--- /dev/null
+/*
+ * Analog Devices AD9389B/AD9889B video encoder driver
+ *
+ * Copyright 2012 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
+ *
+ * This program is free software; you may redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+/*
+ * 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-chip-ident.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+#include <media/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 i2c_reg_value {
+ u8 reg;
+ u8 value;
+};
+
+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 workqueue_struct *work_queue;
+ 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, "I2C Write Problem\n");
+ 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.standards & V4L2_DV_BT_STD_CEA861) {
+ /* CEA 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.standards & V4L2_DV_BT_STD_CEA861) {
+ /* cea format, RGB limited range (16-235) */
+ ad9389b_csc_rgb_full2limit(sd, true);
+ } else {
+ /* not cea 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)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ if (!v4l2_chip_match_i2c_client(client, ®->match))
+ return -EINVAL;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+ reg->val = ad9389b_rd(sd, reg->reg & 0xff);
+ reg->size = 1;
+ return 0;
+}
+
+static int ad9389b_s_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ if (!v4l2_chip_match_i2c_client(client, ®->match))
+ return -EINVAL;
+ if (!capable(CAP_SYS_ADMIN))
+ return -EPERM;
+ ad9389b_wr(sd, reg->reg & 0xff, reg->val & 0xff);
+ return 0;
+}
+#endif
+
+static int ad9389b_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_AD9389B, 0);
+}
+
+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);
+ if (state->have_monitor) {
+ 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 (state->have_monitor) {
+ 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) {
+ struct v4l2_bt_timings *bt = bt = &state->dv_timings.bt;
+ u32 frame_width = bt->width + bt->hfrontporch +
+ bt->hsync + bt->hbackporch;
+ u32 frame_height = bt->height + bt->vfrontporch +
+ bt->vsync + bt->vbackporch;
+ u32 frame_size = frame_width * frame_height;
+
+ v4l2_info(sd, "timings: %ux%u%s%u (%ux%u). Pix freq. = %u Hz. Polarities = 0x%x\n",
+ bt->width, bt->height, bt->interlaced ? "i" : "p",
+ frame_size > 0 ? (unsigned)bt->pixelclock / frame_size : 0,
+ frame_width, frame_height,
+ (unsigned)bt->pixelclock, bt->polarities);
+ } 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);
+
+ if (irq_status & (MASK_AD9389B_HPD_INT | MASK_AD9389B_MSEN_INT))
+ ad9389b_check_monitor_present_status(sd);
+ if (irq_status & MASK_AD9389B_EDID_RDY_INT)
+ ad9389b_check_edid_status(sd);
+
+ /* enable interrupts */
+ ad9389b_set_isr(sd, true);
+ *handled = true;
+ return 0;
+}
+
+static const struct v4l2_subdev_core_ops ad9389b_core_ops = {
+ .log_status = ad9389b_log_status,
+ .g_chip_ident = ad9389b_g_chip_ident,
+#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,
+};
+
+/* ------------------------------ PAD OPS ------------------------------ */
+
+static int ad9389b_get_edid(struct v4l2_subdev *sd, struct v4l2_subdev_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 (!edid->edid)
+ 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,
+};
+
+/* ------------------------------ VIDEO OPS ------------------------------ */
+
+/* Enable/disable ad9389b output */
+static int ad9389b_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct ad9389b_state *state = get_ad9389b_state(sd);
+
+ 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);
+ state->have_monitor = false;
+ }
+ return 0;
+}
+
+static const struct v4l2_dv_timings ad9389b_timings[] = {
+ V4L2_DV_BT_CEA_720X480P59_94,
+ V4L2_DV_BT_CEA_720X576P50,
+ V4L2_DV_BT_CEA_1280X720P24,
+ V4L2_DV_BT_CEA_1280X720P25,
+ V4L2_DV_BT_CEA_1280X720P30,
+ V4L2_DV_BT_CEA_1280X720P50,
+ V4L2_DV_BT_CEA_1280X720P60,
+ V4L2_DV_BT_CEA_1920X1080P24,
+ V4L2_DV_BT_CEA_1920X1080P25,
+ V4L2_DV_BT_CEA_1920X1080P30,
+ V4L2_DV_BT_CEA_1920X1080P50,
