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Message-Id: <20200414200151.80089-4-daniel@qtec.com>
Date: Tue, 14 Apr 2020 22:01:51 +0200
From: Daniel Gomez <daniel@...c.com>
To: mchehab@...nel.org, hverkuil-cisco@...all.nl,
linux-media@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Daniel Gomez <daniel@...c.com>
Subject: [RFC PATCH 3/3] media: imx378: Add imx378 camera sensor driver
Add a V4L2 sub-device driver for the Sony IMX378 image sensor.
This is a camera sensor using the I2C bus for control and the
CSI-2 bus for data.
Signed-off-by: Daniel Gomez <daniel@...c.com>
---
drivers/media/i2c/Kconfig | 11 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/imx378.c | 1829 ++++++++++++++++++++++++++++++++++++
3 files changed, 1841 insertions(+)
create mode 100644 drivers/media/i2c/imx378.c
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index efd12bf4f8eb..8ea630275faf 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -796,6 +796,17 @@ config VIDEO_IMX355
To compile this driver as a module, choose M here: the
module will be called imx355.
+config VIDEO_IMX378
+ tristate "Sony IMX378 sensor support"
+ depends on GPIOLIB && I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+ depends on V4L2_FWNODE
+ help
+ This is a Video4Linux2 sensor driver for the Sony
+ IMX378 camera.
+
+ To compile this driver as a module, choose M here: the
+ module will be called imx378.
+
config VIDEO_OV2640
tristate "OmniVision OV2640 sensor support"
depends on VIDEO_V4L2 && I2C
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 77bf7d0b691f..dff1c9ec444f 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -117,6 +117,7 @@ obj-$(CONFIG_VIDEO_IMX274) += imx274.o
obj-$(CONFIG_VIDEO_IMX290) += imx290.o
obj-$(CONFIG_VIDEO_IMX319) += imx319.o
obj-$(CONFIG_VIDEO_IMX355) += imx355.o
+obj-$(CONFIG_VIDEO_IMX378) += imx378.o
obj-$(CONFIG_VIDEO_ST_MIPID02) += st-mipid02.o
obj-$(CONFIG_SDR_MAX2175) += max2175.o
diff --git a/drivers/media/i2c/imx378.c b/drivers/media/i2c/imx378.c
new file mode 100644
index 000000000000..6e22c3b45f72
--- /dev/null
+++ b/drivers/media/i2c/imx378.c
@@ -0,0 +1,1829 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * imx378.c - imx378 sensor driver
+ *
+ * Copyright 2019 Qtechnology A/S
+ *
+ * Daniel Gomez <daniel@...c.com>
+ *
+ * Based on imx214.c and imx355.c
+ */
+#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/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <media/media-entity.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-fwnode.h>
+#include <media/v4l2-subdev.h>
+
+#define IMX378_DEFAULT_CLK_FREQ 24000000
+#define IMX378_DEFAULT_LINK_FREQ 480000000
+#define IMX378_DEFAULT_LINK_MFREQ (IMX378_DEFAULT_LINK_FREQ / 1000000)
+#define IMX378_DEFAULT_PIXEL_RATE ((IMX378_DEFAULT_LINK_FREQ * 8LL) / 10)
+#define IMX378_DEFAULT_MBUS_CODE MEDIA_BUS_FMT_SRGGB10_1X10
+#define IMX378_DEFAULT_FIVAL {1, 30}
+#define IMX378_LINE_LENGTH 4444
+#define IMX378_MIN_WIDTH 4
+#define IMX378_MIN_HEIGHT 4
+#define IMX378_MAX_DEFAULT_WIDTH 4032
+#define IMX378_MAX_DEFAULT_HEIGHT 3040
+#define IMX378_MAX_BOUNDS_WIDTH 4032
+#define IMX378_MAX_BOUNDS_HEIGHT 3104
+#define IMX378_CID_CUSTOM_BASE (V4L2_CID_USER_BASE | 0xf000)
+#define IMX378_CID_GREEN_BALANCE (IMX378_CID_CUSTOM_BASE + 0)
+
+static const char * const imx378_supply_name[] = {
+ "vdda",
+ "vddd",
+ "vdddo",
+};
+
+#define IMX378_NUM_SUPPLIES ARRAY_SIZE(imx378_supply_name)
+
+struct imx378 {
+ struct device *dev;
+ struct clk *xclk;
+ struct regmap *regmap;
+
+ struct v4l2_subdev sd;
+ struct media_pad pad;
+ struct v4l2_mbus_framefmt fmt;
+ struct v4l2_rect crop;
+
+ struct v4l2_ctrl_handler ctrls;
+ struct v4l2_ctrl *pixel_rate;
+ struct v4l2_ctrl *link_freq;
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *vflip;
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *analogue_gain;
+ struct v4l2_ctrl *digital_gain;
+ struct v4l2_ctrl *red_balance;
+ struct v4l2_ctrl *blue_balance;
+ struct v4l2_ctrl *green_balance;
+ struct v4l2_ctrl *temperature;
+
+ struct regulator_bulk_data supplies[IMX378_NUM_SUPPLIES];
+
+ struct gpio_desc *enable_gpio;
+
+ struct mutex mutex;
+
+ struct v4l2_fract fival;
+
+ bool streaming;
+};
+
+struct reg_8 {
+ u16 addr;
+ u8 val;
+};
+
+enum {
+ IMX378_TABLE_WAIT_MS = 0,
+ IMX378_TABLE_END,
+ IMX378_MAX_RETRIES,
