This is an automatic generated email to let you know that the following patch 
were queued:

Subject: media: hi556: Add support for Hi-556 sensor
Author:  Shawn Tu <shawnx...@intel.com>
Date:    Fri Nov 1 07:44:31 2019 -0300

Add a V4L2 sub-device driver for Hynix Hi-556 image sensor.
This is a camera sensor using the I2C bus for control and the
CSI-2 bus for data.

This driver supports following features:
- manual exposure and analog/digital gain control support
- vblank/hblank control support
- test pattern support
- media controller support
- runtime PM support
- support following resolutions:
  + 2592x1944 at 30FPS
  + 1296x972  at 30FPS

[sakari.ai...@linux.intel.com: Remove MEDIA_CAMERA_SUPPORT from Kconfig 
dependencies]

Signed-off-by: Shawn Tu <shawnx...@intel.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mche...@kernel.org>

 MAINTAINERS                |    7 +
 drivers/media/i2c/Kconfig  |   12 +
 drivers/media/i2c/Makefile |    1 +
 drivers/media/i2c/hi556.c  | 1200 ++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 1220 insertions(+)

---

diff --git a/MAINTAINERS b/MAINTAINERS
index 4e3300162ade..ea0dcc0b9763 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7554,6 +7554,13 @@ L:       linux-ker...@vger.kernel.org
 S:     Maintained
 F:     arch/x86/kernel/cpu/hygon.c
 
+HYNIX HI556 SENSOR DRIVER
+M:     Shawn Tu <shawnx...@intel.com>
+L:     linux-me...@vger.kernel.org
+T:     git git://linuxtv.org/media_tree.git
+S:     Maintained
+F:     drivers/media/i2c/hi556.c
+
 Hyper-V CORE AND DRIVERS
 M:     "K. Y. Srinivasan" <k...@microsoft.com>
 M:     Haiyang Zhang <haiya...@microsoft.com>
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index 992f60825ccd..c68e002d26ea 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -568,6 +568,18 @@ config VIDEO_SMIAPP_PLL
 
 if MEDIA_CAMERA_SUPPORT
 
+config VIDEO_HI556
+       tristate "Hynix Hi-556 sensor support"
+       depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+       depends on MEDIA_CONTROLLER
+       select V4L2_FWNODE
+       help
+         This is a Video4Linux2 sensor driver for the Hynix
+         Hi-556 camera.
+
+         To compile this driver as a module, choose M here: the
+         module will be called hi556.
+
 config VIDEO_IMX214
        tristate "Sony IMX214 sensor support"
        depends on GPIOLIB && I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 6a80a353393f..c147bb9d28db 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -109,6 +109,7 @@ obj-$(CONFIG_VIDEO_I2C)             += video-i2c.o
 obj-$(CONFIG_VIDEO_ML86V7667)  += ml86v7667.o
 obj-$(CONFIG_VIDEO_OV2659)     += ov2659.o
 obj-$(CONFIG_VIDEO_TC358743)   += tc358743.o
+obj-$(CONFIG_VIDEO_HI556)      += hi556.o
 obj-$(CONFIG_VIDEO_IMX214)     += imx214.o
 obj-$(CONFIG_VIDEO_IMX258)     += imx258.o
 obj-$(CONFIG_VIDEO_IMX274)     += imx274.o
diff --git a/drivers/media/i2c/hi556.c b/drivers/media/i2c/hi556.c
new file mode 100644
index 000000000000..c66cd1446c0f
--- /dev/null
+++ b/drivers/media/i2c/hi556.c
@@ -0,0 +1,1200 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2019 Intel Corporation.
+
+#include <asm/unaligned.h>
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-fwnode.h>
+
+#define HI556_REG_VALUE_08BIT          1
+#define HI556_REG_VALUE_16BIT          2
+#define HI556_REG_VALUE_24BIT          3
+
+#define HI556_LINK_FREQ_437MHZ         437000000ULL
+#define HI556_MCLK                     19200000
+#define HI556_DATA_LANES               2
+#define HI556_RGB_DEPTH                        10
+
+#define HI556_REG_CHIP_ID              0x0f16
+#define HI556_CHIP_ID                  0x0556
+
+#define HI556_REG_MODE_SELECT          0x0a00
+#define HI556_MODE_STANDBY             0x0000
+#define HI556_MODE_STREAMING           0x0100
+
+/* vertical-timings from sensor */
+#define HI556_REG_FLL                  0x0006
+#define HI556_FLL_30FPS                        0x0814
+#define HI556_FLL_30FPS_MIN            0x0814
+#define HI556_FLL_MAX                  0x7fff
+
+/* horizontal-timings from sensor */
+#define HI556_REG_LLP                  0x0008
+
+/* Exposure controls from sensor */
+#define HI556_REG_EXPOSURE             0x0074
+#define HI556_EXPOSURE_MIN             6
+#define HI556_EXPOSURE_MAX_MARGIN      2
+#define HI556_EXPOSURE_STEP            1
+
+/* Analog gain controls from sensor */
+#define HI556_REG_ANALOG_GAIN          0x0077
+#define HI556_ANAL_GAIN_MIN            0
+#define HI556_ANAL_GAIN_MAX            240
+#define HI556_ANAL_GAIN_STEP           1
+
+/* Digital gain controls from sensor */
+#define HI556_REG_MWB_GR_GAIN          0x0078
+#define HI556_REG_MWB_GB_GAIN          0x007a
+#define HI556_REG_MWB_R_GAIN           0x007c
+#define HI556_REG_MWB_B_GAIN           0x007e
+#define HI556_DGTL_GAIN_MIN            0
+#define HI556_DGTL_GAIN_MAX            2048
+#define HI556_DGTL_GAIN_STEP           1
+#define HI556_DGTL_GAIN_DEFAULT                256
+
+/* Test Pattern Control */
