Driver for Samsung S5K5BAF UXGA 1/5" 2M CMOS Image Sensor
with embedded SoC ISP.
The driver exposes the sensor as two V4L2 subdevices:
- S5K5BAF-CIS - pure CMOS Image Sensor, fixed 1600x1200 format,
no controls.
- S5K5BAF-ISP - Image Signal Processor, formats up to 1600x1200,
pre/post ISP cropping, downscaling via selection API, controls.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
Hi,
This is the 8th iteration of the patch.
I have applied suggestions from Laurent, Sylwester and Mark, thanks.
One exeception, I have left static struct v4l2_rect s5k5baf_cis_rect
not const due to fact its address is passed to function which could
modify its arguments, of course it never modifies s5k5baf_cis_rect.
Regards
Andrzej
v8
- improved description of data-lanes binding,
- added algorithm caching,
- added comments to functions,
- video bus type checking moved to probe,
- clk_get/put moved to probe,
- moved streaming checking under mutex,
- use proper functions for endian conversion,
- probe returns -EPROBE_DEFER in case it cannot get clock,
- v4l2_async_unregister_subdev is called on remove,
- cosmetic changes
v7
- changed description of 'clock-frequency' DT property
v6
- endpoint node presence is now optional,
- added asynchronous subdev registration support and clock
handling,
- use named gpios in DT bindings
v5
- removed hflip/vflip device tree properties
v4
- GPL changed to GPLv2,
- bitfields replaced by u8,
- cosmetic changes,
- corrected s_stream flow,
- gpio pins are no longer exported,
- added I2C addresses to subdev names,
- CIS subdev registration postponed after
succesfull HW initialization,
- added enums for pads,
- selections are initialized only during probe,
- default resolution changed to 1600x1200,
- state->error pattern removed from few other functions,
- entity link creation moved to registered callback.
v3:
- narrowed state->error usage to i2c and power errors,
- private gain controls replaced by red/blue balance user controls,
- added checks to devicetree gpio node parsing
v2:
- lower-cased driver name,
- removed underscore from regulator names,
- removed platform data code,
- v4l controls grouped in anonymous structs,
- added s5k5baf_clear_error function,
- private controls definitions moved to uapi header file,
- added v4l2-controls.h reservation for private controls,
- corrected subdev registered/unregistered code,
- .log_status sudbev op set to v4l2 helper,
- moved entity link creation to probe routines,
- added cleanup on error to probe function.
---
.../devicetree/bindings/media/samsung-s5k5baf.txt | 58 +
MAINTAINERS | 7 +
drivers/media/i2c/Kconfig | 7 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/s5k5baf.c | 2050 ++++++++++++++++++++
5 files changed, 2123 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/samsung-s5k5baf.txt
create mode 100644 drivers/media/i2c/s5k5baf.c
diff --git a/Documentation/devicetree/bindings/media/samsung-s5k5baf.txt b/Documentation/devicetree/bindings/media/samsung-s5k5baf.txt
new file mode 100644
index 0000000..7704a1e
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/samsung-s5k5baf.txt
@@ -0,0 +1,58 @@
+Samsung S5K5BAF UXGA 1/5" 2M CMOS Image Sensor with embedded SoC ISP
+--------------------------------------------------------------------
+
+Required properties:
+
+- compatible : "samsung,s5k5baf";
+- reg : I2C slave address of the sensor;
+- vdda-supply : analog power supply 2.8V (2.6V to 3.0V);
+- vddreg-supply : regulator input power supply 1.8V (1.7V to 1.9V)
+ or 2.8V (2.6V to 3.0);
+- vddio-supply : I/O power supply 1.8V (1.65V to 1.95V)
+ or 2.8V (2.5V to 3.1V);
+- stbyn-gpios : GPIO connected to STDBYN pin;
+- rstn-gpios : GPIO connected to RSTN pin;
+- clocks : the sensor's master clock specifier (from the common
+ clock bindings);
+- clock-names : must be "mclk";
+
+Optional properties:
+
+- clock-frequency : the frequency at which the "mclk" clock should be
+ configured to operate, in Hz; if this property is not
+ specified default 24 MHz value will be used.
+
+The device node should contain one 'port' child node with one child 'endpoint'
+node, according to the bindings defined in Documentation/devicetree/bindings/
+media/video-interfaces.txt. The following are properties specific to those
+nodes.
+
+endpoint node
+-------------
+
+- data-lanes : (optional) specifies MIPI CSI-2 data lanes as covered in
+ video-interfaces.txt. This sensor doesn't support data lane remapping
+ and physical lane indexes in subsequent elements of the array should
+ have consecutive values.
+
+Example:
+
+s5k5bafx@2d {
+ compatible = "samsung,s5k5baf";
+ reg = <0x2d>;
+ vdda-supply = <&cam_io_en_reg>;
+ vddreg-supply = <&vt_core_15v_reg>;
+ vddio-supply = <&vtcam_reg>;
+ stbyn-gpios = <&gpl2 0 1>;
+ rstn-gpios = <&gpl2 1 1>;
+ clock-names = "mclk";
+ clocks = <&clock_cam 0>;
+ clock-frequency = <24000000>;
+
+ port {
+ s5k5bafx_ep: endpoint {
+ remote-endpoint = <&csis1_ep>;
+ data-lanes = <1>;
+ };
+ };
+};
diff --git a/MAINTAINERS b/MAINTAINERS
index b2618ce..0b8212b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7121,6 +7121,13 @@ L: linux-media@xxxxxxxxxxxxxxx
S: Supported
F: drivers/media/i2c/s5c73m3/*
+SAMSUNG S5K5BAF CAMERA DRIVER
+M: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
+M: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
+L: linux-media@xxxxxxxxxxxxxxx
+S: Supported
+F: drivers/media/i2c/s5k5baf.c
+
SERIAL DRIVERS
M: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
L: linux-serial@xxxxxxxxxxxxxxx
diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig
index d18be19..4b227a7 100644
--- a/drivers/media/i2c/Kconfig
+++ b/drivers/media/i2c/Kconfig
@@ -594,6 +594,13 @@ config VIDEO_S5K4ECGX
This is a V4L2 sensor-level driver for Samsung S5K4ECGX 5M
camera sensor with an embedded SoC image signal processor.
+config VIDEO_S5K5BAF
+ tristate "Samsung S5K5BAF sensor support"
+ depends on I2C && VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
+ ---help---
+ This is a V4L2 sensor-level driver for Samsung S5K5BAF 2M
+ camera sensor with an embedded SoC image signal processor.
+
source "drivers/media/i2c/smiapp/Kconfig"
config VIDEO_S5C73M3
diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile
index 9f462df..b83afff 100644
--- a/drivers/media/i2c/Makefile
+++ b/drivers/media/i2c/Makefile
@@ -67,6 +67,7 @@ obj-$(CONFIG_VIDEO_SR030PC30) += sr030pc30.o
obj-$(CONFIG_VIDEO_NOON010PC30) += noon010pc30.o
obj-$(CONFIG_VIDEO_S5K6AA) += s5k6aa.o
obj-$(CONFIG_VIDEO_S5K4ECGX) += s5k4ecgx.o
+obj-$(CONFIG_VIDEO_S5K5BAF) += s5k5baf.o
obj-$(CONFIG_VIDEO_S5C73M3) += s5c73m3/
obj-$(CONFIG_VIDEO_ADP1653) += adp1653.o
obj-$(CONFIG_VIDEO_AS3645A) += as3645a.o
diff --git a/drivers/media/i2c/s5k5baf.c b/drivers/media/i2c/s5k5baf.c
new file mode 100644
index 0000000..3f2b224
--- /dev/null
+++ b/drivers/media/i2c/s5k5baf.c
@@ -0,0 +1,2050 @@
+/*
+ * Driver for Samsung S5K5BAF UXGA 1/5" 2M CMOS Image Sensor
+ * with embedded SoC ISP.
+ *
+ * Copyright (C) 2013, Samsung Electronics Co., Ltd.
+ * Andrzej Hajda <a.hajda@xxxxxxxxxxx>
+ *
+ * Based on S5K6AA driver authored by Sylwester Nawrocki
+ * Copyright (C) 2013, Samsung Electronics Co., Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/i2c.h>
+#include <linux/media.h>
+#include <linux/module.h>
+#include <linux/of_gpio.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+#include <media/media-entity.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-subdev.h>
+#include <media/v4l2-mediabus.h>
+#include <media/v4l2-of.h>
+
+static int debug;
+module_param(debug, int, 0644);
+
+#define S5K5BAF_DRIVER_NAME "s5k5baf"
+#define S5K5BAF_DEFAULT_MCLK_FREQ 24000000U
+#define S5K5BAF_CLK_NAME "mclk"
+
+#define S5K5BAF_CIS_WIDTH 1600
+#define S5K5BAF_CIS_HEIGHT 1200
+#define S5K5BAF_WIN_WIDTH_MIN 8
+#define S5K5BAF_WIN_HEIGHT_MIN 8
