Hi Martin, Thank you for the patch. On Mon, May 31, 2021 at 02:07:35PM +0200, Martin Kepplinger wrote: > The SK Hynix Hi-846 is a 1/4" 8M Pixel CMOS Image Sensor. It supports > usual features like I2C control, CSI-2 for frame data, digital/analog > gain control or test patterns. > > This driver supports the 640x480, 1280x720 and 1632x1224 resolution > modes. It supports runtime PM in order not to draw any unnecessary power. > > The part is also called YACG4D0C9SHC and a datasheet can be found at > https://product.skhynix.com/products/cis/cis.go > > The large sets of partly undocumented register values are for example > found when searching for the hi846_mipi_raw_Sensor.c Android driver. A common story, unfortunately :-S I've done an initial review, I'll likely have more comments on v4, but you should have quite a few things to address already :-) > Signed-off-by: Martin Kepplinger <martin.kepplinger@xxxxxxx> > --- > MAINTAINERS | 6 + > drivers/media/i2c/Kconfig | 13 + > drivers/media/i2c/Makefile | 1 + > drivers/media/i2c/hi846.c | 2138 ++++++++++++++++++++++++++++++++++++ > 4 files changed, 2158 insertions(+) > create mode 100644 drivers/media/i2c/hi846.c > > diff --git a/MAINTAINERS b/MAINTAINERS > index 503fd21901f1..27283b289123 100644 > --- a/MAINTAINERS > +++ b/MAINTAINERS > @@ -8432,6 +8432,12 @@ S: Maintained > T: git git://linuxtv.org/media_tree.git > F: drivers/media/i2c/hi556.c > > +HYNIX HI846 SENSOR DRIVER > +M: Martin Kepplinger <martin.kepplinger@xxxxxxx> > +L: linux-media@xxxxxxxxxxxxxxx > +S: Maintained > +F: drivers/media/i2c/hi846.c > + > Hyper-V/Azure CORE AND DRIVERS > M: "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx> > M: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> > diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig > index 462c0e059754..f8cf5bf8eb68 100644 > --- a/drivers/media/i2c/Kconfig > +++ b/drivers/media/i2c/Kconfig > @@ -738,6 +738,19 @@ config VIDEO_HI556 > To compile this driver as a module, choose M here: the > module will be called hi556. > > +config VIDEO_HI846 > + tristate "Hynix Hi-846 sensor support" > + depends on I2C && VIDEO_V4L2 > + select MEDIA_CONTROLLER > + select VIDEO_V4L2_SUBDEV_API > + select V4L2_FWNODE > + help > + This is a Video4Linux2 sensor driver for the Hynix > + Hi-846 camera. > + > + To compile this driver as a module, choose M here: the > + module will be called hi846. > + > config VIDEO_IMX214 > tristate "Sony IMX214 sensor support" > depends on GPIOLIB && I2C && VIDEO_V4L2 > diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile > index 0c067beca066..1194c5e6708b 100644 > --- a/drivers/media/i2c/Makefile > +++ b/drivers/media/i2c/Makefile > @@ -116,6 +116,7 @@ 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-$(CONFIG_VIDEO_HI846) += hi846.o > obj-$(CONFIG_VIDEO_IMX214) += imx214.o > obj-$(CONFIG_VIDEO_IMX219) += imx219.o > obj-$(CONFIG_VIDEO_IMX258) += imx258.o > diff --git a/drivers/media/i2c/hi846.c b/drivers/media/i2c/hi846.c > new file mode 100644 > index 000000000000..80d1ccb15123 > --- /dev/null > +++ b/drivers/media/i2c/hi846.c > @@ -0,0 +1,2138 @@ > +// SPDX-License-Identifier: GPL-2.0 > +// Copyright (c) 2021 Purism SPC > + > +#include <asm/unaligned.h> > +#include <linux/clk.h> > +#include <linux/delay.h> > +#include <linux/gpio.h> > +#include <linux/i2c.h> > +#include <linux/module.h> > +#include <linux/of_gpio.h> > +#include <linux/of_graph.h> > +#include <linux/regulator/consumer.h> > +#include <linux/pm_runtime.h> > +#include <linux/pm.h> Please keep the headers sorted alphabetically. > +#include <media/v4l2-ctrls.h> > +#include <media/v4l2-device.h> > +#include <media/v4l2-fwnode.h> > + > + > +#define HI846_MEDIA_BUS_FORMAT MEDIA_BUS_FMT_SGBRG10_1X10 > +#define HI846_RGB_DEPTH 10 > +#define DEFAULT_FPS 30 Not used. > + > +/* Frame length lines / Vertical timings */ > +#define HI846_REG_FLL 0x0006 > +#define HI846_FLL_MAX 0xffff > + > +/* Horizontal timing */ > +#define HI846_REG_LLP 0x0008 > +#define HI846_LINE_LENGTH 3800 > + > +#define HI846_REG_BINNING_MODE 0x000c > + > +#define HI846_REG_IMAGE_ORIENTATION 0x000e > + > +#define HI846_REG_UNKNOWN_0022 0x0022 > + > +#define HI846_REG_Y_ADDR_START_VACT_H 0x0026 > +#define HI846_REG_Y_ADDR_START_VACT_L 0x0027 > +#define HI846_REG_UNKNOWN_0028 0x0028 > + > +#define HI846_REG_Y_ADDR_END_VACT_H 0x002c > +#define HI846_REG_Y_ADDR_END_VACT_L 0x002d > + > +#define HI846_REG_Y_ODD_INC_FOBP 0x002e > +#define HI846_REG_Y_EVEN_INC_FOBP 0x002f > + > +#define HI846_REG_Y_ODD_INC_VACT 0x0032 > +#define HI846_REG_Y_EVEN_INC_VACT 0x0033 > + > +#define HI846_REG_GROUPED_PARA_HOLD 0x0046 > + > +#define HI846_REG_TG_ENABLE 0x004c > + > +#define HI846_REG_UNKNOWN_005C 0x005c > + > +#define HI846_REG_UNKNOWN_006A 0x006a > + > +/* Long exposure time. Actually, exposure is a 20 bit value that The kernel coding style starts multi-line comments with '/*' on a line of its own. > + * includes the lower 4 bits of 0x0073 too. only 16 bit are used > + * right now > + */ > +#define HI846_REG_EXPOSURE 0x0074 > +#define HI846_EXPOSURE_MIN 6 > +#define HI846_EXPOSURE_MAX_MARGIN 2 > +#define HI846_EXPOSURE_STEP 1 > + > +/* Analog gain controls from sensor */ > +#define HI846_REG_ANALOG_GAIN 0x0077 > +#define HI846_ANAL_GAIN_MIN 0 > +#define HI846_ANAL_GAIN_MAX 240 > +#define HI846_ANAL_GAIN_STEP 8 > + > +/* Digital gain controls from sensor */ > +#define HI846_REG_MWB_GR_GAIN_H 0x0078 > +#define HI846_REG_MWB_GR_GAIN_L 0x0079 > +#define HI846_REG_MWB_GB_GAIN_H 0x007a > +#define HI846_REG_MWB_GB_GAIN_L 0x007b > +#define HI846_REG_MWB_R_GAIN_H 0x007c > +#define HI846_REG_MWB_R_GAIN_L 0x007d > +#define HI846_REG_MWB_B_GAIN_H 0x007e > +#define HI846_REG_MWB_B_GAIN_L 0x007f > +#define HI846_DGTL_GAIN_MIN 0 > +#define HI846_DGTL_GAIN_MAX 8191 > +#define HI846_DGTL_GAIN_STEP 1 > +#define HI846_DGTL_GAIN_DEFAULT 256 > + > +#define HI846_REG_X_ADDR_START_HACT_H 0x0120 > +#define HI846_REG_X_ADDR_END_HACT_H 0x0122 > + > +#define HI846_REG_UNKNOWN_012A 0x012a > + > +#define HI846_REG_UNKNOWN_0200 0x0200 > + > +#define HI846_REG_UNKNOWN_021C 0x021c > +#define HI846_REG_UNKNOWN_021E 0x021e > + > +#define HI846_REG_UNKNOWN_0402 0x0402 > +#define HI846_REG_UNKNOWN_0404 0x0404 > +#define HI846_REG_UNKNOWN_0408 0x0408 > +#define HI846_REG_UNKNOWN_0410 0x0410 > +#define HI846_REG_UNKNOWN_0412 0x0412 > +#define HI846_REG_UNKNOWN_0414 0x0414 > + > +#define HI846_REG_UNKNOWN_0418 0x0418 > + > +#define HI846_REG_UNKNOWN_051E 0x051e > + > +/* Formatter */ > +#define HI846_REG_X_START_H 0x0804 > +#define HI846_REG_X_START_L 0x0805 > + > +/* MIPI */ > +#define HI846_REG_UNKNOWN_0900 0x0900 > +#define HI846_REG_MIPI_TX_OP_EN 0x0901 > +#define HI846_REG_MIPI_TX_OP_MODE 0x0902 > +#define HI846_RAW8 BIT(5) > + > +#define HI846_REG_UNKNOWN_090C 0x090c > +#define HI846_REG_UNKNOWN_090E 0x090e > + > +#define HI846_REG_UNKNOWN_0914 0x0914 > +#define HI846_REG_TLPX 0x0915 > +#define HI846_REG_TCLK_PREPARE 0x0916 > +#define HI846_REG_TCLK_ZERO 0x0917 > +#define HI846_REG_UNKNOWN_0918 0x0918 > +#define HI846_REG_THS_PREPARE 0x0919 > +#define HI846_REG_THS_ZERO 0x091a > +#define HI846_REG_THS_TRAIL 0x091b > +#define HI846_REG_TCLK_POST 0x091c > +#define HI846_REG_TCLK_TRAIL_MIN 0x091d > +#define HI846_REG_UNKNOWN_091E 0x091e > + > +#define HI846_REG_UNKNOWN_0954 0x0954 > +#define HI846_REG_UNKNOWN_0956 0x0956 > +#define HI846_REG_UNKNOWN_0958 0x0958 > +#define HI846_REG_UNKNOWN_095A 0x095a > + > +/* ISP Common */ > +#define HI846_REG_MODE_SELECT 0x0a00 > +#define HI846_MODE_STANDBY 0x00 > +#define HI846_MODE_STREAMING 0x01 > +#define HI846_REG_FAST_STANDBY_MODE 0x0a02 > +#define HI846_REG_ISP_EN_H 0x0a04 > + > +/* Test Pattern Control */ > +#define HI846_REG_ISP 0x0a05 > +#define HI846_REG_ISP_TPG_EN 0x01 > +#define HI846_REG_TEST_PATTERN 0x020a /* 1-9 */ > + > +#define HI846_REG_UNKNOWN_0A0C 0x0a0c > + > +/* Windowing */ > +#define HI846_REG_X_OUTPUT_SIZE_H 0x0a12 > +#define HI846_REG_X_OUTPUT_SIZE_L 0x0a13 > +#define HI846_REG_Y_OUTPUT_SIZE_H 0x0a14 > +#define HI846_REG_Y_OUTPUT_SIZE_L 0x0a15 > + > +/* ISP Common */ > +#define HI846_REG_PEDESTAL_EN 0x0a1a > + > +#define HI846_REG_UNKNOWN_0A1E 0x0a1e > + > +/* Horizontal Binning Mode */ > +#define HI846_REG_HBIN_MODE 0x0a22 > + > +#define HI846_REG_UNKNOWN_0A24 0x0a24 > +#define HI846_REG_UNKNOWN_0B02 0x0b02 > +#define HI846_REG_UNKNOWN_0B10 0x0b10 > +#define HI846_REG_UNKNOWN_0B12 0x0b12 > +#define HI846_REG_UNKNOWN_0B14 0x0b14 > + > +/* BLC (Black Level Calibration) */ > +#define HI846_REG_BLC_CTL0 0x0c00 > + > +#define HI846_REG_UNKNOWN_0C06 0x0c06 > +#define HI846_REG_UNKNOWN_0C10 0x0c10 > +#define HI846_REG_UNKNOWN_0C12 0x0c12 > +#define HI846_REG_UNKNOWN_0C14 0x0c14 > +#define HI846_REG_UNKNOWN_0C16 0x0c16 > + > +#define HI846_REG_UNKNOWN_0E04 0x0e04 > + > +#define HI846_REG_CHIP_ID_L 0x0f16 > +#define HI846_REG_CHIP_ID_H 0x0f17 > +#define HI846_CHIP_ID_L 0x46 > +#define HI846_CHIP_ID_H 0x08 > + > +#define HI846_REG_UNKNOWN_0F04 0x0f04 > +#define HI846_REG_UNKNOWN_0F08 0x0f08 > + > +/* PLL */ > +#define HI846_REG_PLL_CFG_MIPI2_H 0x0f2a > +#define HI846_REG_PLL_CFG_MIPI2_L 0x0f2b > + > +#define HI846_REG_UNKNOWN_0F30 0x0f30 > +#define HI846_REG_PLL_CFG_RAMP1_H 0x0f32 > +#define HI846_REG_UNKNOWN_0F36 0x0f36 > +#define HI846_REG_PLL_CFG_MIPI1_H 0x0f38 > + > +#define HI846_REG_UNKNOWN_2008 0x2008 > +#define HI846_REG_UNKNOWN_326E 0x326e > + > +struct hi846_reg { > + u16 address; > + u16 val; > +}; > + > +struct hi846_reg_list { > + u32 num_of_regs; > + const struct hi846_reg *regs; > +}; > + > +struct hi846_mode { > + /* Frame width in pixels */ > + u32 width; > + > + /* Frame height in pixels */ > + u32 height; > + > + /* Horizontal timing size */ > + u32 llp; > + > + /* Link frequency needed for this resolution */ > + u8 link_freq_index; > + > + u16 fps; > + > + /* vertical timining size */ > + u16 frame_len; > + > + const struct hi846_reg_list reg_list_config; > + const struct hi846_reg_list reg_list_2lane; > + const struct hi846_reg_list reg_list_4lane; > +}; > + > +#define to_hi846(_sd) container_of(_sd, struct hi846, sd) Could you replace the macro with an inline function ? It provides additional compile-time type checks. > + > +static const struct hi846_reg hi846_init_2lane[] = { > + {HI846_REG_MODE_SELECT, 0x0000}, > + /* regs below are unknown */ > + {0x2000, 0x100A}, Lower-case for hex constants please. > + {0x2002, 0x00FF}, > + {0x2004, 0x0007}, > + {0x2006, 0x3FFF}, > + {0x2008, 0x3FFF}, > + {0x200A, 0xC216}, > + {0x200C, 0x1292}, > + {0x200E, 0xC01A}, > + {0x2010, 0x403D}, > + {0x2012, 0x000E}, > + {0x2014, 0x403E}, > + {0x2016, 0x0B80}, > + {0x2018, 0x403F}, > + {0x201A, 0x82AE}, > + {0x201C, 0x1292}, > + {0x201E, 0xC00C}, > + {0x2020, 0x4130}, > + {0x2022, 0x43E2}, > + {0x2024, 0x0180}, > + {0x2026, 0x4130}, > + {0x2028, 0x7400}, > + {0x202A, 0x5000}, > + {0x202C, 0x0253}, > + {0x202E, 0x0AD1}, > + {0x2030, 0x2360}, > + {0x2032, 0x0009}, > + {0x2034, 0x5020}, > + {0x2036, 0x000B}, > + {0x2038, 0x0002}, > + {0x203A, 0x0044}, > + {0x203C, 0x0016}, > + {0x203E, 0x1792}, > + {0x2040, 0x7002}, > + {0x2042, 0x154F}, > + {0x2044, 0x00D5}, > + {0x2046, 0x000B}, > + {0x2048, 0x0019}, > + {0x204A, 0x1698}, > + {0x204C, 0x000E}, > + {0x204E, 0x099A}, > + {0x2050, 0x0058}, > + {0x2052, 0x7000}, > + {0x2054, 0x1799}, > + {0x2056, 0x0310}, > + {0x2058, 0x03C3}, > + {0x205A, 0x004C}, > + {0x205C, 0x064A}, > + {0x205E, 0x0001}, > + {0x2060, 0x0007}, > + {0x2062, 0x0BC7}, > + {0x2064, 0x0055}, > + {0x2066, 0x7000}, > + {0x2068, 0x1550}, > + {0x206A, 0x158A}, > + {0x206C, 0x0004}, > + {0x206E, 0x1488}, > + {0x2070, 0x7010}, > + {0x2072, 0x1508}, > + {0x2074, 0x0004}, > + {0x2076, 0x0016}, > + {0x2078, 0x03D5}, > + {0x207A, 0x0055}, > + {0x207C, 0x08CA}, > + {0x207E, 0x2019}, > + {0x2080, 0x0007}, > + {0x2082, 0x7057}, > + {0x2084, 0x0FC7}, > + {0x2086, 0x5041}, > + {0x2088, 0x12C8}, > + {0x208A, 0x5060}, > + {0x208C, 0x5080}, > + {0x208E, 0x2084}, > + {0x2090, 0x12C8}, > + {0x2092, 0x7800}, > + {0x2094, 0x0802}, > + {0x2096, 0x040F}, > + {0x2098, 0x1007}, > + {0x209A, 0x0803}, > + {0x209C, 0x080B}, > + {0x209E, 0x3803}, > + {0x20A0, 0x0807}, > + {0x20A2, 0x0404}, > + {0x20A4, 0x0400}, > + {0x20A6, 0xFFFF}, > + {0x20A8, 0xF0B2}, > + {0x20AA, 0xFFEF}, > + {0x20AC, 0x0A84}, > + {0x20AE, 0x1292}, > + {0x20B0, 0xC02E}, > + {0x20B2, 0x4130}, > + {0x23FE, 0xC056}, > + {0x3232, 0xFC0C}, > + {0x3236, 0xFC22}, > + {0x3248, 0xFCA8}, > + {0x326A, 0x8302}, > + {0x326C, 0x830A}, > + {0x326E, 0x0000}, > + {0x32CA, 0xFC28}, > + {0x32CC, 0xC3BC}, > + {0x32CE, 0xC34C}, > + {0x32D0, 0xC35A}, > + {0x32D2, 0xC368}, > + {0x32D4, 0xC376}, > + {0x32D6, 0xC3C2}, > + {0x32D8, 0xC3E6}, > + {0x32DA, 0x0003}, > + {0x32DC, 0x0003}, > + {0x32DE, 0x00C7}, > + {0x32E0, 0x0031}, > + {0x32E2, 0x0031}, > + {0x32E4, 0x0031}, > + {0x32E6, 0xFC28}, > + {0x32E8, 0xC3BC}, > + {0x32EA, 0xC384}, > + {0x32EC, 0xC392}, > + {0x32EE, 0xC3A0}, > + {0x32F0, 0xC3AE}, > + {0x32F2, 0xC3C4}, > + {0x32F4, 0xC3E6}, > + {0x32F6, 0x0003}, > + {0x32F8, 0x0003}, > + {0x32FA, 0x00C7}, > + {0x32FC, 0x0031}, > + {0x32FE, 0x0031}, > + {0x3300, 0x0031}, > + {0x3302, 0x82CA}, > + {0x3304, 0xC164}, > + {0x3306, 0x82E6}, > + {0x3308, 0xC19C}, > + {0x330A, 0x001F}, > + {0x330C, 0x001A}, > + {0x330E, 0x0034}, > + {0x3310, 0x0000}, > + {0x3312, 0x0000}, > + {0x3314, 0xFC94}, > + {0x3316, 0xC3D8}, > + /* regs above are unknown */ > + {HI846_REG_MODE_SELECT, 0x0000}, > + {HI846_REG_UNKNOWN_0E04, 0x0012}, > + {HI846_REG_Y_ODD_INC_FOBP, 0x1111}, > + {HI846_REG_Y_ODD_INC_VACT, 0x1111}, > + {HI846_REG_UNKNOWN_0022, 0x0008}, > + {HI846_REG_Y_ADDR_START_VACT_H, 0x0040}, > + {HI846_REG_UNKNOWN_0028, 0x0017}, > + {HI846_REG_Y_ADDR_END_VACT_H, 0x09CF}, > + {HI846_REG_UNKNOWN_005C, 0x2101}, > + {HI846_REG_FLL, 0x09DE}, > + {HI846_REG_LLP, 0x0ED8}, > + {HI846_REG_IMAGE_ORIENTATION, 0x0100}, > + {HI846_REG_BINNING_MODE, 0x0022}, > + {HI846_REG_HBIN_MODE, 0x0000}, > + {HI846_REG_UNKNOWN_0A24, 0x0000}, > + {HI846_REG_X_START_H, 0x0000}, > + {HI846_REG_X_OUTPUT_SIZE_H, 0x0CC0}, > + {HI846_REG_Y_OUTPUT_SIZE_H, 0x0990}, > + {HI846_REG_EXPOSURE, 0x09D8}, > + {HI846_REG_ANALOG_GAIN, 0x0000}, > + {HI846_REG_GROUPED_PARA_HOLD, 0x0000}, > + {HI846_REG_UNKNOWN_051E, 0x0000}, > + {HI846_REG_UNKNOWN_0200, 0x0400}, > + {HI846_REG_PEDESTAL_EN, 0x0C00}, > + {HI846_REG_UNKNOWN_0A0C, 0x0010}, > + {HI846_REG_UNKNOWN_0A1E, 0x0CCF}, > + {HI846_REG_UNKNOWN_0402, 0x0110}, > + {HI846_REG_UNKNOWN_0404, 0x00F4}, > + {HI846_REG_UNKNOWN_0408, 0x0000}, > + {HI846_REG_UNKNOWN_0410, 0x008D}, > + {HI846_REG_UNKNOWN_0412, 0x011A}, > + {HI846_REG_UNKNOWN_0414, 0x864C}, > + {HI846_REG_UNKNOWN_021C, 0x0003}, > + {HI846_REG_UNKNOWN_021E, 0x0235}, > + {HI846_REG_BLC_CTL0, 0x9150}, > + {HI846_REG_UNKNOWN_0C06, 0x0021}, > + {HI846_REG_UNKNOWN_0C10, 0x0040}, > + {HI846_REG_UNKNOWN_0C12, 0x0040}, > + {HI846_REG_UNKNOWN_0C14, 0x0040}, > + {HI846_REG_UNKNOWN_0C16, 0x0040}, > + {HI846_REG_FAST_STANDBY_MODE, 0x0100}, > + {HI846_REG_ISP_EN_H, 0x014A}, > + {HI846_REG_UNKNOWN_0418, 0x0000}, > + {HI846_REG_UNKNOWN_012A, 0x03B4}, > + {HI846_REG_X_ADDR_START_HACT_H, 0x0046}, > + {HI846_REG_X_ADDR_END_HACT_H, 0x0376}, > + {HI846_REG_UNKNOWN_0B02, 0xE04D}, > + {HI846_REG_UNKNOWN_0B10, 0x6821}, > + {HI846_REG_UNKNOWN_0B12, 0x0120}, > + {HI846_REG_UNKNOWN_0B14, 0x0001}, > + {HI846_REG_UNKNOWN_2008, 0x38FD}, > + {HI846_REG_UNKNOWN_326E, 0x0000}, > + {HI846_REG_UNKNOWN_0900, 0x0320}, > + {HI846_REG_MIPI_TX_OP_MODE, 0xC31A}, > + {HI846_REG_UNKNOWN_0914, 0xC109}, > + {HI846_REG_TCLK_PREPARE, 0x061A}, > + {HI846_REG_UNKNOWN_0918, 0x0306}, > + {HI846_REG_THS_ZERO, 0x0B09}, > + {HI846_REG_TCLK_POST, 0x0C07}, > + {HI846_REG_UNKNOWN_091E, 0x0A00}, > + {HI846_REG_UNKNOWN_090C, 0x042A}, > + {HI846_REG_UNKNOWN_090E, 