+#define HI556_REG_ISP                  0X0a05
+#define HI556_REG_ISP_TPG_EN           0x01
+#define HI556_REG_TEST_PATTERN         0x0201
+
+enum {
+       HI556_LINK_FREQ_437MHZ_INDEX,
+};
+
+struct hi556_reg {
+       u16 address;
+       u16 val;
+};
+
+struct hi556_reg_list {
+       u32 num_of_regs;
+       const struct hi556_reg *regs;
+};
+
+struct hi556_link_freq_config {
+       const struct hi556_reg_list reg_list;
+};
+
+struct hi556_mode {
+       /* Frame width in pixels */
+       u32 width;
+
+       /* Frame height in pixels */
+       u32 height;
+
+       /* Horizontal timining size */
+       u32 llp;
+
+       /* Default vertical timining size */
+       u32 fll_def;
+
+       /* Min vertical timining size */
+       u32 fll_min;
+
+       /* Link frequency needed for this resolution */
+       u32 link_freq_index;
+
+       /* Sensor register settings for this resolution */
+       const struct hi556_reg_list reg_list;
+};
+
+#define to_hi556(_sd) container_of(_sd, struct hi556, sd)
+
+//SENSOR_INITIALIZATION
+static const struct hi556_reg mipi_data_rate_874mbps[] = {
+       {0x0e00, 0x0102},
+       {0x0e02, 0x0102},
+       {0x0e0c, 0x0100},
+       {0x2000, 0x7400},
+       {0x2002, 0x001c},
+       {0x2004, 0x0242},
+       {0x2006, 0x0942},
+       {0x2008, 0x7007},
+       {0x200a, 0x0fd9},
+       {0x200c, 0x0259},
+       {0x200e, 0x7008},
+       {0x2010, 0x160e},
+       {0x2012, 0x0047},
+       {0x2014, 0x2118},
+       {0x2016, 0x0041},
+       {0x2018, 0x00d8},
+       {0x201a, 0x0145},
+       {0x201c, 0x0006},
+       {0x201e, 0x0181},
+       {0x2020, 0x13cc},
+       {0x2022, 0x2057},
+       {0x2024, 0x7001},
+       {0x2026, 0x0fca},
+       {0x2028, 0x00cb},
+       {0x202a, 0x009f},
+       {0x202c, 0x7002},
+       {0x202e, 0x13cc},
+       {0x2030, 0x019b},
+       {0x2032, 0x014d},
+       {0x2034, 0x2987},
+       {0x2036, 0x2766},
+       {0x2038, 0x0020},
+       {0x203a, 0x2060},
+       {0x203c, 0x0e5d},
+       {0x203e, 0x181d},
+       {0x2040, 0x2066},
+       {0x2042, 0x20c4},
+       {0x2044, 0x5000},
+       {0x2046, 0x0005},
+       {0x2048, 0x0000},
+       {0x204a, 0x01db},
+       {0x204c, 0x025a},
+       {0x204e, 0x00c0},
+       {0x2050, 0x0005},
+       {0x2052, 0x0006},
+       {0x2054, 0x0ad9},
+       {0x2056, 0x0259},
+       {0x2058, 0x0618},
+       {0x205a, 0x0258},
+       {0x205c, 0x2266},
+       {0x205e, 0x20c8},
+       {0x2060, 0x2060},
+       {0x2062, 0x707b},
+       {0x2064, 0x0fdd},
+       {0x2066, 0x81b8},
+       {0x2068, 0x5040},
+       {0x206a, 0x0020},
+       {0x206c, 0x5060},
+       {0x206e, 0x3143},
+       {0x2070, 0x5081},
+       {0x2072, 0x025c},
+       {0x2074, 0x7800},
+       {0x2076, 0x7400},
+       {0x2078, 0x001c},
+       {0x207a, 0x0242},
+       {0x207c, 0x0942},
+       {0x207e, 0x0bd9},
+       {0x2080, 0x0259},
+       {0x2082, 0x7008},
+       {0x2084, 0x160e},
+       {0x2086, 0x0047},
+       {0x2088, 0x2118},
+       {0x208a, 0x0041},
+       {0x208c, 0x00d8},
+       {0x208e, 0x0145},
+       {0x2090, 0x0006},
+       {0x2092, 0x0181},
+       {0x2094, 0x13cc},
+       {0x2096, 0x2057},
+       {0x2098, 0x7001},
+       {0x209a, 0x0fca},
+       {0x209c, 0x00cb},
+       {0x209e, 0x009f},
+       {0x20a0, 0x7002},
+       {0x20a2, 0x13cc},
+       {0x20a4, 0x019b},
+       {0x20a6, 0x014d},
+       {0x20a8, 0x2987},
+       {0x20aa, 0x2766},
+       {0x20ac, 0x0020},
+       {0x20ae, 0x2060},
+       {0x20b0, 0x0e5d},
+       {0x20b2, 0x181d},
+       {0x20b4, 0x2066},
+       {0x20b6, 0x20c4},
+       {0x20b8, 0x50a0},
+       {0x20ba, 0x0005},
+       {0x20bc, 0x0000},
+       {0x20be, 0x01db},
+       {0x20c0, 0x025a},
+       {0x20c2, 0x00c0},
+       {0x20c4, 0x0005},
+       {0x20c6, 0x0006},
+       {0x20c8, 0x0ad9},
+       {0x20ca, 0x0259},
+       {0x20cc, 0x0618},
+       {0x20ce, 0x0258},
+       {0x20d0, 0x2266},
+       {0x20d2, 0x20c8},
+       {0x20d4, 0x2060},
+       {0x20d6, 0x707b},
+       {0x20d8, 0x0fdd},
+       {0x20da, 0x86b8},
+       {0x20dc, 0x50e0},
+       {0x20de, 0x0020},
+       {0x20e0, 0x5100},
+       {0x20e2, 0x3143},
+       {0x20e4, 0x5121},
+       {0x20e6, 0x7800},
+       {0x20e8, 0x3140},
+       {0x20ea, 0x01c4},
+       {0x20ec, 0x01c1},
+       {0x20ee, 0x01c0},
+       {0x20f0, 0x01c4},
+       {0x20f2, 0x2700},
+       {0x20f4, 0x3d40},
+       {0x20f6, 0x7800},
+       {0x20f8, 0xffff},
+       {0x27fe, 0xe000},
+       {0x3000, 0x60f8},
+       {0x3002, 0x187f},
+       {0x3004, 0x7060},
+       {0x3006, 0x0114},
+       {0x3008, 0x60b0},
+       {0x300a, 0x1473},
+       {0x300c, 0x0013},
+       {0x300e, 0x140f},
+       {0x3010, 0x0040},
+       {0x3012, 0x100f},
+       {0x3014, 0x60f8},
+       {0x3016, 0x187f},
+       {0x3018, 0x7060},
+       {0x301a, 0x0114},
+       {0x301c, 0x60b0},
+       {0x301e, 0x1473},
+       {0x3020, 0x0013},
+       {0x3022, 0x140f},
+       {0x3024, 0x0040},
+       {0x3026, 0x000f},
+
