x00}, + /* Row/Col start - 0/0 */ + {GC2145_REG_ROW_START, 0x0000}, + {GC2145_REG_COL_START, 0x0000}, + /* Window size 1216/1618 */ + {GC2145_REG_WIN_HEIGHT, 0x04c0}, + {GC2145_REG_WIN_WIDTH, 0x0652}, + /* Scalar more */ + {CCI_REG8(0xfd), 0x01}, {CCI_REG8(0xfa), 0x00}, + /* Crop 640-480@0-0 */ + {GC2145_REG_CROP_ENABLE, 0x01}, + {GC2145_REG_CROP_Y, 0x0000}, + {GC2145_REG_CROP_X, 0x0000}, + {GC2145_REG_CROP_HEIGHT, 0x01e0}, + {GC2145_REG_CROP_WIDTH, 0x0280}, + /* Subsampling configuration */ + {CCI_REG8(0x99), 0x55}, {CCI_REG8(0x9a), 0x06}, {CCI_REG8(0x9b), 0x01}, + {CCI_REG8(0x9c), 0x23}, {CCI_REG8(0x9d), 0x00}, {CCI_REG8(0x9e), 0x00}, + {CCI_REG8(0x9f), 0x01}, {CCI_REG8(0xa0), 0x23}, {CCI_REG8(0xa1), 0x00}, + {CCI_REG8(0xa2), 0x00}, + {GC2145_REG_PAGE_SELECT, 0x01}, + /* AEC anti-flicker */ + {CCI_REG16(0x25), 0x0175}, + /* AEC exposure level 1-5 */ + {CCI_REG16(0x27), 0x045f}, {CCI_REG16(0x29), 0x045f}, + {CCI_REG16(0x2b), 0x045f}, {CCI_REG16(0x2d), 0x045f}, +}; + +#define GC2145_1280_720_PIXELRATE 48000000 +#define GC2145_1280_720_LINKFREQ 192000000 +#define GC2145_1280_720_HBLANK 0x0156 +#define GC2145_1280_720_VBLANK 0x0011 +static const struct cci_reg_sequence gc2145_mode_1280_720_regs[] = { + {GC2145_REG_PAGE_SELECT, 0xf0}, {GC2145_REG_PAGE_SELECT, 0xf0}, + {GC2145_REG_PAGE_SELECT, 0xf0}, {CCI_REG8(0xfc), 0x06}, + {CCI_REG8(0xf6), 0x00}, {CCI_REG8(0xf7), 0x1d}, {CCI_REG8(0xf8), 0x83}, + {CCI_REG8(0xfa), 0x00}, {CCI_REG8(0xf9), 0x8e}, + /* Disable PAD IO */ + {GC2145_REG_PAD_IO, 0x00}, + {GC2145_REG_PAGE_SELECT, 0x00}, + /* Row/Col start - 240/160 */ + {GC2145_REG_ROW_START, 0x00f0}, + {GC2145_REG_COL_START, 0x00a0}, + /* Window size 736/1296 */ + {GC2145_REG_WIN_HEIGHT, 0x02e0}, + {GC2145_REG_WIN_WIDTH, 0x0510}, + /* Crop 1280-720@0-0 */ + {GC2145_REG_CROP_ENABLE, 0x01}, + {GC2145_REG_CROP_Y, 0x0000}, + {GC2145_REG_CROP_X, 0x0000}, + {GC2145_REG_CROP_HEIGHT, 0x02d0}, + {GC2145_REG_CROP_WIDTH, 0x0500}, + {GC2145_REG_PAGE_SELECT, 0x01}, + /* AEC anti-flicker */ + {CCI_REG16(0x25), 0x00e6}, + /* AEC exposure level 1-5 */ + {CCI_REG16(0x27), 0x02b2}, {CCI_REG16(0x29), 0x02b2}, + {CCI_REG16(0x2b), 0x02b2}, {CCI_REG16(0x2d), 0x02b2}, +}; + +#define GC2145_1600_1200_PIXELRATE 60000000 +#define GC2145_1600_1200_LINKFREQ 240000000 +#define GC2145_1600_1200_HBLANK 0x0156 +#define GC2145_1600_1200_VBLANK 0x0010 +static const struct cci_reg_sequence gc2145_mode_1600_1200_regs[] = { + {GC2145_REG_PAGE_SELECT, 0xf0}, {GC2145_REG_PAGE_SELECT, 0xf0}, + {GC2145_REG_PAGE_SELECT, 0xf0}, {CCI_REG8(0xfc), 0x06}, + {CCI_REG8(0xf6), 0x00}, {CCI_REG8(0xf7), 0x1d}, {CCI_REG8(0xf8), 0x84}, + {CCI_REG8(0xfa), 0x00}, {CCI_REG8(0xf9), 0x8e}, + /* Disable PAD IO */ + {GC2145_REG_PAD_IO, 0x00}, + {GC2145_REG_PAGE_SELECT, 0x00}, + /* Row/Col start - 0/0 */ + {GC2145_REG_ROW_START, 0x0000}, + {GC2145_REG_COL_START, 0x0000}, + /* Window size: 1216/1618 */ + {GC2145_REG_WIN_HEIGHT, 0x04c0}, + {GC2145_REG_WIN_WIDTH, 0x0652}, + /* Crop 1600-1200@0-0 */ + {GC2145_REG_CROP_ENABLE, 0x01}, + {GC2145_REG_CROP_Y, 0x0000}, + {GC2145_REG_CROP_X, 0x0000}, + {GC2145_REG_CROP_HEIGHT, 0x04b0}, + {GC2145_REG_CROP_WIDTH, 0x0640}, + {GC2145_REG_PAGE_SELECT, 0x01}, + /* AEC anti-flicker */ + {CCI_REG16(0x25), 0x00fa}, + /* AEC exposure level 1-5 */ + {CCI_REG16(0x27), 0x04e2}, {CCI_REG16(0x29), 0x04e2}, + {CCI_REG16(0x2b), 0x04e2}, {CCI_REG16(0x2d), 0x04e2}, +}; + +static const s64 gc2145_link_freq_menu[] = { + GC2145_640_480_LINKFREQ, + GC2145_1280_720_LINKFREQ, + GC2145_1600_1200_LINKFREQ, +}; + +/* Regulators supplies */ +static const char * const gc2145_supply_name[] = { + "iovdd", /* Digital I/O (1.7-3V) suppply */ + "avdd", /* Analog (2.7-3V) supply */ + "dvdd", /* Digital Core (1.7-1.9V) supply */ +}; + +#define GC2145_NUM_SUPPLIES ARRAY_SIZE(gc2145_supply_name) + +/* Mode configs */ +#define GC2145_MODE_640X480 0 +#define GC2145_MODE_1280X720 1 +#define GC2145_MODE_1600X1200 2 +static const struct gc2145_mode supported_modes[] = { + { + /* 640x480 30fps mode */ + .width = 640, + .height = 480, + .reg_seq = gc2145_mode_640_480_regs, + .reg_seq_size = ARRAY_SIZE(gc2145_mode_640_480_regs), + .pixel_rate = GC2145_640_480_PIXELRATE, + .crop = { + .top = 0, + .left = 0, + .width = 640, + .height = 480, + }, + .hblank = GC2145_640_480_HBLANK, + .vblank = GC2145_640_480_VBLANK, + .link_freq_index = GC2145_MODE_640X480, + }, + { + /* 1280x720 30fps mode */ + .width = 1280, + .height = 720, + .reg_seq = gc2145_mode_1280_720_regs, + .reg_seq_size = ARRAY_SIZE(gc2145_mode_1280_720_regs), + .pixel_rate = GC2145_1280_720_PIXELRATE, + .crop = { + .top = 160, + .left = 240, + .width = 1280, + .height = 720, + }, + .hblank = GC2145_1280_720_HBLANK, + .vblank = GC2145_1280_720_VBLANK, + .link_freq_index = GC2145_MODE_1280X720, + }, + { + /* 1600x1200 20fps mode */ + .width = 1600, + .height = 1200, + .reg_seq = gc2145_mode_1600_1200_regs, + .reg_seq_size = ARRAY_SIZE(gc2145_mode_1600_1200_regs), + .pixel_rate = GC2145_1600_1200_PIXELRATE, + .crop = { + .top = 0, + .left = 0, + .width = 1600, + .height = 1200, + }, + .hblank = GC2145_1600_1200_HBLANK, + .vblank = GC2145_1600_1200_VBLANK, + .link_freq_index = GC2145_MODE_1600X1200, + }, +}; + +/** + * struct gc2145_format - GC2145 pixel format description + * @code: media bus (MBUS) associated code + * @datatype: MIPI CSI2 data type + * @output_fmt: GC2145 output format + * @switch_bit: GC2145 first/second switch + */ +struct gc2145_format { + unsigned int code; + unsigned char datatype; + unsigned char output_fmt; + bool switch_bit; +}; + +/* All supported formats */ +static const struct gc2145_format supported_formats[] = { + { + .code = MEDIA_BUS_FMT_UYVY8_1X16, + .datatype = MIPI_CSI2_DT_YUV422_8B, + .output_fmt = 0x00, + }, + { + .code = MEDIA_BUS_FMT_VYUY8_1X16, + .datatype = MIPI_CSI2_DT_YUV422_8B, + .output_fmt = 0x01, + }, + { + .code = MEDIA_BUS_FMT_YUYV8_1X16, + .datatype = MIPI_CSI2_DT_YUV422_8B, + .output_fmt = 0x02, + }, + { + .code = MEDIA_BUS_FMT_YVYU8_1X16, + .datatype = MIPI_CSI2_DT_YUV422_8B, + .output_fmt = 0x03, + }, + { + .code = MEDIA_BUS_FMT_RGB565_1X16, + .datatype = MIPI_CSI2_DT_RGB565, + .output_fmt = 0x06, + .switch_bit = true, + }, +}; + +struct gc2145_ctrls { + struct v4l2_ctrl_handler handler; + struct v4l2_ctrl *pixel_rate; + struct v4l2_ctrl *link_freq; + struct v4l2_ctrl *test_pattern; + struct v4l2_ctrl *hflip; + struct v4l2_ctrl *vflip; + struct v4l2_ctrl *hblank; + struct v4l2_ctrl *vblank; +}; + +struct gc2145 { + struct v4l2_subdev sd; + struct media_pad pad; + + struct regmap *regmap; + struct clk *xclk; + + struct gpio_desc *reset_gpio; + struct gpio_desc *powerdown_gpio; + struct regulator_bulk_data supplies[GC2145_NUM_SUPPLIES]; + + /* V4L2 controls */ + struct gc2145_ctrls ctrls; + + /* Current mode */ + const struct gc2145_mode *mode; +}; + +static inline struct gc2145 *to_gc2145(struct v4l2_subdev *_sd) +{ + return container_of(_sd, struct gc2145, sd); +} + +static inline struct v4l2_subdev *gc2145_ctrl_to_sd(struct v4l2_ctrl *ctrl) +{ + return &container_of(ctrl->handler, struct gc2145, + ctrls.handler)->sd; +} + +static const struct gc2145_format * +gc2145_get_format_code(struct gc2145 *gc2145, u32 code) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(supported_formats); i++) { + if (supported_formats[i].code == code) + break; + } + + if (i >= ARRAY_SIZE(supported_formats)) + i = 