+ IMX378_WAIT_MS
+};
+
+static const struct reg_8 mode_table_common[] = {
+ /* software standby settings */
+ {0x0100, 0x00},
+
+ /* software reset */
+ {0x0103, 0x01},
+
+ /* CSI */
+ {0x0112, 0x0A},
+ {0x0113, 0x0A},
+ {0x0114, 0x03},
+
+ /* global settings */
+ {0x0136, 0x18},
+ {0x0137, 0x00},
+
+ {0x0202, 0x20},
+ {0x0203, 0xa0},
+ {0x0204, 0x03},
+ {0x0205, 0xd2},
+ {0x020e, 0x01},
+ {0x020f, 0x00},
+ {0x0210, 0x02},
+ {0x0211, 0x21},
+ {0x0212, 0x01},
+ {0x0213, 0xee},
+ {0x0214, 0x01},
+ {0x0215, 0x00},
+ {0x0220, 0x00},
+ {0x0221, 0x11},
+
+ {0x0301, 0x05},
+ {0x0303, 0x02},
+ {0x0305, 0x03},
+ {0x0306, 0x00},
+ {0x0307, 0x96},
+
+ {0x0309, 0x0a},
+ {0x030b, 0x01},
+ {0x030d, 0x02},
+ {0x030e, 0x00},
+ {0x030f, 0xf6},
+ {0x0310, 0x00},
+ {0x0340, 0x04},
+ {0x0341, 0xb0},
+ {0x0342, 0x20},
+ {0x0343, 0x08},
+ {0x0344, 0x00},
+ {0x0345, 0x00},
+ {0x0346, 0x01},
+ {0x0347, 0x78},
+ {0x0348, 0x0f},
+ {0x0349, 0xd7},
+ {0x0350, 0x01},
+ {0x034a, 0x0a},
+ {0x034b, 0x67},
+ {0x034c, 0x07},
+ {0x034d, 0x80},
+ {0x034e, 0x04},
+ {0x034f, 0x38},
+ {0x0381, 0x01},
+ {0x0383, 0x01},
+ {0x0385, 0x01},
+ {0x0387, 0x01},
+
+ {0x0401, 0x00},
+ {0x0404, 0x00},
+ {0x0405, 0x10},
+ {0x0408, 0x00},
+ {0x0409, 0x6c},
+ {0x040a, 0x00},
+ {0x040b, 0x40},
+ {0x040c, 0x07},
+ {0x040d, 0x80},
+ {0x040e, 0x04},
+ {0x040f, 0x38},
+
+ {0x0900, 0x00},
+ {0x0901, 0x11},
+ {0x0902, 0x02},
+
+ {0x0c1a, 0x01},
+ {0x0c1b, 0x01},
+
+ {0x3030, 0x01},
+ {0x3032, 0x00},
+ {0x3033, 0x40},
+ {0x3140, 0x02},
+ {0x38a8, 0x1f},
+ {0x38a9, 0xff},
+ {0x38aa, 0x1f},
+ {0x38ab, 0xff},
+ {0x3c00, 0x00},
+ {0x3c01, 0x03},
+ {0x3c02, 0xdc},
+ {0x3d8a, 0x01},
+ {0x3e20, 0x01},
+ {0x3e37, 0x01},
+ {0x3f0d, 0x00},
+ {0x3f50, 0x00},
+ {0x3f56, 0x00},
+ {0x3f57, 0x01},
+ {0x3ff9, 0x00},
+
+ {0x4421, 0x08},
+ {0x4ae9, 0x18},
+ {0x4ae9, 0x21},
+ {0x4aea, 0x08},
+ {0x4aea, 0x80},
+
+ {0x55d4, 0x00},
+ {0x55d5, 0x00},
+ {0x55d6, 0x07},
+ {0x55d7, 0xff},
+ {0x55e8, 0x07},
+ {0x55e9, 0xff},
+ {0x55ea, 0x00},
+ {0x55eb, 0x00},
+ {0x5748, 0x07},
+ {0x5749, 0xff},
+ {0x574a, 0x00},
+ {0x574b, 0x00},
+ {0x574c, 0x07},
+ {0x574d, 0xff},
+ {0x574e, 0x00},
+ {0x574f, 0x00},
+ {0x5754, 0x00},
+ {0x5755, 0x00},
+ {0x5756, 0x07},
+ {0x5757, 0xff},
+ {0x5973, 0x04},
+ {0x5974, 0x01},
+ {0x5d13, 0xc3},
+ {0x5d14, 0x58},
+ {0x5d15, 0xa3},
+ {0x5d16, 0x1d},
+ {0x5d17, 0x65},
+ {0x5d18, 0x8c},
+ {0x5d1a, 0x06},
+ {0x5d1b, 0xa9},
+ {0x5d1c, 0x45},
+ {0x5d1d, 0x3a},
+ {0x5d1e, 0xab},
+ {0x5d1f, 0x15},
+ {0x5d21, 0x0e},
+ {0x5d22, 0x52},
+ {0x5d23, 0xaa},
+ {0x5d24, 0x7d},
+ {0x5d25, 0x57},
+ {0x5d26, 0xa8},
+ {0x5d37, 0x5a},
+ {0x5d38, 0x5a},
+ {0x5d77, 0x7f},
+
+ {0x7b3b, 0x01},
+ {0x7b4c, 0x00},
+ {0x7b53, 0x01},
+ {0x7b75, 0x0e},
+ {0x7b76, 0x0b},
+ {0x7b77, 0x08},
+ {0x7b78, 0x0a},
+ {0x7b79, 0x47},
+ {0x7b7c, 0x00},
+ {0x7b7d, 0x00},
+
+ {0x8d1f, 0x00},
+ {0x8d27, 0x00},
+
+ {0x9004, 0x03},
+ {0x9200, 0x50},
+ {0x9201, 0x6c},
+ {0x9202, 0x71},
+ {0x9203, 0x00},
+ {0x9204, 0x71},
+ {0x9205, 0x01},
+ {0x9304, 0x03},
+ {0x9305, 0x00},
+ {0x9369, 0x5a},
+ {0x936b, 0x55},
+ {0x936d, 0x28},
+ {0x9371, 0x6a},
+ {0x9373, 0x6a},
+ {0x9375, 0x64},
+ {0x9905, 0x00},
+ {0x9907, 0x00},
+ {0x9909, 0x00},
+ {0x990b, 0x00},
+ {0x991a, 0x00},
+ {0x9944, 0x3c},
+ {0x9947, 0x3c},
+ {0x994a, 0x8c},
+ {0x994b, 0x50},
+ {0x994c, 0x1b},
+ {0x994d, 0x8c},
+ {0x994e, 0x50},
+ {0x994f, 0x1b},
+ {0x9950, 0x8c},
+ {0x9951, 0x1b},
+ {0x9952, 0x0a},
+ {0x9953, 0x8c},
+ {0x9954, 0x1b},
+ {0x9955, 0x0a},
+ {0x996b, 0x8c},
+ {0x996c, 0x64},
+ {0x996d, 0x50},
+ {0x9a13, 0x04},
+ {0x9a14, 0x04},
+ {0x9a19, 0x00},
+ {0x9a1c, 0x04},
+ {0x9a1d, 0x04},
+ {0x9a26, 0x05},
+ {0x9a27, 0x05},
+ {0x9a2c, 0x01},
+ {0x9a2d, 0x03},
+ {0x9a2f, 0x05},
+ {0x9a30, 0x05},
+ {0x9a41, 0x00},
+ {0x9a46, 0x00},
+ {0x9a47, 0x00},
+ {0x9a4c, 0x0d},
+ {0x9a4d, 0x0d},
+ {0x9c17, 0x35},
+ {0x9c1d, 0x31},
+ {0x9c29, 0x50},
+ {0x9c3b, 0x2f},
+ {0x9c41, 0x6b},
+ {0x9c47, 0x2d},
+ {0x9c4d, 0x40},
+ {0x9c6b, 0x00},
+ {0x9c71, 0xc8},
+ {0x9c73, 0x32},
+ {0x9c75, 0x04},
+ {0x9c7d, 0x2d},
+ {0x9c83, 0x40},
+ {0x9c94, 0x3f},
+ {0x9c95, 0x3f},
+ {0x9c96, 0x3f},
+ {0x9c97, 0x00},
+ {0x9c98, 0x00},
+ {0x9c99, 0x00},
+ {0x9c9a, 0x3f},
+ {0x9c9b, 0x3f},
+ {0x9c9c, 0x3f},
+ {0x9ca0, 0x0f},
+ {0x9ca1, 0x0f},
+ {0x9ca2, 0x0f},
+ {0x9ca3, 0x00},
+ {0x9ca4, 0x00},
+ {0x9ca5, 0x00},