+#define S5K5BAF_GAIN_RED_DEF 127
+#define S5K5BAF_GAIN_GREEN_DEF 95
+#define S5K5BAF_GAIN_BLUE_DEF 180
+/* Default number of MIPI CSI-2 data lanes used */
+#define S5K5BAF_DEF_NUM_LANES 1
+
+#define AHB_MSB_ADDR_PTR 0xfcfc
+
+/*
+ * Register interface pages (the most significant word of the address)
+ */
+#define PAGE_IF_HW 0xd000
+#define PAGE_IF_SW 0x7000
+
+/*
+ * H/W register Interface (PAGE_IF_HW)
+ */
+#define REG_SW_LOAD_COMPLETE 0x0014
+#define REG_CMDWR_PAGE 0x0028
+#define REG_CMDWR_ADDR 0x002a
+#define REG_CMDRD_PAGE 0x002c
+#define REG_CMDRD_ADDR 0x002e
+#define REG_CMD_BUF 0x0f12
+#define REG_SET_HOST_INT 0x1000
+#define REG_CLEAR_HOST_INT 0x1030
+#define REG_PATTERN_SET 0x3100
+#define REG_PATTERN_WIDTH 0x3118
+#define REG_PATTERN_HEIGHT 0x311a
+#define REG_PATTERN_PARAM 0x311c
+
+/*
+ * S/W register interface (PAGE_IF_SW)
+ */
+
+/* Firmware revision information */
+#define REG_FW_APIVER 0x012e
+#define S5K5BAF_FW_APIVER 0x0001
+#define REG_FW_REVISION 0x0130
+#define REG_FW_SENSOR_ID 0x0152
+
+/* Initialization parameters */
+/* Master clock frequency in KHz */
+#define REG_I_INCLK_FREQ_L 0x01b8
+#define REG_I_INCLK_FREQ_H 0x01ba
+#define MIN_MCLK_FREQ_KHZ 6000U
+#define MAX_MCLK_FREQ_KHZ 48000U
+#define REG_I_USE_NPVI_CLOCKS 0x01c6
+#define NPVI_CLOCKS 1
+#define REG_I_USE_NMIPI_CLOCKS 0x01c8
+#define NMIPI_CLOCKS 1
+#define REG_I_BLOCK_INTERNAL_PLL_CALC 0x01ca
+
+/* Clock configurations, n = 0..2. REG_I_* frequency unit is 4 kHz. */
+#define REG_I_OPCLK_4KHZ(n) ((n) * 6 + 0x01cc)
+#define REG_I_MIN_OUTRATE_4KHZ(n) ((n) * 6 + 0x01ce)
+#define REG_I_MAX_OUTRATE_4KHZ(n) ((n) * 6 + 0x01d0)
+#define SCLK_PVI_FREQ 24000
+#define SCLK_MIPI_FREQ 48000
+#define PCLK_MIN_FREQ 6000
+#define PCLK_MAX_FREQ 48000
+#define REG_I_USE_REGS_API 0x01de
+#define REG_I_INIT_PARAMS_UPDATED 0x01e0
+#define REG_I_ERROR_INFO 0x01e2
+
+/* General purpose parameters */
+#define REG_USER_BRIGHTNESS 0x01e4
+#define REG_USER_CONTRAST 0x01e6
+#define REG_USER_SATURATION 0x01e8
+#define REG_USER_SHARPBLUR 0x01ea
+
+#define REG_G_SPEC_EFFECTS 0x01ee
+#define REG_G_ENABLE_PREV 0x01f0
+#define REG_G_ENABLE_PREV_CHG 0x01f2
+#define REG_G_NEW_CFG_SYNC 0x01f8
+#define REG_G_PREVREQ_IN_WIDTH 0x01fa
+#define REG_G_PREVREQ_IN_HEIGHT 0x01fc
+#define REG_G_PREVREQ_IN_XOFFS 0x01fe
+#define REG_G_PREVREQ_IN_YOFFS 0x0200
+#define REG_G_PREVZOOM_IN_WIDTH 0x020a
+#define REG_G_PREVZOOM_IN_HEIGHT 0x020c
+#define REG_G_PREVZOOM_IN_XOFFS 0x020e
+#define REG_G_PREVZOOM_IN_YOFFS 0x0210
+#define REG_G_INPUTS_CHANGE_REQ 0x021a
+#define REG_G_ACTIVE_PREV_CFG 0x021c
+#define REG_G_PREV_CFG_CHG 0x021e
+#define REG_G_PREV_OPEN_AFTER_CH 0x0220
+#define REG_G_PREV_CFG_ERROR 0x0222
+#define CFG_ERROR_RANGE 0x0b
+#define REG_G_PREV_CFG_BYPASS_CHANGED 0x022a
+#define REG_G_ACTUAL_P_FR_TIME 0x023a
+#define REG_G_ACTUAL_P_OUT_RATE 0x023c
+#define REG_G_ACTUAL_C_FR_TIME 0x023e
+#define REG_G_ACTUAL_C_OUT_RATE 0x0240
+
+/* Preview control section. n = 0...4. */
+#define PREG(n, x) ((n) * 0x26 + x)
+#define REG_P_OUT_WIDTH(n) PREG(n, 0x0242)
+#define REG_P_OUT_HEIGHT(n) PREG(n, 0x0244)
+#define REG_P_FMT(n) PREG(n, 0x0246)
+#define REG_P_MAX_OUT_RATE(n) PREG(n, 0x0248)
+#define REG_P_MIN_OUT_RATE(n) PREG(n, 0x024a)
+#define REG_P_PVI_MASK(n) PREG(n, 0x024c)
+#define PVI_MASK_MIPI 0x52
+#define REG_P_CLK_INDEX(n) PREG(n, 0x024e)
+#define CLK_PVI_INDEX 0
+#define CLK_MIPI_INDEX NPVI_CLOCKS
+#define REG_P_FR_RATE_TYPE(n) PREG(n, 0x0250)
+#define FR_RATE_DYNAMIC 0
+#define FR_RATE_FIXED 1
+#define FR_RATE_FIXED_ACCURATE 2
+#define REG_P_FR_RATE_Q_TYPE(n) PREG(n, 0x0252)
+#define FR_RATE_Q_DYNAMIC 0
+#define FR_RATE_Q_BEST_FRRATE 1 /* Binning enabled */
+#define FR_RATE_Q_BEST_QUALITY 2 /* Binning disabled */
+/* Frame period in 0.1 ms units */
+#define REG_P_MAX_FR_TIME(n) PREG(n, 0x0254)
+#define REG_P_MIN_FR_TIME(n) PREG(n, 0x0256)
+#define S5K5BAF_MIN_FR_TIME 333 /* x100 us */
+#define S5K5BAF_MAX_FR_TIME 6500 /* x100 us */
+/* The below 5 registers are for "device correction" values */
+#define REG_P_SATURATION(n) PREG(n, 0x0258)
+#define REG_P_SHARP_BLUR(n) PREG(n, 0x025a)
+#define REG_P_GLAMOUR(n) PREG(n, 0x025c)
+#define REG_P_COLORTEMP(n) PREG(n, 0x025e)
+#define REG_P_GAMMA_INDEX(n) PREG(n, 0x0260)
+#define REG_P_PREV_MIRROR(n) PREG(n, 0x0262)
+#define REG_P_CAP_MIRROR(n) PREG(n, 0x0264)
+#define REG_P_CAP_ROTATION(n) PREG(n, 0x0266)
+
+/* Extended image property controls */
+/* Exposure time in 10 us units */
+#define REG_SF_USR_EXPOSURE_L 0x03bc
+#define REG_SF_USR_EXPOSURE_H 0x03be
+#define REG_SF_USR_EXPOSURE_CHG 0x03c0
+#define REG_SF_USR_TOT_GAIN 0x03c2
+#define REG_SF_USR_TOT_GAIN_CHG 0x03c4
+#define REG_SF_RGAIN 0x03c6
+#define REG_SF_RGAIN_CHG 0x03c8
+#define REG_SF_GGAIN 0x03ca
+#define REG_SF_GGAIN_CHG 0x03cc
+#define REG_SF_BGAIN 0x03ce
+#define REG_SF_BGAIN_CHG 0x03d0
+#define REG_SF_WBGAIN_CHG 0x03d2
+#define REG_SF_FLICKER_QUANT 0x03d4
+#define REG_SF_FLICKER_QUANT_CHG 0x03d6
+
+/* Output interface (parallel/MIPI) setup */
+#define REG_OIF_EN_MIPI_LANES 0x03f2
+#define REG_OIF_EN_PACKETS 0x03f4
+#define EN_PACKETS_CSI2 0xc3
+#define REG_OIF_CFG_CHG 0x03f6
+
+/* Auto-algorithms enable mask */
+#define REG_DBG_AUTOALG_EN 0x03f8
+#define AALG_ALL_EN BIT(0)
+#define AALG_AE_EN BIT(1)
+#define AALG_DIVLEI_EN BIT(2)
+#define AALG_WB_EN BIT(3)
+#define AALG_USE_WB_FOR_ISP BIT(4)
+#define AALG_FLICKER_EN BIT(5)
+#define AALG_FIT_EN BIT(6)
+#define AALG_WRHW_EN BIT(7)
+
+/* Pointers to color correction matrices */
+#define REG_PTR_CCM_HORIZON 0x06d0
+#define REG_PTR_CCM_INCANDESCENT 0x06d4
+#define REG_PTR_CCM_WARM_WHITE 0x06d8
+#define REG_PTR_CCM_COOL_WHITE 0x06dc
+#define REG_PTR_CCM_DL50 0x06e0
+#define REG_PTR_CCM_DL65 0x06e4
+#define REG_PTR_CCM_OUTDOOR 0x06ec
+
+#define REG_ARR_CCM(n) (0x2800 + 36 * (n))
+
+static const char * const s5k5baf_supply_names[] = {
+ "vdda", /* Analog power supply 2.8V (2.6V to 3.0V) */
+ "vddreg", /* Regulator input power supply 1.8V (1.7V to 1.9V)
+ or 2.8V (2.6V to 3.0) */
+ "vddio", /* I/O power supply 1.8V (1.65V to 1.95V)
+ or 2.8V (2.5V to 3.1V) */
+};
+#define S5K5BAF_NUM_SUPPLIES ARRAY_SIZE(s5k5baf_supply_names)
+
+struct s5k5baf_gpio {
+ int gpio;
+ int level;
+};
+
+enum s5k5baf_gpio_id {
+ STBY,
+ RST,
+ GPIO_NUM,
+};
+
+#define PAD_CIS 0
+#define PAD_OUT 1
+#define CIS_PAD_NUM 1
+#define ISP_PAD_NUM 2
+
+struct s5k5baf_pixfmt {
+ enum v4l2_mbus_pixelcode code;
+ u32 colorspace;
+ /* REG_P_FMT(x) register value */
+ u16 reg_p_fmt;
+};
+
+struct s5k5baf_ctrls {
+ struct v4l2_ctrl_handler handler;
+ struct { /* Auto / manual white balance cluster */
+ struct v4l2_ctrl *awb;
+ struct v4l2_ctrl *gain_red;
+ struct v4l2_ctrl *gain_blue;
+ };
+ struct { /* Mirror cluster */
+ struct v4l2_ctrl *hflip;
+ struct v4l2_ctrl *vflip;
+ };
+ struct { /* Auto exposure / manual exposure and gain cluster */
+ struct v4l2_ctrl *auto_exp;
+ struct v4l2_ctrl *exposure;
+ struct v4l2_ctrl *gain;
+ };
+};
+
+struct s5k5baf {
+ struct s5k5baf_gpio gpios[GPIO_NUM];
+ enum v4l2_mbus_type bus_type;
+ u8 nlanes;
+ struct regulator_bulk_data supplies[S5K5BAF_NUM_SUPPLIES];
+
+ struct clk *clock;
+ u32 mclk_frequency;
+
+ struct v4l2_subdev cis_sd;
+ struct media_pad cis_pad;
+
+ struct v4l2_subdev sd;
+ struct media_pad pads[ISP_PAD_NUM];
+
+ /* protects the struct members below */
+ struct mutex lock;
+
+ int error;
+
+ struct v4l2_rect crop_sink;
+ struct v4l2_rect compose;
+ struct v4l2_rect crop_source;
+ /* index to s5k5baf_formats array */
+ int pixfmt;
+ /* actual frame interval in 100us */
+ u16 fiv;
+ /* requested frame interval in 100us */
+ u16 req_fiv;
+ /* cache for REG_DBG_AUTOALG_EN register */
+ u16 auto_alg;
+
+ struct s5k5baf_ctrls ctrls;
+
+ unsigned int streaming:1;
+ unsigned int apply_cfg:1;
+ unsigned int apply_crop:1;