+       {0x0b00, 0x0000},
+       {0x0b02, 0x0045},
+       {0x0b04, 0xb405},
+       {0x0b06, 0xc403},
+       {0x0b08, 0x0081},
+       {0x0b0a, 0x8252},
+       {0x0b0c, 0xf814},
+       {0x0b0e, 0xc618},
+       {0x0b10, 0xa828},
+       {0x0b12, 0x004c},
+       {0x0b14, 0x4068},
+       {0x0b16, 0x0000},
+       {0x0f30, 0x5b15},
+       {0x0f32, 0x7067},
+       {0x0954, 0x0009},
+       {0x0956, 0x0000},
+       {0x0958, 0xbb80},
+       {0x095a, 0x5140},
+       {0x0c00, 0x1110},
+       {0x0c02, 0x0011},
+       {0x0c04, 0x0000},
+       {0x0c06, 0x0200},
+       {0x0c10, 0x0040},
+       {0x0c12, 0x0040},
+       {0x0c14, 0x0040},
+       {0x0c16, 0x0040},
+       {0x0a10, 0x4000},
+       {0x3068, 0xf800},
+       {0x306a, 0xf876},
+       {0x006c, 0x0000},
+       {0x005e, 0x0200},
+       {0x000e, 0x0100},
+       {0x0e0a, 0x0001},
+       {0x004a, 0x0100},
+       {0x004c, 0x0000},
+       {0x004e, 0x0100},
+       {0x000c, 0x0022},
+       {0x0008, 0x0b00},
+       {0x005a, 0x0202},
+       {0x0012, 0x000e},
+       {0x0018, 0x0a33},
+       {0x0022, 0x0008},
+       {0x0028, 0x0017},
+       {0x0024, 0x0028},
+       {0x002a, 0x002d},
+       {0x0026, 0x0030},
+       {0x002c, 0x07c9},
+       {0x002e, 0x1111},
+       {0x0030, 0x1111},
+       {0x0032, 0x1111},
+       {0x0006, 0x07bc},
+       {0x0a22, 0x0000},
+       {0x0a12, 0x0a20},
+       {0x0a14, 0x0798},
+       {0x003e, 0x0000},
+       {0x0074, 0x080e},
+       {0x0070, 0x0407},
+       {0x0002, 0x0000},
+       {0x0a02, 0x0100},
+       {0x0a24, 0x0100},
+       {0x0046, 0x0000},
+       {0x0076, 0x0000},
+       {0x0060, 0x0000},
+       {0x0062, 0x0530},
+       {0x0064, 0x0500},
+       {0x0066, 0x0530},
+       {0x0068, 0x0500},
+       {0x0122, 0x0300},
+       {0x015a, 0xff08},
+       {0x0804, 0x0300},
+       {0x0806, 0x0100},
+       {0x005c, 0x0102},
+       {0x0a1a, 0x0800},
+};
+
+static const struct hi556_reg mode_2592x1944_regs[] = {
+       {0x0a00, 0x0000},
+       {0x0b0a, 0x8252},
+       {0x0f30, 0x5b15},
+       {0x0f32, 0x7067},
+       {0x004a, 0x0100},
+       {0x004c, 0x0000},
+       {0x004e, 0x0100},
+       {0x000c, 0x0022},
+       {0x0008, 0x0b00},
+       {0x005a, 0x0202},
+       {0x0012, 0x000e},
+       {0x0018, 0x0a33},
+       {0x0022, 0x0008},
+       {0x0028, 0x0017},
+       {0x0024, 0x0028},
+       {0x002a, 0x002d},
+       {0x0026, 0x0030},
+       {0x002c, 0x07c9},
+       {0x002e, 0x1111},
+       {0x0030, 0x1111},
+       {0x0032, 0x1111},
+       {0x0006, 0x0814},
+       {0x0a22, 0x0000},
+       {0x0a12, 0x0a20},
+       {0x0a14, 0x0798},
+       {0x003e, 0x0000},
+       {0x0074, 0x0812},
+       {0x0070, 0x0409},
+       {0x0804, 0x0300},
+       {0x0806, 0x0100},
+       {0x0a04, 0x014a},
+       {0x090c, 0x0fdc},
+       {0x090e, 0x002d},
+
+       {0x0902, 0x4319},
+       {0x0914, 0xc10a},
+       {0x0916, 0x071f},
+       {0x0918, 0x0408},
+       {0x091a, 0x0c0d},
+       {0x091c, 0x0f09},
+       {0x091e, 0x0a00},
+       {0x0958, 0xbb80},
+};
+
+static const struct hi556_reg mode_1296x972_regs[] = {
+       {0x0a00, 0x0000},
+       {0x0b0a, 0x8259},
+       {0x0f30, 0x5b15},
+       {0x0f32, 0x7167},
+       {0x004a, 0x0100},
+       {0x004c, 0x0000},
+       {0x004e, 0x0100},
+       {0x000c, 0x0122},
+       {0x0008, 0x0b00},
+       {0x005a, 0x0404},
+       {0x0012, 0x000c},
+       {0x0018, 0x0a33},
+       {0x0022, 0x0008},
+       {0x0028, 0x0017},
+       {0x0024, 0x0022},
+       {0x002a, 0x002b},
+       {0x0026, 0x0030},
+       {0x002c, 0x07c9},
+       {0x002e, 0x3311},
+       {0x0030, 0x3311},
+       {0x0032, 0x3311},
+       {0x0006, 0x0814},
+       {0x0a22, 0x0000},
+       {0x0a12, 0x0510},
+       {0x0a14, 0x03cc},
+       {0x003e, 0x0000},
+       {0x0074, 0x0812},
+       {0x0070, 0x0409},
+       {0x0804, 0x0308},
+       {0x0806, 0x0100},
+       {0x0a04, 0x016a},
+       {0x090e, 0x0010},
+       {0x090c, 0x09c0},
+
+       {0x0902, 0x4319},
+       {0x0914, 0xc106},
+       {0x0916, 0x040e},
+       {0x0918, 0x0304},
+       {0x091a, 0x0708},
+       {0x091c, 0x0e06},
+       {0x091e, 0x0300},
+       {0x0958, 0xbb80},
+};
+
+static const char * const hi556_test_pattern_menu[] = {
+       "Disabled",
+       "Solid Colour",
+       "100% Colour Bars",
+       "Fade To Grey Colour Bars",
+       "PN9",
+       "Gradient Horizontal",
+       "Gradient Vertical",
+       "Check Board",
+       "Slant Pattern",
+};
+
+static const s64 link_freq_menu_items[] = {
+       HI556_LINK_FREQ_437MHZ,
+};
+
+static const struct hi556_link_freq_config link_freq_configs[] = {
+       [HI556_LINK_FREQ_437MHZ_INDEX] = {
+               .reg_list = {
+                       .num_of_regs = ARRAY_SIZE(mipi_data_rate_874mbps),
+                       .regs = mipi_data_rate_874mbps,
+               }
+       }
+};
+
+static const struct hi556_mode supported_modes[] = {
+       {
+               .width = 2592,
+               .height = 1944,