+ {0x9ca6, 0x1e},
+ {0x9ca7, 0x1e},
+ {0x9ca8, 0x1e},
+ {0x9ca9, 0x00},
+ {0x9caa, 0x00},
+ {0x9cab, 0x00},
+ {0x9cac, 0x09},
+ {0x9cad, 0x09},
+ {0x9cae, 0x09},
+ {0x9cbd, 0x50},
+ {0x9cbf, 0x50},
+ {0x9cc1, 0x50},
+ {0x9cc3, 0x40},
+ {0x9cc5, 0x40},
+ {0x9cc7, 0x40},
+ {0x9cc9, 0x0a},
+ {0x9ccb, 0x0a},
+ {0x9ccd, 0x0a},
+ {0x9d17, 0x35},
+ {0x9d1d, 0x31},
+ {0x9d29, 0x50},
+ {0x9d3b, 0x2f},
+ {0x9d41, 0x6b},
+ {0x9d47, 0x42},
+ {0x9d4d, 0x5a},
+ {0x9d6b, 0x00},
+ {0x9d71, 0xc8},
+ {0x9d73, 0x32},
+ {0x9d75, 0x04},
+ {0x9d7d, 0x42},
+ {0x9d83, 0x5a},
+ {0x9d94, 0x3f},
+ {0x9d95, 0x3f},
+ {0x9d96, 0x3f},
+ {0x9d97, 0x00},
+ {0x9d98, 0x00},
+ {0x9d99, 0x00},
+ {0x9d9a, 0x3f},
+ {0x9d9b, 0x3f},
+ {0x9d9c, 0x3f},
+ {0x9d9d, 0x1f},
+ {0x9d9e, 0x1f},
+ {0x9d9f, 0x1f},
+ {0x9da0, 0x0f},
+ {0x9da1, 0x0f},
+ {0x9da2, 0x0f},
+ {0x9da3, 0x00},
+ {0x9da4, 0x00},
+ {0x9da5, 0x00},
+ {0x9da6, 0x1e},
+ {0x9da7, 0x1e},
+ {0x9da8, 0x1e},
+ {0x9da9, 0x00},
+ {0x9daa, 0x00},
+ {0x9dab, 0x00},
+ {0x9dac, 0x09},
+ {0x9dad, 0x09},
+ {0x9dae, 0x09},
+ {0x9dc9, 0x0a},
+ {0x9dcb, 0x0a},
+ {0x9dcd, 0x0a},
+ {0x9e17, 0x35},
+ {0x9e1d, 0x31},
+ {0x9e29, 0x50},
+ {0x9e3b, 0x2f},
+ {0x9e41, 0x6b},
+ {0x9e47, 0x2d},
+ {0x9e4d, 0x40},
+ {0x9e6b, 0x00},
+ {0x9e71, 0xc8},
+ {0x9e73, 0x32},
+ {0x9e75, 0x04},
+ {0x9e94, 0x0f},
+ {0x9e95, 0x0f},
+ {0x9e96, 0x0f},
+ {0x9e97, 0x00},
+ {0x9e98, 0x00},
+ {0x9e99, 0x00},
+ {0x9e9a, 0x2f},
+ {0x9e9b, 0x2f},
+ {0x9e9c, 0x2f},
+ {0x9e9d, 0x00},
+ {0x9e9e, 0x00},
+ {0x9e9f, 0x00},
+ {0x9ea0, 0x0f},
+ {0x9ea1, 0x0f},
+ {0x9ea2, 0x0f},
+ {0x9ea3, 0x00},
+ {0x9ea4, 0x00},
+ {0x9ea5, 0x00},
+ {0x9ea6, 0x3f},
+ {0x9ea7, 0x3f},
+ {0x9ea8, 0x3f},
+ {0x9ea9, 0x00},
+ {0x9eaa, 0x00},
+ {0x9eab, 0x00},
+ {0x9eac, 0x09},
+ {0x9ead, 0x09},
+ {0x9eae, 0x09},
+ {0x9ec9, 0x0a},
+ {0x9ecb, 0x0a},
+ {0x9ecd, 0x0a},
+ {0x9f17, 0x35},
+ {0x9f1d, 0x31},
+ {0x9f29, 0x50},
+ {0x9f3b, 0x2f},
+ {0x9f41, 0x6b},
+ {0x9f47, 0x42},
+ {0x9f4d, 0x5a},
+ {0x9f6b, 0x00},
+ {0x9f71, 0xc8},
+ {0x9f73, 0x32},
+ {0x9f75, 0x04},
+ {0x9f94, 0x0f},
+ {0x9f95, 0x0f},
+ {0x9f96, 0x0f},
+ {0x9f97, 0x00},
+ {0x9f98, 0x00},
+ {0x9f99, 0x00},
+ {0x9f9a, 0x2f},
+ {0x9f9b, 0x2f},
+ {0x9f9c, 0x2f},
+ {0x9f9d, 0x00},
+ {0x9f9e, 0x00},
+ {0x9f9f, 0x00},
+ {0x9fa0, 0x0f},
+ {0x9fa1, 0x0f},
+ {0x9fa2, 0x0f},
+ {0x9fa3, 0x00},
+ {0x9fa4, 0x00},
+ {0x9fa5, 0x00},
+ {0x9fa6, 0x1e},
+ {0x9fa7, 0x1e},
+ {0x9fa8, 0x1e},
+ {0x9fa9, 0x00},
+ {0x9faa, 0x00},
+ {0x9fab, 0x00},
+ {0x9fac, 0x09},
+ {0x9fad, 0x09},
+ {0x9fae, 0x09},
+ {0x9fc9, 0x0a},
+ {0x9fcb, 0x0a},
+ {0x9fcd, 0x0a},
+
+ {0xa001, 0x0a},
+ {0xa003, 0x0a},
+ {0xa005, 0x0a},
+ {0xa006, 0x01},
+ {0xa007, 0xc0},
+ {0xa009, 0xc0},
+ {0xa14b, 0xff},
+ {0xa151, 0x0c},
+ {0xa153, 0x50},
+ {0xa155, 0x02},
+ {0xa157, 0x00},
+ {0xa1ad, 0xff},
+ {0xa1b3, 0x0c},
+ {0xa1b5, 0x50},
+ {0xa1b9, 0x00},
+ {0xa24b, 0xff},
+ {0xa257, 0x00},
+ {0xa2a9, 0x60},
+ {0xa2ad, 0xff},
+ {0xa2b7, 0x00},
+ {0xa2b9, 0x00},
+
+ {0xb21f, 0x04},
+ {0xb35c, 0x00},
+ {0xb35e, 0x08},
+ {0xbcf1, 0x02},
+ {0xe000, 0x00},
+ {0xf61c, 0x04},
+ {0xf61e, 0x04},
+
+ {IMX378_TABLE_END, 0x00}
+};
+
+static inline struct imx378 *to_imx378(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct imx378, sd);
+}
+
+static int imx378_set_flip_mode(struct imx378 *imx378, u32 code)
+{
+ /* WORKAROUND to update controls */
+ imx378->vflip->flags &= ~V4L2_CTRL_FLAG_READ_ONLY;
+ imx378->hflip->flags &= ~V4L2_CTRL_FLAG_READ_ONLY;
+
+ switch (code) {
+ case MEDIA_BUS_FMT_SBGGR10_1X10:
+ v4l2_ctrl_s_ctrl(imx378->vflip, 1);
+ v4l2_ctrl_s_ctrl(imx378->hflip, 1);
+ break;
+ case MEDIA_BUS_FMT_SGBRG10_1X10:
+ v4l2_ctrl_s_ctrl(imx378->vflip, 1);
+ v4l2_ctrl_s_ctrl(imx378->hflip, 0);
+ break;
+ case MEDIA_BUS_FMT_SGRBG10_1X10:
+ v4l2_ctrl_s_ctrl(imx378->vflip, 0);
+ v4l2_ctrl_s_ctrl(imx378->hflip, 1);
+ break;
+ case MEDIA_BUS_FMT_SRGGB10_1X10:
+ v4l2_ctrl_s_ctrl(imx378->vflip, 0);
+ v4l2_ctrl_s_ctrl(imx378->hflip, 0);
+ break;
+ default:
+ break;
+ }
+
+ /* WORKAROUND to update controls */
+ imx378->vflip->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+ imx378->hflip->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+ return 0;
+}
+
+static u32 imx378_get_format_code(struct imx378 *imx378)
+{
+ /*
+ * Only one bayer order is supported.
+ * It depends on the flip settings.
