This adds ADV7611/ADV7612 Xpressview HDMI Receiver base support. Only one HDMI port is supported on ADV7612.
The code is based on the ADV7604 driver, and ADV7612 patch by Shinobu Uehara <[email protected]> Changes in version 2: * Used platform data for I2C addresses setup. The driver should work with both SoC and non-SoC camera models. * Dropped unnecessary code and unsupported callbacks. * Implemented IRQ handling for format change detection. Signed-off-by: Valentine Barshak <[email protected]> --- drivers/media/i2c/Kconfig | 11 + drivers/media/i2c/Makefile | 1 + drivers/media/i2c/adv761x.c | 1009 +++++++++++++++++++++++++++++++++++++++++++ include/media/adv761x.h | 38 ++ 4 files changed, 1059 insertions(+) create mode 100644 drivers/media/i2c/adv761x.c create mode 100644 include/media/adv761x.h diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig index 75c8a03..2388642 100644 --- a/drivers/media/i2c/Kconfig +++ b/drivers/media/i2c/Kconfig @@ -206,6 +206,17 @@ config VIDEO_ADV7604 To compile this driver as a module, choose M here: the module will be called adv7604. +config VIDEO_ADV761X + tristate "Analog Devices ADV761X decoder" + depends on VIDEO_V4L2 && I2C + ---help--- + Support for the Analog Devices ADV7611/ADV7612 video decoder. + + This is an Analog Devices Xpressview HDMI Receiver. + + To compile this driver as a module, choose M here: the + module will be called adv761x. + config VIDEO_ADV7842 tristate "Analog Devices ADV7842 decoder" depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile index e03f177..d78d627 100644 --- a/drivers/media/i2c/Makefile +++ b/drivers/media/i2c/Makefile @@ -26,6 +26,7 @@ obj-$(CONFIG_VIDEO_ADV7183) += adv7183.o obj-$(CONFIG_VIDEO_ADV7343) += adv7343.o obj-$(CONFIG_VIDEO_ADV7393) += adv7393.o obj-$(CONFIG_VIDEO_ADV7604) += adv7604.o +obj-$(CONFIG_VIDEO_ADV761X) += adv761x.o obj-$(CONFIG_VIDEO_ADV7842) += adv7842.o obj-$(CONFIG_VIDEO_AD9389B) += ad9389b.o obj-$(CONFIG_VIDEO_ADV7511) += adv7511.o diff --git a/drivers/media/i2c/adv761x.c b/drivers/media/i2c/adv761x.c new file mode 100644 index 0000000..95939f5 --- /dev/null +++ b/drivers/media/i2c/adv761x.c @@ -0,0 +1,1009 @@ +/* + * adv761x Analog Devices ADV761X HDMI receiver driver + * + * Copyright (C) 2013 Cogent Embedded, Inc. + * Copyright (C) 2013 Renesas Electronics Corporation + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/errno.h> +#include <linux/gpio.h> +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/rwsem.h> +#include <linux/slab.h> +#include <linux/videodev2.h> +#include <media/adv761x.h> +#include <media/soc_camera.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> + +#define ADV761X_DRIVER_NAME "adv761x" + +/* VERT_FILTER_LOCKED and DE_REGEN_FILTER_LOCKED flags */ +#define ADV761X_HDMI_F_LOCKED(v) (((v) & 0xa0) == 0xa0) + +/* Maximum supported resolution */ +#define ADV761X_MAX_WIDTH 1920 +#define ADV761X_MAX_HEIGHT 1080 + +/* Use SoC camera subdev desc private data for platform_data */ +#define ADV761X_SOC_CAM_QUIRK 0x1 + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "debug level (0-2)"); + +struct adv761x_color_format { + enum v4l2_mbus_pixelcode code; + enum v4l2_colorspace colorspace; +}; + +/* Supported color format list */ +static const struct adv761x_color_format adv761x_cfmts[] = { + { + .code = V4L2_MBUS_FMT_RGB888_1X24, + .colorspace = V4L2_COLORSPACE_SRGB, + }, +}; + +/* ADV761X descriptor structure */ +struct adv761x_state { + struct v4l2_subdev sd; + struct media_pad