0x006B}, > + {HI846_REG_UNKNOWN_0954, 0x0089}, > + {HI846_REG_UNKNOWN_0956, 0x0000}, > + {HI846_REG_UNKNOWN_0958, 0xCA00}, > + {HI846_REG_UNKNOWN_095A, 0x9240}, > + {HI846_REG_UNKNOWN_0F08, 0x2F04}, > + {HI846_REG_UNKNOWN_0F30, 0x001F}, > + {HI846_REG_UNKNOWN_0F36, 0x001F}, > + {HI846_REG_UNKNOWN_0F04, 0x3A00}, > + {HI846_REG_PLL_CFG_RAMP1_H, 0x025A}, > + {HI846_REG_PLL_CFG_MIPI1_H, 0x025A}, > + {HI846_REG_PLL_CFG_MIPI2_H, 0x0024}, > + {HI846_REG_UNKNOWN_006A, 0x0100}, > + {HI846_REG_TG_ENABLE, 0x0100}, > +}; > + > +static const struct hi846_reg hi846_init_4lane[] = { > + {0x2000, 0x987A}, > + {0x2002, 0x00FF}, > + {0x2004, 0x0047}, > + {0x2006, 0x3FFF}, > + {0x2008, 0x3FFF}, > + {0x200A, 0xC216}, > + {0x200C, 0x1292}, > + {0x200E, 0xC01A}, > + {0x2010, 0x403D}, > + {0x2012, 0x000E}, > + {0x2014, 0x403E}, > + {0x2016, 0x0B80}, > + {0x2018, 0x403F}, > + {0x201A, 0x82AE}, > + {0x201C, 0x1292}, > + {0x201E, 0xC00C}, > + {0x2020, 0x4130}, > + {0x2022, 0x43E2}, > + {0x2024, 0x0180}, > + {0x2026, 0x4130}, > + {0x2028, 0x7400}, > + {0x202A, 0x5000}, > + {0x202C, 0x0253}, > + {0x202E, 0x0AD1}, > + {0x2030, 0x2360}, > + {0x2032, 0x0009}, > + {0x2034, 0x5020}, > + {0x2036, 0x000B}, > + {0x2038, 0x0002}, > + {0x203A, 0x0044}, > + {0x203C, 0x0016}, > + {0x203E, 0x1792}, > + {0x2040, 0x7002}, > + {0x2042, 0x154F}, > + {0x2044, 0x00D5}, > + {0x2046, 0x000B}, > + {0x2048, 0x0019}, > + {0x204A, 0x1698}, > + {0x204C, 0x000E}, > + {0x204E, 0x099A}, > + {0x2050, 0x0058}, > + {0x2052, 0x7000}, > + {0x2054, 0x1799}, > + {0x2056, 0x0310}, > + {0x2058, 0x03C3}, > + {0x205A, 0x004C}, > + {0x205C, 0x064A}, > + {0x205E, 0x0001}, > + {0x2060, 0x0007}, > + {0x2062, 0x0BC7}, > + {0x2064, 0x0055}, > + {0x2066, 0x7000}, > + {0x2068, 0x1550}, > + {0x206A, 0x158A}, > + {0x206C, 0x0004}, > + {0x206E, 0x1488}, > + {0x2070, 0x7010}, > + {0x2072, 0x1508}, > + {0x2074, 0x0004}, > + {0x2076, 0x0016}, > + {0x2078, 0x03D5}, > + {0x207A, 0x0055}, > + {0x207C, 0x08CA}, > + {0x207E, 0x2019}, > + {0x2080, 0x0007}, > + {0x2082, 0x7057}, > + {0x2084, 0x0FC7}, > + {0x2086, 0x5041}, > + {0x2088, 0x12C8}, > + {0x208A, 0x5060}, > + {0x208C, 0x5080}, > + {0x208E, 0x2084}, > + {0x2090, 0x12C8}, > + {0x2092, 0x7800}, > + {0x2094, 0x0802}, > + {0x2096, 0x040F}, > + {0x2098, 0x1007}, > + {0x209A, 0x0803}, > + {0x209C, 0x080B}, > + {0x209E, 0x3803}, > + {0x20A0, 0x0807}, > + {0x20A2, 0x0404}, > + {0x20A4, 0x0400}, > + {0x20A6, 0xFFFF}, > + {0x20A8, 0xF0B2}, > + {0x20AA, 0xFFEF}, > + {0x20AC, 0x0A84}, > + {0x20AE, 0x1292}, > + {0x20B0, 0xC02E}, > + {0x20B2, 0x4130}, > + {0x20B4, 0xF0B2}, > + {0x20B6, 0xFFBF}, > + {0x20B8, 0x2004}, > + {0x20BA, 0x403F}, > + {0x20BC, 0x00C3}, > + {0x20BE, 0x4FE2}, > + {0x20C0, 0x8318}, > + {0x20C2, 0x43CF}, > + {0x20C4, 0x0000}, > + {0x20C6, 0x9382}, > + {0x20C8, 0xC314}, > + {0x20CA, 0x2003}, > + {0x20CC, 0x12B0}, > + {0x20CE, 0xCAB0}, > + {0x20D0, 0x4130}, > + {0x20D2, 0x12B0}, > + {0x20D4, 0xC90A}, > + {0x20D6, 0x4130}, > + {0x20D8, 0x42D2}, > + {0x20DA, 0x8318}, > + {0x20DC, 0x00C3}, > + {0x20DE, 0x9382}, > + {0x20E0, 0xC314}, > + {0x20E2, 0x2009}, > + {0x20E4, 0x120B}, > + {0x20E6, 0x120A}, > + {0x20E8, 0x1209}, > + {0x20EA, 0x1208}, > + {0x20EC, 0x1207}, > + {0x20EE, 0x1206}, > + {0x20F0, 0x4030}, > + {0x20F2, 0xC15E}, > + {0x20F4, 0x4130}, > + {0x20F6, 0x1292}, > + {0x20F8, 0xC008}, > + {0x20FA, 0x4130}, > + {0x20FC, 0x42D2}, > + {0x20FE, 0x82A1}, > + {0x2100, 0x00C2}, > + {0x2102, 0x1292}, > + {0x2104, 0xC040}, > + {0x2106, 0x4130}, > + {0x2108, 0x1292}, > + {0x210A, 0xC006}, > + {0x210C, 0x42A2}, > + {0x210E, 0x7324}, > + {0x2110, 0x9382}, > + {0x2112, 0xC314}, > + {0x2114, 0x2011}, > + {0x2116, 0x425F}, > + {0x2118, 0x82A1}, > + {0x211A, 0xF25F}, > + {0x211C, 0x00C1}, > + {0x211E, 0xF35F}, > + {0x2120, 0x2406}, > + {0x2122, 0x425F}, > + {0x2124, 0x00C0}, > + {0x2126, 0xF37F}, > + {0x2128, 0x522F}, > + {0x212A, 0x4F82}, > + {0x212C, 0x7324}, > + {0x212E, 0x425F}, > + {0x2130, 0x82D4}, > + {0x2132, 0xF35F}, > + {0x2134, 0x4FC2}, > + {0x2136, 0x01B3}, > + {0x2138, 0x93C2}, > + {0x213A, 0x829F}, > + {0x213C, 0x2421}, > + {0x213E, 0x403E}, > + {0x2140, 0xFFFE}, > + {0x2142, 0x40B2}, > + {0x2144, 0xEC78}, > + {0x2146, 0x831C}, > + {0x2148, 0x40B2}, > + {0x214A, 0xEC78}, > + {0x214C, 0x831E}, > + {0x214E, 0x40B2}, > + {0x2150, 0xEC78}, > + {0x2152, 0x8320}, > + {0x2154, 0xB3D2}, > + {0x2156, 0x008C}, > + {0x2158, 0x2405}, > + {0x215A, 0x4E0F}, > + {0x215C, 0x503F}, > + {0x215E, 0xFFD8}, > + {0x2160, 0x4F82}, > + {0x2162, 0x831C}, > + {0x2164, 0x90F2}, > + {0x2166, 0x0003}, > + {0x2168, 0x008C}, > + {0x216A, 0x2401}, > + {0x216C, 0x4130}, > + {0x216E, 0x421F}, > + {0x2170, 0x831C}, > + {0x2172, 0x5E0F}, > + {0x2174, 0x4F82}, > + {0x2176, 0x831E}, > + {0x2178, 0x5E0F}, > + {0x217A, 0x4F82}, > + {0x217C, 0x8320}, > + {0x217E, 0x3FF6}, > + {0x2180, 0x432E}, > + {0x2182, 0x3FDF}, > + {0x2184, 0x421F}, > + {0x2186, 0x7100}, > + {0x2188, 0x4F0E}, > + {0x218A, 0x503E}, > + {0x218C, 0xFFD8}, > + {0x218E, 0x4E82}, > + {0x2190, 0x7A04}, > + {0x2192, 0x421E}, > + {0x2194, 0x831C}, > + {0x2196, 0x5F0E}, > + {0x2198, 0x4E82}, > + {0x219A, 0x7A06}, > + {0x219C, 0x0B00}, > + {0x219E, 0x7304}, > + {0x21A0, 0x0050}, > + {0x21A2, 0x40B2}, > + {0x21A4, 0xD081}, > + {0x21A6, 0x0B88}, > + {0x21A8, 0x421E}, > + {0x21AA, 0x831E}, > + {0x21AC, 0x5F0E}, > + {0x21AE, 0x4E82}, > + {0x21B0, 0x7A0E}, > + {0x21B2, 0x521F}, > + {0x21B4, 0x8320}, > + {0x21B6, 0x4F82}, > + {0x21B8, 0x7A10}, > + {0x21BA, 0x0B00}, > + {0x21BC, 0x7304}, > + {0x21BE, 0x007A}, > + {0x21C0, 0x40B2}, > + {0x21C2, 0x0081}, > + {0x21C4, 0x0B88}, > + {0x21C6, 0x4392}, > + {0x21C8, 0x7A0A}, > + {0x21CA, 0x0800}, > + {0x21CC, 0x7A0C}, > + {0x21CE, 0x0B00}, > + {0x21D0, 0x7304}, > + {0x21D2, 0x022B}, > + {0x21D4, 0x40B2}, > + {0x21D6, 0xD081}, > + {0x21D8, 0x0B88}, > + {0x21DA, 0x0B00}, > + {0x21DC, 0x7304}, > + {0x21DE, 0x0255}, > + {0x21E0, 0x40B2}, > + {0x21E2, 0x0081}, > + {0x21E4, 0x0B88}, > + {0x21E6, 0x4130}, > + {0x23FE, 0xC056}, > + {0x3232, 0xFC0C}, > + {0x3236, 0xFC22}, > + {0x3238, 0xFCFC}, > + {0x323A, 0xFD84}, > + {0x323C, 0xFD08}, > + {0x3246, 0xFCD8}, > + {0x3248, 0xFCA8}, > + {0x324E, 0xFCB4}, > + {0x326A, 0x8302}, > + {0x326C, 0x830A}, > + {0x326E, 0x0000}, > + {0x32CA, 0xFC28}, > + {0x32CC, 0xC3BC}, > + {0x32CE, 0xC34C}, > + {0x32D0, 0xC35A}, > + {0x32D2, 0xC368}, > + {0x32D4, 0xC376}, > + {0x32D6, 0xC3C2}, > + {0x32D8, 0xC3E6}, > + {0x32DA, 0x0003}, > + {0x32DC, 0x0003}, > + {0x32DE, 0x00C7}, > + {0x32E0, 0x0031}, > + {0x32E2, 0x0031}, > + {0x32E4, 0x0031}, > + {0x32E6, 0xFC28}, > + {0x32E8, 0xC3BC}, > + {0x32EA, 0xC384}, > + {0x32EC, 0xC392}, > + {0x32EE, 0xC3A0}, > + {0x32F0, 0xC3AE}, > + {0x32F2, 0xC3C4}, > + {0x32F4, 0xC3E6}, > + {0x32F6, 0x0003}, > + {0x32F8, 0x0003}, > + {0x32FA, 0x00C7}, > + {0x32FC, 0x0031}, > + {0x32FE, 0x0031}, > + {0x3300, 0x0031}, > + {0x3302, 0x82CA}, > + {0x3304, 0xC164}, > + {0x3306, 0x82E6}, > + {0x3308, 0xC19C}, > + {0x330A, 0x001F}, > + {0x330C, 0x001A}, > + {0x330E, 0x0034}, > + {0x3310, 0x0000}, > + {0x3312, 0x0000}, > + {0x3314, 0xFC94}, > + {0x3316, 0xC3D8}, > + > + {0x0A00, 0x0000}, > + {0x0E04, 0x0012}, > + {0x002E, 0x1111}, > + {0x0032, 0x1111}, > + {0x0022, 0x0008}, > + {0x0026, 0x0040}, > + {0x0028, 0x0017}, > + {0x002C, 0x09CF}, > + {0x005C, 0x2101}, > + {0x0006, 0x09DE}, > + {0x0008, 0x0ED8}, > + {0x000E, 0x0100}, > + {0x000C, 0x0022}, > + {0x0A22, 0x0000}, > + {0x0A24, 0x0000}, > + {0x0804, 0x0000}, > + {0x0A12, 0x0CC0}, > + {0x0A14, 0x0990}, > + {0x0074, 0x09D8}, > + {0x0076, 0x0000}, > + {0x051E, 0x0000}, > + {0x0200, 0x0400}, > + {0x0A1A, 0x0C00}, > + {0x0A0C, 0x0010}, > + {0x0A1E, 0x0CCF}, > + {0x0402, 0x0110}, > + {0x0404, 0x00F4}, > + {0x0408, 0x0000}, > + {0x0410, 0x008D}, > + {0x0412, 0x011A}, > + {0x0414, 0x864C}, > + /* For OTP */ > + {0x021C, 0x0003}, > + {0x021E, 0x0235}, > + /* For OTP */ > + {0x0C00, 0x9950}, > + {0x0C06, 