0; + + return &supported_formats[i]; +} + +static void gc2145_update_pad_format(struct gc2145 *gc2145, + const struct gc2145_mode *mode, + struct v4l2_mbus_framefmt *fmt, u32 code) +{ + fmt->code = code; + fmt->width = mode->width; + fmt->height = mode->height; + fmt->field = V4L2_FIELD_NONE; + fmt->colorspace = V4L2_COLORSPACE_SRGB; + fmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; + fmt->quantization = V4L2_QUANTIZATION_DEFAULT; + fmt->xfer_func = V4L2_XFER_FUNC_DEFAULT; +} + +static int gc2145_init_cfg(struct v4l2_subdev *sd, + struct v4l2_subdev_state *state) +{ + struct gc2145 *gc2145 = to_gc2145(sd); + struct v4l2_mbus_framefmt *format; + struct v4l2_rect *crop; + + /* Initialize pad format */ + format = v4l2_subdev_state_get_format(state, 0); + gc2145_update_pad_format(gc2145, &supported_modes[0], format, + MEDIA_BUS_FMT_RGB565_1X16); + + /* Initialize crop rectangle. */ + crop = v4l2_subdev_state_get_crop(state, 0); + *crop = supported_modes[0].crop; + + return 0; +} + +static int gc2145_get_selection(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_selection *sel) +{ + switch (sel->target) { + case V4L2_SEL_TGT_CROP: + sel->r = *v4l2_subdev_state_get_crop(sd_state, 0); + return 0; + + case V4L2_SEL_TGT_NATIVE_SIZE: + sel->r.top = 0; + sel->r.left = 0; + sel->r.width = GC2145_NATIVE_WIDTH; + sel->r.height = GC2145_NATIVE_HEIGHT; + + return 0; + + case V4L2_SEL_TGT_CROP_DEFAULT: + case V4L2_SEL_TGT_CROP_BOUNDS: + sel->r.top = 0; + sel->r.left = 0; + sel->r.width = 1600; + sel->r.height = 1200; + + return 0; + } + + return -EINVAL; +} + +static int gc2145_enum_mbus_code(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_mbus_code_enum *code) +{ + if (code->index >= ARRAY_SIZE(supported_formats)) + return -EINVAL; + + code->code = supported_formats[code->index].code; + return 0; +} + +static int gc2145_enum_frame_size(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_frame_size_enum *fse) +{ + struct gc2145 *gc2145 = to_gc2145(sd); + const struct gc2145_format *gc2145_format; + u32 code; + + if (fse->index >= ARRAY_SIZE(supported_modes)) + return -EINVAL; + + gc2145_format = gc2145_get_format_code(gc2145, fse->code); + code = gc2145_format->code; + if (fse->code != code) + return -EINVAL; + + fse->min_width = supported_modes[fse->index].width; + fse->max_width = fse->min_width; + fse->min_height = supported_modes[fse->index].height; + fse->max_height = fse->min_height; + + return 0; +} + +static int gc2145_set_pad_format(struct v4l2_subdev *sd, + struct v4l2_subdev_state *sd_state, + struct v4l2_subdev_format *fmt) +{ + struct gc2145 *gc2145 = to_gc2145(sd); + const struct gc2145_mode *mode; + const struct gc2145_format *gc2145_fmt; + struct v4l2_mbus_framefmt *framefmt; + struct gc2145_ctrls *ctrls = &gc2145->ctrls; + struct v4l2_rect *crop; + + gc2145_fmt = gc2145_get_format_code(gc2145, fmt->format.code); + mode = v4l2_find_nearest_size(supported_modes, + ARRAY_SIZE(supported_modes), + width, height, + fmt->format.width, fmt->format.height); + + gc2145_update_pad_format(gc2145, mode, &fmt->format, gc2145_fmt->code); + framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad); + if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE) { + gc2145->mode = mode; + /* Update pixel_rate based on the mode */ + __v4l2_ctrl_s_ctrl_int64(ctrls->pixel_rate, mode->pixel_rate); + /* Update link_freq based on the mode */ + __v4l2_ctrl_s_ctrl(ctrls->link_freq, mode->link_freq_index); + /* Update hblank/vblank based on the mode */ + __v4l2_ctrl_s_ctrl(ctrls->hblank, mode->hblank); + __v4l2_ctrl_s_ctrl(ctrls->vblank, mode->vblank); + } + *framefmt = fmt->format; + crop = v4l2_subdev_state_get_crop(sd_state, fmt->pad); + *crop = mode->crop; + + return 0; +} + +static const struct cci_reg_sequence gc2145_common_mipi_regs[] = { + {GC2145_REG_PAGE_SELECT, 0x03}, + {GC2145_REG_DPHY_ANALOG_MODE1, GC2145_DPHY_MODE_PHY_CLK_EN | + GC2145_DPHY_MODE_PHY_LANE0_EN | + GC2145_DPHY_MODE_PHY_LANE1_EN | + GC2145_DPHY_MODE_PHY_CLK_LANE_P2S_SEL}, + {GC2145_REG_DPHY_ANALOG_MODE2, GC2145_DPHY_CLK_DIFF(2) | + GC2145_DPHY_LANE0_DIFF(2)}, + {GC2145_REG_DPHY_ANALOG_MODE3, GC2145_DPHY_LANE1_DIFF(0) | + GC2145_DPHY_CLK_DELAY}, + {GC2145_REG_FIFO_MODE, GC2145_FIFO_MODE_READ_GATE | + GC2145_FIFO_MODE_MIPI_CLK_MODULE}, + {GC2145_REG_DPHY_MODE, GC2145_DPHY_MODE_TRIGGER_PROG}, + /* Clock & Data lanes timing */ + {GC2145_REG_T_LPX, 0x10}, + {GC2145_REG_T_CLK_HS_PREPARE, 0x04}, {GC2145_REG_T_CLK_ZERO, 0x10}, + {GC2145_REG_T_CLK_PRE, 0x10}, {GC2145_REG_T_CLK_POST, 0x10}, + {GC2145_REG_T_CLK_TRAIL, 0x05}, + {GC2145_REG_T_HS_PREPARE, 0x03}, {GC2145_REG_T_HS_ZERO, 0x0a}, + {GC2145_REG_T_HS_TRAIL, 0x06}, +}; + +static int gc2145_config_mipi_mode(struct gc2145 *gc2145, + const struct gc2145_format *gc2145_format) +{ + u16 lwc, fifo_full_lvl; + int ret = 0; + + /* Common MIPI settings */ + cci_multi_reg_write(gc2145->regmap, gc2145_common_mipi_regs, + ARRAY_SIZE(gc2145_common_mipi_regs), &ret); + + /* + * Adjust the MIPI buffer settings. + * For YUV/RGB, LWC = image width * 2 + * For RAW8, LWC = image width + * For RAW10, LWC = image width * 1.25 + */ + lwc = gc2145->mode->width * 2; + cci_write(gc2145->regmap, GC2145_REG_LWC_HIGH, lwc >> 8, &ret); + cci_write(gc2145->regmap, GC2145_REG_LWC_LOW, lwc & 0xff, &ret); + + /* + * Adjust the MIPI FIFO Full Level + * 640x480 RGB: 0x0190 + * 1280x720 / 1600x1200 (aka no scaler) non RAW: 0x0001 + * 1600x1200 RAW: 0x0190 + */ + if (gc2145->mode->width == 1280 || gc2145->mode->width == 1600) + fifo_full_lvl = 0x0001; + else + fifo_full_lvl = 0x0190; + + cci_write(gc2145->regmap, GC2145_REG_FIFO_FULL_LVL_HIGH, + fifo_full_lvl >> 8, &ret); + cci_write(gc2145->regmap, GC2145_REG_FIFO_FULL_LVL_LOW, + fifo_full_lvl & 0xff, &ret); + + /* + * Set the FIFO gate mode / MIPI wdiv set: + * 0xf1 in case of RAW mode and 0xf0 otherwise + */ + cci_write(gc2145->regmap, GC2145_REG_FIFO_GATE_MODE, 0xf0, &ret); + + /* Set the MIPI data type */ + cci_write(gc2145->regmap, GC2145_REG_MIPI_DT, + gc2145_format->datatype, &ret); + + /* Configure mode and enable CSI */ + cci_write(gc2145->regmap, GC2145_REG_BUF_CSI2_MODE, + GC2145_CSI2_MODE_RAW8 | GC2145_CSI2_MODE_DOUBLE | + GC2145_CSI2_MODE_EN | GC2145_CSI2_MODE_MIPI_EN, &ret); + + return ret; +} + +static int gc2145_start_streaming(struct gc2145 *gc2145, + struct v4l2_subdev_state *state) +{ + struct i2c_client *client = v4l2_get_subdevdata(&gc2145->sd); + const struct gc2145_format *gc2145_format; + struct v4l2_mbus_framefmt *fmt; + int ret; + + ret = pm_runtime_resume_and_get(&client->dev); + if (ret < 0) + return ret; + + /* Apply default values of current mode */ + cci_multi_reg_write(gc2145->regmap, gc2145->mode->reg_seq, + gc2145->mode->reg_seq_size, &ret); + cci_multi_reg_write(gc2145->regmap, gc2145_common_regs, + ARRAY_SIZE(gc2145_common_regs), &ret); + if (ret) { + dev_err(&client->dev, "%s failed to write regs\n", __func__); + goto err_rpm_put; + } + + fmt = v4l2_subdev_state_get_format(state, 0); + gc2145_format = gc2145_get_format_code(gc2145, fmt->code); + + /* Set the output format */ + cci_write(gc2145->regmap, GC2145_REG_PAGE_SELECT, 0x00, &ret); + + cci_write(gc2145->regmap, GC2145_REG_OUTPUT_FMT, + gc2145_format->output_fmt, &ret); + cci_update_bits(gc2145->regmap, GC2145_REG_BYPASS_MODE, + GC2145_BYPASS_MODE_SWITCH, + gc2145_format->switch_bit ? GC2145_BYPASS_MODE_SWITCH + : 