+ unsigned int valid_auto_alg:1;
+ unsigned int power;
+};
+
+static const struct s5k5baf_pixfmt s5k5baf_formats[] = {
+ { V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG, 5 },
+ /* range 16-240 */
+ { V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_REC709, 6 },
+ { V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_JPEG, 0 },
+};
+
+static struct v4l2_rect s5k5baf_cis_rect = {
+ 0, 0, S5K5BAF_CIS_WIDTH, S5K5BAF_CIS_HEIGHT
+};
+
+static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
+{
+ return &container_of(ctrl->handler, struct s5k5baf, ctrls.handler)->sd;
+}
+
+static inline bool s5k5baf_is_cis_subdev(struct v4l2_subdev *sd)
+{
+ return sd->entity.type == MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+}
+
+static inline struct s5k5baf *to_s5k5baf(struct v4l2_subdev *sd)
+{
+ if (s5k5baf_is_cis_subdev(sd))
+ return container_of(sd, struct s5k5baf, cis_sd);
+ else
+ return container_of(sd, struct s5k5baf, sd);
+}
+
+static u16 s5k5baf_i2c_read(struct s5k5baf *state, u16 addr)
+{
+ struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
+ __be16 w, r;
+ struct i2c_msg msg[] = {
+ { .addr = c->addr, .flags = 0,
+ .len = 2, .buf = (u8 *)&w },
+ { .addr = c->addr, .flags = I2C_M_RD,
+ .len = 2, .buf = (u8 *)&r },
+ };
+ int ret;
+
+ if (state->error)
+ return 0;
+
+ w = cpu_to_be16(addr);
+ ret = i2c_transfer(c->adapter, msg, 2);
+ r = be16_to_cpu(r);
+
+ v4l2_dbg(3, debug, c, "i2c_read: 0x%04x : 0x%04x\n", addr, r);
+
+ if (ret != 2) {
+ v4l2_err(c, "i2c_read: error during transfer (%d)\n", ret);
+ state->error = ret;
+ }
+ return r;
+}
+
+static void s5k5baf_i2c_write(struct s5k5baf *state, u16 addr, u16 val)
+{
+ u8 buf[4] = { addr >> 8, addr & 0xFF, val >> 8, val & 0xFF };
+ struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
+ int ret;
+
+ if (state->error)
+ return;
+
+ ret = i2c_master_send(c, buf, 4);
+ v4l2_dbg(3, debug, c, "i2c_write: 0x%04x : 0x%04x\n", addr, val);
+
+ if (ret != 4) {
+ v4l2_err(c, "i2c_write: error during transfer (%d)\n", ret);
+ state->error = ret;
+ }
+}
+
+static u16 s5k5baf_read(struct s5k5baf *state, u16 addr)
+{
+ s5k5baf_i2c_write(state, REG_CMDRD_ADDR, addr);
+ return s5k5baf_i2c_read(state, REG_CMD_BUF);
+}
+
+static void s5k5baf_write(struct s5k5baf *state, u16 addr, u16 val)
+{
+ s5k5baf_i2c_write(state, REG_CMDWR_ADDR, addr);
+ s5k5baf_i2c_write(state, REG_CMD_BUF, val);
+}
+
+static void s5k5baf_write_arr_seq(struct s5k5baf *state, u16 addr,
+ u16 count, const u16 *seq)
+{
+ struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
+ __be16 buf[count + 1];
+ int ret, n;
+
+ s5k5baf_i2c_write(state, REG_CMDWR_ADDR, addr);
+ if (state->error)
+ return;
+
+ buf[0] = __constant_cpu_to_be16(REG_CMD_BUF);
+ for (n = 1; n <= count; ++n)
+ buf[n] = cpu_to_be16(*seq++);
+
+ n *= 2;
+ ret = i2c_master_send(c, (char *)buf, n);
+ v4l2_dbg(3, debug, c, "i2c_write_seq(count=%d): %*ph\n", count,
+ min(2 * count, 64), seq - count);
+
+ if (ret != n) {
+ v4l2_err(c, "i2c_write_seq: error during transfer (%d)\n", ret);
+ state->error = ret;
+ }
+}
+
+#define s5k5baf_write_seq(state, addr, seq...) \
+ s5k5baf_write_arr_seq(state, addr, sizeof((char[]){ seq }), \
+ (const u16 []){ seq });
+
+/* add items count at the beginning of the list */
+#define NSEQ(seq...) sizeof((char[]){ seq }), seq
+
+/*
+ * s5k5baf_write_nseq() - Writes sequences of values to sensor memory via i2c
+ * @nseq: sequence of u16 words in format:
+ * (N, address, value[1]...value[N-1])*,0
+ * Ex.:
+ * u16 seq[] = { NSEQ(0x4000, 1, 1), NSEQ(0x4010, 640, 480), 0 };
+ * ret = s5k5baf_write_nseq(c, seq);
+ */
+static void s5k5baf_write_nseq(struct s5k5baf *state, const u16 *nseq)
+{
+ int count;
+
+ while ((count = *nseq++)) {
+ u16 addr = *nseq++;
+ --count;
+
+ s5k5baf_write_arr_seq(state, addr, count, nseq);
+ nseq += count;
+ }
+}
+
+static void s5k5baf_synchronize(struct s5k5baf *state, int timeout, u16 addr)
+{
+ unsigned long end = jiffies + msecs_to_jiffies(timeout);
+ u16 reg;
+
+ s5k5baf_write(state, addr, 1);
+ do {
+ reg = s5k5baf_read(state, addr);
+ if (state->error || !reg)
+ return;
+ usleep_range(5000, 10000);
+ } while (time_is_after_jiffies(end));
+
+ v4l2_err(&state->sd, "timeout on register synchronize (%#x)\n", addr);
+ state->error = -ETIMEDOUT;
+}
+
+static void s5k5baf_hw_patch(struct s5k5baf *state)
+{
+ static const u16 nseq_patch[] = {
+ NSEQ(0x1668,
+ 0xb5fe, 0x0007, 0x683c, 0x687e, 0x1da5, 0x88a0, 0x2800, 0xd00b,
+ 0x88a8, 0x2800, 0xd008, 0x8820, 0x8829, 0x4288, 0xd301, 0x1a40,
+ 0xe000, 0x1a08, 0x9001, 0xe001, 0x2019, 0x9001, 0x4916, 0x466b,
+ 0x8a48, 0x8118, 0x8a88, 0x8158, 0x4814, 0x8940, 0x0040, 0x2103,
+ 0xf000, 0xf826, 0x88a1, 0x4288, 0xd908, 0x8828, 0x8030, 0x8868,
+ 0x8070, 0x88a8, 0x6038, 0xbcfe, 0xbc08, 0x4718, 0x88a9, 0x4288,
+ 0xd906, 0x8820, 0x8030, 0x8860, 0x8070, 0x88a0, 0x6038, 0xe7f2,
+ 0x9801, 0xa902, 0xf000, 0xf812, 0x0033, 0x0029, 0x9a02, 0x0020,
+ 0xf000, 0xf814, 0x6038, 0xe7e6, 0x1a28, 0x7000, 0x0d64, 0x7000,
+ 0x4778, 0x46c0, 0xf004, 0xe51f, 0xa464, 0x0000, 0x4778, 0x46c0,
+ 0xc000, 0xe59f, 0xff1c, 0xe12f, 0x6009, 0x0000, 0x4778, 0x46c0,
+ 0xc000, 0xe59f, 0xff1c, 0xe12f, 0x622f, 0x0000),
+ NSEQ(0x2080,
+ 0xb510, 0xf000, 0xf8f4, 0xbc10, 0xbc08, 0x4718, 0xb5f0, 0xb08b,
+ 0x0006, 0x2000, 0x9004, 0x6835, 0x6874, 0x68b0, 0x900a, 0x68f0,
+ 0x9009, 0x4f7d, 0x8979, 0x084a, 0x88a8, 0x88a3, 0x4298, 0xd300,
+ 0x0018, 0xf000, 0xf907, 0x9007, 0x0021, 0x0028, 0xaa04, 0xf000,
+ 0xf909, 0x9006, 0x88a8, 0x2800, 0xd102, 0x27ff, 0x1c7f, 0xe047,
+ 0x88a0, 0x2800, 0xd101, 0x2700, 0xe042, 0x8820, 0x466b, 0x8198,
+ 0x8860, 0x81d8, 0x8828, 0x8118, 0x8868, 0x8158, 0xa802, 0xc803,
+ 0xf000, 0xf8f8, 0x9008, 0x8aba, 0x9808, 0x466b, 0x4342, 0x9202,
+ 0x8820, 0x8198, 0x8860, 0x81d8, 0x980a, 0x9903, 0xf000, 0xf8ea,
+ 0x9a02, 0x17d1, 0x0e09, 0x1889, 0x1209, 0x4288, 0xdd1f, 0x8820,
+ 0x466b, 0x8198, 0x8860, 0x81d8, 0x980a, 0x9903, 0xf000, 0xf8da,
+ 0x9001, 0x8828, 0x466b, 0x8118, 0x8868, 0x8158, 0x980a, 0x9902,
+ 0xf000, 0xf8d0, 0x8ab9, 0x9a08, 0x4351, 0x17ca, 0x0e12, 0x1851,
+ 0x120a, 0x9901, 0xf000, 0xf8b6, 0x0407, 0x0c3f, 0xe000, 0x2700,
+ 0x8820, 0x466b, 0xaa05, 0x8198, 0x8860, 0x81d8, 0x8828, 0x8118,
+ 0x8868, 0x8158, 0xa802, 0xc803, 0x003b, 0xf000, 0xf8bb, 0x88a1,
+ 0x88a8, 0x003a, 0xf000, 0xf8be, 0x0004, 0xa804, 0xc803, 0x9a09,
+ 0x9b07, 0xf000, 0xf8af, 0xa806, 0xc805, 0x0021, 0xf000, 0xf8b2,
+ 0x6030, 0xb00b, 0xbcf0, 0xbc08, 0x4718, 0xb5f1, 0x9900, 0x680c,
+ 0x493a, 0x694b, 0x698a, 0x4694, 0x69cd, 0x6a0e, 0x4f38, 0x42bc,
+ 0xd800, 0x0027, 0x4937, 0x6b89, 0x0409, 0x0c09, 0x4a35, 0x1e92,
+ 0x6bd2, 0x0412, 0x0c12, 0x429f, 0xd801, 0x0020, 0xe031, 0x001f,
+ 0x434f, 0x0a3f, 0x42a7, 0xd301, 0x0018, 0xe02a, 0x002b, 0x434b,
+ 0x0a1b, 0x42a3, 0xd303, 0x0220, 0xf000, 0xf88c, 0xe021, 0x0029,
+ 0x4351, 0x0a09, 0x42a1, 0xd301, 0x0028, 0xe01a, 0x0031, 0x4351,
+ 0x0a09, 0x42a1, 0xd304, 0x0220, 0x0011, 0xf000, 0xf87b, 0xe010,
+ 0x491e, 0x8c89, 0x000a, 0x4372, 0x0a12, 0x42a2, 0xd301, 0x0030,
+ 0xe007, 0x4662, 0x434a, 0x0a12, 0x42a2, 0xd302, 0x0220, 0xf000,
+ 0xf869, 0x4b16, 0x4d18, 0x8d99, 0x1fca, 0x3af9, 0xd00a, 0x2001,
+ 0x0240, 0x8468, 0x0220, 0xf000, 0xf85d, 0x9900, 0x6008, 0xbcf8,
+ 0xbc08, 0x4718, 0x8d19, 0x8469, 0x9900, 0x6008, 0xe7f7, 0xb570,
+ 0x2200, 0x490e, 0x480e, 0x2401, 0xf000, 0xf852, 0x0022, 0x490d,
+ 0x480d, 0x2502, 0xf000, 0xf84c, 0x490c, 0x480d, 0x002a, 0xf000,
+ 0xf847, 0xbc70, 0xbc08, 0x4718, 0x0d64, 0x7000, 0x0470, 0x7000,
+ 0xa120, 0x0007, 0x0402, 0x7000, 0x14a0, 0x7000, 0x208d, 0x7000,
+ 0x622f, 0x0000, 0x1669, 0x7000, 0x6445, 0x0000, 0x21ab, 0x7000,
+ 0x2aa9, 0x0000, 0x4778, 0x46c0, 0xc000, 0xe59f, 0xff1c, 0xe12f,
+ 0x5f49, 0x0000, 0x4778, 0x46c0, 0xc000, 0xe59f, 0xff1c, 0xe12f,
+ 0x5fc7, 0x0000, 0x4778, 0x46c0, 0xc000, 0xe59f, 0xff1c, 0xe12f,
+ 0x5457, 0x0000, 0x4778, 0x46c0, 0xc000, 0xe59f, 0xff1c, 0xe12f,