0x0021}, > + {0x0C10, 0x0040}, > + {0x0C12, 0x0040}, > + {0x0C14, 0x0040}, > + {0x0C16, 0x0040}, > + {0x0A02, 0x0100}, > + {0x0A04, 0x015A}, > + {0x0418, 0x0000}, > + {0x0128, 0x0028}, > + {0x012A, 0xFFFF}, > + {0x0120, 0x0046}, > + {0x0122, 0x0376}, > + {0x012C, 0x0020}, > + {0x012E, 0xFFFF}, > + {0x0124, 0x0040}, > + {0x0126, 0x0378}, > + {0x0746, 0x0050}, > + {0x0748, 0x01D5}, > + {0x074A, 0x022B}, > + {0x074C, 0x03B0}, > + {0x0756, 0x043F}, > + {0x0758, 0x3F1D}, > + {0x0B02, 0xE04D}, > + {0x0B10, 0x6821}, > + {0x0B12, 0x0120}, > + {0x0B14, 0x0001}, > + {0x2008, 0x38FD}, > + {0x326E, 0x0000}, > + {0x0900, 0x0300}, > + {0x0902, 0xC319}, > + {0x0914, 0xC109}, > + {0x0916, 0x061A}, > + {0x0918, 0x0407}, > + {0x091A, 0x0A0B}, > + {0x091C, 0x0E08}, > + {0x091E, 0x0A00}, > + {0x090C, 0x0427}, > + {0x090E, 0x0059}, > + {0x0954, 0x0089}, > + {0x0956, 0x0000}, > + {0x0958, 0xCA80}, > + {0x095A, 0x9240}, > + {0x0F08, 0x2F04}, > + {0x0F30, 0x001F}, > + {0x0F36, 0x001F}, > + {0x0F04, 0x3A00}, > + {0x0F32, 0x025A}, > + {0x0F38, 0x025A}, > + {0x0F2A, 0x4124}, > + {0x006A, 0x0100}, > + {0x004C, 0x0100}, > + {0x0044, 0x0001}, > +}; > + > +static const struct hi846_reg mode_640x480_config[] = { > + {HI846_REG_MODE_SELECT, 0x0000}, > + {HI846_REG_Y_ODD_INC_FOBP, 0x7711}, > + {HI846_REG_Y_ODD_INC_VACT, 0x7711}, > + {HI846_REG_Y_ADDR_START_VACT_H, 0x0148}, > + {HI846_REG_Y_ADDR_END_VACT_H, 0x08C7}, > + {HI846_REG_UNKNOWN_005C, 0x4404}, > + {HI846_REG_FLL, 0x0277}, > + {HI846_REG_LLP, 0x0ED8}, > + {HI846_REG_BINNING_MODE, 0x0322}, > + {HI846_REG_HBIN_MODE, 0x0200}, > + {HI846_REG_UNKNOWN_0A24, 0x0000}, > + {HI846_REG_X_START_H, 0x0058}, > + {HI846_REG_X_OUTPUT_SIZE_H, 0x0280}, > + {HI846_REG_Y_OUTPUT_SIZE_H, 0x01E0}, > + > + /* For OTP */ > + {HI846_REG_UNKNOWN_021C, 0x0003}, > + {HI846_REG_UNKNOWN_021E, 0x0235}, > + > + {HI846_REG_ISP_EN_H, 0x017A}, > + {HI846_REG_UNKNOWN_0418, 0x0210}, > + {HI846_REG_UNKNOWN_0B02, 0xE04D}, > + {HI846_REG_UNKNOWN_0B10, 0x7021}, > + {HI846_REG_UNKNOWN_0B12, 0x0120}, > + {HI846_REG_UNKNOWN_0B14, 0x0001}, > + {HI846_REG_UNKNOWN_2008, 0x38FD}, > + {HI846_REG_UNKNOWN_326E, 0x0000}, > +}; > + > +static const struct hi846_reg mode_640x480_mipi_2lane[] = { > + {HI846_REG_UNKNOWN_0900, 0x0300}, > + {HI846_REG_MIPI_TX_OP_MODE, 0x4319}, > + {HI846_REG_UNKNOWN_0914, 0xC105}, > + {HI846_REG_TCLK_PREPARE, 0x030C}, > + {HI846_REG_UNKNOWN_0918, 0x0304}, > + {HI846_REG_THS_ZERO, 0x0708}, > + {HI846_REG_TCLK_POST, 0x0B04}, > + {HI846_REG_UNKNOWN_091E, 0x0500}, > + {HI846_REG_UNKNOWN_090C, 0x0208}, > + {HI846_REG_UNKNOWN_090E, 0x009A}, > + {HI846_REG_UNKNOWN_0954, 0x0089}, > + {HI846_REG_UNKNOWN_0956, 0x0000}, > + {HI846_REG_UNKNOWN_0958, 0xCA80}, > + {HI846_REG_UNKNOWN_095A, 0x9240}, > + {HI846_REG_PLL_CFG_MIPI2_H, 0x4924}, > + {HI846_REG_TG_ENABLE, 0x0100}, > +}; > + > +static const struct hi846_reg mode_1280x720_config[] = { > + {HI846_REG_MODE_SELECT, 0x0000}, > + {HI846_REG_Y_ODD_INC_FOBP, 0x3311}, > + {HI846_REG_Y_ODD_INC_VACT, 0x3311}, > + {HI846_REG_Y_ADDR_START_VACT_H, 0x0238}, > + {HI846_REG_Y_ADDR_END_VACT_H, 0x07D7}, > + {HI846_REG_UNKNOWN_005C, 0x4202}, > + {HI846_REG_FLL, 0x034A}, > + {HI846_REG_LLP, 0x0ED8}, > + {HI846_REG_BINNING_MODE, 0x0122}, > + {HI846_REG_HBIN_MODE, 0x0100}, > + {HI846_REG_UNKNOWN_0A24, 0x0000}, > + {HI846_REG_X_START_H, 0x00B0}, > + {HI846_REG_X_OUTPUT_SIZE_H, 0x0500}, > + {HI846_REG_Y_OUTPUT_SIZE_H, 0x02D0}, > + {HI846_REG_EXPOSURE, 0x0344}, > + > + /* For OTP */ > + {HI846_REG_UNKNOWN_021C, 0x0003}, > + {HI846_REG_UNKNOWN_021E, 0x0235}, > + > + {HI846_REG_ISP_EN_H, 0x017A}, > + {HI846_REG_UNKNOWN_0418, 0x0410}, > + {HI846_REG_UNKNOWN_0B02, 0xE04D}, > + {HI846_REG_UNKNOWN_0B10, 0x6C21}, > + {HI846_REG_UNKNOWN_0B12, 0x0120}, > + {HI846_REG_UNKNOWN_0B14, 0x0005}, > + {HI846_REG_UNKNOWN_2008, 0x38FD}, > + {HI846_REG_UNKNOWN_326E, 0x0000}, > +}; > + > +static const struct hi846_reg mode_1280x720_mipi_2lane[] = { > + {HI846_REG_UNKNOWN_0900, 0x0300}, > + {HI846_REG_MIPI_TX_OP_MODE, 0x4319}, > + {HI846_REG_UNKNOWN_0914, 0xC109}, > + {HI846_REG_TCLK_PREPARE, 0x061A}, > + {HI846_REG_UNKNOWN_0918, 0x0407}, > + {HI846_REG_THS_ZERO, 0x0A0B}, > + {HI846_REG_TCLK_POST, 0x0E08}, > + {HI846_REG_UNKNOWN_091E, 0x0A00}, > + {HI846_REG_UNKNOWN_090C, 0x0427}, > + {HI846_REG_UNKNOWN_090E, 0x0145}, > + {HI846_REG_UNKNOWN_0954, 0x0089}, > + {HI846_REG_UNKNOWN_0956, 0x0000}, > + {HI846_REG_UNKNOWN_0958, 0xCA80}, > + {HI846_REG_UNKNOWN_095A, 0x9240}, > + {HI846_REG_PLL_CFG_MIPI2_H, 0x4124}, > + {HI846_REG_TG_ENABLE, 0x0100}, > +}; > + > +static const struct hi846_reg mode_1280x720_mipi_4lane[] = { > + /* 360Mbps */ > + {HI846_REG_UNKNOWN_0900, 0x0300}, > + {HI846_REG_MIPI_TX_OP_MODE, 0xC319}, > + {HI846_REG_UNKNOWN_0914, 0xC105}, > + {HI846_REG_TCLK_PREPARE, 0x030C}, > + {HI846_REG_UNKNOWN_0918, 0x0304}, > + {HI846_REG_THS_ZERO, 0x0708}, > + {HI846_REG_TCLK_POST, 0x0B04}, > + {HI846_REG_UNKNOWN_091E, 0x0500}, > + {HI846_REG_UNKNOWN_090C, 0x0208}, > + {HI846_REG_UNKNOWN_090E, 0x008A}, > + {HI846_REG_UNKNOWN_0954, 0x0089}, > + {HI846_REG_UNKNOWN_0956, 0x0000}, > + {HI846_REG_UNKNOWN_0958, 0xCA80}, > + {HI846_REG_UNKNOWN_095A, 0x9240}, > + {HI846_REG_PLL_CFG_MIPI2_H, 0x4924}, > + {HI846_REG_TG_ENABLE, 0x0100}, > +}; > + > +static const struct hi846_reg mode_1632x1224_config[] = { > + {HI846_REG_MODE_SELECT, 0x0000}, > + {HI846_REG_Y_ODD_INC_FOBP, 0x3311}, > + {HI846_REG_Y_ODD_INC_VACT, 0x3311}, > + {HI846_REG_Y_ADDR_START_VACT_H, 0x0040}, > + {HI846_REG_Y_ADDR_END_VACT_H, 0x09CF}, > + {HI846_REG_UNKNOWN_005C, 0x4202}, > + {HI846_REG_FLL, 0x09DE}, > + {HI846_REG_LLP, 0x0ED8}, > + {HI846_REG_BINNING_MODE, 0x0122}, > + {HI846_REG_HBIN_MODE, 0x0100}, > + {HI846_REG_UNKNOWN_0A24, 0x0000}, > + {HI846_REG_X_START_H, 0x0000}, > + {HI846_REG_X_OUTPUT_SIZE_H, 0x0660}, > + {HI846_REG_Y_OUTPUT_SIZE_H, 0x04C8}, > + {HI846_REG_EXPOSURE, 0x09D8}, > + {HI846_REG_ISP_EN_H, 0x017A}, > + > + /* For OTP */ > + {HI846_REG_UNKNOWN_021C, 0x0003}, > + {HI846_REG_UNKNOWN_021E, 0x0235}, > + > + {HI846_REG_UNKNOWN_0418, 0x0000}, > + {HI846_REG_UNKNOWN_0B02, 0xE04D}, > + {HI846_REG_UNKNOWN_0B10, 0x6C21}, > + {HI846_REG_UNKNOWN_0B12, 0x0120}, > + {HI846_REG_UNKNOWN_0B14, 0x0005}, > + {HI846_REG_UNKNOWN_2008, 0x38FD}, > + {HI846_REG_UNKNOWN_326E, 0x0000}, > +}; > + > +static const struct hi846_reg mode_1632x1224_mipi_2lane[] = { > + {HI846_REG_UNKNOWN_0900, 0x0300}, > + {HI846_REG_MIPI_TX_OP_MODE, 0x4319}, > + {HI846_REG_UNKNOWN_0914, 0xC109}, > + {HI846_REG_TCLK_PREPARE, 0x061A}, > + {HI846_REG_UNKNOWN_0918, 0x0407}, > + {HI846_REG_THS_ZERO, 0x0A0B}, > + {HI846_REG_TCLK_POST, 0x0E08}, > + {HI846_REG_UNKNOWN_091E, 0x0A00}, > + {HI846_REG_UNKNOWN_090C, 0x0427}, > + {HI846_REG_UNKNOWN_090E, 0x0069}, > + {HI846_REG_UNKNOWN_0954, 0x0089}, > + {HI846_REG_UNKNOWN_0956, 0x0000}, > + {HI846_REG_UNKNOWN_0958, 0xCA80}, > + {HI846_REG_UNKNOWN_095A, 0x9240}, > + {HI846_REG_PLL_CFG_MIPI2_H, 0x4124}, > + {HI846_REG_TG_ENABLE, 0x0100}, > +}; > + > +static const struct hi846_reg mode_1632x1224_mipi_4lane[] = { > + {HI846_REG_UNKNOWN_0900, 0x0300}, > + {HI846_REG_MIPI_TX_OP_MODE, 0xC319}, > + {HI846_REG_UNKNOWN_0914, 0xC105}, > + {HI846_REG_TCLK_PREPARE, 0x030C}, > + {HI846_REG_UNKNOWN_0918, 0x0304}, > + {HI846_REG_THS_ZERO, 0x0708}, > + {HI846_REG_TCLK_POST, 0x0B04}, > + {HI846_REG_UNKNOWN_091E, 0x0500}, > + {HI846_REG_UNKNOWN_090C, 0x0208}, > + {HI846_REG_UNKNOWN_090E, 0x001C}, > + {HI846_REG_UNKNOWN_0954, 0x0089}, > + {HI846_REG_UNKNOWN_0956, 0x0000}, > + {HI846_REG_UNKNOWN_0958, 0xCA80}, > + {HI846_REG_UNKNOWN_095A, 0x9240}, > + {HI846_REG_PLL_CFG_MIPI2_H, 0x4924}, > + {HI846_REG_TG_ENABLE, 0x0100}, > +}; > + > +static const char * const hi846_test_pattern_menu[] = { > + "Disabled", > + "Solid Colour", > + "100% Colour Bars", > + "Fade To Grey Colour Bars", > + "PN9", > + "Gradient Horizontal", > + "Gradient Vertical", > + "Check