+ */
+ u32 code;
+ static const u32 codes[2][2] = {
+ { MEDIA_BUS_FMT_SRGGB10_1X10, MEDIA_BUS_FMT_SGRBG10_1X10, },
+ { MEDIA_BUS_FMT_SGBRG10_1X10, MEDIA_BUS_FMT_SBGGR10_1X10, },
+ };
+
+ lockdep_assert_held(&imx378->mutex);
+ code = codes[imx378->vflip->val][imx378->hflip->val];
+
+ return code;
+}
+
+static int imx378_read_reg16(struct imx378 *imx378, u16 addr, u16 *val)
+{
+ int ret;
+ u32 h_val = 0, l_val = 0;
+
+ ret = regmap_read(imx378->regmap, addr + 1, &l_val);
+ if (ret) {
+ pr_err("%s:i2c read failed, %x\n", __func__, addr + 1);
+ return ret;
+ }
+
+ *val = l_val & 0xFF;
+
+ ret = regmap_read(imx378->regmap, addr, &h_val);
+ if (ret) {
+ pr_err("%s:i2c read failed, %x\n", __func__, addr);
+ return ret;
+ }
+
+ *val |= (h_val & 0xFF) << 8;
+
+ return ret;
+}
+
+static int imx378_write_reg16(struct imx378 *imx378, u16 addr, u16 val)
+{
+ int ret;
+
+ ret = regmap_write(imx378->regmap, addr + 1, val);
+ if (ret) {
+ pr_err("%s:i2c write failed, %x = %x\n",
+ __func__, addr + 1, val);
+ return ret;
+ }
+
+ ret = regmap_write(imx378->regmap, addr, val >> 8);
+ if (ret) {
+ pr_err("%s:i2c write failed, %x = %x\n",
+ __func__, addr, val >> 8);
+ return ret;
+ }
+
+ return ret;
+}
+
+static int __maybe_unused imx378_power_on(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct imx378 *imx378 = to_imx378(sd);
+ int ret;
+
+ gpiod_set_value_cansleep(imx378->enable_gpio, 0);
+
+ ret = regulator_bulk_enable(IMX378_NUM_SUPPLIES, imx378->supplies);
+ if (ret < 0) {
+ dev_err(imx378->dev, "failed to enable regulators: %d\n", ret);
+ return ret;
+ }
+
+ usleep_range(2000, 3000);
+
+ ret = clk_prepare_enable(imx378->xclk);
+ if (ret < 0) {
+ regulator_bulk_disable(IMX378_NUM_SUPPLIES, imx378->supplies);
+ dev_err(imx378->dev, "clk prepare enable failed\n");
+ return ret;
+ }
+
+ gpiod_set_value_cansleep(imx378->enable_gpio, 1);
+ usleep_range(12000, 15000);
+
+ return 0;
+}
+
+static int __maybe_unused imx378_power_off(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct imx378 *imx378 = to_imx378(sd);
+
+ gpiod_set_value_cansleep(imx378->enable_gpio, 0);
+
+ clk_disable_unprepare(imx378->xclk);
+
+ regulator_bulk_disable(IMX378_NUM_SUPPLIES, imx378->supplies);
+ usleep_range(10, 20);
+
+ return 0;
+}
+
+static int imx378_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ struct imx378 *imx378 = container_of(sd, struct imx378, sd);
+
+ if (code->index != 0 || code->pad != 0)
+ return -EINVAL;
+
+ code->code = imx378_get_format_code(imx378);
+
+ return 0;
+}
+
+static int imx378_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct imx378 *imx378 = container_of(sd, struct imx378, sd);
+
+ if (fse->index != 0)
+ return -EINVAL;
+
+ mutex_lock(&imx378->mutex);
+ if (fse->code != imx378_get_format_code(imx378)) {
+ mutex_unlock(&imx378->mutex);
+ return -EINVAL;
+ }
+ mutex_unlock(&imx378->mutex);
+
+ fse->min_width = IMX378_MIN_WIDTH;
+ fse->max_width = IMX378_MAX_BOUNDS_WIDTH;
+ fse->min_height = IMX378_MIN_HEIGHT;
+ fse->max_height = IMX378_MAX_BOUNDS_HEIGHT;
+
+ return 0;
+}
+
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+static int imx378_s_register(struct v4l2_subdev *sd,
+ const struct v4l2_dbg_register *reg)
+{
+ struct imx378 *imx378 = container_of(sd, struct imx378, sd);
+
+ return regmap_write(imx378->regmap, reg->reg, reg->val);
+}
+
+static int imx378_g_register(struct v4l2_subdev *sd,
+ struct v4l2_dbg_register *reg)
+{
+ struct imx378 *imx378 = container_of(sd, struct imx378, sd);
+ unsigned int aux;
+ int ret;
+
+ reg->size = 1;
+ ret = regmap_read(imx378->regmap, reg->reg, &aux);
+ reg->val = aux;
+
+ return ret;
+}
+#endif
+
+static const struct v4l2_subdev_core_ops imx378_core_ops = {
+#ifdef CONFIG_VIDEO_ADV_DEBUG
+ .g_register = imx378_g_register,
+ .s_register = imx378_s_register,
+#endif
+};
+
+static int imx378_set_img_size(struct imx378 *imx378)
+{
+ u32 frame_length;
+ int ret;
+
+ ret = imx378_write_reg16(imx378, 0x34c, imx378->fmt.width);
+ if (ret < 0)
+ goto error;
+
+ ret = imx378_write_reg16(imx378, 0x34e, imx378->fmt.height);
+ if (ret < 0)
+ goto error;
+
+ ret = imx378_write_reg16(imx378, 0x40c, imx378->fmt.width);
+ if (ret < 0)
+ goto error;
+
+ ret = imx378_write_reg16(imx378, 0x40e, imx378->fmt.height);
+ if (ret < 0)
+ goto error;
+
+ ret = imx378_write_reg16(imx378, 0x342, IMX378_LINE_LENGTH);
+ if (ret < 0)
+ goto error;
+
+ frame_length = IMX378_DEFAULT_LINK_FREQ /
+ ((imx378->fival.denominator / imx378->fival.numerator)
+ * IMX378_LINE_LENGTH);
+
+ ret = imx378_write_reg16(imx378, 0x340, frame_length);
+ if (ret < 0)
+ goto error;
+
+ ret = imx378_write_reg16(imx378, 0x344, imx378->crop.left);
+ if (ret < 0)
+ goto error;
+
+ ret = imx378_write_reg16(imx378, 0x348, imx378->crop.left +
+ imx378->fmt.width - 1);
+ if (ret < 0)
+ goto error;
+
+ ret = imx378_write_reg16(imx378, 0x346, imx378->crop.top);
+ if (ret < 0)
+ goto error;
+
+ ret = imx378_write_reg16(imx378, 0x34a, imx378->crop.top +
+ imx378->fmt.height - 1);
+ if (ret < 0)
+ goto error;
+
+ ret = imx378_write_reg16(imx378, 0x408, 0);
+ if (ret < 0)
+ goto error;
+
+ ret = imx378_write_reg16(imx378, 0x40a, 0);
+ if (ret < 0)
+ goto error;
+
+ ret = regmap_write(imx378->regmap, 0xb04, 1);
+ if (ret < 0)
+ goto error;
+
+ return ret;
+
+error:
+ dev_err(imx378->dev, "could not set image size %d\n", ret);
+ return ret;
+}
+
+static struct v4l2_mbus_framefmt *
+__imx378_get_pad_format(struct imx378 *imx378,
+ struct v4l2_subdev_pad_config *cfg,
+ unsigned int pad,
+ enum v4l2_subdev_format_whence which)
+{
+ switch (which) {
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_format(&imx378->sd, cfg, pad);
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &imx378->fmt;
+ default:
+ return NULL;
+ }
+}
+
+static int imx378_get_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *fmt)
+{