+ 0x5fa3, 0x0000, 0x4778, 0x46c0, 0xc000, 0xe59f, 0xff1c, 0xe12f,
+ 0x51f9, 0x0000, 0x4778, 0x46c0, 0xf004, 0xe51f, 0xa464, 0x0000,
+ 0x4778, 0x46c0, 0xc000, 0xe59f, 0xff1c, 0xe12f, 0xa007, 0x0000,
+ 0x6546, 0x2062, 0x3120, 0x3220, 0x3130, 0x0030, 0xe010, 0x0208,
+ 0x0058, 0x0000),
+ 0
+ };
+
+ s5k5baf_write_nseq(state, nseq_patch);
+}
+
+static void s5k5baf_hw_set_clocks(struct s5k5baf *state)
+{
+ unsigned long mclk = state->mclk_frequency / 1000;
+ u16 status;
+ static const u16 nseq_clk_cfg[] = {
+ NSEQ(REG_I_USE_NPVI_CLOCKS,
+ NPVI_CLOCKS, NMIPI_CLOCKS, 0,
+ SCLK_PVI_FREQ / 4, PCLK_MIN_FREQ / 4, PCLK_MAX_FREQ / 4,
+ SCLK_MIPI_FREQ / 4, PCLK_MIN_FREQ / 4, PCLK_MAX_FREQ / 4),
+ NSEQ(REG_I_USE_REGS_API, 1),
+ 0
+ };
+
+ s5k5baf_write_seq(state, REG_I_INCLK_FREQ_L, mclk & 0xffff, mclk >> 16);
+ s5k5baf_write_nseq(state, nseq_clk_cfg);
+
+ s5k5baf_synchronize(state, 250, REG_I_INIT_PARAMS_UPDATED);
+ status = s5k5baf_read(state, REG_I_ERROR_INFO);
+ if (!state->error && status) {
+ v4l2_err(&state->sd, "error configuring PLL (%d)\n", status);
+ state->error = -EINVAL;
+ }
+}
+
+/* set custom color correction matrices for various illuminations */
+static void s5k5baf_hw_set_ccm(struct s5k5baf *state)
+{
+ static const u16 nseq_cfg[] = {
+ NSEQ(REG_PTR_CCM_HORIZON,
+ REG_ARR_CCM(0), PAGE_IF_SW,
+ REG_ARR_CCM(1), PAGE_IF_SW,
+ REG_ARR_CCM(2), PAGE_IF_SW,
+ REG_ARR_CCM(3), PAGE_IF_SW,
+ REG_ARR_CCM(4), PAGE_IF_SW,
+ REG_ARR_CCM(5), PAGE_IF_SW),
+ NSEQ(REG_PTR_CCM_OUTDOOR,
+ REG_ARR_CCM(6), PAGE_IF_SW),
+ NSEQ(REG_ARR_CCM(0),
+ /* horizon */
+ 0x010d, 0xffa7, 0xfff5, 0x003b, 0x00ef, 0xff38,
+ 0xfe42, 0x0270, 0xff71, 0xfeed, 0x0198, 0x0198,
+ 0xff95, 0xffa3, 0x0260, 0x00ec, 0xff33, 0x00f4,
+ /* incandescent */
+ 0x010d, 0xffa7, 0xfff5, 0x003b, 0x00ef, 0xff38,
+ 0xfe42, 0x0270, 0xff71, 0xfeed, 0x0198, 0x0198,
+ 0xff95, 0xffa3, 0x0260, 0x00ec, 0xff33, 0x00f4,
+ /* warm white */
+ 0x01ea, 0xffb9, 0xffdb, 0x0127, 0x0109, 0xff3c,
+ 0xff2b, 0x021b, 0xff48, 0xff03, 0x0207, 0x0113,
+ 0xffca, 0xff93, 0x016f, 0x0164, 0xff55, 0x0163,
+ /* cool white */
+ 0x01ea, 0xffb9, 0xffdb, 0x0127, 0x0109, 0xff3c,
+ 0xff2b, 0x021b, 0xff48, 0xff03, 0x0207, 0x0113,
+ 0xffca, 0xff93, 0x016f, 0x0164, 0xff55, 0x0163,
+ /* daylight 5000K */
+ 0x0194, 0xffad, 0xfffe, 0x00c5, 0x0103, 0xff5d,
+ 0xfee3, 0x01ae, 0xff27, 0xff18, 0x018f, 0x00c8,
+ 0xffe8, 0xffaa, 0x01c8, 0x0132, 0xff3e, 0x0100,
+ /* daylight 6500K */
+ 0x0194, 0xffad, 0xfffe, 0x00c5, 0x0103, 0xff5d,
+ 0xfee3, 0x01ae, 0xff27, 0xff18, 0x018f, 0x00c8,
+ 0xffe8, 0xffaa, 0x01c8, 0x0132, 0xff3e, 0x0100,
+ /* outdoor */
+ 0x01cc, 0xffc3, 0x0009, 0x00a2, 0x0106, 0xff3f,
+ 0xfed8, 0x01fe, 0xff08, 0xfec7, 0x00f5, 0x0119,
+ 0xffdf, 0x0024, 0x01a8, 0x0170, 0xffad, 0x011b),
+ 0
+ };
+ s5k5baf_write_nseq(state, nseq_cfg);
+}
+
+/* CIS sensor tuning, based on undocumented android driver code */
+static void s5k5baf_hw_set_cis(struct s5k5baf *state)
+{
+ static const u16 nseq_cfg[] = {
+ NSEQ(0xc202, 0x0700),
+ NSEQ(0xf260, 0x0001),
+ NSEQ(0xf414, 0x0030),
+ NSEQ(0xc204, 0x0100),
+ NSEQ(0xf402, 0x0092, 0x007f),
+ NSEQ(0xf700, 0x0040),
+ NSEQ(0xf708,
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
+ 0x0040, 0x0040, 0x0040, 0x0040, 0x0040,
+ 0x0001, 0x0015, 0x0001, 0x0040),
+ NSEQ(0xf48a, 0x0048),
+ NSEQ(0xf10a, 0x008b),
+ NSEQ(0xf900, 0x0067),
+ NSEQ(0xf406, 0x0092, 0x007f, 0x0003, 0x0003, 0x0003),
+ NSEQ(0xf442, 0x0000, 0x0000),
+ NSEQ(0xf448, 0x0000),
+ NSEQ(0xf456, 0x0001, 0x0010, 0x0000),
+ NSEQ(0xf41a, 0x00ff, 0x0003, 0x0030),
+ NSEQ(0xf410, 0x0001, 0x0000),
+ NSEQ(0xf416, 0x0001),
+ NSEQ(0xf424, 0x0000),
+ NSEQ(0xf422, 0x0000),
+ NSEQ(0xf41e, 0x0000),
+ NSEQ(0xf428, 0x0000, 0x0000, 0x0000),
+ NSEQ(0xf430, 0x0000, 0x0000, 0x0008, 0x0005, 0x000f, 0x0001,
+ 0x0040, 0x0040, 0x0010),
+ NSEQ(0xf4d6, 0x0090, 0x0000),
+ NSEQ(0xf47c, 0x000c, 0x0000),
+ NSEQ(0xf49a, 0x0008, 0x0000),
+ NSEQ(0xf4a2, 0x0008, 0x0000),
+ NSEQ(0xf4b2, 0x0013, 0x0000, 0x0013, 0x0000),
+ NSEQ(0xf4aa, 0x009b, 0x00fb, 0x009b, 0x00fb),
+ 0
+ };
+
+ s5k5baf_i2c_write(state, REG_CMDWR_PAGE, PAGE_IF_HW);
+ s5k5baf_write_nseq(state, nseq_cfg);
+ s5k5baf_i2c_write(state, REG_CMDWR_PAGE, PAGE_IF_SW);
+}
+
+static void s5k5baf_hw_sync_cfg(struct s5k5baf *state)
+{
+ s5k5baf_write(state, REG_G_PREV_CFG_CHG, 1);
+ if (state->apply_crop) {
+ s5k5baf_write(state, REG_G_INPUTS_CHANGE_REQ, 1);
+ s5k5baf_write(state, REG_G_PREV_CFG_BYPASS_CHANGED, 1);
+ }
+ s5k5baf_synchronize(state, 500, REG_G_NEW_CFG_SYNC);
+}
+/* Set horizontal and vertical image flipping */
+static void s5k5baf_hw_set_mirror(struct s5k5baf *state)
+{
+ u16 flip = state->ctrls.vflip->val | (state->ctrls.vflip->val << 1);
+
+ s5k5baf_write(state, REG_P_PREV_MIRROR(0), flip);
+ if (state->streaming)
+ s5k5baf_hw_sync_cfg(state);
+}
+
+static void s5k5baf_hw_set_alg(struct s5k5baf *state, u16 alg, bool enable)
+{
+ u16 cur_alg, new_alg;
+
+ if (!state->valid_auto_alg)
+ cur_alg = s5k5baf_read(state, REG_DBG_AUTOALG_EN);
+ else
+ cur_alg = state->auto_alg;
+
+ new_alg = enable ? (cur_alg | alg) : (cur_alg & ~alg);
+
+ if (new_alg != cur_alg)
+ s5k5baf_write(state, REG_DBG_AUTOALG_EN, new_alg);
+
+ if (state->error)
+ return;
+
+ state->valid_auto_alg = 1;
+ state->auto_alg = new_alg;
+}
+
+/* Configure auto/manual white balance and R/G/B gains */
+static void s5k5baf_hw_set_awb(struct s5k5baf *state, int awb)
+{
+ struct s5k5baf_ctrls *ctrls = &state->ctrls;
+
+ if (!awb)
+ s5k5baf_write_seq(state, REG_SF_RGAIN,
+ ctrls->gain_red->val, 1,
+ S5K5BAF_GAIN_GREEN_DEF, 1,
+ ctrls->gain_blue->val, 1,
+ 1);
+
+ s5k5baf_hw_set_alg(state, AALG_WB_EN, awb);
+}
+
+/* Program FW with exposure time, 'exposure' in us units */
+static void s5k5baf_hw_set_user_exposure(struct s5k5baf *state, int exposure)
+{
+ unsigned int time = exposure / 10;
+
+ s5k5baf_write_seq(state, REG_SF_USR_EXPOSURE_L,
+ time & 0xffff, time >> 16, 1);
+}
+
+static void s5k5baf_hw_set_user_gain(struct s5k5baf *state, int gain)
+{
+ s5k5baf_write_seq(state, REG_SF_USR_TOT_GAIN, gain, 1);
+}
+
+/* Set auto/manual exposure and total gain */
+static void s5k5baf_hw_set_auto_exposure(struct s5k5baf *state, int value)
+{
+ if (value == V4L2_EXPOSURE_AUTO) {
+ s5k5baf_hw_set_alg(state, AALG_AE_EN | AALG_DIVLEI_EN, true);
+ } else {
+ unsigned int exp_time = state->ctrls.exposure->val;
+
+ s5k5baf_hw_set_user_exposure(state, exp_time);
+ s5k5baf_hw_set_user_gain(state, state->ctrls.gain->val);
+ s5k5baf_hw_set_alg(state, AALG_AE_EN | AALG_DIVLEI_EN, false);
+ }
+}
+
+static void s5k5baf_hw_set_anti_flicker(struct s5k5baf *state, int v)
+{
+ if (v == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) {
+ s5k5baf_hw_set_alg(state, AALG_FLICKER_EN, true);
+ } else {
+ /* The V4L2_CID_LINE_FREQUENCY control values match
+ * the register values */
+ s5k5baf_write_seq(state, REG_SF_FLICKER_QUANT, v, 1);
+ s5k5baf_hw_set_alg(state, AALG_FLICKER_EN, false);
+ }
+}
+
+static void s5k5baf_hw_set_colorfx(struct s5k5baf *state, int val)
+{
+ static const u16 colorfx[] = {
+ [V4L2_COLORFX_NONE] = 0,
+ [V4L2_COLORFX_BW] = 1,
+ [V4L2_COLORFX_NEGATIVE] = 2,
+ [V4L2_COLORFX_SEPIA] = 3,
+ [V4L2_COLORFX_SKY_BLUE] = 4,
+ [V4L2_COLORFX_SKETCH] = 5,
+ };
+
+ s5k5baf_write(state, REG_G_SPEC_EFFECTS, colorfx[val]);
+}
+
+static int s5k5baf_find_pixfmt(struct v4l2_mbus_framefmt *mf)
+{
+ int i, c = -1;
+
+ for (i = 0; i < ARRAY_SIZE(s5k5baf_formats); i++) {
+ if (mf->colorspace != s5k5baf_formats[i].colorspace)
+ continue;
+ if (mf->code == s5k5baf_formats[i].code)
+ return i;
+ if (c < 0)
+ c = i;
+ }
+ return (c < 0) ? 0 : c;
+}
+
+static int s5k5baf_clear_error(struct s5k5baf *state)
+{
+ int ret = state->error;
+
+ state->error = 0;
+ return ret;
+}
+
+static int s5k5baf_hw_set_video_bus(struct s5k5baf *state)
+{
+ u16 en_pkts;
+
