diff options
Diffstat (limited to 'drivers/media/i2c/ad9389b.c')
| -rw-r--r-- | drivers/media/i2c/ad9389b.c | 1215 |
1 files changed, 0 insertions, 1215 deletions
diff --git a/drivers/media/i2c/ad9389b.c b/drivers/media/i2c/ad9389b.c deleted file mode 100644 index ad17097a2d25..000000000000 --- a/drivers/media/i2c/ad9389b.c +++ /dev/null @@ -1,1215 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * Analog Devices AD9389B/AD9889B video encoder driver - * - * Copyright 2012 Cisco Systems, Inc. and/or its affiliates. All rights reserved. - */ - -/* - * References (c = chapter, p = page): - * REF_01 - Analog Devices, Programming Guide, AD9889B/AD9389B, - * HDMI Transitter, Rev. A, October 2010 - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/i2c.h> -#include <linux/delay.h> -#include <linux/videodev2.h> -#include <linux/workqueue.h> -#include <linux/v4l2-dv-timings.h> -#include <media/v4l2-device.h> -#include <media/v4l2-common.h> -#include <media/v4l2-dv-timings.h> -#include <media/v4l2-ctrls.h> -#include <media/i2c/ad9389b.h> - -static int debug; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "debug level (0-2)"); - -MODULE_DESCRIPTION("Analog Devices AD9389B/AD9889B video encoder driver"); -MODULE_AUTHOR("Hans Verkuil <hans.verkuil@cisco.com>"); -MODULE_AUTHOR("Martin Bugge <marbugge@cisco.com>"); -MODULE_LICENSE("GPL"); - -#define MASK_AD9389B_EDID_RDY_INT 0x04 -#define MASK_AD9389B_MSEN_INT 0x40 -#define MASK_AD9389B_HPD_INT 0x80 - -#define MASK_AD9389B_HPD_DETECT 0x40 -#define MASK_AD9389B_MSEN_DETECT 0x20 -#define MASK_AD9389B_EDID_RDY 0x10 - -#define EDID_MAX_RETRIES (8) -#define EDID_DELAY 250 -#define EDID_MAX_SEGM 8 - -/* -********************************************************************** -* -* Arrays with configuration parameters for the AD9389B -* -********************************************************************** -*/ - -struct ad9389b_state_edid { - /* total number of blocks */ - u32 blocks; - /* Number of segments read */ - u32 segments; - u8 data[EDID_MAX_SEGM * 256]; - /* Number of EDID read retries left */ - unsigned read_retries; -}; - -struct ad9389b_state { - struct ad9389b_platform_data pdata; - struct v4l2_subdev sd; - struct media_pad pad; - struct v4l2_ctrl_handler hdl; - int chip_revision; - /* Is the ad9389b powered on? */ - bool power_on; - /* Did we receive hotplug and rx-sense signals? */ - bool have_monitor; - /* timings from s_dv_timings */ - struct v4l2_dv_timings dv_timings; - /* controls */ - struct v4l2_ctrl *hdmi_mode_ctrl; - struct v4l2_ctrl *hotplug_ctrl; - struct v4l2_ctrl *rx_sense_ctrl; - struct v4l2_ctrl *have_edid0_ctrl; - struct v4l2_ctrl *rgb_quantization_range_ctrl; - struct i2c_client *edid_i2c_client; - struct ad9389b_state_edid edid; - /* Running counter of the number of detected EDIDs (for debugging) */ - unsigned edid_detect_counter; - struct delayed_work edid_handler; /* work entry */ -}; - -static void ad9389b_check_monitor_present_status(struct v4l2_subdev *sd); -static bool ad9389b_check_edid_status(struct v4l2_subdev *sd); -static void ad9389b_setup(struct v4l2_subdev *sd); -static int ad9389b_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq); -static int ad9389b_s_clock_freq(struct v4l2_subdev *sd, u32 freq); - -static inline struct ad9389b_state *get_ad9389b_state(struct v4l2_subdev *sd) -{ - return container_of(sd, struct ad9389b_state, sd); -} - -static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) -{ - return &container_of(ctrl->handler, struct ad9389b_state, hdl)->sd; -} - -/* ------------------------ I2C ----------------------------------------------- */ - -static int ad9389b_rd(struct v4l2_subdev *sd, u8 reg) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - - return i2c_smbus_read_byte_data(client, reg); -} - -static int ad9389b_wr(struct v4l2_subdev *sd, u8 reg, u8 val) -{ - struct i2c_client *client = v4l2_get_subdevdata(sd); - int ret; - int i; - - for (i = 0; i < 3; i++) { - ret = i2c_smbus_write_byte_data(client, reg, val); - if (ret == 0) - return 0; - } - v4l2_err(sd, "%s: failed reg 0x%x, val 0x%x\n", __func__, reg, val); - return ret; -} - -/* To set specific bits in the register, a clear-mask is given (to be AND-ed), - and then the value-mask (to be OR-ed). */ -static inline void ad9389b_wr_and_or(struct v4l2_subdev *sd, u8 reg, - u8 clr_mask, u8 val_mask) -{ - ad9389b_wr(sd, reg, (ad9389b_rd(sd, reg) & clr_mask) | val_mask); -} - -static