Board", > + "Slant Pattern", > + "Resolution Pattern", > +}; > + > +#define FREQ_INDEX_640 0 > +#define FREQ_INDEX_1280 1 > +static const s64 hi846_link_freqs[] = { > + [FREQ_INDEX_640] = 80000000, > + [FREQ_INDEX_1280] = 200000000, > +}; > + > +static const struct hi846_reg_list hi846_init_regs_list_2lane = { > + .num_of_regs = ARRAY_SIZE(hi846_init_2lane), > + .regs = hi846_init_2lane, > +}; > + > +static const struct hi846_reg_list hi846_init_regs_list_4lane = { > + .num_of_regs = ARRAY_SIZE(hi846_init_4lane), > + .regs = hi846_init_4lane, > +}; > + > +static const struct hi846_mode supported_modes[] = { > + { > + .width = 640, > + .height = 480, > + .link_freq_index = FREQ_INDEX_640, > + .fps = 120, > + .frame_len = 631, > + .llp = HI846_LINE_LENGTH, > + .reg_list_config = { > + .num_of_regs = ARRAY_SIZE(mode_640x480_config), > + .regs = mode_640x480_config, > + }, > + .reg_list_2lane = { > + .num_of_regs = ARRAY_SIZE(mode_640x480_mipi_2lane), > + .regs = mode_640x480_mipi_2lane, > + }, > + }, > + { > + .width = 1280, > + .height = 720, > + .link_freq_index = FREQ_INDEX_1280, > + .fps = 90, > + .frame_len = 842, > + .llp = HI846_LINE_LENGTH, > + .reg_list_config = { > + .num_of_regs = ARRAY_SIZE(mode_1280x720_config), > + .regs = mode_1280x720_config, > + }, > + .reg_list_2lane = { > + .num_of_regs = ARRAY_SIZE(mode_1280x720_mipi_2lane), > + .regs = mode_1280x720_mipi_2lane, > + }, > + .reg_list_4lane = { > + .num_of_regs = ARRAY_SIZE(mode_1280x720_mipi_4lane), > + .regs = mode_1280x720_mipi_4lane, > + }, > + }, > + { > + .width = 1632, > + .height = 1224, > + .link_freq_index = FREQ_INDEX_1280, > + .fps = 30, > + .frame_len = 2526, > + .llp = HI846_LINE_LENGTH, > + .reg_list_config = { > + .num_of_regs = ARRAY_SIZE(mode_1632x1224_config), > + .regs = mode_1632x1224_config, > + }, > + .reg_list_2lane = { > + .num_of_regs = ARRAY_SIZE(mode_1632x1224_mipi_2lane), > + .regs = mode_1632x1224_mipi_2lane, > + }, > + .reg_list_4lane = { > + .num_of_regs = ARRAY_SIZE(mode_1632x1224_mipi_4lane), > + .regs = mode_1632x1224_mipi_4lane, > + }, > + } > +}; > + > +struct hi846_gpio { > + int gpio; > + int level; > +}; Please use the gpiod_* API, it will handle the level automatically for you. > + > +struct hi846_datafmt { > + u32 code; > + enum v4l2_colorspace colorspace; > +}; > + > +struct hi846 { > + struct hi846_gpio rst_gpio; > + struct regulator *vdd1_regulator; > + struct regulator *vdd_regulator; > + struct clk *clock; > + struct hi846_datafmt *fmt; > + struct v4l2_subdev sd; > + struct media_pad pad; > + struct v4l2_ctrl_handler ctrl_handler; > + u8 nr_lanes; > + > + struct v4l2_ctrl *link_freq; > + struct v4l2_ctrl *pixel_rate; > + struct v4l2_ctrl *vblank; > + struct v4l2_ctrl *hblank; > + struct v4l2_ctrl *exposure; > + > + const struct hi846_mode *cur_mode; > + struct mutex mutex; > + bool streaming; > +}; > + > +static struct hi846_datafmt hi846_colour_fmts[] = { This should be const. > + {HI846_MEDIA_BUS_FORMAT, V4L2_COLORSPACE_RAW}, We usually add a space after { and before }. > +}; > + > +static struct hi846_datafmt *hi846_find_datafmt(u32 code) > +{ > + int i; > + > + for (i = 0; i < ARRAY_SIZE(hi846_colour_fmts); i++) > + if (hi846_colour_fmts[i].code == code) > + return hi846_colour_fmts + i; return &hi846_colour_fmts[i]; would be more customary. There are other similar constructs below. > + > + return NULL; > +} > + > +static inline u8 hi846_get_link_freq_index(struct hi846 *hi846) > +{ > + return hi846->cur_mode->link_freq_index; > +} > + > +static s64 hi846_get_link_freq(struct hi846 *hi846) > +{ > + u8 index = hi846_get_link_freq_index(hi846); > + > + return *(hi846_link_freqs + index); Here for instance. > +} > + > +static u64 hi846_calc_pixel_rate(struct hi846 *hi846) > +{ > + s64 link_freq = hi846_get_link_freq(hi846); > + u64 pixel_rate = link_freq * 2 * hi846->nr_lanes; > + > + do_div(pixel_rate, HI846_RGB_DEPTH); > + > + return pixel_rate; > +} > + > +static int hi846_read_reg(struct hi846 *hi846, u16 reg, u8 *val) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); > + struct i2c_msg msgs[2]; > + u8 addr_buf[2]; > + u8 data_buf[1] = {0}; > + int ret; > + > + 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 = 1; > + msgs[1].buf = &data_buf[0]; > + > + ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); > + if (ret != ARRAY_SIZE(msgs)) { > + dev_err(&client->dev, "i2c read error: %d\n", ret); > + return -EIO; > + } > + > + *val = data_buf[0]; > + > + return 0; > +} > + > +static int hi846_write_reg_16(struct hi846 *hi846, u16 reg, u16 val) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); > + u8 buf[6]; > + > + put_unaligned_be16(reg, buf); > + put_unaligned_be32(val << 8 * 2, buf + 2); > + if (i2c_master_send(client, buf, 4) != 4) > + return -EIO; > + > + return 0; > +} > + > +static int hi846_write_reg_list(struct hi846 *hi846, > + const struct hi846_reg_list *r_list) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); > + unsigned int i; > + int ret; > + > + for (i = 0; i < r_list->num_of_regs; i++) { > + ret = hi846_write_reg_16(hi846, r_list->regs[i].address, > + 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 hi846_write_reg(struct hi846 *hi846, u16 reg, u8 val) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); > + u8 buf[3] = { reg >> 8, reg & 0xff, val }; > + int ret; > + > + struct i2c_msg msg[] = { > + { .addr = client->addr, .flags = 0, > + .len = ARRAY_SIZE(buf), .buf = buf }, > + }; > + > + ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); > + if (ret != ARRAY_SIZE(msg)) { > + dev_err(&client->dev, "i2c write error\n"); > + return -EIO; > + } > + > + return 0; > +} > + > +static int hi846_update_digital_gain(struct hi846 *hi846, u16 d_gain) > +{ > + int ret; > + > + ret = hi846_write_reg_16(hi846, HI846_REG_MWB_GR_GAIN_H, d_gain); > + if (ret) > + return ret; Let's simplify error checks by passing an error status pointer to the write function. You can see how that can be implemented at https://git.linuxtv.org/pinchartl/media.git/tree/drivers/media/i2c/mt9m114.c?h=mt9m114&id=73181111a72ec7171b5c4f84ff3f304ad9a591e6#n681. The code in this function would then become int ret = 0; hi846_write_reg_16(hi846, HI846_REG_MWB_GR_GAIN_H, d_gain, &ret); hi846_write_reg_16(hi846, HI846_REG_MWB_GB_GAIN_H, d_gain, &ret); hi846_write_reg_16(hi846, HI846_REG_MWB_R_GAIN_H, d_gain, &ret); hi846_write_reg_16(hi846, HI846_REG_MWB_B_GAIN_H, d_gain, &ret); return ret; I'd also recommend, given that you have a mix of 8-bit and 16-bit registers, to use the same mechanism as in the mt9m114 driver to simplify writes, with the register macro encoding both the address and the size. > + > + ret = hi846_write_reg_16(hi846, HI846_REG_MWB_GB_GAIN_H, d_gain); > + if (ret) > + return ret; > + > + ret = hi846_write_reg_16(hi846, HI846_REG_MWB_R_GAIN_H, d_gain); > + if (ret) > + return ret; > + > + return hi846_write_reg_16(hi846, HI846_REG_MWB_B_GAIN_H, d_gain); > +} > + > +static int hi846_test_pattern(struct hi846 *hi846, u32 pattern) > +{ > + int ret; > + u8 val; > + > + if (pattern) { > + ret = hi846_read_reg(hi846, HI846_REG_ISP, &val); > + if (ret) > + return ret; > + > + ret = hi846_write_reg(hi846, HI846_REG_ISP, > + val | HI846_REG_ISP_TPG_EN); > + if (ret) > + return ret; > + } > + > + return hi846_write_reg(hi846, HI846_REG_TEST_PATTERN, pattern); > +} > + > +static int hi846_set_ctrl(struct v4l2_ctrl *ctrl) > +{ > + struct hi846 *hi846 = container_of(ctrl->handler, > + struct hi846, ctrl_handler); > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); > + s64 exposure_max; > + int ret = 0; > + u32 shutter, frame_len; > + > + if (!pm_runtime_get_if_in_use(&client->dev)) > + goto out; > + > + /* Propagate change of current control to all related controls */ > + if (ctrl->id == V4L2_CID_VBLANK) { > + /* Update max exposure while meeting expected vblanking */ > + exposure_max = hi846->cur_mode->height + ctrl->val - > + HI846_EXPOSURE_MAX_MARGIN; > + __v4l2_ctrl_modify_range(hi846->exposure, > + hi846->exposure->minimum, > + exposure_max, hi846->exposure->step, > + exposure_max); > + } > + > + switch (ctrl->id) { > + case V4L2_CID_ANALOGUE_GAIN: > + ret = hi846_write_reg(hi846, HI846_REG_ANALOG_GAIN, ctrl->val); > + break; > + > + case V4L2_CID_DIGITAL_GAIN: > + ret = hi846_update_digital_gain(hi846, ctrl->val); > + break; > + > + case V4L2_CID_EXPOSURE: > + shutter = ctrl->val; > + frame_len = hi846->cur_mode->frame_len; > + > + if (shutter > frame_len - 6) { /* margin */ > + frame_len = shutter + 6; > + if (frame_len > 0xffff) { /* max frame len */ > + frame_len = 0xffff; > + } > + } > + > + if (shutter < 6) > + shutter = 6; > + if (shutter > (0xffff - 6)) > + shutter = 0xffff - 6; > + > + ret = hi846_write_reg_16(hi846, HI846_REG_FLL, > + frame_len); > + ret = hi846_write_reg_16(hi846, HI846_REG_EXPOSURE, > + shutter); > + break; > + > + case V4L2_CID_VBLANK: > + /* Update FLL that meets expected vertical blanking */ > + ret = hi846_write_reg_16(hi846, HI846_REG_FLL, > + hi846->cur_mode->height + ctrl->val); > + break; > + case V4L2_CID_TEST_PATTERN: > + ret = hi846_test_pattern(hi846, ctrl->val); > + break; > + > + default: > + ret = -EINVAL; > + break; > + } > + > + pm_runtime_put(&client->dev); > +out: > + return ret; > +} > + > +static const struct v4l2_ctrl_ops hi846_ctrl_ops = { > + .s_ctrl = hi846_set_ctrl, > +}; > + > +static int hi846_init_controls(struct hi846 *hi846) > +{ > + struct v4l2_ctrl_handler *ctrl_hdlr; > + s64 exposure_max, h_blank; > + int ret; > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); > + > + ctrl_hdlr = &hi846->ctrl_handler; > + ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8); > + if (ret) > + return ret; > + > + ctrl_hdlr->lock = &hi846->mutex; > + > + hi846->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, &hi846_ctrl_ops, > + V4L2_CID_LINK_FREQ, > + ARRAY_SIZE(hi846_link_freqs) - 1, > + 0, hi846_link_freqs); > + if (hi846->link_freq) > + hi846->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; > + > + hi846->pixel_rate = v4l2_ctrl_new_std > + (ctrl_hdlr, &hi846_ctrl_ops, > + V4L2_CID_PIXEL_RATE, 0, > + hi846_calc_pixel_rate(hi846), > + 1, > + hi846_calc_pixel_rate(hi846)); > + hi846->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops, > + V4L2_CID_VBLANK, > + hi846->cur_mode->frame_len - > + hi846->cur_mode->height, > + HI846_FLL_MAX - > + hi846->cur_mode->height, 1, > + hi846->cur_mode->frame_len - > + hi846->cur_mode->height); > + > + h_blank = hi846->cur_mode->llp - hi846->cur_mode->width; > + > + hi846->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops, > + V4L2_CID_HBLANK, h_blank, h_blank, 1, > + h_blank); > + if (hi846->hblank) > + hi846->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; > + > + v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, > + HI846_ANAL_GAIN_MIN, HI846_ANAL_GAIN_MAX, > + HI846_ANAL_GAIN_STEP, HI846_ANAL_GAIN_MIN); > + v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops, V4L2_CID_DIGITAL_GAIN, > + HI846_DGTL_GAIN_MIN, HI846_DGTL_GAIN_MAX, > + HI846_DGTL_GAIN_STEP, HI846_DGTL_GAIN_DEFAULT); > + exposure_max = hi846->cur_mode->frame_len - HI846_EXPOSURE_MAX_MARGIN; > + hi846->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops, > + V4L2_CID_EXPOSURE, > + HI846_EXPOSURE_MIN, exposure_max, > + HI846_EXPOSURE_STEP, > + exposure_max); > + v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &hi846_ctrl_ops, > + V4L2_CID_TEST_PATTERN, > + ARRAY_SIZE(hi846_test_pattern_menu) - 1, > + 0, 0, hi846_test_pattern_menu); > + if (ctrl_hdlr->error) { > + dev_err(&client->dev, "v4l ctrl handler error: %d\n", > + ctrl_hdlr->error); > + return ctrl_hdlr->error; > + } > + > + hi846->sd.ctrl_handler = ctrl_hdlr; > + > + return 0; > +} > + > +static int hi846_set_video_mode(struct hi846 *hi846, int fps) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); > + int frame_length; > + int ret; > + int dummy_lines; > + s64 link_freq = hi846_get_link_freq(hi846); > + > + dev_dbg(&client->dev, "%s: link freq: %lld\n", __func__, > + hi846_get_link_freq(hi846)); > + > + frame_length = do_div(link_freq, do_div(fps, HI846_LINE_LENGTH)); > + dummy_lines = (frame_length > hi846->cur_mode->frame_len) ? > + (frame_length - hi846->cur_mode->frame_len) : 0; > + > + frame_length = hi846->cur_mode->frame_len + dummy_lines; > + > + dev_dbg(&client->dev, "%s: frame length calculated: %d\n", __func__, > + frame_length); > + > + ret = hi846_write_reg_16(hi846, HI846_REG_FLL, frame_length & 0xFFFF); > + ret = hi846_write_reg_16(hi846, HI846_REG_LLP, HI846_LINE_LENGTH & 0xFFFF); > + > + return ret; > +} > + > +static int hi846_start_streaming(struct hi846 *hi846) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); > + int ret = 0; > + u8 val; > + > + if (hi846->nr_lanes == 2) > + ret = hi846_write_reg_list(hi846, &hi846_init_regs_list_2lane); > + else > + ret = hi846_write_reg_list(hi846, &hi846_init_regs_list_4lane); > + if (ret) { > + dev_err(&client->dev, "failed to set plls: %d\n", ret); > + return ret; > + } > + > + ret = hi846_write_reg_list(hi846, &hi846->cur_mode->reg_list_config); > + if (ret) { > + dev_err(&client->dev, "failed to set mode: %d\n", ret); > + return ret; > + } > + > + if (hi846->nr_lanes == 2) { > + if (!&hi846->cur_mode->reg_list_2lane) { > + dev_err(&client->dev, "2 lanes unsupported for this mode\n"); > + return -EINVAL; > + } > + ret = hi846_write_reg_list(hi846, &hi846->cur_mode->reg_list_2lane); > + } else { > + if (!&hi846->cur_mode->reg_list_4lane) { > + dev_err(&client->dev, "4 lanes unsupported for this mode\n"); > + return -EINVAL; > + } > + ret = hi846_write_reg_list(hi846, &hi846->cur_mode->reg_list_4lane); > + } > + if (ret) { > + dev_err(&client->dev, "failed to set mipi mode: %d\n", ret); > + return ret; > + } > + > + hi846_set_video_mode(hi846, hi846->cur_mode->fps); > + > + ret = __v4l2_ctrl_handler_setup(hi846->sd.ctrl_handler); > + if (ret) > + return ret; > + > + /* > + * Reading 0x0034 is purely done for debugging reasons: It is not > + * documented in the DS but only mentioned once: > + * "If 0x0034[2] bit is disabled , Visible pixel width and height is 0." > + * So even though that sounds like we won't see anything, we don't > + * know more about this, so in that case only inform the user but do > + * nothing more. > + */ > + ret = hi846_read_reg(hi846, 0x0034, &val); > + if (ret) > + return ret; > + if (!(val & BIT(2))) > + dev_info(&client->dev, "visible pixel width and height is 0\n"); > + > + ret = hi846_write_reg(hi846, HI846_REG_MODE_SELECT, > + HI846_MODE_STREAMING); > + if (ret) { > + dev_err(&client->dev, "failed to start stream"); > + return ret; > + } > + > + hi846->streaming = 1; > + > + dev_dbg(&client->dev, "%s: started streaming successfully\n", __func__); > + > + return ret; > +} > + > +static void hi846_stop_streaming(struct hi846 *hi846) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); > + > + if (hi846_write_reg(hi846, HI846_REG_MODE_SELECT, HI846_MODE_STANDBY)) > + dev_err(&client->dev, "failed to stop stream"); > + > + hi846->streaming = 0; > +} > + > +static int hi846_set_stream(struct v4l2_subdev *sd, int enable) > +{ > + struct hi846 *hi846 = to_hi846(sd); > + struct i2c_client *client = v4l2_get_subdevdata(sd); > + int ret = 0; > + > + if (hi846->streaming == enable) > + return 0; > + > + mutex_lock(&hi846->mutex); > + > + if (enable) { > + ret = pm_runtime_get_sync(&client->dev); > + if (ret < 0) { > + pm_runtime_put_noidle(&client->dev); > + goto out; > + } > + > + ret = hi846_start_streaming(hi846); > + if (ret) { > + enable = 0; > + hi846_stop_streaming(hi846); > + pm_runtime_put(&client->dev); > + } > + } else { > + hi846_stop_streaming(hi846); > + pm_runtime_put(&client->dev); > + } > + > +out: > + mutex_unlock(&hi846->mutex); > + > + return ret; > +} > + > +static int hi846_regulator_enable(struct hi846 *hi846) > +{ > + int ret = 0; > + > + ret = regulator_enable(hi846->vdd_regulator); > + if (ret) > + return ret; > + > + return regulator_enable(hi846->vdd1_regulator); If this fails, vdd should be disabled. You can use the bulk regulator API to handle this. > +} > + > +static void hi846_regulator_disable(struct hi846 *hi846) > +{ > + if (regulator_is_enabled(hi846->vdd1_regulator)) > + regulator_disable(hi846->vdd1_regulator); Regulator enable/disable calls always need to be balanced, checking if the regulator is enabled before disabling it is most often not correct. > + > + if (regulator_is_enabled(hi846->vdd_regulator)) > + regulator_disable(hi846->vdd_regulator); > +} > + > +static int __maybe_unused hi846_suspend(struct device *dev) > +{ > + struct i2c_client *client = to_i2c_client(dev); > + struct v4l2_subdev *sd = i2c_get_clientdata(client); > + struct hi846 *hi846 = to_hi846(sd); > + > + if (hi846->streaming) > + hi846_stop_streaming(hi846); > + > + if (!IS_ERR(hi846->clock)) Can this happen ? > + clk_disable_unprepare(hi846->clock); > + > + hi846_regulator_disable(hi846); > + > + return 0; > +} > + > +static int __maybe_unused hi846_resume(struct device *dev) > +{ > + struct i2c_client *client = to_i2c_client(dev); > + struct v4l2_subdev *sd = i2c_get_clientdata(client); > + struct hi846 *hi846 = to_hi846(sd); > + int ret; > + > + ret = hi846_regulator_enable(hi846); > + if (ret) { > + dev_err(dev, "enable regulator failed: %d\n", ret); > + return ret; > + } > + > + ret = clk_prepare_enable(hi846->clock); > + if (ret < 0) { > + dev_err(dev, "enable clk failed: %d\n", ret); > + goto error_regulator; > + } > + > + msleep(100); > + > + if (hi846->streaming) { > + ret = hi846_start_streaming(hi846); > + if (ret) { > + dev_err(dev, "%s: start streaming failed: %d\n", > + __func__, ret); > + goto error; > + } > + } > + > + return 0; > + > +error: > + clk_disable_unprepare(hi846->clock); > + > +error_regulator: > + hi846_regulator_disable(hi846); > + > + return ret; > +} > + > +static int hi846_set_format(struct v4l2_subdev *sd, > + struct v4l2_subdev_pad_config *cfg, > + struct v4l2_subdev_format *format) > +{ > + struct hi846 *hi846 = to_hi846(sd); > + struct v4l2_mbus_framefmt *mf = &format->format; > + struct i2c_client *client = v4l2_get_subdevdata(sd); > + struct hi846_datafmt *fmt = hi846_find_datafmt(mf->code); > + u32 tgt_fps; > + s32 vblank_def, h_blank; > + > + if (!fmt) { > + mf->code = hi846_colour_fmts[0].code; > + mf->colorspace = hi846_colour_fmts[0].colorspace; > + fmt = &hi846_colour_fmts[0]; > + } > + > + if (format->which == V4L2_SUBDEV_FORMAT_TRY) { > + *v4l2_subdev_get_try_format(sd, cfg, format->pad) = *mf; > + return 0; > + } > + > + mutex_lock(&hi846->mutex); > + > + if (hi846->streaming) { > + mutex_unlock(&hi846->mutex); > + return -EBUSY; > + } > + > + hi846->fmt = fmt; > + > + hi846->cur_mode = v4l2_find_nearest_size(supported_modes, > + ARRAY_SIZE(supported_modes), width, > + height, mf->width, > + mf->height); > + dev_dbg(&client->dev, "%s: found mode: %dx%d\n", __func__, > + hi846->cur_mode->width, hi846->cur_mode->height); > + > + tgt_fps = hi846->cur_mode->fps; > + dev_dbg(&client->dev, "%s: target fps: %d\n", __func__, tgt_fps); > + > + mf->width = hi846->cur_mode->width; > + mf->height = hi846->cur_mode->height; > + mf->code = HI846_MEDIA_BUS_FORMAT; > + mf->field = V4L2_FIELD_NONE; > + > + __v4l2_ctrl_s_ctrl(hi846->link_freq, hi846_get_link_freq_index(hi846)); > + __v4l2_ctrl_s_ctrl_int64(hi846->pixel_rate, > + hi846_calc_pixel_rate(hi846)); > + > + /* Update limits and set FPS to default */ > + vblank_def = hi846->cur_mode->frame_len - hi846->cur_mode->height; > + __v4l2_ctrl_modify_range(hi846->vblank, > + hi846->cur_mode->frame_len - hi846->cur_mode->height, > + HI846_FLL_MAX - hi846->cur_mode->height, 1, > + vblank_def); > + __v4l2_ctrl_s_ctrl(hi846->vblank, vblank_def); > + > + h_blank = hi846->cur_mode->llp - hi846->cur_mode->width; > + > + __v4l2_ctrl_modify_range(hi846->hblank, h_blank, h_blank, 1, > + h_blank); > + > + dev_dbg(&client->dev, "Set fmt w=%d h=%d code=0x%x colorspace=0x%x\n", > + mf->width, mf->height, > + fmt->code, fmt->colorspace); > + > + mutex_unlock(&hi846->mutex); > + > + return 0; > +} > + > +static int hi846_get_format(struct v4l2_subdev *sd, > + struct v4l2_subdev_pad_config *cfg, > + struct v4l2_subdev_format *format) > +{ > + struct hi846 *hi846 = to_hi846(sd); > + struct v4l2_mbus_framefmt *mf = &format->format; > + struct i2c_client *client = v4l2_get_subdevdata(sd); > + > + if (format->pad) > + return -EINVAL; > + > + if (format->which == V4L2_SUBDEV_FORMAT_TRY) { > + format->format = *v4l2_subdev_get_try_format(&hi846->sd, > + cfg, > + format->pad); > + return 0; > + } > + > + mutex_lock(&hi846->mutex); > + mf->code = HI846_MEDIA_BUS_FORMAT; > + mf->colorspace = V4L2_COLORSPACE_RAW; > + mf->field = V4L2_FIELD_NONE; > + mf->width = hi846->cur_mode->width; > + mf->height = hi846->cur_mode->height; > + mutex_unlock(&hi846->mutex); > + dev_dbg(&client->dev, > + "Get format w=%d h=%d code=0x%x colorspace=0x%x\n", > + mf->width, mf->height, mf->code, mf->colorspace); > + > + return 0; > +} > + > +static int hi846_enum_mbus_code(struct v4l2_subdev *sd, > + struct v4l2_subdev_pad_config *cfg, > + struct v4l2_subdev_mbus_code_enum *code) > +{ > + if (code->pad || code->index > 0) > + return -EINVAL; > + > + code->code = HI846_MEDIA_BUS_FORMAT; > + > + return 0; > +} > + > +static int hi846_enum_frame_size(struct v4l2_subdev *sd, > + struct v4l2_subdev_pad_config *cfg, > + struct v4l2_subdev_frame_size_enum *fse) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(sd); > + > + if (fse->pad || fse->index >= ARRAY_SIZE(supported_modes)) > + return -EINVAL; > + > + if (fse->code != HI846_MEDIA_BUS_FORMAT) { > + dev_err(&client->dev, "frame size enum not matching\n"); > + return -EINVAL; > + } > + > + fse->min_width = supported_modes[fse->index].width; > + fse->max_width = supported_modes[fse->index].width; > + fse->min_height = supported_modes[fse->index].height; > + fse->max_height = supported_modes[fse->index].height; > + > + dev_dbg(&client->dev, "%s: max width: %d max height: %d\n", __func__, > + fse->max_width, fse->max_height); > + > + return 0; > +} > + > +static int hi846_s_power(struct v4l2_subdev *sd, int on) > +{ > + struct hi846 *hi846 = to_hi846(sd); > + struct i2c_client *client = v4l2_get_subdevdata(sd); > + struct device *dev = &client->dev; > + int ret = 0; > + > + mutex_lock(&hi846->mutex); > + if (on) { > + ret = hi846_resume(dev); > + if (ret) > + goto out; > + } else { > + ret = hi846_suspend(dev); > + if (ret) > + goto out; > + } > +out: > + mutex_unlock(&hi846->mutex); > + return ret; > +} > + > +static int hi846_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) > +{ > + struct hi846 *hi846 = to_hi846(sd); > + struct v4l2_mbus_framefmt *mf; > + > + mf = v4l2_subdev_get_try_format(sd, fh->pad, 0); > + > + mutex_lock(&hi846->mutex); > + mf->code = HI846_MEDIA_BUS_FORMAT; > + mf->colorspace = V4L2_COLORSPACE_RAW; > + mf->field = V4L2_FIELD_NONE; > + mf->width = hi846->cur_mode->width; > + mf->height = hi846->cur_mode->height; > + mutex_unlock(&hi846->mutex); > + > + return 0; > +} Initialization of the try format is better performed in the .init_cfg() function, you can then drop .open(). > + > +static const struct v4l2_subdev_video_ops hi846_video_ops = { > + .s_stream = hi846_set_stream, > +}; > + > +static const struct v4l2_subdev_pad_ops hi846_pad_ops = { > + .enum_frame_size = hi846_enum_frame_size, > + .enum_mbus_code = hi846_enum_mbus_code, > + .set_fmt = hi846_set_format, > + .get_fmt = hi846_get_format, Please also implement .get_selection() to allow querying the CROP, CROP_BOUNDS and CROP_DEFAULT. The first one can