0, &ret); + if (ret) { + dev_err(&client->dev, "%s failed to write regs\n", __func__); + goto err_rpm_put; + } + + /* Apply customized values from user */ + ret = __v4l2_ctrl_handler_setup(&gc2145->ctrls.handler); + if (ret) { + dev_err(&client->dev, "%s failed to apply ctrls\n", __func__); + goto err_rpm_put; + } + + /* Perform MIPI specific configuration */ + ret = gc2145_config_mipi_mode(gc2145, gc2145_format); + if (ret) { + dev_err(&client->dev, "%s failed to write mipi conf\n", + __func__); + goto err_rpm_put; + } + + cci_write(gc2145->regmap, GC2145_REG_PAGE_SELECT, 0x00, &ret); + + return 0; + +err_rpm_put: + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + return ret; +} + +static void gc2145_stop_streaming(struct gc2145 *gc2145) +{ + struct i2c_client *client = v4l2_get_subdevdata(&gc2145->sd); + int ret = 0; + + /* Disable lanes & mipi streaming */ + cci_write(gc2145->regmap, GC2145_REG_PAGE_SELECT, 0x03, &ret); + cci_update_bits(gc2145->regmap, GC2145_REG_BUF_CSI2_MODE, + GC2145_CSI2_MODE_EN | GC2145_CSI2_MODE_MIPI_EN, 0, + &ret); + cci_write(gc2145->regmap, GC2145_REG_PAGE_SELECT, 0x00, &ret); + if (ret) + dev_err(&client->dev, "%s failed to write regs\n", __func__); + + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); +} + +static int gc2145_set_stream(struct v4l2_subdev *sd, int enable) +{ + struct gc2145 *gc2145 = to_gc2145(sd); + struct v4l2_subdev_state *state; + int ret = 0; + + state = v4l2_subdev_lock_and_get_active_state(sd); + + if (enable) + ret = gc2145_start_streaming(gc2145, state); + else + gc2145_stop_streaming(gc2145); + + v4l2_subdev_unlock_state(state); + + return ret; +} + +/* Power/clock management functions */ +static int gc2145_power_on(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct gc2145 *gc2145 = to_gc2145(sd); + int ret; + + ret = regulator_bulk_enable(GC2145_NUM_SUPPLIES, gc2145->supplies); + if (ret) { + dev_err(dev, "failed to enable regulators\n"); + return ret; + } + + ret = clk_prepare_enable(gc2145->xclk); + if (ret) { + dev_err(dev, "failed to enable clock\n"); + goto reg_off; + } + + gpiod_set_value_cansleep(gc2145->powerdown_gpio, 0); + gpiod_set_value_cansleep(gc2145->reset_gpio, 0); + + /* + * Datasheet doesn't mention timing between PWDN/RESETB control and + * i2c access however, experimentation shows that a rather big delay is + * needed. + */ + msleep(41); + + return 0; + +reg_off: + regulator_bulk_disable(GC2145_NUM_SUPPLIES, gc2145->supplies); + + return ret; +} + +static int gc2145_power_off(struct device *dev) +{ + struct v4l2_subdev *sd = dev_get_drvdata(dev); + struct gc2145 *gc2145 = to_gc2145(sd); + + gpiod_set_value_cansleep(gc2145->powerdown_gpio, 1); + gpiod_set_value_cansleep(gc2145->reset_gpio, 1); + clk_disable_unprepare(gc2145->xclk); + regulator_bulk_disable(GC2145_NUM_SUPPLIES, gc2145->supplies); + + return 0; +} + +static int gc2145_get_regulators(struct gc2145 *gc2145) +{ + struct i2c_client *client = v4l2_get_subdevdata(&gc2145->sd); + unsigned int i; + + for (i = 0; i < GC2145_NUM_SUPPLIES; i++) + gc2145->supplies[i].supply = gc2145_supply_name[i]; + + return devm_regulator_bulk_get(&client->dev, GC2145_NUM_SUPPLIES, + gc2145->supplies); +} + +/* Verify chip ID */ +static int gc2145_identify_module(struct gc2145 *gc2145) +{ + struct i2c_client *client = v4l2_get_subdevdata(&gc2145->sd); + int ret; + u64 chip_id; + + ret = cci_read(gc2145->regmap, GC2145_REG_CHIP_ID, &chip_id, NULL); + if (ret) { + dev_err(&client->dev, "failed to read chip id (%d)\n", ret); + return ret; + } + + if (chip_id != GC2145_CHIP_ID) { + dev_err(&client->dev, "chip id mismatch: %x!