void ad9389b_edid_rd(struct v4l2_subdev *sd, u16 len, u8 *buf) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - int i; - - v4l2_dbg(1, debug, sd, "%s:\n", __func__); - - for (i = 0; i < len; i++) - buf[i] = i2c_smbus_read_byte_data(state->edid_i2c_client, i); -} - -static inline bool ad9389b_have_hotplug(struct v4l2_subdev *sd) -{ - return ad9389b_rd(sd, 0x42) & MASK_AD9389B_HPD_DETECT; -} - -static inline bool ad9389b_have_rx_sense(struct v4l2_subdev *sd) -{ - return ad9389b_rd(sd, 0x42) & MASK_AD9389B_MSEN_DETECT; -} - -static void ad9389b_csc_conversion_mode(struct v4l2_subdev *sd, u8 mode) -{ - ad9389b_wr_and_or(sd, 0x17, 0xe7, (mode & 0x3)<<3); - ad9389b_wr_and_or(sd, 0x18, 0x9f, (mode & 0x3)<<5); -} - -static void ad9389b_csc_coeff(struct v4l2_subdev *sd, - u16 A1, u16 A2, u16 A3, u16 A4, - u16 B1, u16 B2, u16 B3, u16 B4, - u16 C1, u16 C2, u16 C3, u16 C4) -{ - /* A */ - ad9389b_wr_and_or(sd, 0x18, 0xe0, A1>>8); - ad9389b_wr(sd, 0x19, A1); - ad9389b_wr_and_or(sd, 0x1A, 0xe0, A2>>8); - ad9389b_wr(sd, 0x1B, A2); - ad9389b_wr_and_or(sd, 0x1c, 0xe0, A3>>8); - ad9389b_wr(sd, 0x1d, A3); - ad9389b_wr_and_or(sd, 0x1e, 0xe0, A4>>8); - ad9389b_wr(sd, 0x1f, A4); - - /* B */ - ad9389b_wr_and_or(sd, 0x20, 0xe0, B1>>8); - ad9389b_wr(sd, 0x21, B1); - ad9389b_wr_and_or(sd, 0x22, 0xe0, B2>>8); - ad9389b_wr(sd, 0x23, B2); - ad9389b_wr_and_or(sd, 0x24, 0xe0, B3>>8); - ad9389b_wr(sd, 0x25, B3); - ad9389b_wr_and_or(sd, 0x26, 0xe0, B4>>8); - ad9389b_wr(sd, 0x27, B4); - - /* C */ - ad9389b_wr_and_or(sd, 0x28, 0xe0, C1>>8); - ad9389b_wr(sd, 0x29, C1); - ad9389b_wr_and_or(sd, 0x2A, 0xe0, C2>>8); - ad9389b_wr(sd, 0x2B, C2); - ad9389b_wr_and_or(sd, 0x2C, 0xe0, C3>>8); - ad9389b_wr(sd, 0x2D, C3); - ad9389b_wr_and_or(sd, 0x2E, 0xe0, C4>>8); - ad9389b_wr(sd, 0x2F, C4); -} - -static void ad9389b_csc_rgb_full2limit(struct v4l2_subdev *sd, bool enable) -{ - if (enable) { - u8 csc_mode = 0; - - ad9389b_csc_conversion_mode(sd, csc_mode); - ad9389b_csc_coeff(sd, - 4096-564, 0, 0, 256, - 0, 4096-564, 0, 256, - 0, 0, 4096-564, 256); - /* enable CSC */ - ad9389b_wr_and_or(sd, 0x3b, 0xfe, 0x1); - /* AVI infoframe: Limited range RGB (16-235) */ - ad9389b_wr_and_or(sd, 0xcd, 0xf9, 0x02); - } else { - /* disable CSC */ - ad9389b_wr_and_or(sd, 0x3b, 0xfe, 0x0); - /* AVI infoframe: Full range RGB (0-255) */ - ad9389b_wr_and_or(sd, 0xcd, 0xf9, 0x04); - } -} - -static void ad9389b_set_IT_content_AVI_InfoFrame(struct v4l2_subdev *sd) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - - if (state->dv_timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) { - /* CE format, not IT */ - ad9389b_wr_and_or(sd, 0xcd, 0xbf, 0x00); - } else { - /* IT format */ - ad9389b_wr_and_or(sd, 0xcd, 0xbf, 0x40); - } -} - -static int ad9389b_set_rgb_quantization_mode(struct v4l2_subdev *sd, struct v4l2_ctrl *ctrl) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - - switch (ctrl->val) { - case V4L2_DV_RGB_RANGE_AUTO: - /* automatic */ - if (state->dv_timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) { - /* CE format, RGB limited range (16-235) */ - ad9389b_csc_rgb_full2limit(sd, true); - } else { - /* not CE format, RGB full range (0-255) */ - ad9389b_csc_rgb_full2limit(sd, false); - } - break; - case V4L2_DV_RGB_RANGE_LIMITED: - /* RGB limited range (16-235) */ - ad9389b_csc_rgb_full2limit(sd, true); - break; - case V4L2_DV_RGB_RANGE_FULL: - /* RGB full range (0-255) */ - ad9389b_csc_rgb_full2limit(sd, false); - break; - default: - return -EINVAL; - } - return 0; -} - -static void ad9389b_set_manual_pll_gear(struct v4l2_subdev *sd, u32 pixelclock) -{ - u8 gear; - - /* Workaround for TMDS PLL problem - * The TMDS PLL in AD9389b change gear when the chip is heated above a - * certain temperature. The output is disabled when the PLL change gear - * so the monitor has to lock on the signal again. A workaround for - * this is to use the manual PLL gears. This is a solution from Analog - * Devices that is not documented in the datasheets. - * 0x98 [7] = enable manual gearing. 