pad; + struct v4l2_ctrl_handler ctrl_hdl; + + u8 edid[256]; + unsigned edid_blocks; + + struct rw_semaphore rwsem; + const struct adv761x_color_format *cfmt; + u32 width; + u32 height; + enum v4l2_field scanmode; + u32 status; + + int gpio; + int irq; + + struct workqueue_struct *work_queue; + struct delayed_work enable_hotplug; + struct work_struct interrupt_service; + + struct i2c_client *i2c_cec; + struct i2c_client *i2c_inf; + struct i2c_client *i2c_dpll; + struct i2c_client *i2c_rep; + struct i2c_client *i2c_edid; + struct i2c_client *i2c_hdmi; + struct i2c_client *i2c_cp; +}; + +static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) +{ + return &container_of(ctrl->handler, struct adv761x_state, ctrl_hdl)->sd; +} + +static inline struct adv761x_state *to_state(struct v4l2_subdev *sd) +{ + return container_of(sd, struct adv761x_state, sd); +} + +/* I2C I/O operations */ +static s32 adv_smbus_read_byte_data(struct i2c_client *client, u8 command) +{ + s32 ret, i; + + for (i = 0; i < 3; i++) { + ret = i2c_smbus_read_byte_data(client, command); + if (ret >= 0) + return ret; + } + + v4l_err(client, "Reading addr:%02x reg:%02x\n failed", + client->addr, command); + return ret; +} + +static s32 adv_smbus_write_byte_data(struct i2c_client *client, u8 command, + u8 value) +{ + s32 ret, i; + + for (i = 0; i < 3; i++) { + ret = i2c_smbus_write_byte_data(client, command, value); + if (!ret) + return 0; + } + + v4l_err(client, "Writing addr:%02x reg:%02x val:%02x failed\n", + client->addr, command, value); + return ret; +} + +static s32 adv_smbus_write_i2c_block_data(struct i2c_client *client, u8 command, + u8 length, const u8 *values) +{ + s32 ret, i; + + ret = i2c_smbus_write_i2c_block_data(client, command, length, values); + if (!ret) + return 0; + + for (i = 0; i < length; i++) { + ret = adv_smbus_write_byte_data(client, command + i, values[i]); + if (ret) + break; + } + + return ret; +} + +static inline int io_read(struct v4l2_subdev *sd, u8 reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + return adv_smbus_read_byte_data(client, reg); +} + +static inline int io_write(struct v4l2_subdev *sd, u8 reg, u8 val) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + return adv_smbus_write_byte_data(client, reg, val); +} + +static inline int cec_read(struct v4l2_subdev *sd, u8 reg) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_read_byte_data(state->i2c_cec, reg); +} + +static inline int cec_write(struct v4l2_subdev *sd, u8 reg, u8 val) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_write_byte_data(state->i2c_cec, reg, val); +} + +static inline int infoframe_read(struct v4l2_subdev *sd, u8 reg) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_read_byte_data(state->i2c_inf, reg); +} + +static inline int infoframe_write(struct v4l2_subdev *sd, u8 reg, u8 val) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_write_byte_data(state->i2c_inf, reg, val); +} + +static inline int dpll_read(struct v4l2_subdev *sd, u8 reg) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_read_byte_data(state->i2c_dpll, reg); +} + +static inline int dpll_write(struct v4l2_subdev *sd, u8 reg, u8 val) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_write_byte_data(state->i2c_dpll, reg, val); +} + +static inline int rep_read(struct v4l2_subdev *sd, u8 reg) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_read_byte_data(state->i2c_rep, reg); +} + +static inline int rep_write(struct v4l2_subdev *sd, u8 reg, u8 val) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_write_byte_data(state->i2c_rep, reg, val); +} + +static inline int edid_read(struct v4l2_subdev *sd, u8 reg) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_read_byte_data(state->i2c_edid, reg); +} + +static inline int edid_write(struct v4l2_subdev *sd, u8 reg, u8 val) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_write_byte_data(state->i2c_edid, reg, val); +} + +static inline int edid_write_block(struct v4l2_subdev *sd, + unsigned len, const u8 *val) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + struct adv761x_state *state = to_state(sd); + int ret = 0; + int i; + + v4l2_dbg(2, debug, sd, "Writing EDID block (%d bytes)\n", len); + + v4l2_subdev_notify(sd, ADV761X_HOTPLUG, (void *)0); + + /* Disable I2C access to internal EDID ram from DDC port */ + rep_write(sd, 0x74, 0x0); + + for (i = 0; !ret && i < len; i += I2C_SMBUS_BLOCK_MAX) + ret = adv_smbus_write_i2c_block_data(state->i2c_edid, i, + I2C_SMBUS_BLOCK_MAX, val + i); + if (ret) + return ret; + + /* + * ADV761x calculates the checksums and enables I2C access + * to internal EDID ram from DDC port. + */ + rep_write(sd, 0x74, 0x01); + + for (i = 0; i < 1000; i++) { + if (rep_read(sd, 0x76) & 0x1) { + /* Enable hotplug after 100 ms */ + queue_delayed_work(state->work_queue, + &state->enable_hotplug, HZ / 10); + return 0; + } + schedule(); + } + + v4l_err(client, "Enabling EDID failed\n"); + return -EIO; +} + +static inline int hdmi_read(struct v4l2_subdev *sd, u8 reg) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_read_byte_data(state->i2c_hdmi, reg); +} + +static inline int hdmi_write(struct v4l2_subdev *sd, u8 reg, u8 val) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_write_byte_data(state->i2c_hdmi, reg, val); +} + +static inline int cp_read(struct v4l2_subdev *sd, u8 reg) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_read_byte_data(state->i2c_cp, reg); +} + +static inline int cp_write(struct v4l2_subdev *sd, u8 reg, u8 val) +{ + struct adv761x_state *state = to_state(sd); + + return adv_smbus_write_byte_data(state->i2c_cp, reg, val); +} + +static inline int adv761x_power_off(struct v4l2_subdev *sd) +{ + return io_write(sd, 0x0c, 0x62); +} + +static int adv761x_core_init(struct v4l2_subdev *sd) +{ + io_write(sd, 0x01, 0x06); /* V-FREQ = 60Hz */ + /* Prim_Mode = HDMI-GR */ + io_write(sd, 0x02, 0xf2); /* Auto CSC, RGB out */ + /* Disable op_656 bit */ + io_write(sd, 0x03, 0x42); /* 36 bit SDR 444 Mode 0 */ + io_write(sd, 0x05, 0x28); /* AV Codes Off */ + io_write(sd, 0x0b, 0x44); /* Power up part */ + io_write(sd, 0x0c, 0x42); /* Power up part */ + io_write(sd, 0x14, 0x7f); /* Max Drive Strength */ + io_write(sd, 0x15, 0x80); /* Disable Tristate of Pins */ + /* (Audio output pins active) */ + io_write(sd, 0x19, 0x83); /* LLC DLL phase */ + io_write(sd, 0x33, 0x40); /* LLC DLL enable */ + + cp_write(sd, 0xba, 0x01); /* Set HDMI FreeRun */ + cp_write(sd, 0x3e, 0x80); /* Enable color adjustments */ + + hdmi_write(sd, 0x9b, 0x03); /* ADI recommended setting */ + hdmi_write(sd, 0x00, 0x08); /* Set HDMI Input Port A */ + /* (BG_MEAS_PORT_SEL = 001b) */ + hdmi_write(sd, 0x02, 0x03); /* Enable Ports A & B in */ + /* background mode */ + hdmi_write(sd, 0x6d, 0x80); /* Enable TDM mode */ + hdmi_write(sd, 0x03, 0x18); /* I2C mode 24 bits */ + hdmi_write(sd, 0x83, 0xfc); /* Enable clock terminators */ + /* for port A & B */ + hdmi_write(sd, 0x6f, 0x0c); /* ADI recommended setting */ + hdmi_write(sd, 0x85, 0x1f); /* ADI recommended setting */ + hdmi_write(sd, 0x87, 0x70); /* ADI recommended setting */ + hdmi_write(sd, 0x8d, 0x04); /* LFG Port A */ + hdmi_write(sd, 0x8e, 0x1e); /* HFG Port A */ + hdmi_write(sd, 0x1a, 0x8a); /* unmute audio */ + hdmi_write(sd, 0x57, 0xda); /* ADI recommended setting */ + hdmi_write(sd, 0x58, 0x01); /* ADI recommended setting */ + hdmi_write(sd, 0x75, 0x10); /* DDC drive strength */ + hdmi_write(sd, 0x90, 0x04); /* LFG Port B */ + hdmi_write(sd, 0x91, 0x1e); /* HFG Port B */ + hdmi_write(sd, 0x04, 0x03); + hdmi_write(sd, 0x14, 0x00); + hdmi_write(sd, 0x15, 0x00); + hdmi_write(sd, 0x16, 0x00); + + rep_write(sd, 0x40, 0x81); /* Disable HDCP 1.1 features */ + rep_write(sd, 0x74, 0x00); /* Disable the Internal EDID */ + /* for all ports */ + + /* Setup interrupts */ + io_write(sd, 0x40, 0xc2); /* Active high until cleared */ + io_write(sd, 0x6e, 0x03); /* INT1 HDMI DE_REGEN and V_LOCK */ + + return v4l2_ctrl_handler_setup(sd->ctrl_handler); +} + +static int adv761x_hdmi_info(struct v4l2_subdev *sd, enum v4l2_field *scanmode, + u32 *width, u32 *height) +{ + int msb, val; + + /* Line width */ + msb = hdmi_read(sd, 0x07); + if (msb < 0) + return msb; + + if (!ADV761X_HDMI_F_LOCKED(msb)) + return -EAGAIN; + + /* Interlaced or progressive */ + val = hdmi_read(sd, 0x0b); + if (val < 0) + return val; + + *scanmode = (val & 0x20) ? V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE; + val = hdmi_read(sd, 0x08); + if (val < 0) + return val; + + val |= (msb & 0x1f) << 8; + *width = val; + + /* Lines per frame */ + msb = hdmi_read(sd, 0x09); + if (msb < 0) + return msb; + + val = hdmi_read(sd, 0x0a); + if (val < 0) + return val; + + val |= (msb & 0x1f) << 8; + if (*scanmode == V4L2_FIELD_INTERLACED) + val <<= 1; + *height = val; + + if (*width == 0 || *height == 0) + return -EIO; + + return 0; +} + +/* Hotplug work */ +static void adv761x_enable_hotplug(struct work_struct *work) +{ + struct delayed_work *dwork = to_delayed_work(work); + struct adv761x_state *state = container_of(dwork, struct adv761x_state, + enable_hotplug); + struct v4l2_subdev *sd = &state->sd; + + v4l2_dbg(2, debug, sd, "Enable hotplug\n"); + v4l2_subdev_notify(sd, ADV761X_HOTPLUG, (void *)1); +} + +/* IRQ work */ +static void adv761x_interrupt_service(struct work_struct *work) +{ + struct adv761x_state *state = container_of(work, struct adv761x_state, + interrupt_service); + struct v4l2_subdev *sd = &state->sd; + enum v4l2_field scanmode; + u32 width, height; + u32 status = 0; + int ret; + + /* Clear HDMI interrupts */ + io_write(sd, 0x6c, 0xff); + + ret = adv761x_hdmi_info(sd, &scanmode, &width, &height); + if (ret) { + if (state->status == V4L2_IN_ST_NO_SIGNAL) + return; + + width = ADV761X_MAX_WIDTH; + height = ADV761X_MAX_HEIGHT; + scanmode = V4L2_FIELD_NONE; + status = V4L2_IN_ST_NO_SIGNAL; + } + + if (status) + v4l2_dbg(2, debug, sd, "No HDMI video input detected\n"); + else + v4l2_dbg(2, debug, sd, "HDMI video input detected (%ux%u%c)\n", + width, height, + scanmode == V4L2_FIELD_NONE ? 