+               .fll_def = HI556_FLL_30FPS,
+               .fll_min = HI556_FLL_30FPS_MIN,
+               .llp = 0x0b00,
+               .reg_list = {
+                       .num_of_regs = ARRAY_SIZE(mode_2592x1944_regs),
+                       .regs = mode_2592x1944_regs,
+               },
+               .link_freq_index = HI556_LINK_FREQ_437MHZ_INDEX,
+       },
+       {
+               .width = 1296,
+               .height = 972,
+               .fll_def = HI556_FLL_30FPS,
+               .fll_min = HI556_FLL_30FPS_MIN,
+               .llp = 0x0b00,
+               .reg_list = {
+                       .num_of_regs = ARRAY_SIZE(mode_1296x972_regs),
+                       .regs = mode_1296x972_regs,
+               },
+               .link_freq_index = HI556_LINK_FREQ_437MHZ_INDEX,
+       }
+};
+
+struct hi556 {
+       struct v4l2_subdev sd;
+       struct media_pad pad;
+       struct v4l2_ctrl_handler ctrl_handler;
+
+       /* V4L2 Controls */
+       struct v4l2_ctrl *link_freq;
+       struct v4l2_ctrl *pixel_rate;
+       struct v4l2_ctrl *vblank;
+       struct v4l2_ctrl *hblank;
+       struct v4l2_ctrl *exposure;
+
+       /* Current mode */
+       const struct hi556_mode *cur_mode;
+
+       /* To serialize asynchronus callbacks */
+       struct mutex mutex;
+
+       /* Streaming on/off */
+       bool streaming;
+};
+
+static u64 to_pixel_rate(u32 f_index)
+{
+       u64 pixel_rate = link_freq_menu_items[f_index] * 2 * HI556_DATA_LANES;
+
+       do_div(pixel_rate, HI556_RGB_DEPTH);
+
+       return pixel_rate;
+}
+
+static int hi556_read_reg(struct hi556 *hi556, u16 reg, u16 len, u32 *val)
+{
+       struct i2c_client *client = v4l2_get_subdevdata(&hi556->sd);
+       struct i2c_msg msgs[2];
+       u8 addr_buf[2];
+       u8 data_buf[4] = {0};
+       int ret;
+
+       if (len > 4)
+               return -EINVAL;
+
+       put_unaligned_be16(reg, addr_buf);
+       msgs[0].addr = client->addr;
+       msgs[0].flags = 0;
+       msgs[0].len = sizeof(addr_buf);
+       msgs[0].buf = addr_buf;
+       msgs[1].addr = client->addr;
+       msgs[1].flags = I2C_M_RD;
+       msgs[1].len = len;
+       msgs[1].buf = &data_buf[4 - len];
+
+       ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
+       if (ret != ARRAY_SIZE(msgs))
+               return -EIO;
+
+       *val = get_unaligned_be32(data_buf);
+
+       return 0;
+}
+
+static int hi556_write_reg(struct hi556 *hi556, u16 reg, u16 len, u32 val)
+{
+       struct i2c_client *client = v4l2_get_subdevdata(&hi556->sd);
+       u8 buf[6];
+
+       if (len > 4)
+               return -EINVAL;
+
+       put_unaligned_be16(reg, buf);
+       put_unaligned_be32(val << 8 * (4 - len), buf + 2);
+       if (i2c_master_send(client, buf, len + 2) != len + 2)
+               return -EIO;
+
+       return 0;
+}
+
+static int hi556_write_reg_list(struct hi556 *hi556,
+                               const struct hi556_reg_list *r_list)
+{
+       struct i2c_client *client = v4l2_get_subdevdata(&hi556->sd);
+       unsigned int i;
+       int ret;
+
+       for (i = 0; i < r_list->num_of_regs; i++) {
+               ret = hi556_write_reg(hi556, r_list->regs[i].address,
+                                     HI556_REG_VALUE_16BIT,
+                                     r_list->regs[i].val);
+               if (ret) {
+                       dev_err_ratelimited(&client->dev,
+                                           "failed to write reg 0x%4.4x. error 
= %d",
+                                           r_list->regs[i].address, ret);
+                       return ret;
+               }
+       }
+
+       return 0;
+}
+
+static int hi556_update_digital_gain(struct hi556 *hi556, u32 d_gain)
+{
+       int ret;
+
+       ret = hi556_write_reg(hi556, HI556_REG_MWB_GR_GAIN,
+                             HI556_REG_VALUE_16BIT, d_gain);
+       if (ret)
+               return ret;
+
+       ret = hi556_write_reg(hi556, HI556_REG_MWB_GB_GAIN,
+                             HI556_REG_VALUE_16BIT, d_gain);
+       if (ret)
+               return ret;
+
+       ret = hi556_write_reg(hi556, HI556_REG_MWB_R_GAIN,
+                             HI556_REG_VALUE_16BIT, d_gain);
+       if (ret)
+               return ret;
+
+       return hi556_write_reg(hi556, HI556_REG_MWB_B_GAIN,
+                              HI556_REG_VALUE_16BIT, d_gain);
+}
+
+static int hi556_test_pattern(struct hi556 *hi556, u32 pattern)
+{
+       int ret;
+       u32 val;
+
+       if (pattern) {
+               ret = hi556_read_reg(hi556, HI556_REG_ISP,
+                                    HI556_REG_VALUE_08BIT, &val);
+               if (ret)
+                       return ret;
+
+               ret = hi556_write_reg(hi556, HI556_REG_ISP,
+                                     HI556_REG_VALUE_08BIT,
+                                     val | HI556_REG_ISP_TPG_EN);
+               if (ret)
+                       return ret;
+       }
+
+       return hi556_write_reg(hi556, HI556_REG_TEST_PATTERN,