0x98 [6:4] = gear - * - * The pixel frequency ranges are based on readout of the gear the - * automatic gearing selects for different pixel clocks - * (read from 0x9e [3:1]). - */ - - if (pixelclock > 140000000) - gear = 0xc0; /* 4th gear */ - else if (pixelclock > 117000000) - gear = 0xb0; /* 3rd gear */ - else if (pixelclock > 87000000) - gear = 0xa0; /* 2nd gear */ - else if (pixelclock > 60000000) - gear = 0x90; /* 1st gear */ - else - gear = 0x80; /* 0th gear */ - - ad9389b_wr_and_or(sd, 0x98, 0x0f, gear); -} - -/* ------------------------------ CTRL OPS ------------------------------ */ - -static int ad9389b_s_ctrl(struct v4l2_ctrl *ctrl) -{ - struct v4l2_subdev *sd = to_sd(ctrl); - struct ad9389b_state *state = get_ad9389b_state(sd); - - v4l2_dbg(1, debug, sd, - "%s: ctrl id: %d, ctrl->val %d\n", __func__, ctrl->id, ctrl->val); - - if (state->hdmi_mode_ctrl == ctrl) { - /* Set HDMI or DVI-D */ - ad9389b_wr_and_or(sd, 0xaf, 0xfd, - ctrl->val == V4L2_DV_TX_MODE_HDMI ? 0x02 : 0x00); - return 0; - } - if (state->rgb_quantization_range_ctrl == ctrl) - return ad9389b_set_rgb_quantization_mode(sd, ctrl); - return -EINVAL; -} - -static const struct v4l2_ctrl_ops ad9389b_ctrl_ops = { - .s_ctrl = ad9389b_s_ctrl, -}; - -/* ---------------------------- CORE OPS ------------------------------------------- */ - -#ifdef CONFIG_VIDEO_ADV_DEBUG -static int ad9389b_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg) -{ - reg->val = ad9389b_rd(sd, reg->reg & 0xff); - reg->size = 1; - return 0; -} - -static int ad9389b_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg) -{ - ad9389b_wr(sd, reg->reg & 0xff, reg->val & 0xff); - return 0; -} -#endif - -static int ad9389b_log_status(struct v4l2_subdev *sd) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - struct ad9389b_state_edid *edid = &state->edid; - - static const char * const states[] = { - "in reset", - "reading EDID", - "idle", - "initializing HDCP", - "HDCP enabled", - "initializing HDCP repeater", - "6", "7", "8", "9", "A", "B", "C", "D", "E", "F" - }; - static const char * const errors[] = { - "no error", - "bad receiver BKSV", - "Ri mismatch", - "Pj mismatch", - "i2c error", - "timed out", - "max repeater cascade exceeded", - "hash check failed", - "too many devices", - "9", "A", "B", "C", "D", "E", "F" - }; - - u8 manual_gear; - - v4l2_info(sd, "chip revision %d\n", state->chip_revision); - v4l2_info(sd, "power %s\n", state->power_on ? "on" : "off"); - v4l2_info(sd, "%s hotplug, %s Rx Sense, %s EDID (%d block(s))\n", - (ad9389b_rd(sd, 0x42) & MASK_AD9389B_HPD_DETECT) ? - "detected" : "no", - (ad9389b_rd(sd, 0x42) & MASK_AD9389B_MSEN_DETECT) ? - "detected" : "no", - edid->segments ? "found" : "no", edid->blocks); - v4l2_info(sd, "%s output %s\n", - (ad9389b_rd(sd, 0xaf) & 0x02) ? - "HDMI" : "DVI-D", - (ad9389b_rd(sd, 0xa1) & 0x3c) ? - "disabled" : "enabled"); - v4l2_info(sd, "ad9389b: %s\n", (ad9389b_rd(sd, 0xb8) & 0x40) ? - "encrypted" : "no encryption"); - v4l2_info(sd, "state: %s, error: %s, detect count: %u, msk/irq: %02x/%02x\n", - states[ad9389b_rd(sd, 0xc8) & 0xf], - errors[ad9389b_rd(sd, 0xc8) >> 4], - state->edid_detect_counter, - ad9389b_rd(sd, 0x94), ad9389b_rd(sd, 0x96)); - manual_gear = ad9389b_rd(sd, 0x98) & 0x80; - v4l2_info(sd, "ad9389b: RGB quantization: %s range\n", - ad9389b_rd(sd, 0x3b) & 0x01 ? "limited" : "full"); - v4l2_info(sd, "ad9389b: %s gear %d\n", - manual_gear ? "manual" : "automatic", - manual_gear ? ((ad9389b_rd(sd, 0x98) & 0x70) >> 4) : - ((ad9389b_rd(sd, 0x9e) & 0x0e) >> 1)); - if (ad9389b_rd(sd, 0xaf) & 0x02) { - /* HDMI only */ - u8 manual_cts = ad9389b_rd(sd, 0x0a) & 0x80; - u32 N = (ad9389b_rd(sd, 0x01) & 0xf) << 16 | - ad9389b_rd(sd, 0x02) << 8 | - ad9389b_rd(sd, 0x03); - u8 vic_detect = ad9389b_rd(sd, 0x3e) >> 2; - u8 vic_sent = ad9389b_rd(sd, 0x3d) & 0x3f; - u32 CTS; - - if (manual_cts) - CTS = (ad9389b_rd(sd, 0x07) & 0xf) << 16 | - ad9389b_rd(sd, 0x08) << 8 | - ad9389b_rd(sd, 0x09); - else - CTS = (ad9389b_rd(sd, 0x04) & 0xf) << 16 | - ad9389b_rd(sd, 0x05) << 8 | - ad9389b_rd(sd, 0x06); - N = (ad9389b_rd(sd, 0x01) & 0xf) << 16 | - ad9389b_rd(sd, 0x02) << 8 | - ad9389b_rd(sd, 0x03); - - v4l2_info(sd, "ad9389b: CTS %s mode: N %d, CTS %d\n", - manual_cts ? "manual" : "automatic", N, CTS); - - v4l2_info(sd, "ad9389b: VIC: detected %d, sent %d\n", - vic_detect, vic_sent); - } - if (state->dv_timings.type == V4L2_DV_BT_656_1120) - v4l2_print_dv_timings(sd->name, "timings: ", - &state->dv_timings, false); - else - v4l2_info(sd, "no timings set\n"); - return 0; -} - -/* Power up/down ad9389b */ -static int ad9389b_s_power(struct v4l2_subdev *sd, int on) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - struct ad9389b_platform_data *pdata = &state->pdata; - const int retries = 20; - int i; - - v4l2_dbg(1, debug, sd, "%s: power %s\n", __func__, on ? "on" : "off"); - - state->power_on = on; - - if (!on) { - /* Power down */ - ad9389b_wr_and_or(sd, 0x41, 0xbf, 0x40); - return true; - } - - /* Power up */ - /* The ad9389b does not always come up immediately. - Retry multiple times. */ - for (i = 0; i < retries; i++) { - ad9389b_wr_and_or(sd, 0x41, 0xbf, 0x0); - if ((ad9389b_rd(sd, 0x41) & 0x40) == 0) - break; - ad9389b_wr_and_or(sd, 0x41, 0xbf, 0x40); - msleep(10); - } - if (i == retries) { - v4l2_dbg(1, debug, sd, "failed to powerup the ad9389b\n"); - ad9389b_s_power(sd, 0); - return false; - } - if (i > 1) - v4l2_dbg(1, debug, sd, - "needed %d retries to powerup the ad9389b\n", i); - - /* Select chip: AD9389B */ - ad9389b_wr_and_or(sd, 0xba, 0xef, 0x10); - - /* Reserved registers that must be set according to REF_01 p. 11*/ - ad9389b_wr_and_or(sd, 0x98, 0xf0, 0x07); - ad9389b_wr(sd, 0x9c, 0x38); - ad9389b_wr_and_or(sd, 0x9d, 0xfc, 0x01); - - /* Differential output drive strength */ - if (pdata->diff_data_drive_strength > 0) - ad9389b_wr(sd, 0xa2, pdata->diff_data_drive_strength); - else - ad9389b_wr(sd, 0xa2, 0x87); - - if (pdata->diff_clk_drive_strength > 0) - ad9389b_wr(sd, 0xa3, pdata->diff_clk_drive_strength); - else - ad9389b_wr(sd, 0xa3, 0x87); - - ad9389b_wr(sd, 0x0a, 0x01); - ad9389b_wr(sd, 0xbb, 0xff); - - /* Set number of attempts to read the EDID */ - ad9389b_wr(sd, 0xc9, 0xf); - return true; -} - -/* Enable interrupts */ -static void ad9389b_set_isr(struct v4l2_subdev *sd, bool enable) -{ - u8 irqs = MASK_AD9389B_HPD_INT | MASK_AD9389B_MSEN_INT; - u8 irqs_rd; - int retries = 100; - - /* The datasheet says that the EDID ready interrupt should be - disabled if there is no hotplug. */ - if (!enable) - irqs = 0; - else if (ad9389b_have_hotplug(sd)) - irqs |= MASK_AD9389B_EDID_RDY_INT; - - /* - * This i2c write can fail (approx. 1 in 1000 writes). But it - * is essential that this register is correct, so retry it - * multiple times. - * - * Note that the i2c write does not report an error, but the readback - * clearly shows the wrong value. - */ - do { - ad9389b_wr(sd, 0x94, irqs); - irqs_rd = ad9389b_rd(sd, 0x94); - } while (retries-- && irqs_rd != irqs); - - if (irqs_rd != irqs) - v4l2_err(sd, "Could not set interrupts: hw failure?\n"); -} - -/* Interrupt handler */ -static int ad9389b_isr(struct v4l2_subdev *sd, u32 status, bool *handled) -{ - u8 irq_status; - - /* disable interrupts to prevent a race condition */ - ad9389b_set_isr(sd, false); - irq_status = ad9389b_rd(sd, 0x96); - /* clear detected interrupts */ - ad9389b_wr(sd, 0x96, irq_status); - /* enable interrupts */ - ad9389b_set_isr(sd, true); - - v4l2_dbg(1, debug, sd, "%s: irq_status 0x%x\n", __func__, irq_status); - - if (irq_status & (MASK_AD9389B_HPD_INT)) - ad9389b_check_monitor_present_status(sd); - if (irq_status & MASK_AD9389B_EDID_RDY_INT) - ad9389b_check_edid_status(sd); - - *handled = true; - return 0; -} - -static const struct v4l2_subdev_core_ops ad9389b_core_ops = { - .log_status = ad9389b_log_status, -#ifdef CONFIG_VIDEO_ADV_DEBUG - .g_register = ad9389b_g_register, - .s_register = ad9389b_s_register, -#endif - .s_power = ad9389b_s_power, - .interrupt_service_routine = ad9389b_isr, -}; - -/* ------------------------------ VIDEO OPS ------------------------------ */ - -/* Enable/disable ad9389b output */ -static int ad9389b_s_stream(struct v4l2_subdev *sd, int enable) -{ - v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis")); - - ad9389b_wr_and_or(sd, 0xa1, ~0x3c, (enable ? 0 : 0x3c)); - if (enable) { - ad9389b_check_monitor_present_status(sd); - } else { - ad9389b_s_power(sd, 0); - } - return 0; -} - -static const struct v4l2_dv_timings_cap ad9389b_timings_cap = { - .type = V4L2_DV_BT_656_1120, - /* keep this initialization for compatibility with GCC < 4.4.6 */ - .reserved = { 0 }, - V4L2_INIT_BT_TIMINGS(640, 1920, 350, 1200, 25000000, 170000000, - V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT | - V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT, - V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING | - V4L2_DV_BT_CAP_CUSTOM) -}; - -static int ad9389b_s_dv_timings(struct v4l2_subdev *sd, - struct v4l2_dv_timings *timings) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - - v4l2_dbg(1, debug, sd, "%s:\n", __func__); - - /* quick sanity check */ - if (!v4l2_valid_dv_timings(timings, &ad9389b_timings_cap, NULL, NULL)) - return -EINVAL; - - /* Fill the optional fields .standards and .flags in struct v4l2_dv_timings - if the format is one of the CEA or DMT timings. */ - v4l2_find_dv_timings_cap(timings, &ad9389b_timings_cap, 0, NULL, NULL); - - timings->bt.flags &= ~V4L2_DV_FL_REDUCED_FPS; - - /* save timings */ - state->dv_timings = *timings; - - /* update quantization range based on new dv_timings */ - ad9389b_set_rgb_quantization_mode(sd, state->rgb_quantization_range_ctrl); - - /* update PLL gear based on new dv_timings */ - if (state->pdata.tmds_pll_gear == AD9389B_TMDS_PLL_GEAR_SEMI_AUTOMATIC) - ad9389b_set_manual_pll_gear(sd, (u32)timings->bt.pixelclock); - - /* update AVI infoframe */ - ad9389b_set_IT_content_AVI_InfoFrame(sd); - - return 0; -} - -static int ad9389b_g_dv_timings(struct v4l2_subdev *sd, - struct v4l2_dv_timings *timings) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - - v4l2_dbg(1, debug, sd, "%s:\n", __func__); - - if (!timings) - return -EINVAL; - - *timings = state->dv_timings; - - return 0; -} - -static int ad9389b_enum_dv_timings(struct v4l2_subdev *sd, - struct v4l2_enum_dv_timings *timings) -{ - if (timings->pad != 0) - return -EINVAL; - - return v4l2_enum_dv_timings_cap(timings, &ad9389b_timings_cap, - NULL, NULL); -} - -static int ad9389b_dv_timings_cap(struct v4l2_subdev *sd, - struct v4l2_dv_timings_cap *cap) -{ - if (cap->pad != 0) - return -EINVAL; - - *cap = ad9389b_timings_cap; - return 0; -} - -static const struct v4l2_subdev_video_ops ad9389b_video_ops = { - .s_stream = ad9389b_s_stream, - .s_dv_timings = ad9389b_s_dv_timings, - .g_dv_timings = ad9389b_g_dv_timings, -}; - -/* ------------------------------ PAD OPS ------------------------------ */ - -static int ad9389b_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - - if (edid->pad != 0) - return -EINVAL; - if (edid->blocks == 0 || edid->blocks > 256) - return -EINVAL; - if (!state->edid.segments) { - v4l2_dbg(1, debug, sd, "EDID segment 0 not found\n"); - return -ENODATA; - } - if (edid->start_block >= state->edid.segments * 2) - return -E2BIG; - if (edid->blocks + edid->start_block >= state->edid.segments * 2) - edid->blocks = state->edid.segments * 2 - edid->start_block; - memcpy(edid->edid, &state->edid.data[edid->start_block * 128], - 128 * edid->blocks); - return 0; -} - -static const struct v4l2_subdev_pad_ops ad9389b_pad_ops = { - .get_edid = ad9389b_get_edid, - .enum_dv_timings = ad9389b_enum_dv_timings, - .dv_timings_cap = ad9389b_dv_timings_cap, -}; - -/* ------------------------------ AUDIO OPS ------------------------------ */ - -static int ad9389b_s_audio_stream(struct v4l2_subdev *sd, int enable) -{ - v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis")); - - if (enable) - ad9389b_wr_and_or(sd, 0x45, 0x3f, 0x80); - else - ad9389b_wr_and_or(sd, 0x45, 0x3f, 0x40); - - return 0; -} - -static int ad9389b_s_clock_freq(struct v4l2_subdev *sd, u32 freq) -{ - u32 N; - - switch (freq) { - case 32000: N = 4096; break; - case 44100: N = 6272; break; - case 48000: N = 6144; break; - case 88200: N = 12544; break; - case 96000: N = 12288; break; - case 176400: N = 25088; break; - case 192000: N = 24576; break; - default: - return -EINVAL; - } - - /* Set N (used with CTS to regenerate the audio clock) */ - ad9389b_wr(sd, 0x01, (N >> 16) & 0xf); - ad9389b_wr(sd, 0x02, (N >> 8) & 0xff); - ad9389b_wr(sd, 0x03, N & 0xff); - - return 0; -} - -static int ad9389b_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq) -{ - u32 i2s_sf; - - switch (freq) { - case 32000: i2s_sf = 0x30; break; - case 44100: i2s_sf = 0x00; break; - case 48000: i2s_sf = 0x20; break; - case 88200: i2s_sf = 0x80; break; - case 96000: i2s_sf = 0xa0; break; - case 176400: i2s_sf = 0xc0; break; - case 192000: i2s_sf = 0xe0; break; - default: - return -EINVAL; - } - - /* Set sampling frequency for I2S audio to 48 kHz */ - ad9389b_wr_and_or(sd, 0x15, 0xf, i2s_sf); - - return 0; -} - -static int ad9389b_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config) -{ - /* TODO based on input/output/config */ - /* TODO See datasheet "Programmers guide" p. 39-40 */ - - /* Only 2 channels in use for application */ - ad9389b_wr_and_or(sd, 0x50, 0x1f, 0x20); - /* Speaker mapping */ - ad9389b_wr(sd, 0x51, 0x00); - - /* TODO Where should this be placed? */ - /* 16 bit audio word length */ - ad9389b_wr_and_or(sd, 0x14, 0xf0, 0x02); - - return 0; -} - -static const struct v4l2_subdev_audio_ops ad9389b_audio_ops = { - .s_stream = ad9389b_s_audio_stream, - .s_clock_freq = ad9389b_s_clock_freq, - .s_i2s_clock_freq = ad9389b_s_i2s_clock_freq, - .s_routing = ad9389b_s_routing, -}; - -/* --------------------- SUBDEV OPS --------------------------------------- */ - -static const struct v4l2_subdev_ops ad9389b_ops = { - .core = &ad9389b_core_ops, - .video = &ad9389b_video_ops, - .audio = &ad9389b_audio_ops, - .pad = &ad9389b_pad_ops, -}; - -/* ----------------------------------------------------------------------- */ -static void ad9389b_dbg_dump_edid(int lvl, int debug, struct v4l2_subdev *sd, - int segment, u8 *buf) -{ - int i, j; - - if (debug < lvl) - return; - - v4l2_dbg(lvl, debug, sd, "edid segment %d\n", segment); - for (i = 0; i < 256; i += 16) { - u8 b[128]; - u8 *bp = b; - - if (i == 128) - v4l2_dbg(lvl, debug, sd, "\n"); - for (j = i; j < i + 16; j++) { - sprintf(bp, "0x%02x, ", buf[j]); - bp += 6; - } - bp[0] = '\0'; - v4l2_dbg(lvl, debug, sd, "%s\n", b); - } -} - -static void ad9389b_edid_handler(struct work_struct *work) -{ - struct delayed_work *dwork = to_delayed_work(work); - struct ad9389b_state *state = - container_of(dwork, struct ad9389b_state, edid_handler); - struct v4l2_subdev *sd = &state->sd; - struct ad9389b_edid_detect ed; - - v4l2_dbg(1, debug, sd, "%s:\n", __func__); - - if (ad9389b_check_edid_status(sd)) { - /* Return if we received the EDID. */ - return; - } - - if (ad9389b_have_hotplug(sd)) { - /* We must retry reading the EDID several times, it is possible - * that initially the EDID couldn't be read due to i2c errors - * (DVI connectors are particularly prone to this problem). */ - if (state->edid.read_retries) { - state->edid.read_retries--; - v4l2_dbg(1, debug, sd, "%s: edid read failed\n", __func__); - ad9389b_s_power(sd, false); - ad9389b_s_power(sd, true); - schedule_delayed_work(&state->edid_handler, EDID_DELAY); - return; - } - } - - /* We failed to read the EDID, so send an event for this. */ - ed.present = false; - ed.segment = ad9389b_rd(sd, 0xc4); - v4l2_subdev_notify(sd, AD9389B_EDID_DETECT, (void *)&ed); - v4l2_dbg(1, debug, sd, "%s: no edid found\n", __func__); -} - -static void ad9389b_audio_setup(struct v4l2_subdev *sd) -{ - v4l2_dbg(1, debug, sd, "%s\n", __func__); - - ad9389b_s_i2s_clock_freq(sd, 48000); - ad9389b_s_clock_freq(sd, 48000); - ad9389b_s_routing(sd, 0, 0, 0); -} - -/* Initial setup of AD9389b */ - -/* Configure hdmi transmitter. */ -static void ad9389b_setup(struct v4l2_subdev *sd) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - - v4l2_dbg(1, debug, sd, "%s\n", __func__); - - /* Input format: RGB 4:4:4 */ - ad9389b_wr_and_or(sd, 0x15, 0xf1, 0x0); - /* Output format: RGB 4:4:4 */ - ad9389b_wr_and_or(sd, 0x16, 0x3f, 0x0); - /* 1st order interpolation 4:2:2 -> 4:4:4 up conversion, - Aspect ratio: 16:9 */ - ad9389b_wr_and_or(sd, 0x17, 0xf9, 0x06); - /* Output format: RGB 4:4:4, Active Format Information is valid. */ - ad9389b_wr_and_or(sd, 0x45, 0xc7, 0x08); - /* Underscanned */ - ad9389b_wr_and_or(sd, 0x46, 0x3f, 0x80); - /* Setup video format */ - ad9389b_wr(sd, 0x3c, 0x0); - /* Active format aspect ratio: same as picure. */ - ad9389b_wr(sd, 0x47, 0x80); - /* No encryption */ - ad9389b_wr_and_or(sd, 0xaf, 0xef, 0x0); - /* Positive clk edge capture for input video clock */ - ad9389b_wr_and_or(sd, 0xba, 0x1f, 0x60); - - ad9389b_audio_setup(sd); - - v4l2_ctrl_handler_setup(&state->hdl); - - ad9389b_set_IT_content_AVI_InfoFrame(sd); -} - -static void ad9389b_notify_monitor_detect(struct v4l2_subdev *sd) -{ - struct ad9389b_monitor_detect mdt; - struct ad9389b_state *state = get_ad9389b_state(sd); - - mdt.present = state->have_monitor; - v4l2_subdev_notify(sd, AD9389B_MONITOR_DETECT, (void *)&mdt); -} - -static void ad9389b_update_monitor_present_status(struct v4l2_subdev *sd) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - /* read hotplug and rx-sense state */ - u8 status = ad9389b_rd(sd, 0x42); - - v4l2_dbg(1, debug, sd, "%s: status: 0x%x%s%s\n", - __func__, - status, - status & MASK_AD9389B_HPD_DETECT ? ", hotplug" : "", - status & MASK_AD9389B_MSEN_DETECT ? ", rx-sense" : ""); - - if (status & MASK_AD9389B_HPD_DETECT) { - v4l2_dbg(1, debug, sd, "%s: hotplug detected\n", __func__); - state->have_monitor = true; - if (!ad9389b_s_power(sd, true)) { - v4l2_dbg(1, debug, sd, - "%s: monitor detected, powerup failed\n", __func__); - return; - } - ad9389b_setup(sd); - ad9389b_notify_monitor_detect(sd); - state->edid.read_retries = EDID_MAX_RETRIES; - schedule_delayed_work(&state->edid_handler, EDID_DELAY); - } else if (!