depend on the current mode, the last two should be fixed. > +}; > + > +static struct v4l2_subdev_core_ops hi846_core_ops = { This should be const. > + .s_power = hi846_s_power, .s_power() is deprecated, power should be controlled at .s_stream() time with runtime PM, and the driver should use the runtime PM autoidle feature. > + .log_status = v4l2_ctrl_subdev_log_status, > +}; > + > +static const struct v4l2_subdev_ops hi846_subdev_ops = { > + .core = &hi846_core_ops, > + .video = &hi846_video_ops, > + .pad = &hi846_pad_ops, > +}; > + > +static const struct media_entity_operations hi846_subdev_entity_ops = { > + .link_validate = v4l2_subdev_link_validate, > +}; > + > +static const struct v4l2_subdev_internal_ops hi846_internal_ops = { > + .open = hi846_open, > +}; > + > +static void hi846_rst_gpio_assert(struct hi846 *hi846, bool on) > +{ > + struct hi846_gpio *gpio = &hi846->rst_gpio; > + > + if (gpio == NULL) > + return; > + > + if (on) > + gpio_set_value(gpio->gpio, gpio->level); > + else > + gpio_set_value(gpio->gpio, !gpio->level); > +} > + > +static int hi846_parse_gpio(struct hi846_gpio *gpio, struct device *dev) > +{ > + struct device_node *node = dev->of_node; > + enum of_gpio_flags flags; > + int ret; > + > + ret = of_get_named_gpio_flags(node, "reset-gpios", 0, &flags); > + if (ret < 0) { > + dev_err(dev, "no reset-gpios provided: %d\n", ret); > + return ret; > + } > + gpio->gpio = ret; > + gpio->level = !(flags & OF_GPIO_ACTIVE_LOW); > + > + return 0; > +} > + > +static int hi846_identify_module(struct hi846 *hi846) > +{ > + struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd); > + int ret; > + u8 hi, lo; > + > + ret = hi846_read_reg(hi846, HI846_REG_CHIP_ID_L, &lo); > + if (ret) > + return ret; > + > + if (lo != HI846_CHIP_ID_L) { > + dev_err(&client->dev, "wrong chip id low byte: %x", lo); > + return -ENXIO; > + } > + > + ret = hi846_read_reg(hi846, HI846_REG_CHIP_ID_H, &hi); > + if (ret) > + return ret; > + > + if (hi != HI846_CHIP_ID_H) { > + dev_err(&client->dev, "wrong chip id high byte: %x", hi); > + return -ENXIO; > + } > + > + dev_info(&client->dev, "chip id %02X %02X using %d mipi lanes\n", hi, lo, > + hi846->nr_lanes); > + > + return 0; > +} > + > +static int hi846_check_hwcfg(struct device *dev, u8 *lanes) > +{ > + struct fwnode_handle *ep; > + struct fwnode_handle *fwnode = dev_fwnode(dev); > + struct v4l2_fwnode_endpoint bus_cfg = { > + .bus_type = V4L2_MBUS_CSI2_DPHY > + }; > + int ret = 0; No need to initialize ret to 0. > + > + if (!fwnode) > + return -ENXIO; Can this happen ? > + > + ep = fwnode_graph_get_next_endpoint(fwnode, NULL); > + if (!ep) An error message would be nice. > + return -ENXIO; > + > + ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); > + fwnode_handle_put(ep); > + if (ret) Same here. > + return ret; > + > + if (bus_cfg.bus.mipi_csi2.num_data_lanes != 2 && > + bus_cfg.bus.mipi_csi2.num_data_lanes != 4) { > + 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; > + } > + > + *lanes = bus_cfg.bus.mipi_csi2.num_data_lanes; > + > +check_hwcfg_error: > + v4l2_fwnode_endpoint_free(&bus_cfg); > + > + return ret; > +} > + > +static int hi846_remove(struct i2c_client *client) > +{ > + struct v4l2_subdev *sd = i2c_get_clientdata(client); > + struct hi846 *hi846 = to_hi846(sd); > + > + v4l2_async_unregister_subdev(sd); > + media_entity_cleanup(&sd->entity); > + v4l2_ctrl_handler_free(sd->ctrl_handler); > + > + pm_runtime_disable(&client->dev); > + if (!pm_runtime_status_suspended(&client->dev)) > + hi846_suspend(&client->dev); > + pm_runtime_set_suspended(&client->dev); > + > + mutex_destroy(&hi846->mutex); > + > + return 0; > +} It's customary to place remove() after probe() (but not required). > + > +static int hi846_probe(struct i2c_client *client) > +{ > + struct hi846 *hi846; > + int ret; > + u8 lanes; > + > + ret = hi846_check_hwcfg(&client->dev, &lanes); > + if (ret) { > + dev_err(&client->dev, "failed to check HW configuration: %d", > + ret); > + return ret; > + } I'd move this after the devm_kzalloc(). The function will then be able to set hi846->nr_lanes directly. I'd also rename it to hi846_parse_dt() or something similar. > + > + hi846 = devm_kzalloc(&client->dev, sizeof(*hi846), GFP_KERNEL); > + if (!hi846) > + return -ENOMEM; > + > + hi846->nr_lanes = lanes; > + > + v4l2_i2c_subdev_init(&hi846->sd, client, &hi846_subdev_ops); Let's acquire all the resources (GPIOs, clocks and regulators) before dealing with subdev initialization. > + > + ret = hi846_parse_gpio(&hi846->rst_gpio, &client->dev); > + if (ret < 0) { > + dev_err(&client->dev, "parse gpio failed: %d\n", ret); > + return ret; > + } > + > + hi846->vdd_regulator = devm_regulator_get(&client->dev, "vdd"); > + if (IS_ERR(hi846->vdd_regulator)) > + dev_warn(&client->dev, "cannot get voltage regulator\n"); > + > + hi846->vdd1_regulator = devm_regulator_get(&client->dev, "vdd1"); Not documented in the DT bindings, and there's no VDD1 supply in the datasheet. > + if (IS_ERR(hi846->vdd1_regulator)) > + dev_warn(&client->dev, "cannot get voltage regulator\n"); > + > + ret = hi846_regulator_enable(hi846); > + if (ret) { > + dev_err(&client->dev, "regulator enable failed: %d\n", ret); > + return ret; > + } And let's move the regualtor enable with the clock prepare below. I'd actually move the regulator enable, clock enable and reset handling to a separate hi846_power_on() function, as you need to do the same here and in hi846_resume(). Same for power off. > + > + hi846->clock = devm_clk_get(hi846->sd.dev, "mclk"); > + if (IS_ERR(hi846->clock)) { > + dev_err(&client->dev, "get clk failed\n"); > + ret = -EPROBE_DEFER; > + goto probe_error_regulator; > + } > + > + ret = clk_prepare_enable(hi846->clock); > + if (ret < 0) > + goto probe_error_regulator; > + > + msleep(100); I see corresponding delay in the datasheet. There's however a 2400 MCLK cycles delay required after deassering RESETB before issuing the first I2C transaction. > + > + hi846_rst_gpio_assert(hi846, true); > + > + ret = hi846_identify_module(hi846); > + if (ret) { > + dev_err(&client->dev, "failed to find sensor: %d", ret); > + goto probe_error_regulator; > + } > + > + mutex_init(&hi846->mutex); > + > + hi846->cur_mode = &supported_modes[0]; > + ret = hi846_init_controls(hi846); > + if (ret) { > + dev_err(&client->dev, "failed to init controls: %d", ret); > + goto probe_error_v4l2_ctrl_handler_free; > + } > + > + hi846->sd.internal_ops = &hi846_internal_ops; > + hi846->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; > + hi846->sd.entity.ops = &hi846_subdev_entity_ops; > + hi846->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; > + hi846->pad.flags = MEDIA_PAD_FL_SOURCE; > + ret = media_entity_pads_init(&hi846->sd.entity, 1, &hi846->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(&hi846->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(&hi846->sd.entity); > + > +probe_error_v4l2_ctrl_handler_free: > + v4l2_ctrl_handler_free(hi846->sd.ctrl_handler); > + mutex_destroy(&hi846->mutex); > + > +probe_error_regulator: > + hi846_regulator_disable(hi846); > + > + return ret; > +} > + > +static UNIVERSAL_DEV_PM_OPS(hi846_pm_ops, hi846_suspend, hi846_resume, NULL); > + > +static const struct of_device_id hi846_of_match[] = { > + { .compatible = "hynix,hi846", }, > + {}, > +}; > +MODULE_DEVICE_TABLE(of, hi846_of_match); > + > +static struct i2c_driver hi846_i2c_driver = { > + .driver = { > + .name = "hi846", > + .pm = &hi846_pm_ops, > + .of_match_table = of_match_ptr(hi846_of_match), > + }, > + .probe_new = hi846_probe, > + .remove = hi846_remove, > +}; > + > +module_i2c_driver(hi846_i2c_driver); > + > +MODULE_AUTHOR("Angus Ainslie <angus@xxxxxxxx>"); > +MODULE_AUTHOR("Martin Kepplinger <martin.kepplinger@xxxxxxx>"); > +MODULE_DESCRIPTION("Hynix HI846 sensor driver"); > +MODULE_LICENSE("GPL v2"); -- Regards, Laurent Pinchart