+                              HI556_REG_VALUE_08BIT, pattern);
+}
+
+static int hi556_set_ctrl(struct v4l2_ctrl *ctrl)
+{
+       struct hi556 *hi556 = container_of(ctrl->handler,
+                                            struct hi556, ctrl_handler);
+       struct i2c_client *client = v4l2_get_subdevdata(&hi556->sd);
+       s64 exposure_max;
+       int ret = 0;
+
+       /* Propagate change of current control to all related controls */
+       if (ctrl->id == V4L2_CID_VBLANK) {
+               /* Update max exposure while meeting expected vblanking */
+               exposure_max = hi556->cur_mode->height + ctrl->val -
+                              HI556_EXPOSURE_MAX_MARGIN;
+               __v4l2_ctrl_modify_range(hi556->exposure,
+                                        hi556->exposure->minimum,
+                                        exposure_max, hi556->exposure->step,
+                                        exposure_max);
+       }
+
+       /* V4L2 controls values will be applied only when power is already up */
+       if (!pm_runtime_get_if_in_use(&client->dev))
+               return 0;
+
+       switch (ctrl->id) {
+       case V4L2_CID_ANALOGUE_GAIN:
+               ret = hi556_write_reg(hi556, HI556_REG_ANALOG_GAIN,
+                                     HI556_REG_VALUE_16BIT, ctrl->val);
+               break;
+
+       case V4L2_CID_DIGITAL_GAIN:
+               ret = hi556_update_digital_gain(hi556, ctrl->val);
+               break;
+
+       case V4L2_CID_EXPOSURE:
+               ret = hi556_write_reg(hi556, HI556_REG_EXPOSURE,
+                                     HI556_REG_VALUE_16BIT, ctrl->val);
+               break;
+
+       case V4L2_CID_VBLANK:
+               /* Update FLL that meets expected vertical blanking */
+               ret = hi556_write_reg(hi556, HI556_REG_FLL,
+                                     HI556_REG_VALUE_16BIT,
+                                     hi556->cur_mode->height + ctrl->val);
+               break;
+
+       case V4L2_CID_TEST_PATTERN:
+               ret = hi556_test_pattern(hi556, ctrl->val);
+               break;
+
+       default:
+               ret = -EINVAL;
+               break;
+       }
+
+       pm_runtime_put(&client->dev);
+
+       return ret;
+}
+
+static const struct v4l2_ctrl_ops hi556_ctrl_ops = {
+       .s_ctrl = hi556_set_ctrl,
+};
+
+static int hi556_init_controls(struct hi556 *hi556)
+{
+       struct v4l2_ctrl_handler *ctrl_hdlr;
+       s64 exposure_max, h_blank;
+       int ret;
+
+       ctrl_hdlr = &hi556->ctrl_handler;
+       ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8);
+       if (ret)
+               return ret;
+
+       ctrl_hdlr->lock = &hi556->mutex;
+       hi556->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, &hi556_ctrl_ops,
+                                                 V4L2_CID_LINK_FREQ,
+                                       ARRAY_SIZE(link_freq_menu_items) - 1,
+                                       0, link_freq_menu_items);
+       if (hi556->link_freq)
+               hi556->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+       hi556->pixel_rate = v4l2_ctrl_new_std
+                           (ctrl_hdlr, &hi556_ctrl_ops,
+                            V4L2_CID_PIXEL_RATE, 0,
+                            to_pixel_rate(HI556_LINK_FREQ_437MHZ_INDEX),
+                            1,
+                            to_pixel_rate(HI556_LINK_FREQ_437MHZ_INDEX));
+       hi556->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &hi556_ctrl_ops,
+                                         V4L2_CID_VBLANK,
+                                         hi556->cur_mode->fll_min -
+                                         hi556->cur_mode->height,
+                                         HI556_FLL_MAX -
+                                         hi556->cur_mode->height, 1,
+                                         hi556->cur_mode->fll_def -
+                                         hi556->cur_mode->height);
+
+       h_blank = hi556->cur_mode->llp - hi556->cur_mode->width;
+
+       hi556->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &hi556_ctrl_ops,
+                                         V4L2_CID_HBLANK, h_blank, h_blank, 1,
+                                         h_blank);
+       if (hi556->hblank)
+               hi556->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
+
+       v4l2_ctrl_new_std(ctrl_hdlr, &hi556_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
+                         HI556_ANAL_GAIN_MIN, HI556_ANAL_GAIN_MAX,
+                         HI556_ANAL_GAIN_STEP, HI556_ANAL_GAIN_MIN);
+       v4l2_ctrl_new_std(ctrl_hdlr, &hi556_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
+                         HI556_DGTL_GAIN_MIN, HI556_DGTL_GAIN_MAX,
+                         HI556_DGTL_GAIN_STEP, HI556_DGTL_GAIN_DEFAULT);
+       exposure_max = hi556->cur_mode->fll_def - HI556_EXPOSURE_MAX_MARGIN;