+ struct imx378 *imx378 = to_imx378(sd);
+
+ mutex_lock(&imx378->mutex);
+ fmt->format = *__imx378_get_pad_format(imx378, cfg, fmt->pad,
+ fmt->which);
+ mutex_unlock(&imx378->mutex);
+
+ return 0;
+}
+
+static struct v4l2_rect *
+__imx378_get_pad_crop(struct imx378 *imx378, struct v4l2_subdev_pad_config *cfg,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ switch (which) {
+ case V4L2_SUBDEV_FORMAT_TRY:
+ return v4l2_subdev_get_try_crop(&imx378->sd, cfg, pad);
+ case V4L2_SUBDEV_FORMAT_ACTIVE:
+ return &imx378->crop;
+ default:
+ return NULL;
+ }
+}
+
+static int imx378_min_interval(struct imx378 *imx378,
+ struct v4l2_fract *fival)
+{
+ fival->numerator = IMX378_LINE_LENGTH * (imx378->fmt.height);
+ fival->denominator = IMX378_DEFAULT_LINK_FREQ;
+
+ return 0;
+}
+
+static int imx378_max_interval(struct v4l2_fract *fival)
+{
+ fival->numerator = IMX378_LINE_LENGTH * 0xffff;
+ fival->denominator = IMX378_DEFAULT_LINK_FREQ;
+
+ return 0;
+}
+
+#define FRACT_CMP(a, OP, b) \
+ ((u64)(a).numerator * (b).denominator OP \
+ (u64)(b).numerator * (a).denominator)
+static int imx378_clamp_interval(struct imx378 *imx378,
+ struct v4l2_fract *fival)
+{
+ struct v4l2_fract interval;
+ int ret;
+
+ ret = imx378_min_interval(imx378, &interval);
+ if (ret)
+ return ret;
+ if (FRACT_CMP(*fival, <, interval))
+ *fival = interval;
+
+ ret = imx378_max_interval(&interval);
+ if (ret)
+ return ret;
+ if (FRACT_CMP(*fival, >, interval))
+ *fival = interval;
+
+ return 0;
+}
+
+static int imx378_g_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fival)
+{
+ struct imx378 *imx378 = to_imx378(sd);
+
+ fival->interval = imx378->fival;
+
+ return 0;
+}
+
+static int imx378_s_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fival)
+{
+ struct imx378 *imx378 = to_imx378(sd);
+ u64 max_exposure;
+
+ if (fival->interval.denominator == 0)
+ fival->interval = (struct v4l2_fract) IMX378_DEFAULT_FIVAL;
+
+ imx378_clamp_interval(imx378, &fival->interval);
+
+ imx378->fival = fival->interval;
+
+ /* Update exposure limits */
+ max_exposure = (IMX378_DEFAULT_LINK_FREQ /
+ ((imx378->fival.denominator / imx378->fival.numerator)
+ * IMX378_LINE_LENGTH)) - 20;
+
+ __v4l2_ctrl_modify_range(imx378->exposure, imx378->exposure->minimum,
+ max_exposure, imx378->exposure->step,
+ max_exposure);
+
+ return 0;
+}
+
+static int
+imx378_enum_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_frame_interval_enum *fie)
+{
+ struct imx378 *imx378 = to_imx378(sd);
+ int ret;
+
+ if (fie->index != 0)
+ return -EINVAL;
+
+ if (fie->width > IMX378_MAX_BOUNDS_WIDTH ||
+ fie->width < IMX378_MIN_WIDTH)
+ return -EINVAL;
+
+ if (fie->height > IMX378_MAX_BOUNDS_HEIGHT ||
+ fie->height < IMX378_MIN_HEIGHT)
+ return -EINVAL;
+
+ mutex_lock(&imx378->mutex);
+ if (fie->code != imx378_get_format_code(imx378)) {
+ mutex_unlock(&imx378->mutex);
+ return -EINVAL;
+ }
+ mutex_unlock(&imx378->mutex);
+
+ ret = imx378_min_interval(imx378, &fie->min_interval);
+ if (ret)
+ return ret;
+
+ ret = imx378_max_interval(&fie->max_interval);
+ if (ret)
+ return ret;
+
+ fie->interval = (struct v4l2_fract) IMX378_DEFAULT_FIVAL;
+
+ return 0;
+}
+
+static int imx378_set_fmt(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_format *fmt)
+{
+ struct imx378 *imx378 = to_imx378(sd);
+ struct v4l2_mbus_framefmt *__fmt;
+ struct v4l2_rect *__crop;
+ struct v4l2_subdev_frame_interval fival = { };
+
+ mutex_lock(&imx378->mutex);
+
+ if (imx378->streaming && fmt->which != V4L2_SUBDEV_FORMAT_TRY)
+ return -EBUSY;
+
+ __crop = __imx378_get_pad_crop(imx378, cfg, fmt->pad, fmt->which);
+
+ v4l_bound_align_image(&fmt->format.width, IMX378_MIN_WIDTH,
+ IMX378_MAX_BOUNDS_WIDTH, ilog2(4),
+ &fmt->format.height, IMX378_MIN_HEIGHT,
+ IMX378_MAX_BOUNDS_HEIGHT, ilog2(8), 0);
+
+ __crop->width = fmt->format.width;
+ __crop->height = fmt->format.height;
+
+ v4l_bound_align_image(&__crop->left, 0,
+ IMX378_MAX_BOUNDS_WIDTH - __crop->width, ilog2(4),
+ &__crop->top, 0,
+ IMX378_MAX_BOUNDS_HEIGHT - __crop->height,
+ ilog2(8), 0);
+
+ __fmt = __imx378_get_pad_format(imx378, cfg, fmt->pad, fmt->which);
+
+ __fmt->width = __crop->width;
+ __fmt->height = __crop->height;
+
+ if (fmt->format.code && fmt->which != V4L2_SUBDEV_FORMAT_TRY)
+ imx378_set_flip_mode(imx378, fmt->format.code);
+
+ __fmt->code = imx378_get_format_code(imx378);
+
+ __fmt->field = V4L2_FIELD_NONE;
+ __fmt->colorspace = V4L2_COLORSPACE_SRGB;
+ __fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
+ __fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
+ __fmt->colorspace, __fmt->ycbcr_enc);
+ __fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(__fmt->colorspace);
+
+ fmt->format = *__fmt;
+
+ /* Frame interval depends on the format so, update it accordingly */
+ if (fmt->which != V4L2_SUBDEV_FORMAT_TRY) {
+ fival.interval = imx378->fival;
+ imx378_s_frame_interval(sd, &fival);
+ }
+
+ mutex_unlock(&imx378->mutex);
+
+ return 0;
+}
+
+static int imx378_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_selection *s)
+{
+ struct imx378 *imx378 = to_imx378(sd);
+
+ switch (s->target) {
+ case V4L2_SEL_TGT_CROP:
+ case V4L2_SEL_TGT_COMPOSE:
+ s->r = imx378->crop;
+ return 0;
+ case V4L2_SEL_TGT_COMPOSE_DEFAULT:
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ s->r.width = IMX378_MAX_DEFAULT_WIDTH;
+ s->r.height = IMX378_MAX_DEFAULT_HEIGHT;
+ s->r.left = 0;
+ s->r.top = 0;
+ return 0;
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ s->r.width = IMX378_MAX_BOUNDS_WIDTH;
+ s->r.height = IMX378_MAX_BOUNDS_HEIGHT;
+ s->r.left = 0;
+ s->r.top = 0;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int imx378_set_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg,
+ struct v4l2_subdev_selection *s)
+{
+ struct imx378 *imx378 = to_imx378(sd);
+ int ret;
+
+ if (s->target == V4L2_SEL_TGT_COMPOSE)
+ return 0;
+
+ if (s->target != V4L2_SEL_TGT_CROP)