+ if (state->bus_type == V4L2_MBUS_CSI2)
+ en_pkts = EN_PACKETS_CSI2;
+ else
+ en_pkts = 0;
+
+ s5k5baf_write_seq(state, REG_OIF_EN_MIPI_LANES,
+ state->nlanes, en_pkts, 1);
+
+ return s5k5baf_clear_error(state);
+}
+
+static u16 s5k5baf_get_cfg_error(struct s5k5baf *state)
+{
+ u16 err = s5k5baf_read(state, REG_G_PREV_CFG_ERROR);
+ if (err)
+ s5k5baf_write(state, REG_G_PREV_CFG_ERROR, 0);
+ return err;
+}
+
+static void s5k5baf_hw_set_fiv(struct s5k5baf *state, u16 fiv)
+{
+ s5k5baf_write(state, REG_P_MAX_FR_TIME(0), fiv);
+ s5k5baf_hw_sync_cfg(state);
+}
+
+static void s5k5baf_hw_find_min_fiv(struct s5k5baf *state)
+{
+ u16 err, fiv;
+ int n;
+
+ fiv = s5k5baf_read(state, REG_G_ACTUAL_P_FR_TIME);
+ if (state->error)
+ return;
+
+ for (n = 5; n > 0; --n) {
+ s5k5baf_hw_set_fiv(state, fiv);
+ err = s5k5baf_get_cfg_error(state);
+ if (state->error)
+ return;
+ switch (err) {
+ case CFG_ERROR_RANGE:
+ ++fiv;
+ break;
+ case 0:
+ state->fiv = fiv;
+ v4l2_info(&state->sd,
+ "found valid frame interval: %d00us\n", fiv);
+ return;
+ default:
+ v4l2_err(&state->sd,
+ "error setting frame interval: %d\n", err);
+ state->error = -EINVAL;
+ }
+ };
+ v4l2_err(&state->sd, "cannot find correct frame interval\n");
+ state->error = -ERANGE;
+}
+
+static void s5k5baf_hw_validate_cfg(struct s5k5baf *state)
+{
+ u16 err;
+
+ err = s5k5baf_get_cfg_error(state);
+ if (state->error)
+ return;
+
+ switch (err) {
+ case 0:
+ state->apply_cfg = 1;
+ return;
+ case CFG_ERROR_RANGE:
+ s5k5baf_hw_find_min_fiv(state);
+ if (!state->error)
+ state->apply_cfg = 1;
+ return;
+ default:
+ v4l2_err(&state->sd,
+ "error setting format: %d\n", err);
+ state->error = -EINVAL;
+ }
+}
+
+static void s5k5baf_rescale(struct v4l2_rect *r, const struct v4l2_rect *v,
+ const struct v4l2_rect *n,
+ const struct v4l2_rect *d)
+{
+ r->left = v->left * n->width / d->width;
+ r->top = v->top * n->height / d->height;
+ r->width = v->width * n->width / d->width;
+ r->height = v->height * n->height / d->height;
+}
+
+static int s5k5baf_hw_set_crop_rects(struct s5k5baf *state)
+{
+ struct v4l2_rect *p, r;
+ u16 err;
+ int ret;
+
+ p = &state->crop_sink;
+ s5k5baf_write_seq(state, REG_G_PREVREQ_IN_WIDTH, p->width, p->height,
+ p->left, p->top);
+
+ s5k5baf_rescale(&r, &state->crop_source, &state->crop_sink,
+ &state->compose);
+ s5k5baf_write_seq(state, REG_G_PREVZOOM_IN_WIDTH, r.width, r.height,
+ r.left, r.top);
+
+ s5k5baf_synchronize(state, 500, REG_G_INPUTS_CHANGE_REQ);
+ s5k5baf_synchronize(state, 500, REG_G_PREV_CFG_BYPASS_CHANGED);
+ err = s5k5baf_get_cfg_error(state);
+ ret = s5k5baf_clear_error(state);
+ if (ret < 0)
+ return ret;
+
+ switch (err) {
+ case 0:
+ break;
+ case CFG_ERROR_RANGE:
+ /* retry crop with frame interval set to max */
+ s5k5baf_hw_set_fiv(state, S5K5BAF_MAX_FR_TIME);
+ err = s5k5baf_get_cfg_error(state);
+ ret = s5k5baf_clear_error(state);
+ if (ret < 0)
+ return ret;
+ if (err) {
+ v4l2_err(&state->sd,
+ "crop error on max frame interval: %d\n", err);
+ state->error = -EINVAL;
+ }
+ s5k5baf_hw_set_fiv(state, state->req_fiv);
+ s5k5baf_hw_validate_cfg(state);
+ break;
+ default:
+ v4l2_err(&state->sd, "crop error: %d\n", err);
+ return -EINVAL;
+ }
+
+ if (!state->apply_cfg)
+ return 0;
+
+ p = &state->crop_source;
+ s5k5baf_write_seq(state, REG_P_OUT_WIDTH(0), p->width, p->height);
+ s5k5baf_hw_set_fiv(state, state->req_fiv);
+ s5k5baf_hw_validate_cfg(state);
+
+ return s5k5baf_clear_error(state);
+}
+
+static void s5k5baf_hw_set_config(struct s5k5baf *state)
+{
+ u16 reg_fmt = s5k5baf_formats[state->pixfmt].reg_p_fmt;
+ struct v4l2_rect *r = &state->crop_source;
+
+ s5k5baf_write_seq(state, REG_P_OUT_WIDTH(0),
+ r->width, r->height, reg_fmt,
+ PCLK_MAX_FREQ >> 2, PCLK_MIN_FREQ >> 2,
+ PVI_MASK_MIPI, CLK_MIPI_INDEX,
+ FR_RATE_FIXED, FR_RATE_Q_DYNAMIC,
+ state->req_fiv, S5K5BAF_MIN_FR_TIME);
+ s5k5baf_hw_sync_cfg(state);
+ s5k5baf_hw_validate_cfg(state);
+}
+
+
+static void s5k5baf_hw_set_test_pattern(struct s5k5baf *state, int id)
+{
+ s5k5baf_i2c_write(state, REG_PATTERN_WIDTH, 800);
+ s5k5baf_i2c_write(state, REG_PATTERN_HEIGHT, 511);
+ s5k5baf_i2c_write(state, REG_PATTERN_PARAM, 0);
+ s5k5baf_i2c_write(state, REG_PATTERN_SET, id);
+}
+
+static void s5k5baf_gpio_assert(struct s5k5baf *state, int id)
+{
+ struct s5k5baf_gpio *gpio = &state->gpios[id];
+
+ gpio_set_value(gpio->gpio, gpio->level);
+}
+
+static void s5k5baf_gpio_deassert(struct s5k5baf *state, int id)
+{
+ struct s5k5baf_gpio *gpio = &state->gpios[id];
+
+ gpio_set_value(gpio->gpio, !gpio->level);
+}
+
+static int s5k5baf_power_on(struct s5k5baf *state)
+{
+ int ret;
+
+ ret = regulator_bulk_enable(S5K5BAF_NUM_SUPPLIES, state->supplies);
+ if (ret < 0)
+ goto err;
+
+ ret = clk_set_rate(state->clock, state->mclk_frequency);
+ if (ret < 0)
+ goto err_reg_dis;
+
+ ret = clk_prepare_enable(state->clock);
+ if (ret < 0)
+ goto err_reg_dis;
+
+ v4l2_dbg(1, debug, &state->sd, "clock frequency: %ld\n",
+ clk_get_rate(state->clock));
+
+ s5k5baf_gpio_deassert(state, STBY);
+ usleep_range(50, 100);
+ s5k5baf_gpio_deassert(state, RST);
+ return 0;
+
+err_reg_dis:
+ regulator_bulk_disable(S5K5BAF_NUM_SUPPLIES, state->supplies);
+err:
+ v4l2_err(&state->sd, "%s() failed (%d)\n", __func__, ret);
+ return ret;
+}
+
+static int s5k5baf_power_off(struct s5k5baf *state)
+{
+ int ret;
+
+ state->streaming = 0;
+ state->apply_cfg = 0;
+ state->apply_crop = 0;
+
+ s5k5baf_gpio_assert(state, RST);
+ s5k5baf_gpio_assert(state, STBY);
+
+ if (!IS_ERR(state->clock))
+ clk_disable_unprepare(state->clock);
+
+ ret = regulator_bulk_disable(S5K5BAF_NUM_SUPPLIES,
+ state->supplies);
+ if (ret < 0)
+ v4l2_err(&state->sd, "failed to disable regulators\n");
+
+ return 0;
+}
+
+static void s5k5baf_hw_init(struct s5k5baf *state)
+{
+ s5k5baf_i2c_write(state, AHB_MSB_ADDR_PTR, PAGE_IF_HW);
+ s5k5baf_i2c_write(state, REG_CLEAR_HOST_INT, 0);
+ s5k5baf_i2c_write(state, REG_SW_LOAD_COMPLETE, 1);
+ s5k5baf_i2c_write(state, REG_CMDRD_PAGE, PAGE_IF_SW);
+ s5k5baf_i2c_write(state, REG_CMDWR_PAGE, PAGE_IF_SW);
+}
+
+/*
+ * V4L2 subdev core and video operations
+ */
+
+static void s5k5baf_initialize_data(struct s5k5baf *state)
+{
+ state->pixfmt = 0;
+ state->req_fiv = 10000 / 15;
+ state->fiv = state->req_fiv;
+ state->valid_auto_alg = 0;
+}
+
+static int s5k5baf_set_power(struct v4l2_subdev *sd, int on)
+{
+ struct s5k5baf *state = to_s5k5baf(sd);
+ int ret = 0;
+
+ mutex_lock(&state->lock);
+
+ if (!on != state->power)
+ goto out;
+
+ if (on) {
+ s5k5baf_initialize_data(state);
+ ret = s5k5baf_power_on(state);
+ if (ret < 0)
+ goto out;
+
+ s5k5baf_hw_init(state);
+ s5k5baf_hw_patch(state);
+ s5k5baf_i2c_write(state, REG_SET_HOST_INT, 1);
+ s5k5baf_hw_set_clocks(state);
+
+ ret = s5k5baf_hw_set_video_bus(state);
+ if (ret < 0)
+ goto out;
+
+ s5k5baf_hw_set_cis(state);
+ s5k5baf_hw_set_ccm(state);
+
+ ret = s5k5baf_clear_error(state);
+ if (!ret)
+ state->power++;
+ } else {
+ s5k5baf_power_off(state);
+ state->power--;
+ }
+
+out:
+ mutex_unlock(&state->lock);
+
+ if (!ret && on)
+ ret = v4l2_ctrl_handler_setup(&state->ctrls.handler);
+
+ return ret;
+}
+
+static void s5k5baf_hw_set_stream(struct s5k5baf *state, int enable)
+{
+ s5k5baf_write_seq(state, REG_G_ENABLE_PREV, enable, 1);
+}
+
+static int s5k5baf_s_stream(struct v4l2_subdev *sd, int on)
+{
+ struct s5k5baf *state = to_s5k5baf(sd);
+ int ret;
+
+ mutex_lock(&state->lock);
+
+ if (state->streaming == !!on) {
+ ret = 0;
+ goto out;
+ }
+
+ if (on) {
+ s5k5baf_hw_set_config(state);
+ ret = s5k5baf_hw_set_crop_rects(state);
+ if (ret < 0)
+ goto out;
+ s5k5baf_hw_set_stream(state, 1);
+ s5k5baf_i2c_write(state, 0xb0cc, 0x000b);
+ } else {
+ s5k5baf_hw_set_stream(state, 0);
+ }
+ ret = s5k5baf_clear_error(state);
+ if (!ret)
+ state->streaming = !state->streaming;
+
+out:
+ mutex_unlock(&state->lock);