+       hi556->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &hi556_ctrl_ops,
+                                           V4L2_CID_EXPOSURE,
+                                           HI556_EXPOSURE_MIN, exposure_max,
+                                           HI556_EXPOSURE_STEP,
+                                           exposure_max);
+       v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &hi556_ctrl_ops,
+                                    V4L2_CID_TEST_PATTERN,
+                                    ARRAY_SIZE(hi556_test_pattern_menu) - 1,
+                                    0, 0, hi556_test_pattern_menu);
+       if (ctrl_hdlr->error)
+               return ctrl_hdlr->error;
+
+       hi556->sd.ctrl_handler = ctrl_hdlr;
+
+       return 0;
+}
+
+static void hi556_assign_pad_format(const struct hi556_mode *mode,
+                                   struct v4l2_mbus_framefmt *fmt)
+{
+       fmt->width = mode->width;
+       fmt->height = mode->height;
+       fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
+       fmt->field = V4L2_FIELD_NONE;
+}
+
+static int hi556_start_streaming(struct hi556 *hi556)
+{
+       struct i2c_client *client = v4l2_get_subdevdata(&hi556->sd);
+       const struct hi556_reg_list *reg_list;
+       int link_freq_index, ret;
+
+       link_freq_index = hi556->cur_mode->link_freq_index;
+       reg_list = &link_freq_configs[link_freq_index].reg_list;
+       ret = hi556_write_reg_list(hi556, reg_list);
+       if (ret) {
+               dev_err(&client->dev, "failed to set plls");
+               return ret;
+       }
+
+       reg_list = &hi556->cur_mode->reg_list;
+       ret = hi556_write_reg_list(hi556, reg_list);
+       if (ret) {
+               dev_err(&client->dev, "failed to set mode");
+               return ret;
+       }
+
+       ret = __v4l2_ctrl_handler_setup(hi556->sd.ctrl_handler);
+       if (ret)
+               return ret;
+
+       ret = hi556_write_reg(hi556, HI556_REG_MODE_SELECT,
+                             HI556_REG_VALUE_16BIT, HI556_MODE_STREAMING);
+
+       if (ret) {
+               dev_err(&client->dev, "failed to set stream");
+               return ret;
+       }
+
+       return 0;
+}
+
+static void hi556_stop_streaming(struct hi556 *hi556)
+{
+       struct i2c_client *client = v4l2_get_subdevdata(&hi556->sd);
+
+       if (hi556_write_reg(hi556, HI556_REG_MODE_SELECT,
+                           HI556_REG_VALUE_16BIT, HI556_MODE_STANDBY))
+               dev_err(&client->dev, "failed to set stream");
+}
+
+static int hi556_set_stream(struct v4l2_subdev *sd, int enable)
+{
+       struct hi556 *hi556 = to_hi556(sd);
+       struct i2c_client *client = v4l2_get_subdevdata(sd);
+       int ret = 0;
+
+       if (hi556->streaming == enable)
+               return 0;
+
+       mutex_lock(&hi556->mutex);
+       if (enable) {
+               ret = pm_runtime_get_sync(&client->dev);
+               if (ret < 0) {
+                       pm_runtime_put_noidle(&client->dev);
+                       mutex_unlock(&hi556->mutex);
+                       return ret;
+               }
+
+               ret = hi556_start_streaming(hi556);
+               if (ret) {
+                       enable = 0;
+                       hi556_stop_streaming(hi556);
+                       pm_runtime_put(&client->dev);
+               }
+       } else {
+               hi556_stop_streaming(hi556);
+               pm_runtime_put(&client->dev);
+       }
+
+       hi556->streaming = enable;
+       mutex_unlock(&hi556->mutex);
+
+       return ret;
+}
+
+static int __maybe_unused hi556_suspend(struct device *dev)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct v4l2_subdev *sd = i2c_get_clientdata(client);
+       struct hi556 *hi556 = to_hi556(sd);
+
+       mutex_lock(&hi556->mutex);
+       if (hi556->streaming)
+               hi556_stop_streaming(hi556);
+
+       mutex_unlock(&hi556->mutex);
+
+       return 0;
+}
+
+static int __maybe_unused hi556_resume(struct device *dev)
+{
+       struct i2c_client *client = to_i2c_client(dev);
+       struct v4l2_subdev *sd = i2c_get_clientdata(client);
+       struct hi556 *hi556 = to_hi556(sd);
+       int ret;
+
+       mutex_lock(&hi556->mutex);
+       if (hi556->streaming) {
+               ret = hi556_start_streaming(hi556);
+               if (ret)
+                       goto error;
+       }
+
+       mutex_unlock(&hi556->mutex);
+
+       return 0;
+
+error:
+       hi556_stop_streaming(hi556);
+       hi556->streaming = 0;
+       mutex_unlock(&hi556->mutex);
+       return ret;
+}
+
+static int hi556_set_format(struct v4l2_subdev *sd,
+                           struct v4l2_subdev_pad_config *cfg,
+                           struct v4l2_subdev_format *fmt)
+{
+       struct hi556 *hi556 = to_hi556(sd);
+       const struct hi556_mode *mode;
+       s32 vblank_def, h_blank;
+
+       mode = v4l2_find_nearest_size(supported_modes,
+                                     ARRAY_SIZE(supported_modes), width,