+ return -EINVAL;
+
+ mutex_lock(&imx378->mutex);
+
+ s->r.width = imx378->crop.width;
+ s->r.height = imx378->crop.height;
+
+ v4l_bound_align_image(&s->r.left, 0,
+ IMX378_MAX_BOUNDS_WIDTH - s->r.width, ilog2(4),
+ &s->r.top, 0,
+ IMX378_MAX_BOUNDS_HEIGHT - s->r.height, ilog2(8),
+ 0);
+
+ imx378->crop.left = s->r.left;
+ imx378->crop.top = s->r.top;
+
+ if (imx378->streaming) {
+ ret = imx378_set_img_size(imx378);
+ if (ret < 0) {
+ dev_err(imx378->dev, "could not set image size\n");
+ mutex_unlock(&imx378->mutex);
+ return ret;
+ }
+ }
+
+ mutex_unlock(&imx378->mutex);
+ return 0;
+}
+
+static int imx378_set_exposure(struct imx378 *imx378)
+{
+ int ret;
+
+ /* Set group hold */
+ ret = regmap_write(imx378->regmap, 0x104, 1);
+ if (ret < 0)
+ return ret;
+
+ ret = imx378_write_reg16(imx378, 0x202, imx378->exposure->val);
+ if (ret < 0)
+ return ret;
+
+ /* Release group hold */
+ return regmap_write(imx378->regmap, 0x104, 0);
+}
+
+static int imx378_set_analogue_gain(struct imx378 *imx378)
+{
+ int ret;
+
+ /* Set group hold */
+ ret = regmap_write(imx378->regmap, 0x104, 1);
+ if (ret < 0)
+ return ret;
+
+ ret = imx378_write_reg16(imx378, 0x204, imx378->analogue_gain->val);
+ if (ret < 0)
+ return ret;
+
+ /* Release group hold */
+ return regmap_write(imx378->regmap, 0x104, 0);
+}
+
+static int imx378_set_digital_gain_global(struct imx378 *imx378)
+{
+ int ret;
+
+ /* Set group hold */
+ ret = regmap_write(imx378->regmap, 0x104, 1);
+ if (ret < 0)
+ return ret;
+
+ /* Digital gain control mode all color */
+ ret = regmap_write(imx378->regmap, 0x3ff9, 1);
+ if (ret < 0)
+ return ret;
+
+ /* Set digital gain globally */
+ ret = imx378_write_reg16(imx378, 0x20e, imx378->digital_gain->val);
+ if (ret < 0)
+ return ret;
+
+ /* Release group hold */
+ return regmap_write(imx378->regmap, 0x104, 0);
+}
+
+static int imx378_set_digital_gain_by_color(struct imx378 *imx378)
+{
+ int ret;
+
+ /* Set group hold */
+ ret = regmap_write(imx378->regmap, 0x104, 1);
+ if (ret < 0)
+ return ret;
+
+ /* Digital gain control mode by color */
+ ret = regmap_write(imx378->regmap, 0x3ff9, 0);
+ if (ret < 0)
+ return ret;
+
+ /* Digital gain R */
+ ret = imx378_write_reg16(imx378, 0x210, imx378->red_balance->val);
+ if (ret < 0)
+ return ret;
+
+ /* Digital gain B */
+ ret = imx378_write_reg16(imx378, 0x212, imx378->blue_balance->val);
+ if (ret < 0)
+ return ret;
+
+ /* Digital gain GR */
+ ret = imx378_write_reg16(imx378, 0x20e, imx378->green_balance->val);
+ if (ret < 0)
+ return ret;
+
+ /* Digital gain GB */
+ ret = imx378_write_reg16(imx378, 0x214, imx378->green_balance->val);
+ if (ret < 0)
+ return ret;
+
+ /* Release group hold */
+ return regmap_write(imx378->regmap, 0x104, 0);
+}
+
+static int imx378_g_temperature(struct imx378 *imx378, s32 *temperature)
+{
+ unsigned int aux;
+ int ret;
+
+ if (imx378->streaming) {
+ ret = regmap_read(imx378->regmap, 0x13a, &aux);
+ if (ret < 0)
+ return ret;
+
+ if (aux >= 0xec)
+ *temperature = (aux - 0xec - 20) * 1000;
+ else
+ *temperature = (aux * 1000);
+ }
+
+ dev_err(imx378->dev,
+ "Sensor is powered off, returning invalid temperature\n");
+
+ return 0;
+}
+
+static int imx378_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct imx378 *imx378 = container_of(ctrl->handler,
+ struct imx378, ctrls);
+ int ret;
+
+ /*
+ * Applying V4L2 control value only happens
+ * when power is up for streaming
+ */
+ if (!pm_runtime_get_if_in_use(imx378->dev))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_TEMPERATURE:
+ ret = imx378_g_temperature(imx378, &ctrl->val);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ pm_runtime_put(imx378->dev);
+
+ return ret;
+}
+
+static int imx378_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct imx378 *imx378 = container_of(ctrl->handler,
+ struct imx378, ctrls);
+ int ret;
+
+ /*
+ * Applying V4L2 control value only happens
+ * when power is up for streaming
+ */
+ if (!pm_runtime_get_if_in_use(imx378->dev))
+ return 0;
+
+ switch (ctrl->id) {
+ case V4L2_CID_EXPOSURE_ABSOLUTE:
+ ret = imx378_set_exposure(imx378);
+ break;
+ case V4L2_CID_ANALOGUE_GAIN:
+ ret = imx378_set_analogue_gain(imx378);
+ break;
+ case V4L2_CID_DIGITAL_GAIN:
+ ret = imx378_set_digital_gain_global(imx378);
+ break;
+ case V4L2_CID_RED_BALANCE:
+ case V4L2_CID_BLUE_BALANCE:
+ case IMX378_CID_GREEN_BALANCE:
+ ret = imx378_set_digital_gain_by_color(imx378);
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ pm_runtime_put(imx378->dev);
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops imx378_ctrl_ops = {
+ .g_volatile_ctrl = imx378_g_volatile_ctrl,
+ .s_ctrl = imx378_set_ctrl,
+};
+
+#define MAX_CMD 4
+static int imx378_write_table(struct imx378 *imx378,
+ const struct reg_8 table[])
+{
+ u8 vals[MAX_CMD];
+ int i, ret;
+
+ for (table = table; table->addr != IMX378_TABLE_END ; table++) {
+ if (table->addr == IMX378_TABLE_WAIT_MS) {
+ usleep_range(table->val * 1000,
+ table->val * 1000 + 500);
+ continue;
+ }
+
+ for (i = 0; i < MAX_CMD; i++) {
+ if (table[i].addr != (table[0].addr + i))
+ break;
+ vals[i] = table[i].val;
+ }
+
+ ret = regmap_bulk_write(imx378->regmap, table->addr, vals, i);
+ usleep_range(80, 120);
+
+ if (ret) {
+ dev_err(imx378->dev, "write_table error: %d\n", ret);
+ return ret;
+ }
+
+ table += i - 1;
+ }
+
+ return 0;
+}
+
+static int imx378_start_streaming(struct imx378 *imx378)
+{
+ int ret;
+
+ ret = imx378_write_table(imx378, mode_table_common);
+ if (ret < 0) {
+ dev_err(imx378->dev, "could not send common table %d\n", ret);
+ goto error;
+ }
+
+ ret = __v4l2_ctrl_handler_setup(&imx378->ctrls);
+ if (ret < 0) {
+ dev_err(imx378->dev, "could not sync v4l2 controls\n");
+ goto error;
+ }
+
+ ret = imx378_set_img_size(imx378);
+ if (ret < 0) {
+ dev_err(imx378->dev, "could not set image size\n");
+ goto error;
+ }
+
+ /* set orientation */