+ V4L2_DV_BT_CEA_1920X1080P60,
+
+ V4L2_DV_BT_DMT_640X350P85,
+ V4L2_DV_BT_DMT_640X400P85,
+ V4L2_DV_BT_DMT_720X400P85,
+ V4L2_DV_BT_DMT_640X480P60,
+ V4L2_DV_BT_DMT_640X480P72,
+ V4L2_DV_BT_DMT_640X480P75,
+ V4L2_DV_BT_DMT_640X480P85,
+ V4L2_DV_BT_DMT_800X600P56,
+ V4L2_DV_BT_DMT_800X600P60,
+ V4L2_DV_BT_DMT_800X600P72,
+ V4L2_DV_BT_DMT_800X600P75,
+ V4L2_DV_BT_DMT_800X600P85,
+ V4L2_DV_BT_DMT_848X480P60,
+ V4L2_DV_BT_DMT_1024X768P60,
+ V4L2_DV_BT_DMT_1024X768P70,
+ V4L2_DV_BT_DMT_1024X768P75,
+ V4L2_DV_BT_DMT_1024X768P85,
+ V4L2_DV_BT_DMT_1152X864P75,
+ V4L2_DV_BT_DMT_1280X768P60_RB,
+ V4L2_DV_BT_DMT_1280X768P60,
+ V4L2_DV_BT_DMT_1280X768P75,
+ V4L2_DV_BT_DMT_1280X768P85,
+ V4L2_DV_BT_DMT_1280X800P60_RB,
+ V4L2_DV_BT_DMT_1280X800P60,
+ V4L2_DV_BT_DMT_1280X800P75,
+ V4L2_DV_BT_DMT_1280X800P85,
+ V4L2_DV_BT_DMT_1280X960P60,
+ V4L2_DV_BT_DMT_1280X960P85,
+ V4L2_DV_BT_DMT_1280X1024P60,
+ V4L2_DV_BT_DMT_1280X1024P75,
+ V4L2_DV_BT_DMT_1280X1024P85,
+ V4L2_DV_BT_DMT_1360X768P60,
+ V4L2_DV_BT_DMT_1400X1050P60_RB,
+ V4L2_DV_BT_DMT_1400X1050P60,
+ V4L2_DV_BT_DMT_1400X1050P75,
+ V4L2_DV_BT_DMT_1400X1050P85,
+ V4L2_DV_BT_DMT_1440X900P60_RB,
+ V4L2_DV_BT_DMT_1440X900P60,
+ V4L2_DV_BT_DMT_1600X1200P60,
+ V4L2_DV_BT_DMT_1680X1050P60_RB,
+ V4L2_DV_BT_DMT_1680X1050P60,
+ V4L2_DV_BT_DMT_1792X1344P60,
+ V4L2_DV_BT_DMT_1856X1392P60,
+ V4L2_DV_BT_DMT_1920X1200P60_RB,
+ V4L2_DV_BT_DMT_1366X768P60,
+ V4L2_DV_BT_DMT_1920X1080P60,
+ {},
+};
+
+static int ad9389b_s_dv_timings(struct v4l2_subdev *sd,
+ struct v4l2_dv_timings *timings)
+{
+ struct ad9389b_state *state = get_ad9389b_state(sd);
+ int i;
+
+ v4l2_dbg(1, debug, sd, "%s:\n", __func__);
+
+ /* quick sanity check */
+ if (timings->type != V4L2_DV_BT_656_1120)
+ return -EINVAL;
+
+ if (timings->bt.interlaced)
+ return -EINVAL;
+ if (timings->bt.pixelclock < 27000000 ||
+ timings->bt.pixelclock > 170000000)
+ return -EINVAL;
+
+ /* Fill the optional fields .standards and .flags in struct v4l2_dv_timings
+ if the format is listed in ad9389b_timings[] */
+ for (i = 0; ad9389b_timings[i].bt.width; i++) {
+ if (v4l_match_dv_timings(timings, &ad9389b_timings[i], 0)) {
+ *timings = ad9389b_timings[i];
+ break;
+ }
+ }
+
+ 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->index >= ARRAY_SIZE(ad9389b_timings))
+ return -EINVAL;
+
+ memset(timings->reserved, 0, sizeof(timings->reserved));
+ timings->timings = ad9389b_timings[timings->index];
+ return 0;
+}
+
+static int ad9389b_dv_timings_cap(struct v4l2_subdev *sd,
+ struct v4l2_dv_timings_cap *cap)
+{
+ cap->type = V4L2_DV_BT_656_1120;
+ cap->bt.max_width = 1920;
+ cap->bt.max_height = 1200;
+ cap->bt.min_pixelclock = 27000000;
+ cap->bt.max_pixelclock = 170000000;
+ cap->bt.standards = V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
+ V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT;
+ cap->bt.capabilities = V4L2_DV_BT_CAP_PROGRESSIVE |
+ V4L2_DV_BT_CAP_REDUCED_BLANKING | V4L2_DV_BT_CAP_CUSTOM;
+ 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,
+ .enum_dv_timings = ad9389b_enum_dv_timings,
+ .dv_timings_cap = ad9389b_dv_timings_cap,
+};
+
+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--;
+ /* EDID read failed, trigger a retry */
+ ad9389b_wr(sd, 0xc9, 0xf);
+ queue_delayed_work(state->work_queue,
+ &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);
+ /* CSC fixed point: +/-2, 1st order interpolation 4:2:2 -> 4:4:4 up
+ conversion, Aspect ratio: 16:9 */
+ ad9389b_wr_and_or(sd, 0x17, 0xe1, 0x0e);
+ /* Disable pixel repetition and CSC */
+ ad9389b_wr_and_or(sd, 0x3b, 0x9e, 0x0);
+ /* 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_check_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) &&
+ ((status & MASK_AD9389B_MSEN_DETECT) || state->edid.segments)) {
+ v4l2_dbg(1, debug, sd,
+ "%s: hotplug and (rx-sense or edid)\n", __func__);
+ if (!state->have_monitor) {
+ v4l2_dbg(1, debug, sd, "%s: monitor detected\n", __func__);
+ state->have_monitor = true;