+                                     height, fmt->format.width,
+                                     fmt->format.height);
+
+       mutex_lock(&hi556->mutex);
+       hi556_assign_pad_format(mode, &fmt->format);
+       if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+               *v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format;
+       } else {
+               hi556->cur_mode = mode;
+               __v4l2_ctrl_s_ctrl(hi556->link_freq, mode->link_freq_index);
+               __v4l2_ctrl_s_ctrl_int64(hi556->pixel_rate,
+                                        to_pixel_rate(mode->link_freq_index));
+
+               /* Update limits and set FPS to default */
+               vblank_def = mode->fll_def - mode->height;
+               __v4l2_ctrl_modify_range(hi556->vblank,
+                                        mode->fll_min - mode->height,
+                                        HI556_FLL_MAX - mode->height, 1,
+                                        vblank_def);
+               __v4l2_ctrl_s_ctrl(hi556->vblank, vblank_def);
+
+               h_blank = hi556->cur_mode->llp - hi556->cur_mode->width;
+
+               __v4l2_ctrl_modify_range(hi556->hblank, h_blank, h_blank, 1,
+                                        h_blank);
+       }
+
+       mutex_unlock(&hi556->mutex);
+
+       return 0;
+}
+
+static int hi556_get_format(struct v4l2_subdev *sd,
+                           struct v4l2_subdev_pad_config *cfg,
+                           struct v4l2_subdev_format *fmt)
+{
+       struct hi556 *hi556 = to_hi556(sd);
+
+       mutex_lock(&hi556->mutex);
+       if (fmt->which == V4L2_SUBDEV_FORMAT_TRY)
+               fmt->format = *v4l2_subdev_get_try_format(&hi556->sd, cfg,
+                                                         fmt->pad);
+       else
+               hi556_assign_pad_format(hi556->cur_mode, &fmt->format);
+
+       mutex_unlock(&hi556->mutex);
+
+       return 0;
+}
+
+static int hi556_enum_mbus_code(struct v4l2_subdev *sd,
+                               struct v4l2_subdev_pad_config *cfg,
+                               struct v4l2_subdev_mbus_code_enum *code)
+{
+       if (code->index > 0)
+               return -EINVAL;
+
+       code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
+
+       return 0;
+}
+
+static int hi556_enum_frame_size(struct v4l2_subdev *sd,
+                                struct v4l2_subdev_pad_config *cfg,
+                                struct v4l2_subdev_frame_size_enum *fse)
+{
+       if (fse->index >= ARRAY_SIZE(supported_modes))
+               return -EINVAL;
+
+       if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10)
+               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 hi556_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+       struct hi556 *hi556 = to_hi556(sd);
+
+       mutex_lock(&hi556->mutex);
+       hi556_assign_pad_format(&supported_modes[0],
+                               v4l2_subdev_get_try_format(sd, fh->pad, 0));
+       mutex_unlock(&hi556->mutex);
+
+       return 0;
+}
+
+static const struct v4l2_subdev_video_ops hi556_video_ops = {
+       .s_stream = hi556_set_stream,
+};
+
+static const struct v4l2_subdev_pad_ops hi556_pad_ops = {
+       .set_fmt = hi556_set_format,
+       .get_fmt = hi556_get_format,
+       .enum_mbus_code = hi556_enum_mbus_code,
+       .enum_frame_size = hi556_enum_frame_size,
+};
+
+static const struct v4l2_subdev_ops hi556_subdev_ops = {
+       .video = &hi556_video_ops,
+       .pad = &hi556_pad_ops,
+};
+
+static const struct media_entity_operations hi556_subdev_entity_ops = {
+       .link_validate = v4l2_subdev_link_validate,
+};
+
+static const struct v4l2_subdev_internal_ops hi556_internal_ops = {
+       .open = hi556_open,
+};
+
+static int hi556_identify_module(struct hi556 *hi556)
+{
+       struct i2c_client *client = v4l2_get_subdevdata(&hi556->sd);
+       int ret;
+       u32 val;
+
+       ret = hi556_read_reg(hi556, HI556_REG_CHIP_ID,
+                            HI556_REG_VALUE_16BIT, &val);
+       if (ret)
+               return ret;
+
+       if (val != HI556_CHIP_ID) {
+               dev_err(&client->dev, "chip id mismatch: %x!=%x",
+                       HI556_CHIP_ID, val);
+               return -ENXIO;
+       }
+
+       return 0;
+}
+
+static int hi556_check_hwcfg(struct device *dev)
+{
+       struct fwnode_handle *ep;
+       struct fwnode_handle *fwnode = dev_fwnode(dev);
+       struct v4l2_fwnode_endpoint bus_cfg = {
+               .bus_type = V4L2_MBUS_CSI2_DPHY
+       };
+       u32 mclk;
+       int ret = 0;
+       unsigned int i, j;
+
+       if (!fwnode)
+               return -ENXIO;
+
+       ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk);
+       if (ret) {
+               dev_err(dev, "can't get clock frequency");
+               return ret;
+       }
+
+       if (mclk != HI556_MCLK) {
+               dev_err(dev, "external clock %d is not supported", mclk);