+
+ return ret;
+}
+
+static int s5k5baf_g_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct s5k5baf *state = to_s5k5baf(sd);
+
+ mutex_lock(&state->lock);
+ fi->interval.numerator = state->fiv;
+ fi->interval.denominator = 10000;
+ mutex_unlock(&state->lock);
+
+ return 0;
+}
+
+static void s5k5baf_set_frame_interval(struct s5k5baf *state,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct v4l2_fract *i = &fi->interval;
+
+ if (fi->interval.denominator == 0)
+ state->req_fiv = S5K5BAF_MAX_FR_TIME;
+ else
+ state->req_fiv = clamp_t(u32,
+ i->numerator * 10000 / i->denominator,
+ S5K5BAF_MIN_FR_TIME,
+ S5K5BAF_MAX_FR_TIME);
+
+ state->fiv = state->req_fiv;
+ if (state->apply_cfg) {
+ s5k5baf_hw_set_fiv(state, state->req_fiv);
+ s5k5baf_hw_validate_cfg(state);
+ }
+ *i = (struct v4l2_fract){ state->fiv, 10000 };
+ if (state->fiv == state->req_fiv)
+ v4l2_info(&state->sd, "frame interval changed to %d00us\n",
+ state->fiv);
+}
+
+static int s5k5baf_s_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_frame_interval *fi)
+{
+ struct s5k5baf *state = to_s5k5baf(sd);
+
+ mutex_lock(&state->lock);
+ s5k5baf_set_frame_interval(state, fi);
+ mutex_unlock(&state->lock);
+ return 0;
+}
+
+/*
+ * V4L2 subdev pad level and video operations
+ */
+static int s5k5baf_enum_frame_interval(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_interval_enum *fie)
+{
+ if (fie->index > S5K5BAF_MAX_FR_TIME - S5K5BAF_MIN_FR_TIME ||
+ fie->pad != PAD_CIS)
+ return -EINVAL;
+
+ v4l_bound_align_image(&fie->width, S5K5BAF_WIN_WIDTH_MIN,
+ S5K5BAF_CIS_WIDTH, 1,
+ &fie->height, S5K5BAF_WIN_HEIGHT_MIN,
+ S5K5BAF_CIS_HEIGHT, 1, 0);
+
+ fie->interval.numerator = S5K5BAF_MIN_FR_TIME + fie->index;
+ fie->interval.denominator = 10000;
+
+ return 0;
+}
+
+static int s5k5baf_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ if (code->pad == PAD_CIS) {
+ if (code->index > 0)
+ return -EINVAL;
+ code->code = V4L2_MBUS_FMT_FIXED;
+ return 0;
+ }
+
+ if (code->index >= ARRAY_SIZE(s5k5baf_formats))
+ return -EINVAL;
+
+ code->code = s5k5baf_formats[code->index].code;
+ return 0;
+}
+
+static int s5k5baf_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ int i;
+
+ if (fse->index > 0)
+ return -EINVAL;
+
+ if (fse->pad == PAD_CIS) {
+ fse->code = V4L2_MBUS_FMT_FIXED;
+ fse->min_width = S5K5BAF_CIS_WIDTH;
+ fse->max_width = S5K5BAF_CIS_WIDTH;
+ fse->min_height = S5K5BAF_CIS_HEIGHT;
+ fse->max_height = S5K5BAF_CIS_HEIGHT;
+ return 0;
+ }
+
+ i = ARRAY_SIZE(s5k5baf_formats);
+ while (--i)
+ if (fse->code == s5k5baf_formats[i].code)
+ break;
+ fse->code = s5k5baf_formats[i].code;
+ fse->min_width = S5K5BAF_WIN_WIDTH_MIN;
+ fse->max_width = S5K5BAF_CIS_WIDTH;
+ fse->max_height = S5K5BAF_WIN_HEIGHT_MIN;
+ fse->min_height = S5K5BAF_CIS_HEIGHT;
+
+ return 0;
+}
+
+static void s5k5baf_try_cis_format(struct v4l2_mbus_framefmt *mf)
+{
+ mf->width = S5K5BAF_CIS_WIDTH;
+ mf->height = S5K5BAF_CIS_HEIGHT;
+ mf->code = V4L2_MBUS_FMT_FIXED;
+ mf->colorspace = V4L2_COLORSPACE_JPEG;
+ mf->field = V4L2_FIELD_NONE;
+}
+
+static int s5k5baf_try_isp_format(struct v4l2_mbus_framefmt *mf)
+{
+ int pixfmt;
+
+ v4l_bound_align_image(&mf->width, S5K5BAF_WIN_WIDTH_MIN,
+ S5K5BAF_CIS_WIDTH, 1,
+ &mf->height, S5K5BAF_WIN_HEIGHT_MIN,
+ S5K5BAF_CIS_HEIGHT, 1, 0);
+
+ pixfmt = s5k5baf_find_pixfmt(mf);
+
+ mf->colorspace = s5k5baf_formats[pixfmt].colorspace;
+ mf->code = s5k5baf_formats[pixfmt].code;
+ mf->field = V4L2_FIELD_NONE;
+
+ return pixfmt;
+}
+
+static int s5k5baf_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct s5k5baf *state = to_s5k5baf(sd);
+ const struct s5k5baf_pixfmt *pixfmt;
+ struct v4l2_mbus_framefmt *mf;
+
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ mf = v4l2_subdev_get_try_format(fh, fmt->pad);
+ fmt->format = *mf;
+ return 0;
+ }
+
+ mf = &fmt->format;
+ if (fmt->pad == PAD_CIS) {
+ s5k5baf_try_cis_format(mf);
+ return 0;
+ }
+ mf->field = V4L2_FIELD_NONE;
+ mutex_lock(&state->lock);
+ pixfmt = &s5k5baf_formats[state->pixfmt];
+ mf->width = state->crop_source.width;
+ mf->height = state->crop_source.height;
+ mf->code = pixfmt->code;
+ mf->colorspace = pixfmt->colorspace;
+ mutex_unlock(&state->lock);
+
+ return 0;
+}
+
+static int s5k5baf_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct v4l2_mbus_framefmt *mf = &fmt->format;
+ struct s5k5baf *state = to_s5k5baf(sd);
+ const struct s5k5baf_pixfmt *pixfmt;
+ int ret = 0;
+
+ if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
+ *v4l2_subdev_get_try_format(fh, fmt->pad) = *mf;
+ return 0;
+ }
+
+ if (fmt->pad == PAD_CIS) {
+ s5k5baf_try_cis_format(mf);
+ return 0;
+ }
+
+ mutex_lock(&state->lock);
+
+ if (state->streaming) {
+ mutex_unlock(&state->lock);
+ return -EBUSY;
+ }
+
+ state->pixfmt = s5k5baf_try_isp_format(mf);
+ pixfmt = &s5k5baf_formats[state->pixfmt];
+ mf->code = pixfmt->code;
+ mf->colorspace = pixfmt->colorspace;
+ mf->width = state->crop_source.width;
+ mf->height = state->crop_source.height;
+
+ mutex_unlock(&state->lock);
+ return ret;
+}
+
+enum selection_rect { R_CIS, R_CROP_SINK, R_COMPOSE, R_CROP_SOURCE, R_INVALID };
+
+static enum selection_rect s5k5baf_get_sel_rect(u32 pad, u32 target)
+{
+ switch (target) {
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ return pad ? R_COMPOSE : R_CIS;
+ case V4L2_SEL_TGT_CROP:
+ return pad ? R_CROP_SOURCE : R_CROP_SINK;
+ case V4L2_SEL_TGT_COMPOSE_BOUNDS:
+ return pad ? R_INVALID : R_CROP_SINK;
+ case V4L2_SEL_TGT_COMPOSE:
+ return pad ? R_INVALID : R_COMPOSE;
+ default:
+ return R_INVALID;
+ }
+}
+
+static int s5k5baf_is_bound_target(u32 target)
+{
+ return (target == V4L2_SEL_TGT_CROP_BOUNDS ||
+ target == V4L2_SEL_TGT_COMPOSE_BOUNDS);
+}
+
+static int s5k5baf_get_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_selection *sel)
+{
+ static enum selection_rect rtype;
+ struct s5k5baf *state = to_s5k5baf(sd);
+
+ rtype = s5k5baf_get_sel_rect(sel->pad, sel->target);
+
+ switch (rtype) {
+ case R_INVALID:
+ return -EINVAL;
+ case R_CIS:
+ sel->r = s5k5baf_cis_rect;
+ return 0;
+ default:
+ break;
+ }
+
+ if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
+ if (rtype == R_COMPOSE)
+ sel->r = *v4l2_subdev_get_try_compose(fh, sel->pad);
+ else
+ sel->r = *v4l2_subdev_get_try_crop(fh, sel->pad);
+ return 0;
+ }
+
+ mutex_lock(&state->lock);
+ switch (rtype) {
+ case R_CROP_SINK:
+ sel->r = state->crop_sink;
+ break;
+ case R_COMPOSE:
+ sel->r = state->compose;
+ break;
+ case R_CROP_SOURCE:
+ sel->r = state->crop_source;
+ break;
+ default:
+ break;
+ }
+ if (s5k5baf_is_bound_target(sel->target)) {
+ sel->r.left = 0;
+ sel->r.top = 0;
+ }
+ mutex_unlock(&state->lock);
+
+ return 0;
+}
+
+/* bounds range [start, start+len) to [0, max) and aligns to 2 */
+static void s5k5baf_bound_range(u32 *start, u32 *len, u32 max)
+{
+ if (*len > max)
+ *len = max;
+ if (*start + *len > max)
+ *start = max - *len;
+ *start &= ~1;
+ *len &= ~1;
+ if (*len < S5K5BAF_WIN_WIDTH_MIN)
+ *len = S5K5BAF_WIN_WIDTH_MIN;
+}
+
+static void s5k5baf_bound_rect(struct v4l2_rect *r, u32 width, u32 height)
+{
+ s5k5baf_bound_range(&r->left, &r->width, width);
+ s5k5baf_bound_range(&r->top, &r->height, height);
+}
+
+static void s5k5baf_set_rect_and_adjust(struct v4l2_rect **rects,
+ enum selection_rect first,
+ struct v4l2_rect *v)
+{
+ struct v4l2_rect *r, *br;
+ enum selection_rect i = first;
+
+ *rects[first] = *v;
+ do {
+ r = rects[i];
+ br = rects[i - 1];
+ s5k5baf_bound_rect(r, br->width, br->height);
+ } while (++i != R_INVALID);
+ *v = *rects[first];
+}
+
+static bool s5k5baf_cmp_rect(const struct v4l2_rect *r1,
+ const struct v4l2_rect *r2)
+{
+ return !memcmp(r1, r2, sizeof(*r1));
+}
+
+static int s5k5baf_set_selection(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_selection *sel)
+{
+ static enum selection_rect rtype;