'p' : 'i'); + + down_write(&state->rwsem); + state->width = width; + state->height = height; + state->scanmode = scanmode; + state->status = status; + up_write(&state->rwsem); + + v4l2_subdev_notify(sd, ADV761X_FMT_CHANGE, NULL); +} + +/* IRQ handler */ +static irqreturn_t adv761x_irq_handler(int irq, void *devid) +{ + struct adv761x_state *state = devid; + + queue_work(state->work_queue, &state->interrupt_service); + return IRQ_HANDLED; +} + +/* v4l2_subdev_core_ops */ +#ifdef CONFIG_VIDEO_ADV_DEBUG +static void adv761x_inv_register(struct v4l2_subdev *sd) +{ + v4l2_info(sd, "0x000-0x0ff: IO Map\n"); + v4l2_info(sd, "0x100-0x1ff: CEC Map\n"); + v4l2_info(sd, "0x200-0x2ff: InfoFrame Map\n"); + v4l2_info(sd, "0x300-0x3ff: DPLL Map\n"); + v4l2_info(sd, "0x400-0x4ff: Repeater Map\n"); + v4l2_info(sd, "0x500-0x5ff: EDID Map\n"); + v4l2_info(sd, "0x600-0x6ff: HDMI Map\n"); + v4l2_info(sd, "0x700-0x7ff: CP Map\n"); +} + +static int adv761x_g_register(struct v4l2_subdev *sd, + struct v4l2_dbg_register *reg) +{ + reg->size = 1; + switch (reg->reg >> 8) { + case 0: + reg->val = io_read(sd, reg->reg & 0xff); + break; + case 1: + reg->val = cec_read(sd, reg->reg & 0xff); + break; + case 2: + reg->val = infoframe_read(sd, reg->reg & 0xff); + break; + case 3: + reg->val = dpll_read(sd, reg->reg & 0xff); + break; + case 4: + reg->val = rep_read(sd, reg->reg & 0xff); + break; + case 5: + reg->val = edid_read(sd, reg->reg & 0xff); + break; + case 6: + reg->val = hdmi_read(sd, reg->reg & 0xff); + break; + case 7: + reg->val = cp_read(sd, reg->reg & 0xff); + break; + default: + v4l2_info(sd, "Register %03llx not supported\n", reg->reg); + adv761x_inv_register(sd); + break; + } + return 0; +} + +static int adv761x_s_register(struct v4l2_subdev *sd, + const struct v4l2_dbg_register *reg) +{ + switch (reg->reg >> 8) { + case 0: + io_write(sd, reg->reg & 0xff, reg->val & 0xff); + break; + case 1: + cec_write(sd, reg->reg & 0xff, reg->val & 0xff); + break; + case 2: + infoframe_write(sd, reg->reg & 0xff, reg->val & 0xff); + break; + case 3: + dpll_write(sd, reg->reg & 0xff, reg->val & 0xff); + break; + case 4: + rep_write(sd, reg->reg & 0xff, reg->val & 0xff); + break; + case 5: + edid_write(sd, reg->reg & 0xff, reg->val & 0xff); + break; + case 6: + hdmi_write(sd, reg->reg & 0xff, reg->val & 0xff); + break; + case 7: + cp_write(sd, reg->reg & 0xff, reg->val & 0xff); + break; + default: + v4l2_info(sd, "Register %03llx not supported\n", reg->reg); + adv761x_inv_register(sd); + break; + } + return 0; +} +#endif /* CONFIG_VIDEO_ADV_DEBUG */ + +/* v4l2_subdev_video_ops */ +static int adv761x_g_input_status(struct v4l2_subdev *sd, u32 *status) +{ + struct adv761x_state *state = to_state(sd); + + down_read(&state->rwsem); + *status = state->status; + up_read(&state->rwsem); + return 0; +} + +static int adv761x_g_mbus_fmt(struct v4l2_subdev *sd, + struct v4l2_mbus_framefmt *mf) +{ + struct adv761x_state *state = to_state(sd); + + down_read(&state->rwsem); + mf->width = state->width; + mf->height = state->height; + mf->field = state->scanmode; + mf->code = state->cfmt->code; + mf->colorspace = state->cfmt->colorspace; + up_read(&state->rwsem); + return 0; +} + +static int adv761x_enum_mbus_fmt(struct v4l2_subdev *sd, unsigned int index, + enum v4l2_mbus_pixelcode *code) +{ + /* Check requested format index is within range */ + if (index >= ARRAY_SIZE(adv761x_cfmts)) + return -EINVAL; + + *code = adv761x_cfmts[index].code; + + return 0; +} + +static int adv761x_g_mbus_config(struct v4l2_subdev *sd, + struct v4l2_mbus_config *cfg) +{ + cfg->flags = V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_MASTER | + V4L2_MBUS_VSYNC_ACTIVE_LOW | V4L2_MBUS_HSYNC_ACTIVE_LOW | + V4L2_MBUS_DATA_ACTIVE_HIGH; + cfg->type = V4L2_MBUS_PARALLEL; + + return 0; +} + +/* v4l2_subdev_pad_ops */ +static int adv761x_get_edid(struct v4l2_subdev *sd, + struct v4l2_subdev_edid *edid) +{ + struct adv761x_state *state = to_state(sd); + + if (edid->pad != 0) + return -EINVAL; + + if (edid->blocks == 0) + return -EINVAL; + + if (edid->start_block >= state->edid_blocks) + return -EINVAL; + + if (edid->start_block + edid->blocks > state->edid_blocks) + edid->blocks = state->edid_blocks - edid->start_block; + if (!edid->edid) + return -EINVAL; + + memcpy(edid->edid + edid->start_block * 128, + state->edid + edid->start_block * 128, + edid->blocks * 128); + return 0; +} + +static int adv761x_set_edid(struct v4l2_subdev *sd, + struct v4l2_subdev_edid *edid) +{ + struct adv761x_state *state = to_state(sd); + int ret; + + if (edid->pad != 0) + return -EINVAL; + + if (edid->start_block != 0) + return -EINVAL; + + if (edid->blocks == 0) { + /* Pull down the hotplug pin */ + v4l2_subdev_notify(sd, ADV761X_HOTPLUG, (void *)0); + /* Disable I2C access to internal EDID RAM from DDC port */ + rep_write(sd, 0x74, 0x0); + state->edid_blocks = 0; + return 0; + } + + if (edid->blocks > 2) + return -E2BIG; + + if (!edid->edid) + return -EINVAL; + + memcpy(state->edid, edid->edid, 128 * edid->blocks); + state->edid_blocks = edid->blocks; + + ret = edid_write_block(sd, 128 * edid->blocks, state->edid); + if (ret < 0) + v4l2_err(sd, "Writing EDID failed\n"); + + return ret; +} + +/* v4l2_ctrl_ops */ +static int adv761x_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct v4l2_subdev *sd = to_sd(ctrl); + u8 val = ctrl->val; + int ret; + + switch (ctrl->id) { + case V4L2_CID_BRIGHTNESS: + ret = cp_write(sd, 0x3c, val); + break; + case V4L2_CID_CONTRAST: + ret = cp_write(sd, 0x3a, val); + break; + case V4L2_CID_SATURATION: + ret = cp_write(sd, 0x3b, val); + break; + case V4L2_CID_HUE: + ret = cp_write(sd, 0x3d, val); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +/* V4L structures */ +static const struct v4l2_subdev_core_ops adv761x_core_ops = { +#ifdef CONFIG_VIDEO_ADV_DEBUG + .g_register = adv761x_g_register, + .s_register = adv761x_s_register, +#endif +}; + +static const struct v4l2_subdev_video_ops adv761x_video_ops = { + .g_input_status = adv761x_g_input_status, + .g_mbus_fmt = adv761x_g_mbus_fmt, + .try_mbus_fmt = adv761x_g_mbus_fmt, + .s_mbus_fmt = adv761x_g_mbus_fmt, + .enum_mbus_fmt = adv761x_enum_mbus_fmt, + .g_mbus_config = adv761x_g_mbus_config, +}; + +static const struct v4l2_subdev_pad_ops adv761x_pad_ops = { + .get_edid = adv761x_get_edid, + .set_edid = adv761x_set_edid, +}; + +static const struct v4l2_subdev_ops adv761x_ops = { + .core = &adv761x_core_ops, + .video = &adv761x_video_ops, + .pad = &adv761x_pad_ops, +}; + +static const struct v4l2_ctrl_ops adv761x_ctrl_ops = { + .s_ctrl = adv761x_s_ctrl, +}; + +/* Device initialization and clean-up */ +static void adv761x_unregister_clients(struct adv761x_state *state) +{ + if (state->i2c_cec) + i2c_unregister_device(state->i2c_cec); + if (state->i2c_inf) + i2c_unregister_device(state->i2c_inf); + if (state->i2c_dpll) + i2c_unregister_device(state->i2c_dpll); + if (state->i2c_rep) + i2c_unregister_device(state->i2c_rep); + if (state->i2c_edid) + i2c_unregister_device(state->i2c_edid); + if (state->i2c_hdmi) + i2c_unregister_device(state->i2c_hdmi); + if (state->i2c_cp) + i2c_unregister_device(state->i2c_cp); +} + +static struct i2c_client *adv761x_dummy_client(struct v4l2_subdev *sd, + u8 addr, u8 def_addr, u8 io_reg) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + if (!addr) + addr = def_addr; + + io_write(sd, io_reg, addr << 1); + return