+               return -EINVAL;
+       }
+
+       ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
+       if (!ep)
+               return -ENXIO;
+
+       ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
+       fwnode_handle_put(ep);
+       if (ret)
+               return ret;
+
+       if (bus_cfg.bus.mipi_csi2.num_data_lanes != 2) {
+               dev_err(dev, "number of CSI2 data lanes %d is not supported",
+                       bus_cfg.bus.mipi_csi2.num_data_lanes);
+               ret = -EINVAL;
+               goto check_hwcfg_error;
+       }
+
+       if (!bus_cfg.nr_of_link_frequencies) {
+               dev_err(dev, "no link frequencies defined");
+               ret = -EINVAL;
+               goto check_hwcfg_error;
+       }
+
+       for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); i++) {
+               for (j = 0; j < bus_cfg.nr_of_link_frequencies; j++) {
+                       if (link_freq_menu_items[i] ==
+                               bus_cfg.link_frequencies[j])
+                               break;
+               }
+
+               if (j == bus_cfg.nr_of_link_frequencies) {
+                       dev_err(dev, "no link frequency %lld supported",
+                               link_freq_menu_items[i]);
+                       ret = -EINVAL;
+                       goto check_hwcfg_error;
+               }
+       }
+
+check_hwcfg_error:
+       v4l2_fwnode_endpoint_free(&bus_cfg);
+
+       return ret;
+}
+
+static int hi556_remove(struct i2c_client *client)
+{
+       struct v4l2_subdev *sd = i2c_get_clientdata(client);
+       struct hi556 *hi556 = to_hi556(sd);
+
+       v4l2_async_unregister_subdev(sd);
+       media_entity_cleanup(&sd->entity);
+       v4l2_ctrl_handler_free(sd->ctrl_handler);
+       pm_runtime_disable(&client->dev);
+       mutex_destroy(&hi556->mutex);
+
+       return 0;
+}
+
+static int hi556_probe(struct i2c_client *client)
+{
+       struct hi556 *hi556;
+       int ret;
+
+       ret = hi556_check_hwcfg(&client->dev);
+       if (ret) {
+               dev_err(&client->dev, "failed to check HW configuration: %d",
+                       ret);
+               return ret;
+       }
+
+       hi556 = devm_kzalloc(&client->dev, sizeof(*hi556), GFP_KERNEL);
+       if (!hi556)
+               return -ENOMEM;
+
+       v4l2_i2c_subdev_init(&hi556->sd, client, &hi556_subdev_ops);
+       ret = hi556_identify_module(hi556);
+       if (ret) {
+               dev_err(&client->dev, "failed to find sensor: %d", ret);
+               return ret;
+       }
+
+       mutex_init(&hi556->mutex);
+       hi556->cur_mode = &supported_modes[0];
+       ret = hi556_init_controls(hi556);
+       if (ret) {
+               dev_err(&client->dev, "failed to init controls: %d", ret);
+               goto probe_error_v4l2_ctrl_handler_free;
+       }
+
+       hi556->sd.internal_ops = &hi556_internal_ops;
+       hi556->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+       hi556->sd.entity.ops = &hi556_subdev_entity_ops;
+       hi556->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+       hi556->pad.flags = MEDIA_PAD_FL_SOURCE;
+       ret = media_entity_pads_init(&hi556->sd.entity, 1, &hi556->pad);
+       if (ret) {
+               dev_err(&client->dev, "failed to init entity pads: %d", ret);
+               goto probe_error_v4l2_ctrl_handler_free;
+       }
+
+       ret = v4l2_async_register_subdev_sensor_common(&hi556->sd);
+       if (ret < 0) {
+               dev_err(&client->dev, "failed to register V4L2 subdev: %d",
+                       ret);
+               goto probe_error_media_entity_cleanup;
+       }
+
+       pm_runtime_set_active(&client->dev);
+       pm_runtime_enable(&client->dev);
+       pm_runtime_idle(&client->dev);
+
+       return 0;
+
+probe_error_media_entity_cleanup:
+       media_entity_cleanup(&hi556->sd.entity);
+
+probe_error_v4l2_ctrl_handler_free:
+       v4l2_ctrl_handler_free(hi556->sd.ctrl_handler);
+       mutex_destroy(&hi556->mutex);
+
+       return ret;
+}
+
+static const struct dev_pm_ops hi556_pm_ops = {
+       SET_SYSTEM_SLEEP_PM_OPS(hi556_suspend, hi556_resume)
+};
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id hi556_acpi_ids[] = {
+       {"INT3537"},
+       {}
+};
+
+MODULE_DEVICE_TABLE(acpi, hi556_acpi_ids);
+#endif
+
+static struct i2c_driver hi556_i2c_driver = {
+       .driver = {
+               .name = "hi556",
+               .pm = &hi556_pm_ops,
+               .acpi_match_table = ACPI_PTR(hi556_acpi_ids),
+       },
+       .probe_new = hi556_probe,
+       .remove = hi556_remove,
+};
+
+module_i2c_driver(hi556_i2c_driver);
+
+MODULE_AUTHOR("Shawn Tu <shawnx...@intel.com>");
+MODULE_DESCRIPTION("Hynix HI556 sensor driver");
+MODULE_LICENSE("GPL v2");

_______________________________________________
linuxtv-commits mailing list
linuxtv-commits@linuxtv.org
https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits

Reply via email to