+ struct s5k5baf *state = to_s5k5baf(sd);
+ struct v4l2_rect **rects;
+ int ret = 0;
+
+ rtype = s5k5baf_get_sel_rect(sel->pad, sel->target);
+ if (rtype == R_INVALID || s5k5baf_is_bound_target(sel->target))
+ return -EINVAL;
+
+ /* allow only scaling on compose */
+ if (rtype == R_COMPOSE) {
+ sel->r.left = 0;
+ sel->r.top = 0;
+ }
+
+ if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
+ rects = (struct v4l2_rect * []) {
+ &s5k5baf_cis_rect,
+ v4l2_subdev_get_try_crop(fh, PAD_CIS),
+ v4l2_subdev_get_try_compose(fh, PAD_CIS),
+ v4l2_subdev_get_try_crop(fh, PAD_OUT)
+ };
+ s5k5baf_set_rect_and_adjust(rects, rtype, &sel->r);
+ return 0;
+ }
+
+ rects = (struct v4l2_rect * []) {
+ &s5k5baf_cis_rect,
+ &state->crop_sink,
+ &state->compose,
+ &state->crop_source
+ };
+ mutex_lock(&state->lock);
+ if (state->streaming) {
+ /* adjust sel->r to avoid output resolution change */
+ if (rtype < R_CROP_SOURCE) {
+ if (sel->r.width < state->crop_source.width)
+ sel->r.width = state->crop_source.width;
+ if (sel->r.height < state->crop_source.height)
+ sel->r.height = state->crop_source.height;
+ } else {
+ sel->r.width = state->crop_source.width;
+ sel->r.height = state->crop_source.height;
+ }
+ }
+ s5k5baf_set_rect_and_adjust(rects, rtype, &sel->r);
+ if (!s5k5baf_cmp_rect(&state->crop_sink, &s5k5baf_cis_rect) ||
+ !s5k5baf_cmp_rect(&state->compose, &s5k5baf_cis_rect))
+ state->apply_crop = 1;
+ if (state->streaming)
+ ret = s5k5baf_hw_set_crop_rects(state);
+ mutex_unlock(&state->lock);
+
+ return ret;
+}
+
+static const struct v4l2_subdev_pad_ops s5k5baf_cis_pad_ops = {
+ .enum_mbus_code = s5k5baf_enum_mbus_code,
+ .enum_frame_size = s5k5baf_enum_frame_size,
+ .get_fmt = s5k5baf_get_fmt,
+ .set_fmt = s5k5baf_set_fmt,
+};
+
+static const struct v4l2_subdev_pad_ops s5k5baf_pad_ops = {
+ .enum_mbus_code = s5k5baf_enum_mbus_code,
+ .enum_frame_size = s5k5baf_enum_frame_size,
+ .enum_frame_interval = s5k5baf_enum_frame_interval,
+ .get_fmt = s5k5baf_get_fmt,
+ .set_fmt = s5k5baf_set_fmt,
+ .get_selection = s5k5baf_get_selection,
+ .set_selection = s5k5baf_set_selection,
+};
+
+static const struct v4l2_subdev_video_ops s5k5baf_video_ops = {
+ .g_frame_interval = s5k5baf_g_frame_interval,
+ .s_frame_interval = s5k5baf_s_frame_interval,
+ .s_stream = s5k5baf_s_stream,
+};
+
+/*
+ * V4L2 subdev controls
+ */
+
+static int s5k5baf_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
+ struct s5k5baf *state = to_s5k5baf(sd);
+ int ret;
+
+ v4l2_dbg(1, debug, sd, "ctrl: %s, value: %d\n", ctrl->name, ctrl->val);
+
+ mutex_lock(&state->lock);
+
+ if (state->power == 0)
+ goto unlock;
+
+ switch (ctrl->id) {
+ case V4L2_CID_AUTO_WHITE_BALANCE:
+ s5k5baf_hw_set_awb(state, ctrl->val);
+ break;
+
+ case V4L2_CID_BRIGHTNESS:
+ s5k5baf_write(state, REG_USER_BRIGHTNESS, ctrl->val);
+ break;
+
+ case V4L2_CID_COLORFX:
+ s5k5baf_hw_set_colorfx(state, ctrl->val);
+ break;
+
+ case V4L2_CID_CONTRAST:
+ s5k5baf_write(state, REG_USER_CONTRAST, ctrl->val);
+ break;
+
+ case V4L2_CID_EXPOSURE_AUTO:
+ s5k5baf_hw_set_auto_exposure(state, ctrl->val);
+ break;
+
+ case V4L2_CID_HFLIP:
+ s5k5baf_hw_set_mirror(state);
+ break;
+
+ case V4L2_CID_POWER_LINE_FREQUENCY:
+ s5k5baf_hw_set_anti_flicker(state, ctrl->val);
+ break;
+
+ case V4L2_CID_SATURATION:
+ s5k5baf_write(state, REG_USER_SATURATION, ctrl->val);
+ break;
+
+ case V4L2_CID_SHARPNESS:
+ s5k5baf_write(state, REG_USER_SHARPBLUR, ctrl->val);
+ break;
+
+ case V4L2_CID_WHITE_BALANCE_TEMPERATURE:
+ s5k5baf_write(state, REG_P_COLORTEMP(0), ctrl->val);
+ if (state->apply_cfg)
+ s5k5baf_hw_sync_cfg(state);
+ break;
+
+ case V4L2_CID_TEST_PATTERN:
+ s5k5baf_hw_set_test_pattern(state, ctrl->val);
+ break;
+ }
+unlock:
+ ret = s5k5baf_clear_error(state);
+ mutex_unlock(&state->lock);
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops s5k5baf_ctrl_ops = {
+ .s_ctrl = s5k5baf_s_ctrl,
+};
+
+static const char * const s5k5baf_test_pattern_menu[] = {
+ "Disabled",
+ "Blank",
+ "Bars",
+ "Gradients",
+ "Textile",
+ "Textile2",
+ "Squares"
+};
+
+static int s5k5baf_initialize_ctrls(struct s5k5baf *state)
+{
+ const struct v4l2_ctrl_ops *ops = &s5k5baf_ctrl_ops;
+ struct s5k5baf_ctrls *ctrls = &state->ctrls;
+ struct v4l2_ctrl_handler *hdl = &ctrls->handler;
+ int ret;
+
+ ret = v4l2_ctrl_handler_init(hdl, 16);
+ if (ret < 0) {
+ v4l2_err(&state->sd, "cannot init ctrl handler (%d)\n", ret);
+ return ret;
+ }
+
+ /* Auto white balance cluster */
+ ctrls->awb = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTO_WHITE_BALANCE,
+ 0, 1, 1, 1);
+ ctrls->gain_red = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE,
+ 0, 255, 1, S5K5BAF_GAIN_RED_DEF);
+ ctrls->gain_blue = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE,
+ 0, 255, 1, S5K5BAF_GAIN_BLUE_DEF);
+ v4l2_ctrl_auto_cluster(3, &ctrls->awb, 0, false);
+
+ ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
+ ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
+ v4l2_ctrl_cluster(2, &ctrls->hflip);
+
+ ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
+ V4L2_CID_EXPOSURE_AUTO,
+ V4L2_EXPOSURE_MANUAL, 0, V4L2_EXPOSURE_AUTO);
+ /* Exposure time: x 1 us */
+ ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
+ 0, 6000000U, 1, 100000U);
+ /* Total gain: 256 <=> 1x */
+ ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_GAIN,
+ 0, 256, 1, 256);
+ v4l2_ctrl_auto_cluster(3, &ctrls->auto_exp, 0, false);
+
+ v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_POWER_LINE_FREQUENCY,
+ V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
+ V4L2_CID_POWER_LINE_FREQUENCY_AUTO);
+
+ v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_COLORFX,
+ V4L2_COLORFX_SKY_BLUE, ~0x6f, V4L2_COLORFX_NONE);
+
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_WHITE_BALANCE_TEMPERATURE,
+ 0, 256, 1, 0);
+
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION, -127, 127, 1, 0);
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BRIGHTNESS, -127, 127, 1, 0);
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST, -127, 127, 1, 0);
+ v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SHARPNESS, -127, 127, 1, 0);
+
+ v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
+ ARRAY_SIZE(s5k5baf_test_pattern_menu) - 1,
+ 0, 0, s5k5baf_test_pattern_menu);
+
+ if (hdl->error) {
+ v4l2_err(&state->sd, "error creating controls (%d)\n",
+ hdl->error);
+ ret = hdl->error;
+ v4l2_ctrl_handler_free(hdl);
+ return ret;
+ }
+
+ state->sd.ctrl_handler = hdl;
+ return 0;
+}
+
+/*
+ * V4L2 subdev internal operations
+ */
+static int s5k5baf_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct v4l2_mbus_framefmt *mf;
+
+ mf = v4l2_subdev_get_try_format(fh, PAD_CIS);
+ s5k5baf_try_cis_format(mf);
+
+ if (s5k5baf_is_cis_subdev(sd))
+ return 0;
+
+ mf = v4l2_subdev_get_try_format(fh, PAD_OUT);
+ mf->colorspace = s5k5baf_formats[0].colorspace;
+ mf->code = s5k5baf_formats[0].code;
+ mf->width = s5k5baf_cis_rect.width;
+ mf->height = s5k5baf_cis_rect.height;
+ mf->field = V4L2_FIELD_NONE;
+
+ *v4l2_subdev_get_try_crop(fh, PAD_CIS) = s5k5baf_cis_rect;
+ *v4l2_subdev_get_try_compose(fh, PAD_CIS) = s5k5baf_cis_rect;
+ *v4l2_subdev_get_try_crop(fh, PAD_OUT) = s5k5baf_cis_rect;
+
+ return 0;
+}
+
+static int s5k5baf_check_fw_revision(struct s5k5baf *state)
+{
+ u16 api_ver = 0, fw_rev = 0, s_id = 0;
+ int ret;
+
+ api_ver = s5k5baf_read(state, REG_FW_APIVER);
+ fw_rev = s5k5baf_read(state, REG_FW_REVISION) & 0xff;
+ s_id = s5k5baf_read(state, REG_FW_SENSOR_ID);
+ ret = s5k5baf_clear_error(state);
+ if (ret < 0)
+ return ret;
+
+ v4l2_info(&state->sd, "FW API=%#x, revision=%#x sensor_id=%#x\n",
+ api_ver, fw_rev, s_id);
+
+ if (api_ver != S5K5BAF_FW_APIVER) {
+ v4l2_err(&state->sd, "FW API version not supported\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static int s5k5baf_registered(struct v4l2_subdev *sd)