i2c_new_dummy(client->adapter, addr); +} + +static inline int adv761x_check_rev(struct i2c_client *client) +{ + int msb, rev; + + msb = adv_smbus_read_byte_data(client, 0xea); + if (msb < 0) + return msb; + + rev = adv_smbus_read_byte_data(client, 0xeb); + if (rev < 0) + return rev; + + rev |= msb << 8; + + switch (rev) { + case 0x2051: + return 7611; + case 0x2041: + return 7612; + default: + break; + } + + return -ENODEV; +} + +static int adv761x_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct adv761x_platform_data *pdata; + struct adv761x_state *state; + struct v4l2_ctrl_handler *ctrl_hdl; + struct v4l2_subdev *sd; + int irq, ret; + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -EIO; + + /* Check chip revision */ + ret = adv761x_check_rev(client); + if (ret < 0) + return ret; + + v4l_info(client, "Chip found @ 0x%02x (adv%d)\n", client->addr, ret); + + /* Get platform data */ + if (id->driver_data == ADV761X_SOC_CAM_QUIRK) { + struct soc_camera_subdev_desc *ssdd; + + v4l_info(client, "Using SoC camera glue\n"); + ssdd = soc_camera_i2c_to_desc(client); + pdata = ssdd ? ssdd->drv_priv : NULL; + } else { + pdata = client->dev.platform_data; + } + + if (!pdata) { + v4l_err(client, "No platform data found\n"); + return -ENODEV; + } + + state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); + if (state == NULL) { + v4l_err(client, "Memory allocation failed\n"); + return -ENOMEM; + } + + init_rwsem(&state->rwsem); + + /* Setup default values */ + state->cfmt = &adv761x_cfmts[0]; + state->width = ADV761X_MAX_WIDTH; + state->height = ADV761X_MAX_HEIGHT; + state->scanmode = V4L2_FIELD_NONE; + state->status = V4L2_IN_ST_NO_SIGNAL; + state->gpio = -1; + + /* Setup subdev */ + sd = &state->sd; + v4l2_i2c_subdev_init(sd, client, &adv761x_ops); + sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + + /* Setup I2C clients */ + state->i2c_cec = adv761x_dummy_client(sd, pdata->i2c_cec, 0x40, 0xf4); + state->i2c_inf = adv761x_dummy_client(sd, pdata->i2c_inf, 0x3e, 0xf5); + state->i2c_dpll = adv761x_dummy_client(sd, pdata->i2c_dpll, 0x26, 0xf8); + state->i2c_rep = adv761x_dummy_client(sd, pdata->i2c_rep, 0x32, 0xf9); + state->i2c_edid = adv761x_dummy_client(sd, pdata->i2c_edid, 0x36, 0xfa); + state->i2c_hdmi = adv761x_dummy_client(sd, pdata->i2c_hdmi, 0x34, 0xfb); + state->i2c_cp = adv761x_dummy_client(sd, pdata->i2c_cp, 0x22, 0xfd); + if (!state->i2c_cec || !state->i2c_inf || !state->i2c_dpll || + !state->i2c_rep || !state->i2c_edid || + !state->i2c_hdmi || !state->i2c_cp) { + ret = -ENODEV; + v4l2_err(sd, "I2C clients setup failed\n"); + goto err_i2c; + } + + /* Setup control handlers */ + ctrl_hdl = &state->ctrl_hdl; + v4l2_ctrl_handler_init(ctrl_hdl, 4); + v4l2_ctrl_new_std(ctrl_hdl, &adv761x_ctrl_ops, + V4L2_CID_BRIGHTNESS, -128, 127, 1, 0); + v4l2_ctrl_new_std(ctrl_hdl, &adv761x_ctrl_ops, + V4L2_CID_CONTRAST, 0, 255, 1, 128); + v4l2_ctrl_new_std(ctrl_hdl, &adv761x_ctrl_ops, + V4L2_CID_SATURATION, 0, 255, 1, 128); + v4l2_ctrl_new_std(ctrl_hdl, &adv761x_ctrl_ops, + V4L2_CID_HUE, 0, 255, 1, 0); + sd->ctrl_handler = ctrl_hdl; + if (ctrl_hdl->error) { + ret = ctrl_hdl->error; + v4l2_err(sd, "Control handlers setup failed\n"); + goto err_hdl; + } + + /* Setup media entity */ + state->pad.flags = MEDIA_PAD_FL_SOURCE; + ret = media_entity_init(&sd->entity, 1, &state->pad, 0); + if (ret) { + v4l2_err(sd, "Media entity setup failed\n"); + goto err_hdl; + } + + /* Setup work queue */ + state->work_queue = create_singlethread_workqueue(client->name); + if (!state->work_queue) { + ret = -ENOMEM; + v4l2_err(sd, "Work queue setup failed\n"); + goto err_entity; + } + + INIT_DELAYED_WORK(&state->enable_hotplug, adv761x_enable_hotplug); + INIT_WORK(&state->interrupt_service, adv761x_interrupt_service); + + /* Setup IRQ */ + irq = client->irq; + if (irq <= 0) { + v4l_info(client, "Using GPIO IRQ\n"); + ret = gpio_request_one(pdata->gpio, GPIOF_IN, + ADV761X_DRIVER_NAME); + if (ret) { + v4l_err(client, "GPIO setup failed\n"); + goto err_work; + } + + state->gpio = pdata->gpio; + irq = gpio_to_irq(pdata->gpio); + } + + if (irq <= 0) { + ret = -ENODEV; + v4l_err(client, "IRQ not found\n"); + goto err_gpio; + } + + ret = request_irq(irq, adv761x_irq_handler, IRQF_TRIGGER_RISING, + ADV761X_DRIVER_NAME, state); + if (ret) { + v4l_err(client, "IRQ setup failed\n"); + goto err_gpio; + } + + state->irq = irq; + + /* Setup core registers */ + ret = adv761x_core_init(sd); + if (ret < 0) { + v4l_err(client, "Core setup failed\n"); + goto err_core; + } + + return 0; + +err_core: + adv761x_power_off(sd); + free_irq(state->irq, state); +err_gpio: + if (gpio_is_valid(state->gpio)) + gpio_free(state->gpio); +err_work: + cancel_work_sync(&state->interrupt_service); + cancel_delayed_work_sync(&state->enable_hotplug); + destroy_workqueue(state->work_queue); +err_entity: + media_entity_cleanup(&sd->entity); +err_hdl: + v4l2_ctrl_handler_free(ctrl_hdl); +err_i2c: + adv761x_unregister_clients(state); + return ret; +} + +static int adv761x_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct adv761x_state *state = to_state(sd); + + /* Release IRQ/GPIO */ + free_irq(state->irq, state); + if (gpio_is_valid(state->gpio)) + gpio_free(state->gpio); + + /* Destroy workqueue */ + cancel_work_sync(&state->interrupt_service); + cancel_delayed_work_sync(&state->enable_hotplug); + destroy_workqueue(state->work_queue); + + /* Power off */ + adv761x_power_off(sd); + + /* Clean up*/ + v4l2_device_unregister_subdev(sd); + media_entity_cleanup(&sd->entity); + v4l2_ctrl_handler_free(sd->ctrl_handler); + adv761x_unregister_clients(state); + return 0; +} + +static const struct i2c_device_id adv761x_id[] = { + { "adv761x", 0 }, + { "adv761x-soc_cam", ADV761X_SOC_CAM_QUIRK }, + { }, +}; + +MODULE_DEVICE_TABLE(i2c, adv761x_id); + +static struct i2c_driver adv761x_driver = { + .driver = { + .owner = THIS_MODULE, + .name = ADV761X_DRIVER_NAME, + }, + .probe = adv761x_probe, + .remove = adv761x_remove, + .id_table = adv761x_id, +}; + +module_i2c_driver(adv761x_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("ADV761X HDMI receiver video decoder driver"); +MODULE_AUTHOR("Valentine Barshak <[email protected]>"); diff --git a/include/media/adv761x.h b/include/media/adv761x.h new file mode 100644 index 0000000..ec54361 --- /dev/null +++ b/include/media/adv761x.h @@ -0,0 +1,38 @@ +/* + * adv761x Analog Devices ADV761X HDMI receiver driver + * + * Copyright (C) 2013 Cogent Embedded, Inc. + * Copyright (C) 2013 Renesas Electronics Corporation + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _ADV761X_H_ +#define _ADV761X_H_ + +struct adv761x_platform_data { + /* INT1 GPIO IRQ */ + int gpio; + + /* I2C addresses: 0 == use default */ + u8 i2c_cec; + u8 i2c_inf; + u8 i2c_dpll; + u8 i2c_rep; + u8 i2c_edid; + u8 i2c_hdmi; + u8 i2c_cp; +}; + +/* Notify events */ +#define ADV761X_HOTPLUG 1 +#define ADV761X_FMT_CHANGE 2 + +#endif /* _ADV761X_H_ */ -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