=%llx\n", + GC2145_CHIP_ID, chip_id); + return -EIO; + } + + return 0; +} + +static const char * const test_pattern_menu[] = { + "Disabled", + "Colored patterns", + "Uniform white", + "Uniform yellow", + "Uniform cyan", + "Uniform green", + "Uniform magenta", + "Uniform red", + "Uniform black", +}; + +#define GC2145_TEST_PATTERN_ENABLE BIT(0) +#define GC2145_TEST_PATTERN_UXGA BIT(3) + +#define GC2145_TEST_UNIFORM BIT(3) +#define GC2145_TEST_WHITE (4 << 4) +#define GC2145_TEST_YELLOW (8 << 4) +#define GC2145_TEST_CYAN (9 << 4) +#define GC2145_TEST_GREEN (6 << 4) +#define GC2145_TEST_MAGENTA (10 << 4) +#define GC2145_TEST_RED (5 << 4) +#define GC2145_TEST_BLACK (0) + +static const u8 test_pattern_val[] = { + 0, + GC2145_TEST_PATTERN_ENABLE, + GC2145_TEST_UNIFORM | GC2145_TEST_WHITE, + GC2145_TEST_UNIFORM | GC2145_TEST_YELLOW, + GC2145_TEST_UNIFORM | GC2145_TEST_CYAN, + GC2145_TEST_UNIFORM | GC2145_TEST_GREEN, + GC2145_TEST_UNIFORM | GC2145_TEST_MAGENTA, + GC2145_TEST_UNIFORM | GC2145_TEST_RED, + GC2145_TEST_UNIFORM | GC2145_TEST_BLACK, +}; + +static const struct v4l2_subdev_core_ops gc2145_core_ops = { + .subscribe_event = v4l2_ctrl_subdev_subscribe_event, + .unsubscribe_event = v4l2_event_subdev_unsubscribe, +}; + +static const struct v4l2_subdev_video_ops gc2145_video_ops = { + .s_stream = gc2145_set_stream, +}; + +static const struct v4l2_subdev_pad_ops gc2145_pad_ops = { + .init_cfg = gc2145_init_cfg, + .enum_mbus_code = gc2145_enum_mbus_code, + .get_fmt = v4l2_subdev_get_fmt, + .set_fmt = gc2145_set_pad_format, + .get_selection = gc2145_get_selection, + .enum_frame_size = gc2145_enum_frame_size, +}; + +static const struct v4l2_subdev_ops gc2145_subdev_ops = { + .core = &gc2145_core_ops, + .video = &gc2145_video_ops, + .pad = &gc2145_pad_ops, +}; + +static int gc2145_set_ctrl_test_pattern(struct gc2145 *gc2145, int value) +{ + int ret = 0; + + if (!value) { + /* Disable test pattern */ + cci_write(gc2145->regmap, GC2145_REG_DEBUG_MODE2, 0, &ret); + return cci_write(gc2145->regmap, GC2145_REG_DEBUG_MODE3, 0, + &ret); + } + + /* Enable test pattern, colored or uniform */ + cci_write(gc2145->regmap, GC2145_REG_DEBUG_MODE2, + GC2145_TEST_PATTERN_ENABLE | GC2145_TEST_PATTERN_UXGA, &ret); + + if (!(test_pattern_val[value] & GC2145_TEST_UNIFORM)) + return cci_write(gc2145->regmap, GC2145_REG_DEBUG_MODE3, 0, + &ret); + + /* Uniform */ + return cci_write(gc2145->regmap, GC2145_REG_DEBUG_MODE3, + test_pattern_val[value], &ret); +} + +static int gc2145_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct v4l2_subdev *sd = gc2145_ctrl_to_sd(ctrl); + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct gc2145 *gc2145 = to_gc2145(sd); + int ret; + + if (pm_runtime_get_if_in_use(&client->dev) == 0) + return 0; + + switch (ctrl->id) { + case V4L2_CID_HBLANK: + ret = cci_write(gc2145->regmap, GC2145_REG_HBLANK, ctrl->val, + NULL); + break; + case V4L2_CID_VBLANK: + ret = cci_write(gc2145->regmap, GC2145_REG_VBLANK, ctrl->val, + NULL); + break; + case V4L2_CID_TEST_PATTERN: + ret = gc2145_set_ctrl_test_pattern(gc2145, ctrl->val); + break; + case V4L2_CID_HFLIP: + ret = cci_update_bits(gc2145->regmap, GC2145_REG_ANALOG_MODE1, + BIT(0), (ctrl->val ? BIT(0) : 0), NULL); + break; + case V4L2_CID_VFLIP: + ret = cci_update_bits(gc2145->regmap, GC2145_REG_ANALOG_MODE1, + BIT(1), (ctrl->val ? BIT(1) : 0), NULL); + break; + default: + ret = -EINVAL; + break; + } + + pm_runtime_mark_last_busy(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + + return ret; +} + +static const struct v4l2_ctrl_ops gc2145_ctrl_ops = { + .s_ctrl = gc2145_s_ctrl, +}; + +/* Initialize control handlers */ +static int gc2145_init_controls(struct gc2145 *gc2145) +{ + struct i2c_client *client = v4l2_get_subdevdata(&gc2145->sd); + const