+ ret = regmap_write(imx378->regmap, 0x101,
+ imx378->hflip->val | imx378->vflip->val << 1);
+ if (ret < 0)
+ goto error;
+
+ /* set temperature control */
+ ret = regmap_write(imx378->regmap, 0x138, 1);
+ if (ret < 0)
+ goto error;
+
+ ret = regmap_write(imx378->regmap, 0x100, 1);
+ if (ret < 0) {
+ dev_err(imx378->dev, "could not send start table %d\n", ret);
+ goto error;
+ }
+
+ usleep_range(4000, 6000);
+
+ return 0;
+
+error:
+ mutex_unlock(&imx378->mutex);
+ return ret;
+}
+
+static int imx378_stop_streaming(struct imx378 *imx378)
+{
+ int ret;
+
+ ret = regmap_write(imx378->regmap, 0x100, 0);
+ if (ret < 0)
+ dev_err(imx378->dev, "could not send stop table %d\n", ret);
+
+ return ret;
+}
+
+static int imx378_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct imx378 *imx378 = to_imx378(sd);
+ int ret;
+
+ mutex_lock(&imx378->mutex);
+
+ if (imx378->streaming == enable) {
+ mutex_unlock(&imx378->mutex);
+ return 0;
+ }
+
+ if (enable) {
+ ret = pm_runtime_get_sync(imx378->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(imx378->dev);
+ goto err_unlock;
+ }
+
+ ret = imx378_start_streaming(imx378);
+ if (ret < 0)
+ goto err_rpm_put;
+ } else {
+ ret = imx378_stop_streaming(imx378);
+ if (ret < 0)
+ goto err_rpm_put;
+ pm_runtime_put(imx378->dev);
+ }
+
+ imx378->streaming = enable;
+
+ mutex_unlock(&imx378->mutex);
+
+ return 0;
+
+err_rpm_put:
+ pm_runtime_put(imx378->dev);
+err_unlock:
+ mutex_unlock(&imx378->mutex);
+
+ return ret;
+}
+
+static int imx378_entity_init_cfg(struct v4l2_subdev *sd,
+ struct v4l2_subdev_pad_config *cfg)
+{
+ struct v4l2_subdev_format fmt = { };
+ struct v4l2_subdev_frame_interval fival = { };
+
+ if (!cfg) {
+ fmt.which = cfg ? V4L2_SUBDEV_FORMAT_TRY :
+ V4L2_SUBDEV_FORMAT_ACTIVE;
+ fmt.format.width = IMX378_MAX_BOUNDS_WIDTH;
+ fmt.format.height = IMX378_MAX_BOUNDS_HEIGHT;
+
+ imx378_set_fmt(sd, cfg, &fmt);
+
+ fival.interval = (struct v4l2_fract) IMX378_DEFAULT_FIVAL;
+ imx378_s_frame_interval(sd, &fival);
+ }
+
+ return 0;
+}
+
+static const struct v4l2_subdev_video_ops imx378_video_ops = {
+ .s_stream = imx378_s_stream,
+ .g_frame_interval = imx378_g_frame_interval,
+ .s_frame_interval = imx378_s_frame_interval,
+};
+
+static const struct v4l2_subdev_pad_ops imx378_subdev_pad_ops = {
+ .enum_mbus_code = imx378_enum_mbus_code,
+ .enum_frame_size = imx378_enum_frame_size,
+ .enum_frame_interval = imx378_enum_frame_interval,
+ .get_fmt = imx378_get_fmt,
+ .set_fmt = imx378_set_fmt,
+ .get_selection = imx378_get_selection,
+ .set_selection = imx378_set_selection,
+ .init_cfg = imx378_entity_init_cfg,
+};
+
+static const struct v4l2_subdev_ops imx378_subdev_ops = {
+ .core = &imx378_core_ops,
+ .video = &imx378_video_ops,
+ .pad = &imx378_subdev_pad_ops,
+};
+
+static const struct regmap_config sensor_regmap_config = {
+ .reg_bits = 16,
+ .val_bits = 8,
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int imx378_get_regulators(struct device *dev, struct imx378 *imx378)
+{
+ unsigned int i;
+
+ for (i = 0; i < IMX378_NUM_SUPPLIES; i++)
+ imx378->supplies[i].supply = imx378_supply_name[i];
+
+ return devm_regulator_bulk_get(dev, IMX378_NUM_SUPPLIES,
+ imx378->supplies);
+}
+
+struct v4l2_ctrl
+*imx378_ctrl_new_str_custom(struct v4l2_ctrl_handler *hdl, u32 id, char *name,
+ s64 min, s64 max, u64 step, s64 def)
+{
+ static struct v4l2_ctrl_config ctrl = {
+ .ops = &imx378_ctrl_ops,
+ .type = V4L2_CTRL_TYPE_STRING,
+ };
+
+ ctrl.id = id;
+ ctrl.name = name;
+ ctrl.min = min;
+ ctrl.max = max;
+ ctrl.step = step;
+ ctrl.def = def;
+
+ return v4l2_ctrl_new_custom(hdl, &ctrl, NULL);
+}
+
+struct v4l2_ctrl
+*imx378_ctrl_new_int_custom(struct v4l2_ctrl_handler *hdl, u32 id, char *name,
+ s64 min, s64 max, u64 step, s64 def)
+{
+ static struct v4l2_ctrl_config ctrl = {
+ .ops = &imx378_ctrl_ops,
+ .type = V4L2_CTRL_TYPE_INTEGER,
+ };
+
+ ctrl.id = id;
+ ctrl.name = name;
+ ctrl.min = min;
+ ctrl.max = max;
+ ctrl.step = step;
+ ctrl.def = def;
+
+ return v4l2_ctrl_new_custom(hdl, &ctrl, NULL);
+}
+
+static int imx378_init_controls(struct imx378 *imx378)
+{
+ static const s64 link_freq[] = {
+ IMX378_DEFAULT_LINK_FREQ,
+ };
+ int ret;
+
+ mutex_init(&imx378->mutex);
+ imx378->ctrls.lock = &imx378->mutex;
+
+ v4l2_ctrl_handler_init(&imx378->ctrls, 12);
+
+ imx378->pixel_rate = v4l2_ctrl_new_std(&imx378->ctrls, NULL,
+ V4L2_CID_PIXEL_RATE, 0,
+ IMX378_DEFAULT_PIXEL_RATE, 1,
+ IMX378_DEFAULT_PIXEL_RATE);
+
+ imx378->link_freq = v4l2_ctrl_new_int_menu(&imx378->ctrls, NULL,
+ V4L2_CID_LINK_FREQ,
+ ARRAY_SIZE(link_freq) - 1,
+ 0, link_freq);
+ if (imx378->link_freq)
+ imx378->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+ imx378->exposure = v4l2_ctrl_new_std(&imx378->ctrls, &imx378_ctrl_ops,
+ V4L2_CID_EXPOSURE_ABSOLUTE,
+ 0x8, 0xffff, 1, 0xc70);
+
+ imx378->hflip = v4l2_ctrl_new_std(&imx378->ctrls, &imx378_ctrl_ops,
+ V4L2_CID_HFLIP, 0, 1, 1, 0);
+ if (imx378->hflip)
+ imx378->hflip->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+ imx378->vflip = v4l2_ctrl_new_std(&imx378->ctrls, &imx378_ctrl_ops,
+ V4L2_CID_VFLIP, 0, 1, 1, 0);
+ if (imx378->vflip)
+ imx378->vflip->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+ imx378->analogue_gain = v4l2_ctrl_new_std(&imx378->ctrls,
+ &imx378_ctrl_ops,
+ V4L2_CID_ANALOGUE_GAIN,
+ 0, 978, 1, 0);
+
+ imx378->digital_gain = v4l2_ctrl_new_std(&imx378->ctrls,
+ &imx378_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
+ 0x100, 0xfff, 1, 0x100);
+
+ imx378->red_balance = v4l2_ctrl_new_std(&imx378->ctrls,
+ &imx378_ctrl_ops, V4L2_CID_RED_BALANCE,
+ 0x100, 0xfff, 1, 0x221);
+
+ imx378->blue_balance = v4l2_ctrl_new_std(&imx378->ctrls,
+ &imx378_ctrl_ops, V4L2_CID_BLUE_BALANCE,
+ 0x100, 0xfff, 1, 0x1ee);
+
+ imx378->green_balance = imx378_ctrl_new_int_custom(&imx378->ctrls,
+ IMX378_CID_GREEN_BALANCE,
+ "Green Balance",