(status & MASK_AD9389B_HPD_DETECT)) { - v4l2_dbg(1, debug, sd, "%s: hotplug not detected\n", __func__); - state->have_monitor = false; - ad9389b_notify_monitor_detect(sd); - ad9389b_s_power(sd, false); - memset(&state->edid, 0, sizeof(struct ad9389b_state_edid)); - } - - /* update read only ctrls */ - v4l2_ctrl_s_ctrl(state->hotplug_ctrl, ad9389b_have_hotplug(sd) ? 0x1 : 0x0); - v4l2_ctrl_s_ctrl(state->rx_sense_ctrl, ad9389b_have_rx_sense(sd) ? 0x1 : 0x0); - v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0); - - /* update with setting from ctrls */ - ad9389b_s_ctrl(state->rgb_quantization_range_ctrl); - ad9389b_s_ctrl(state->hdmi_mode_ctrl); -} - -static void ad9389b_check_monitor_present_status(struct v4l2_subdev *sd) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - int retry = 0; - - ad9389b_update_monitor_present_status(sd); - - /* - * Rapid toggling of the hotplug may leave the chip powered off, - * even if we think it is on. In that case reset and power up again. - */ - while (state->power_on && (ad9389b_rd(sd, 0x41) & 0x40)) { - if (++retry > 5) { - v4l2_err(sd, "retried %d times, give up\n", retry); - return; - } - v4l2_dbg(1, debug, sd, "%s: reset and re-check status (%d)\n", __func__, retry); - ad9389b_notify_monitor_detect(sd); - cancel_delayed_work_sync(&state->edid_handler); - memset(&state->edid, 0, sizeof(struct ad9389b_state_edid)); - ad9389b_s_power(sd, false); - ad9389b_update_monitor_present_status(sd); - } -} - -static bool edid_block_verify_crc(u8 *edid_block) -{ - u8 sum = 0; - int i; - - for (i = 0; i < 128; i++) - sum += edid_block[i]; - return sum == 0; -} - -static bool edid_verify_crc(struct v4l2_subdev *sd, u32 segment) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - u32 blocks = state->edid.blocks; - u8 *data = state->edid.data; - - if (edid_block_verify_crc(&data[segment * 256])) { - if ((segment + 1) * 2 <= blocks) - return edid_block_verify_crc(&data[segment * 256 + 128]); - return true; - } - return false; -} - -static bool edid_verify_header(struct v4l2_subdev *sd, u32 segment) -{ - static const u8 hdmi_header[] = { - 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00 - }; - struct ad9389b_state *state = get_ad9389b_state(sd); - u8 *data = state->edid.data; - int i; - - if (segment) - return true; - - for (i = 0; i < ARRAY_SIZE(hdmi_header); i++) - if (data[i] != hdmi_header[i]) - return false; - - return true; -} - -static bool ad9389b_check_edid_status(struct v4l2_subdev *sd) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - struct ad9389b_edid_detect ed; - int segment; - u8 edidRdy = ad9389b_rd(sd, 0xc5); - - v4l2_dbg(1, debug, sd, "%s: edid ready (retries: %d)\n", - __func__, EDID_MAX_RETRIES - state->edid.read_retries); - - if (!(edidRdy & MASK_AD9389B_EDID_RDY)) - return false; - - segment = ad9389b_rd(sd, 0xc4); - if (segment >= EDID_MAX_SEGM) { - v4l2_err(sd, "edid segment number too big\n"); - return false; - } - v4l2_dbg(1, debug, sd, "%s: got segment %d\n", __func__, segment); - ad9389b_edid_rd(sd, 256, &state->edid.data[segment * 256]); - ad9389b_dbg_dump_edid(2, debug, sd, segment, - &state->edid.data[segment * 256]); - if (segment == 0) { - state->edid.blocks = state->edid.data[0x7e] + 1; - v4l2_dbg(1, debug, sd, "%s: %d blocks in total\n", - __func__, state->edid.blocks); - } - if (!edid_verify_crc(sd, segment) || - !edid_verify_header(sd, segment)) { - /* edid crc error, force reread of edid segment */ - v4l2_err(sd, "%s: edid crc or header error\n", __func__); - ad9389b_s_power(sd, false); - ad9389b_s_power(sd, true); - return false; - } - /* one more segment read ok */ - state->edid.segments = segment + 1; - if (((state->edid.data[0x7e] >> 1) + 1) > state->edid.segments) { - /* Request next EDID segment */ - v4l2_dbg(1, debug, sd, "%s: request segment %d\n", - __func__, state->edid.segments); - ad9389b_wr(sd, 0xc9, 0xf); - ad9389b_wr(sd, 0xc4, state->edid.segments); - state->edid.read_retries = EDID_MAX_RETRIES; - schedule_delayed_work(&state->edid_handler, EDID_DELAY); - return false; - } - - /* report when we have all segments but report only for segment 0 */ - ed.present = true; - ed.segment = 0; - v4l2_subdev_notify(sd, AD9389B_EDID_DETECT, (void *)&ed); - state->edid_detect_counter++; - v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0); - return