struct v4l2_ctrl_ops *ops = &gc2145_ctrl_ops; + struct gc2145_ctrls *ctrls = &gc2145->ctrls; + struct v4l2_ctrl_handler *hdl = &ctrls->handler; + struct v4l2_fwnode_device_properties props; + int ret; + + ret = v4l2_ctrl_handler_init(hdl, 12); + if (ret) + return ret; + + ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_PIXEL_RATE, + GC2145_640_480_PIXELRATE, + GC2145_1600_1200_PIXELRATE, 1, + supported_modes[0].pixel_rate); + + ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, ops, V4L2_CID_LINK_FREQ, + ARRAY_SIZE(gc2145_link_freq_menu) - 1, + 0, gc2145_link_freq_menu); + if (ctrls->link_freq) + ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; + + ctrls->hblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK, + 0, 0xfff, 1, GC2145_640_480_HBLANK); + + ctrls->vblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK, + 0, 0x1fff, 1, GC2145_640_480_VBLANK); + + ctrls->test_pattern = + v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN, + ARRAY_SIZE(test_pattern_menu) - 1, + 0, 0, test_pattern_menu); + ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, + 0, 1, 1, 0); + ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, + 0, 1, 1, 0); + + if (hdl->error) { + ret = hdl->error; + dev_err(&client->dev, "control init failed (%d)\n", ret); + goto error; + } + + ret = v4l2_fwnode_device_parse(&client->dev, &props); + if (ret) + goto error; + + ret = v4l2_ctrl_new_fwnode_properties(hdl, &gc2145_ctrl_ops, + &props); + if (ret) + goto error; + + gc2145->sd.ctrl_handler = hdl; + + return 0; + +error: + v4l2_ctrl_handler_free(hdl); + + return ret; +} + +static int gc2145_check_hwcfg(struct device *dev) +{ + struct fwnode_handle *endpoint; + struct v4l2_fwnode_endpoint ep_cfg = { + .bus_type = V4L2_MBUS_CSI2_DPHY + }; + int ret; + + endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL); + if (!endpoint) { + dev_err(dev, "endpoint node not found\n"); + return -EINVAL; + } + + ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg); + fwnode_handle_put(endpoint); + if (ret) + return ret; + + /* Check the number of MIPI CSI2 data lanes */ + if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) { + dev_err(dev, "only 2 data lanes are currently supported\n"); + ret = -EINVAL; + goto out; + } + + /* Check the link frequency set in device tree */ + if (!ep_cfg.nr_of_link_frequencies) { + dev_err(dev, "link-frequency property not found in DT\n"); + ret = -EINVAL; + goto out; + } + + if (ep_cfg.nr_of_link_frequencies != 3 || + ep_cfg.link_frequencies[0] != GC2145_640_480_LINKFREQ || + ep_cfg.link_frequencies[1] != GC2145_1280_720_LINKFREQ || + ep_cfg.link_frequencies[2] != GC2145_1600_1200_LINKFREQ) { + dev_err(dev, "Invalid link-frequencies provided\n"); + ret = -EINVAL; + } + +out: + v4l2_fwnode_endpoint_free(&ep_cfg); + + return ret; +} + +static int gc2145_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + unsigned int xclk_freq; + struct gc2145 *gc2145; + int ret; + + gc2145 = devm_kzalloc(&client->dev, sizeof(*gc2145), GFP_KERNEL); + if (!gc2145) + return -ENOMEM; + + v4l2_i2c_subdev_init(&gc2145->sd, client, &gc2145_subdev_ops); + + /* Check the hardware configuration in device tree */ + if (gc2145_check_hwcfg(dev)) + return -EINVAL; + + /* Get system clock (xclk) */ + gc2145->xclk = devm_clk_get(dev, NULL); + if (IS_ERR(gc2145->xclk)) + return dev_err_probe(dev, PTR_ERR(gc2145->xclk), + "failed to get xclk\n"); + + xclk_freq = clk_get_rate(gc2145->xclk); + if (xclk_freq != GC2145_XCLK_FREQ) { + dev_err(dev, "xclk frequency not supported: %d Hz\n", + xclk_freq); + return -EINVAL; + } + + ret = gc2145_get_regulators(gc2145); + if (ret) + return dev_err_probe(dev, ret, + "failed to get