+ ad9389b_set_isr(sd, 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;
+ queue_delayed_work(state->work_queue,
+ &state->edid_handler, EDID_DELAY);
+ }
+ } else if (status & MASK_AD9389B_HPD_DETECT) {
+ v4l2_dbg(1, debug, sd, "%s: hotplug detected\n", __func__);
+ state->edid.read_retries = EDID_MAX_RETRIES;
+ queue_delayed_work(state->work_queue,
+ &state->edid_handler, EDID_DELAY);
+ } else if (!(status & MASK_AD9389B_HPD_DETECT)) {
+ v4l2_dbg(1, debug, sd, "%s: hotplug not detected\n", __func__);
+ if (state->have_monitor) {
+ v4l2_dbg(1, debug, sd, "%s: monitor 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);
+}
+
+static bool edid_block_verify_crc(u8 *edid_block)
+{
+ int i;
+ u8 sum = 0;
+
+ for (i = 0; i < 127; i++)
+ sum += *(edid_block + i);
+ return ((255 - sum + 1) == edid_block[127]);
+}
+
+static bool edid_segment_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 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_segment_verify_crc(sd, segment)) {
+ /* edid crc error, force reread of edid segment */
+ 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;
+ queue_delayed_work(state->work_queue,
+ &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 i2c_device_id *id)
+{
+ 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 = kzalloc(sizeof(struct ad9389b_state), GFP_KERNEL);
+ if (!state)
+ return -ENOMEM;
+
+ /* Platform data */
+ if (pdata == NULL) {
+ v4l_err(client, "No platform data!\n");
+ err = -ENODEV;
+ goto err_free;
+ }
+ 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);
+
+ /* private controls */
+
+ 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->hdmi_mode_ctrl->is_private = true;
+ state->hotplug_ctrl = v4l2_ctrl_new_std(hdl, NULL,
+ V4L2_CID_DV_TX_HOTPLUG, 0, 1, 0, 0);
+ state->hotplug_ctrl->is_private = true;
+ state->rx_sense_ctrl = v4l2_ctrl_new_std(hdl, NULL,
+ V4L2_CID_DV_TX_RXSENSE, 0, 1, 0, 0);
+ state->rx_sense_ctrl->is_private = true;
+ state->have_edid0_ctrl = v4l2_ctrl_new_std(hdl, NULL,
+ V4L2_CID_DV_TX_EDID_PRESENT, 0, 1, 0, 0);
+ state->have_edid0_ctrl->is_private = true;
+ 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);
+ state->rgb_quantization_range_ctrl->is_private = true;
+ sd->ctrl_handler = hdl;
+ if (hdl->error) {
+ err = hdl->error;
+
+ goto err_hdl;
+ }
+
+ state->pad.flags = MEDIA_PAD_FL_SINK;
+ err = media_entity_init(&sd->entity, 1, &state->pad, 0);
+ 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(client->adapter, (0x7e>>1));
+ if (state->edid_i2c_client == NULL) {
+ v4l2_err(sd, "failed to register edid i2c client\n");
+ goto err_entity;
+ }
+
+ state->work_queue = create_singlethread_workqueue(sd->name);
+ if (state->work_queue == NULL) {
+ v4l2_err(sd, "could not create workqueue\n");
+ goto err_unreg;
+ }
+
+ 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_unreg:
+ i2c_unregister_device(state->edid_i2c_client);
+err_entity:
+ media_entity_cleanup(&sd->entity);
+err_hdl:
+ v4l2_ctrl_handler_free(&state->hdl);
+err_free:
+ kfree(state);
+ return err;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static int 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(&state->edid_handler);
+ i2c_unregister_device(state->edid_i2c_client);
+ destroy_workqueue(state->work_queue);
+ v4l2_device_unregister_subdev(sd);
+ media_entity_cleanup(&sd->entity);
+ v4l2_ctrl_handler_free(sd->ctrl_handler);
+ kfree(get_ad9389b_state(sd));
+ return 0;
+}
+
+/* ----------------------------------------------------------------------- */
+
+static struct i2c_device_id ad9389b_id[] = {
+ { "ad9389b", V4L2_IDENT_AD9389B },
+ { "ad9889b", V4L2_IDENT_AD9389B },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ad9389b_id);
+
+static struct i2c_driver ad9389b_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "ad9389b",
+ },
+ .probe = ad9389b_probe,
+ .remove = ad9389b_remove,
+ .id_table = ad9389b_id,
+};
+
+module_i2c_driver(ad9389b_driver);
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commitdiff