+{
+ struct s5k5baf *state = to_s5k5baf(sd);
+ int ret;
+
+ ret = v4l2_device_register_subdev(sd->v4l2_dev, &state->cis_sd);
+ if (ret < 0)
+ v4l2_err(sd, "failed to register subdev %s\n",
+ state->cis_sd.name);
+ else
+ ret = media_entity_create_link(&state->cis_sd.entity, PAD_CIS,
+ &state->sd.entity, PAD_CIS,
+ MEDIA_LNK_FL_IMMUTABLE |
+ MEDIA_LNK_FL_ENABLED);
+ return ret;
+}
+
+static void s5k5baf_unregistered(struct v4l2_subdev *sd)
+{
+ struct s5k5baf *state = to_s5k5baf(sd);
+ v4l2_device_unregister_subdev(&state->cis_sd);
+}
+
+static const struct v4l2_subdev_ops s5k5baf_cis_subdev_ops = {
+ .pad = &s5k5baf_cis_pad_ops,
+};
+
+static const struct v4l2_subdev_internal_ops s5k5baf_cis_subdev_internal_ops = {
+ .open = s5k5baf_open,
+};
+
+static const struct v4l2_subdev_internal_ops s5k5baf_subdev_internal_ops = {
+ .registered = s5k5baf_registered,
+ .unregistered = s5k5baf_unregistered,
+ .open = s5k5baf_open,
+};
+
+static const struct v4l2_subdev_core_ops s5k5baf_core_ops = {
+ .s_power = s5k5baf_set_power,
+ .log_status = v4l2_ctrl_subdev_log_status,
+};
+
+static const struct v4l2_subdev_ops s5k5baf_subdev_ops = {
+ .core = &s5k5baf_core_ops,
+ .pad = &s5k5baf_pad_ops,
+ .video = &s5k5baf_video_ops,
+};
+
+static int s5k5baf_configure_gpios(struct s5k5baf *state)
+{
+ static const char const *name[] = { "S5K5BAF_STBY", "S5K5BAF_RST" };
+ struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
+ struct s5k5baf_gpio *g = state->gpios;
+ int ret, i;
+
+ for (i = 0; i < GPIO_NUM; ++i) {
+ int flags = GPIOF_DIR_OUT;
+ if (g[i].level)
+ flags |= GPIOF_INIT_HIGH;
+ ret = devm_gpio_request_one(&c->dev, g[i].gpio, flags, name[i]);
+ if (ret < 0) {
+ v4l2_err(c, "failed to request gpio %s\n", name[i]);
+ return ret;
+ }
+ }
+ return 0;
+}
+
+static int s5k5baf_parse_gpios(struct s5k5baf_gpio *gpios, struct device *dev)
+{
+ static const char * const names[] = {
+ "stbyn-gpios",
+ "rstn-gpios",
+ };
+ struct device_node *node = dev->of_node;
+ enum of_gpio_flags flags;
+ int ret, i;
+
+ for (i = 0; i < GPIO_NUM; ++i) {
+ ret = of_get_named_gpio_flags(node, names[i], 0, &flags);
+ if (ret < 0) {
+ dev_err(dev, "no %s GPIO pin provided\n", names[i]);
+ return ret;
+ }
+ gpios[i].gpio = ret;
+ gpios[i].level = !(flags & OF_GPIO_ACTIVE_LOW);
+ }
+
+ return 0;
+}
+
+static int s5k5baf_parse_device_node(struct s5k5baf *state, struct device *dev)
+{
+ struct device_node *node = dev->of_node;
+ struct device_node *node_ep;
+ struct v4l2_of_endpoint ep;
+ int ret;
+
+ if (!node) {
+ dev_err(dev, "no device-tree node provided\n");
+ return -EINVAL;
+ }
+
+ ret = of_property_read_u32(node, "clock-frequency",
+ &state->mclk_frequency);
+ if (ret < 0) {
+ state->mclk_frequency = S5K5BAF_DEFAULT_MCLK_FREQ;
+ dev_info(dev, "using default %u Hz clock frequency\n",
+ state->mclk_frequency);
+ }
+
+ ret = s5k5baf_parse_gpios(state->gpios, dev);
+ if (ret < 0)
+ return ret;
+
+ node_ep = v4l2_of_get_next_endpoint(node, NULL);
+ if (!node_ep) {
+ dev_err(dev, "no endpoint defined at node %s\n",
+ node->full_name);
+ return -EINVAL;
+ }
+
+ v4l2_of_parse_endpoint(node_ep, &ep);
+ of_node_put(node_ep);
+ state->bus_type = ep.bus_type;
+
+ switch (state->bus_type) {
+ case V4L2_MBUS_CSI2:
+ state->nlanes = ep.bus.mipi_csi2.num_data_lanes;
+ break;
+ case V4L2_MBUS_PARALLEL:
+ break;
+ default:
+ dev_err(dev, "unsupported bus in endpoint defined at node %s\n",
+ node->full_name);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int s5k5baf_configure_subdevs(struct s5k5baf *state,
+ struct i2c_client *c)
+{
+ struct v4l2_subdev *sd;
+ int ret;
+
+ sd = &state->cis_sd;
+ v4l2_subdev_init(sd, &s5k5baf_cis_subdev_ops);
+ sd->owner = THIS_MODULE;
+ v4l2_set_subdevdata(sd, state);
+ snprintf(sd->name, sizeof(sd->name), "S5K5BAF-CIS %d-%04x",
+ i2c_adapter_id(c->adapter), c->addr);
+
+ sd->internal_ops = &s5k5baf_cis_subdev_internal_ops;
+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ state->cis_pad.flags = MEDIA_PAD_FL_SOURCE;
+ sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
+ ret = media_entity_init(&sd->entity, CIS_PAD_NUM, &state->cis_pad, 0);
+ if (ret < 0)
+ goto err;
+
+ sd = &state->sd;
+ v4l2_i2c_subdev_init(sd, c, &s5k5baf_subdev_ops);
+ snprintf(sd->name, sizeof(sd->name), "S5K5BAF-ISP %d-%04x",
+ i2c_adapter_id(c->adapter), c->addr);
+
+ sd->internal_ops = &s5k5baf_subdev_internal_ops;
+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ state->pads[PAD_CIS].flags = MEDIA_PAD_FL_SINK;
+ state->pads[PAD_OUT].flags = MEDIA_PAD_FL_SOURCE;
+ sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV;
+ ret = media_entity_init(&sd->entity, ISP_PAD_NUM, state->pads, 0);
+
+ if (!ret)
+ return 0;
+
+ media_entity_cleanup(&state->cis_sd.entity);
+err:
+ dev_err(&c->dev, "cannot init media entity %s\n", sd->name);
+ return ret;
+}
+
+static int s5k5baf_configure_regulators(struct s5k5baf *state)
+{
+ struct i2c_client *c = v4l2_get_subdevdata(&state->sd);
+ int ret;
+ int i;
+
+ for (i = 0; i < S5K5BAF_NUM_SUPPLIES; i++)
+ state->supplies[i].supply = s5k5baf_supply_names[i];
+
+ ret = devm_regulator_bulk_get(&c->dev, S5K5BAF_NUM_SUPPLIES,
+ state->supplies);
+ if (ret < 0)
+ v4l2_err(c, "failed to get regulators\n");
+ return ret;
+}
+
+static int s5k5baf_probe(struct i2c_client *c,
+ const struct i2c_device_id *id)
+{
+ struct s5k5baf *state;
+ int ret;
+
+ state = devm_kzalloc(&c->dev, sizeof(*state), GFP_KERNEL);
+ if (!state)
+ return -ENOMEM;
+
+ mutex_init(&state->lock);
+ state->crop_sink = s5k5baf_cis_rect;
+ state->compose = s5k5baf_cis_rect;
+ state->crop_source = s5k5baf_cis_rect;
+
+ ret = s5k5baf_parse_device_node(state, &c->dev);
+ if (ret < 0)
+ return ret;
+
+ ret = s5k5baf_configure_subdevs(state, c);
+ if (ret < 0)
+ return ret;
+
+ ret = s5k5baf_configure_gpios(state);
+ if (ret < 0)
+ goto err_me;
+
+ ret = s5k5baf_configure_regulators(state);
+ if (ret < 0)
+ goto err_me;
+
+ state->clock = devm_clk_get(state->sd.dev, S5K5BAF_CLK_NAME);
+ if (IS_ERR(state->clock)) {
+ ret = -EPROBE_DEFER;
+ goto err_me;
+ }
+
+ ret = s5k5baf_power_on(state);
+ if (ret < 0) {
+ ret = -EPROBE_DEFER;
+ goto err_me;
+ }
+ s5k5baf_hw_init(state);
+ ret = s5k5baf_check_fw_revision(state);
+
+ s5k5baf_power_off(state);
+ if (ret < 0)
+ goto err_me;
+
+ ret = s5k5baf_initialize_ctrls(state);
+ if (ret < 0)
+ goto err_me;
+
+ ret = v4l2_async_register_subdev(&state->sd);
+ if (ret < 0)
+ goto err_ctrl;
+
+ return 0;
+
+err_ctrl:
+ v4l2_ctrl_handler_free(state->sd.ctrl_handler);
+err_me:
+ media_entity_cleanup(&state->sd.entity);
+ media_entity_cleanup(&state->cis_sd.entity);
+ return ret;
+}
+
+static int s5k5baf_remove(struct i2c_client *c)
+{
+ struct v4l2_subdev *sd = i2c_get_clientdata(c);
+ struct s5k5baf *state = to_s5k5baf(sd);
+
+ v4l2_async_unregister_subdev(sd);
+ v4l2_ctrl_handler_free(sd->ctrl_handler);
+ media_entity_cleanup(&sd->entity);
+
+ sd = &state->cis_sd;
+ v4l2_device_unregister_subdev(sd);
+ media_entity_cleanup(&sd->entity);
+
+ return 0;
+}
+
+static const struct i2c_device_id s5k5baf_id[] = {
+ { S5K5BAF_DRIVER_NAME, 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, s5k5baf_id);
+
+static const struct of_device_id s5k5baf_of_match[] = {
+ { .compatible = "samsung,s5k5baf" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, s5k5baf_of_match);
+
+static struct i2c_driver s5k5baf_i2c_driver = {
+ .driver = {
+ .of_match_table = s5k5baf_of_match,
+ .name = S5K5BAF_DRIVER_NAME
+ },
+ .probe = s5k5baf_probe,
+ .remove = s5k5baf_remove,
+ .id_table = s5k5baf_id,
+};
+
+module_i2c_driver(s5k5baf_i2c_driver);
+
+MODULE_DESCRIPTION("Samsung S5K5BAF(X) UXGA camera driver");
+MODULE_AUTHOR("Andrzej Hajda <a.hajda@xxxxxxxxxxx>");
+MODULE_LICENSE("GPL v2");
--
1.8.1.2
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