regulators\n"); + + /* Request optional reset pin */ + gc2145->reset_gpio = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(gc2145->reset_gpio)) + return dev_err_probe(dev, PTR_ERR(gc2145->reset_gpio), + "failed to get reset_gpio\n"); + + /* Request optional powerdown pin */ + gc2145->powerdown_gpio = devm_gpiod_get_optional(dev, "powerdown", + GPIOD_OUT_HIGH); + if (IS_ERR(gc2145->powerdown_gpio)) + return dev_err_probe(dev, PTR_ERR(gc2145->powerdown_gpio), + "failed to get powerdown_gpio\n"); + + /* Initialise the regmap for further cci access */ + gc2145->regmap = devm_cci_regmap_init_i2c(client, 8); + if (IS_ERR(gc2145->regmap)) + return dev_err_probe(dev, PTR_ERR(gc2145->regmap), + "failed to get cci regmap\n"); + + /* + * The sensor must be powered for gc2145_identify_module() + * to be able to read the CHIP_ID register + */ + ret = gc2145_power_on(dev); + if (ret) + return ret; + + ret = gc2145_identify_module(gc2145); + if (ret) + goto error_power_off; + + /* Set default mode */ + gc2145->mode = &supported_modes[0]; + + ret = gc2145_init_controls(gc2145); + if (ret) + goto error_power_off; + + /* Initialize subdev */ + gc2145->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | + V4L2_SUBDEV_FL_HAS_EVENTS; + gc2145->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; + + /* Initialize source pad */ + gc2145->pad.flags = MEDIA_PAD_FL_SOURCE; + + ret = media_entity_pads_init(&gc2145->sd.entity, 1, &gc2145->pad); + if (ret) { + dev_err(dev, "failed to init entity pads: %d\n", ret); + goto error_handler_free; + } + + gc2145->sd.state_lock = gc2145->ctrls.handler.lock; + ret = v4l2_subdev_init_finalize(&gc2145->sd); + if (ret < 0) { + dev_err(dev, "subdev init error: %d\n", ret); + goto error_media_entity; + } + + /* Enable runtime PM and turn off the device */ + pm_runtime_set_active(dev); + pm_runtime_get_noresume(&client->dev); + pm_runtime_enable(dev); + + pm_runtime_set_autosuspend_delay(&client->dev, 1000); + pm_runtime_use_autosuspend(&client->dev); + pm_runtime_put_autosuspend(&client->dev); + + ret = v4l2_async_register_subdev_sensor(&gc2145->sd); + if (ret < 0) { + dev_err(dev, "failed to register sensor sub-device: %d\n", ret); + goto error_subdev_cleanup; + } + + return 0; + +error_subdev_cleanup: + v4l2_subdev_cleanup(&gc2145->sd); + pm_runtime_disable(&client->dev); + pm_runtime_set_suspended(&client->dev); + +error_media_entity: + media_entity_cleanup(&gc2145->sd.entity); + +error_handler_free: + v4l2_ctrl_handler_free(&gc2145->ctrls.handler); + +error_power_off: + gc2145_power_off(dev); + + return ret; +} + +static void gc2145_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct gc2145 *gc2145 = to_gc2145(sd); + + v4l2_subdev_cleanup(sd); + v4l2_async_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); + v4l2_ctrl_handler_free(&gc2145->ctrls.handler); + + pm_runtime_disable(&client->dev); + if (!pm_runtime_status_suspended(&client->dev)) + gc2145_power_off(&client->dev); + pm_runtime_set_suspended(&client->dev); +} + +static const struct of_device_id gc2145_dt_ids[] = { + { .compatible = "galaxycore,gc2145" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, gc2145_dt_ids); + +static const struct dev_pm_ops gc2145_pm_ops = { + RUNTIME_PM_OPS(gc2145_power_off, gc2145_power_on, NULL) +}; + +static struct i2c_driver gc2145_i2c_driver = { + .driver = { + .name = "gc2145", + .of_match_table = gc2145_dt_ids, + .pm = pm_ptr(&gc2145_pm_ops), + }, + .probe = gc2145_probe, + .remove = gc2145_remove, +}; + +module_i2c_driver(gc2145_i2c_driver); + +MODULE_AUTHOR("Alain Volmat <alain.volmat@xxxxxxxxxxx>"); +MODULE_DESCRIPTION("GalaxyCore GC2145 sensor driver"); +MODULE_LICENSE("GPL"); -- 2.25.1