+ 0x100, 0xfff, 1, 0x100);
+ if (imx378->green_balance)
+ imx378->green_balance->flags = V4L2_CTRL_FLAG_SLIDER;
+
+ imx378->temperature = v4l2_ctrl_new_std(&imx378->ctrls,
+ &imx378_ctrl_ops, V4L2_CID_TEMPERATURE,
+ -200000, 800000, 1, 250000);
+ if (imx378->temperature)
+ imx378->temperature->name = "Sensor Temperature";
+
+ ret = imx378->ctrls.error;
+ if (ret) {
+ dev_err(imx378->dev, "%s control init failed (%d)\n",
+ __func__, ret);
+ goto error;
+ }
+
+ imx378->sd.ctrl_handler = &imx378->ctrls;
+
+ return 0;
+
+error:
+ v4l2_ctrl_handler_free(&imx378->ctrls);
+ return ret;
+}
+
+static int imx378_parse_fwnode(struct device *dev)
+{
+ struct fwnode_handle *endpoint;
+ struct v4l2_fwnode_endpoint bus_cfg = {
+ .bus_type = V4L2_MBUS_CSI2_DPHY,
+ };
+ unsigned int i;
+ 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, &bus_cfg);
+ if (ret) {
+ dev_err(dev, "parsing endpoint node failed\n");
+ goto done;
+ }
+
+ for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
+ if (bus_cfg.link_frequencies[i] == IMX378_DEFAULT_LINK_FREQ)
+ break;
+
+ if (i == bus_cfg.nr_of_link_frequencies) {
+ dev_err(dev, "link-frequencies %d not supported, Please review your DT\n",
+ IMX378_DEFAULT_LINK_FREQ);
+ ret = -EINVAL;
+ goto done;
+ }
+
+done:
+ v4l2_fwnode_endpoint_free(&bus_cfg);
+ fwnode_handle_put(endpoint);
+ return ret;
+}
+
+static int __maybe_unused imx378_suspend(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct imx378 *imx378 = to_imx378(sd);
+
+ if (imx378->streaming)
+ imx378_stop_streaming(imx378);
+
+ return 0;
+}
+
+static int __maybe_unused imx378_resume(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct imx378 *imx378 = to_imx378(sd);
+ int ret;
+
+ if (imx378->streaming) {
+ ret = imx378_start_streaming(imx378);
+ if (ret)
+ goto error;
+ }
+
+ return 0;
+
+error:
+ imx378_stop_streaming(imx378);
+ imx378->streaming = 0;
+ return ret;
+}
+
+static int imx378_probe(struct i2c_client *client)
+{
+ struct device *dev = &client->dev;
+ struct imx378 *imx378;
+ int ret;
+
+ ret = imx378_parse_fwnode(dev);
+ if (ret)
+ return ret;
+
+ imx378 = devm_kzalloc(dev, sizeof(*imx378), GFP_KERNEL);
+ if (!imx378)
+ return -ENOMEM;
+
+ imx378->dev = dev;
+
+ imx378->xclk = devm_clk_get(dev, NULL);
+ if (IS_ERR(imx378->xclk)) {
+ dev_err(dev, "could not get xclk");
+ return PTR_ERR(imx378->xclk);
+ }
+
+ ret = clk_set_rate(imx378->xclk, IMX378_DEFAULT_CLK_FREQ);
+ if (ret) {
+ dev_err(dev, "could not set xclk frequency\n");
+ return ret;
+ }
+
+ ret = imx378_get_regulators(dev, imx378);
+ if (ret < 0) {
+ dev_err(dev, "could not get regulators\n");
+ return ret;
+ }
+
+ imx378->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
+ if (IS_ERR(imx378->enable_gpio)) {
+ dev_err(dev, "could get enable gpio\n");
+ return PTR_ERR(imx378->enable_gpio);
+ }
+
+ imx378->regmap = devm_regmap_init_i2c(client, &sensor_regmap_config);
+ if (IS_ERR(imx378->regmap)) {
+ dev_err(dev, "regmap init failed\n");
+ return PTR_ERR(imx378->regmap);
+ }
+
+ v4l2_i2c_subdev_init(&imx378->sd, client, &imx378_subdev_ops);
+
+ imx378_power_on(imx378->dev);
+
+ pm_runtime_set_active(imx378->dev);
+ pm_runtime_enable(imx378->dev);
+ pm_runtime_idle(imx378->dev);
+
+ ret = imx378_init_controls(imx378);
+ if (ret) {
+ dev_err(dev, "failed to init controls: %d", ret);
+ goto error_probe;
+ }
+
+ imx378->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+ imx378->pad.flags = MEDIA_PAD_FL_SOURCE;
+ imx378->sd.dev = &client->dev;
+ imx378->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+
+ ret = media_entity_pads_init(&imx378->sd.entity, 1, &imx378->pad);
+ if (ret < 0) {
+ dev_err(dev, "could not register media entity\n");
+ goto free_ctrl;
+ }
+
+ imx378_entity_init_cfg(&imx378->sd, NULL);
+
+ ret = v4l2_async_register_subdev_sensor_common(&imx378->sd);
+ if (ret < 0) {
+ dev_err(dev, "could not register v4l2 device\n");
+ goto free_entity;
+ }
+
+ ret = v4l2_device_register_subdev(&imx378->v4l2_dev, &imx378->sd);
+ if (ret < 0) {
+ dev_err(dev, "could not register v4l2 sd\n");
+ goto free_entity;
+ }
+
+ ret = v4l2_device_register_subdev_nodes(&imx378->v4l2_dev);
+ if (ret) {
+ dev_err(dev, "imx378 subdev nodes registration failed (err=%d)\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+
+free_entity:
+ media_entity_cleanup(&imx378->sd.entity);
+free_ctrl:
+ v4l2_ctrl_handler_free(&imx378->ctrls);
+error_probe:
+ mutex_destroy(&imx378->mutex);
+ pm_runtime_disable(imx378->dev);
+
+ return ret;
+}
+
+static int imx378_remove(struct i2c_client *client)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct imx378 *imx378 = to_imx378(sd);
+
+ v4l2_async_unregister_subdev(&imx378->sd);
+ media_entity_cleanup(&imx378->sd.entity);
+ v4l2_ctrl_handler_free(&imx378->ctrls);
+
+ pm_runtime_disable(&client->dev);
+ pm_runtime_set_suspended(&client->dev);
+
+ mutex_destroy(&imx378->mutex);
+
+ return 0;
+}
+
+static const struct of_device_id imx378_of_match[] = {
+ { .compatible = "sony,imx378" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, imx378_of_match);
+
+static const struct i2c_device_id imx378_id[] = {
+ {"imx378", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, imx378_id);
+
+static const struct dev_pm_ops imx378_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(imx378_suspend, imx378_resume)
+ SET_RUNTIME_PM_OPS(imx378_power_off, imx378_power_on, NULL)
+};
+
+static struct i2c_driver imx378_i2c_driver = {
+ .driver = {
+ .of_match_table = imx378_of_match,
+ .pm = &imx378_pm_ops,
+ .name = "imx378",
+ },
+ .probe_new = imx378_probe,
+ .remove = imx378_remove,
+ .id_table = imx378_id,
+};
+
+module_i2c_driver(imx378_i2c_driver);
+
+MODULE_DESCRIPTION("Sony IMX378 Camera driver");
+MODULE_AUTHOR("Daniel Gomez <daniel@...c.com>");
+MODULE_LICENSE("GPL v2");
--
2.25.1
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