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Message-ID: <20231107081345.3172392-4-alain.volmat@foss.st.com>
Date: Tue, 7 Nov 2023 09:13:40 +0100
From: Alain Volmat <alain.volmat@...s.st.com>
To: Alain Volmat <alain.volmat@...s.st.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>
CC: Sakari Ailus <sakari.ailus@...ux.intel.com>,
Jacopo Mondi <jacopo.mondi@...asonboard.com>,
Kieran Bingham <kieran.bingham@...asonboard.com>,
Rob Herring <robh@...nel.org>, <linux-media@...r.kernel.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 3/3] media: i2c: gc2145: Galaxy Core GC2145 sensor support
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 is currently based on initialization scripts
coming from Galaxy Core and for that purpose only 3 static
resolutions are supported.
- 640x480
- 1280x720
- 1600x1200
Signed-off-by: Alain Volmat <alain.volmat@...s.st.com>
---
MAINTAINERS | 8 +
drivers/media/i2c/Kconfig | 10 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/gc2145.c | 1404 ++++++++++++++++++++++++++++++++++++
4 files changed, 1423 insertions(+)
create mode 100644 drivers/media/i2c/gc2145.c
diff --git a/MAINTAINERS b/MAINTAINERS
index ee563a644300..9c72fa65b8ca 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -8617,6 +8617,14 @@ F: kernel/futex/*
F: tools/perf/bench/futex*
F: tools/testing/selftests/futex/
+GALAXYCORE GC2145 SENSOR DRIVER
+M: Alain Volmat <alain.volmat@...s.st.com>
+L: linux-media@...r.kernel.org
+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@...eworks.com>
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..b9c43b04cee9
--- /dev/null
+++ b/drivers/media/i2c/gc2145.c
@@ -0,0 +1,1404 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * A V4L2 driver for Galaxycore GC2145 camera.
+ * Copyright (C) 2023, STMicroelectronics SA
+ *
+ * Inspired from the imx219.c driver
+ */
+
+#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 pixel)
+ * @height: frame height (in pixel)
+ * @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
+ */
+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;
+};
+
+#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 (60 * HZ_PER_MHZ)
+#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 (96 * HZ_PER_MHZ)
+#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 (72 * HZ_PER_MHZ)
+#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},
+};
+
+/* 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,
+ },
+ {
+ /* 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,
+ },
+ {
+ /* 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,
+ },
+};
+
+/**
+ * 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 *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_get_pad_format(sd, state, 0);
+ gc2145_update_pad_format(gc2145, &supported_modes[0], format,
+ MEDIA_BUS_FMT_RGB565_1X16);
+
+ /* Initialize crop rectangle. */
+ crop = v4l2_subdev_get_pad_crop(sd, 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_get_pad_crop(sd, 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_get_pad_format(sd, 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 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_get_pad_crop(sd, 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_get_pad_format(&gc2145->sd, 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_1280_720_PIXELRATE, 1,
+ supported_modes[0].pixel_rate);
+
+ 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 = -EINVAL;
+
+ 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;
+ }
+
+ 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@...s.st.com");
+MODULE_DESCRIPTION("GalaxyCore GC2145 sensor driver");
+MODULE_LICENSE("GPL");
--
2.25.1
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