ed.present; -} - -/* ----------------------------------------------------------------------- */ - -static void ad9389b_init_setup(struct v4l2_subdev *sd) -{ - struct ad9389b_state *state = get_ad9389b_state(sd); - struct ad9389b_state_edid *edid = &state->edid; - - v4l2_dbg(1, debug, sd, "%s\n", __func__); - - /* clear all interrupts */ - ad9389b_wr(sd, 0x96, 0xff); - - memset(edid, 0, sizeof(struct ad9389b_state_edid)); - state->have_monitor = false; - ad9389b_set_isr(sd, false); -} - -static int ad9389b_probe(struct i2c_client *client) -{ - const struct v4l2_dv_timings dv1080p60 = V4L2_DV_BT_CEA_1920X1080P60; - struct ad9389b_state *state; - struct ad9389b_platform_data *pdata = client->dev.platform_data; - struct v4l2_ctrl_handler *hdl; - struct v4l2_subdev *sd; - int err = -EIO; - - /* Check if the adapter supports the needed features */ - if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) - return -EIO; - - v4l_dbg(1, debug, client, "detecting ad9389b client on address 0x%x\n", - client->addr << 1); - - state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL); - if (!state) - return -ENOMEM; - - /* Platform data */ - if (pdata == NULL) { - v4l_err(client, "No platform data!\n"); - return -ENODEV; - } - memcpy(&state->pdata, pdata, sizeof(state->pdata)); - - sd = &state->sd; - v4l2_i2c_subdev_init(sd, client, &ad9389b_ops); - sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; - - hdl = &state->hdl; - v4l2_ctrl_handler_init(hdl, 5); - - state->hdmi_mode_ctrl = v4l2_ctrl_new_std_menu(hdl, &ad9389b_ctrl_ops, - V4L2_CID_DV_TX_MODE, V4L2_DV_TX_MODE_HDMI, - 0, V4L2_DV_TX_MODE_DVI_D); - state->hotplug_ctrl = v4l2_ctrl_new_std(hdl, NULL, - V4L2_CID_DV_TX_HOTPLUG, 0, 1, 0, 0); - state->rx_sense_ctrl = v4l2_ctrl_new_std(hdl, NULL, - V4L2_CID_DV_TX_RXSENSE, 0, 1, 0, 0); - state->have_edid0_ctrl = v4l2_ctrl_new_std(hdl, NULL, - V4L2_CID_DV_TX_EDID_PRESENT, 0, 1, 0, 0); - state->rgb_quantization_range_ctrl = - v4l2_ctrl_new_std_menu(hdl, &ad9389b_ctrl_ops, - V4L2_CID_DV_TX_RGB_RANGE, V4L2_DV_RGB_RANGE_FULL, - 0, V4L2_DV_RGB_RANGE_AUTO); - sd->ctrl_handler = hdl; - if (hdl->error) { - err = hdl->error; - - goto err_hdl; - } - state->pad.flags = MEDIA_PAD_FL_SINK; - sd->entity.function = MEDIA_ENT_F_DV_ENCODER; - err = media_entity_pads_init(&sd->entity, 1, &state->pad); - if (err) - goto err_hdl; - - state->chip_revision = ad9389b_rd(sd, 0x0); - if (state->chip_revision != 2) { - v4l2_err(sd, "chip_revision %d != 2\n", state->chip_revision); - err = -EIO; - goto err_entity; - } - v4l2_dbg(1, debug, sd, "reg 0x41 0x%x, chip version (reg 0x00) 0x%x\n", - ad9389b_rd(sd, 0x41), state->chip_revision); - - state->edid_i2c_client = i2c_new_dummy_device(client->adapter, (0x7e >> 1)); - if (IS_ERR(state->edid_i2c_client)) { - v4l2_err(sd, "failed to register edid i2c client\n"); - err = PTR_ERR(state->edid_i2c_client); - goto err_entity; - } - - INIT_DELAYED_WORK(&state->edid_handler, ad9389b_edid_handler); - state->dv_timings = dv1080p60; - - ad9389b_init_setup(sd); - ad9389b_set_isr(sd, true); - - v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name, - client->addr << 1, client->adapter->name); - return 0; - -err_entity: - media_entity_cleanup(&sd->entity); -err_hdl: - v4l2_ctrl_handler_free(&state->hdl); - return err; -} - -/* ----------------------------------------------------------------------- */ - -static void ad9389b_remove(struct i2c_client *client) -{ - struct v4l2_subdev *sd = i2c_get_clientdata(client); - struct ad9389b_state *state = get_ad9389b_state(sd); - - state->chip_revision = -1; - - v4l2_dbg(1, debug, sd, "%s removed @ 0x%x (%s)\n", client->name, - client->addr << 1, client->adapter->name); - - ad9389b_s_stream(sd, false); - ad9389b_s_audio_stream(sd, false); - ad9389b_init_setup(sd); - cancel_delayed_work_sync(&state->edid_handler); - i2c_unregister_device(state->edid_i2c_client); - v4l2_device_unregister_subdev(sd); - media_entity_cleanup(&sd->entity); - v4l2_ctrl_handler_free(sd->ctrl_handler); -} - -/* ----------------------------------------------------------------------- */ - -static const struct i2c_device_id ad9389b_id[] = { - { "ad9389b", 0 }, - { "ad9889b", 0 }, - { } -}; -MODULE_DEVICE_TABLE(i2c, ad9389b_id); - -static struct i2c_driver ad9389b_driver = { - .driver = { - .name = "ad9389b", - }, - .probe_new = ad9389b_probe, - .remove = ad9389b_remove, - .id_table = ad9389b_id, -}; - -module_i2c_driver(ad9389b_driver); |