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8f7a5f462a
Header claims GPL v2, so make the MODULE_LICENSE reflect that properly. Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
1587 lines
44 KiB
C
1587 lines
44 KiB
C
/*
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* Analog Devices ADV7511 HDMI Transmitter Device Driver
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*
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* Copyright 2013 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
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*
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* This program is free software; you may redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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#include <linux/delay.h>
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#include <linux/videodev2.h>
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#include <linux/gpio.h>
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#include <linux/workqueue.h>
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#include <linux/hdmi.h>
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#include <linux/v4l2-dv-timings.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-common.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-dv-timings.h>
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#include <media/adv7511.h>
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static int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "debug level (0-2)");
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MODULE_DESCRIPTION("Analog Devices ADV7511 HDMI Transmitter Device Driver");
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MODULE_AUTHOR("Hans Verkuil");
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MODULE_LICENSE("GPL v2");
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#define MASK_ADV7511_EDID_RDY_INT 0x04
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#define MASK_ADV7511_MSEN_INT 0x40
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#define MASK_ADV7511_HPD_INT 0x80
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#define MASK_ADV7511_HPD_DETECT 0x40
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#define MASK_ADV7511_MSEN_DETECT 0x20
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#define MASK_ADV7511_EDID_RDY 0x10
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#define EDID_MAX_RETRIES (8)
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#define EDID_DELAY 250
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#define EDID_MAX_SEGM 8
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#define ADV7511_MAX_WIDTH 1920
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#define ADV7511_MAX_HEIGHT 1200
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#define ADV7511_MIN_PIXELCLOCK 20000000
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#define ADV7511_MAX_PIXELCLOCK 225000000
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/*
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**********************************************************************
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*
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* Arrays with configuration parameters for the ADV7511
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*
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**********************************************************************
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*/
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struct i2c_reg_value {
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unsigned char reg;
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unsigned char value;
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};
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struct adv7511_state_edid {
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/* total number of blocks */
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u32 blocks;
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/* Number of segments read */
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u32 segments;
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u8 data[EDID_MAX_SEGM * 256];
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/* Number of EDID read retries left */
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unsigned read_retries;
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bool complete;
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};
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struct adv7511_state {
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struct adv7511_platform_data pdata;
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struct v4l2_subdev sd;
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struct media_pad pad;
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struct v4l2_ctrl_handler hdl;
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int chip_revision;
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u8 i2c_edid_addr;
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u8 i2c_cec_addr;
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u8 i2c_pktmem_addr;
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/* Is the adv7511 powered on? */
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bool power_on;
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/* Did we receive hotplug and rx-sense signals? */
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bool have_monitor;
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/* timings from s_dv_timings */
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struct v4l2_dv_timings dv_timings;
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u32 fmt_code;
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u32 colorspace;
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u32 ycbcr_enc;
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u32 quantization;
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u32 xfer_func;
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/* controls */
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struct v4l2_ctrl *hdmi_mode_ctrl;
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struct v4l2_ctrl *hotplug_ctrl;
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struct v4l2_ctrl *rx_sense_ctrl;
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struct v4l2_ctrl *have_edid0_ctrl;
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struct v4l2_ctrl *rgb_quantization_range_ctrl;
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struct i2c_client *i2c_edid;
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struct i2c_client *i2c_pktmem;
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struct adv7511_state_edid edid;
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/* Running counter of the number of detected EDIDs (for debugging) */
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unsigned edid_detect_counter;
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struct workqueue_struct *work_queue;
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struct delayed_work edid_handler; /* work entry */
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};
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static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd);
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static bool adv7511_check_edid_status(struct v4l2_subdev *sd);
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static void adv7511_setup(struct v4l2_subdev *sd);
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static int adv7511_s_i2s_clock_freq(struct v4l2_subdev *sd, u32 freq);
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static int adv7511_s_clock_freq(struct v4l2_subdev *sd, u32 freq);
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static const struct v4l2_dv_timings_cap adv7511_timings_cap = {
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.type = V4L2_DV_BT_656_1120,
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/* keep this initialization for compatibility with GCC < 4.4.6 */
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.reserved = { 0 },
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V4L2_INIT_BT_TIMINGS(0, ADV7511_MAX_WIDTH, 0, ADV7511_MAX_HEIGHT,
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ADV7511_MIN_PIXELCLOCK, ADV7511_MAX_PIXELCLOCK,
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V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT |
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V4L2_DV_BT_STD_GTF | V4L2_DV_BT_STD_CVT,
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V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_REDUCED_BLANKING |
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V4L2_DV_BT_CAP_CUSTOM)
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};
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static inline struct adv7511_state *get_adv7511_state(struct v4l2_subdev *sd)
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{
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return container_of(sd, struct adv7511_state, sd);
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}
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static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
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{
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return &container_of(ctrl->handler, struct adv7511_state, hdl)->sd;
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}
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/* ------------------------ I2C ----------------------------------------------- */
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static s32 adv_smbus_read_byte_data_check(struct i2c_client *client,
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u8 command, bool check)
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{
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union i2c_smbus_data data;
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if (!i2c_smbus_xfer(client->adapter, client->addr, client->flags,
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I2C_SMBUS_READ, command,
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I2C_SMBUS_BYTE_DATA, &data))
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return data.byte;
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if (check)
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v4l_err(client, "error reading %02x, %02x\n",
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client->addr, command);
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return -1;
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}
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static s32 adv_smbus_read_byte_data(struct i2c_client *client, u8 command)
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{
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int i;
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for (i = 0; i < 3; i++) {
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int ret = adv_smbus_read_byte_data_check(client, command, true);
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if (ret >= 0) {
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if (i)
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v4l_err(client, "read ok after %d retries\n", i);
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return ret;
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}
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}
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v4l_err(client, "read failed\n");
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return -1;
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}
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static int adv7511_rd(struct v4l2_subdev *sd, u8 reg)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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return adv_smbus_read_byte_data(client, reg);
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}
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static int adv7511_wr(struct v4l2_subdev *sd, u8 reg, u8 val)
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{
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struct i2c_client *client = v4l2_get_subdevdata(sd);
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int ret;
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int i;
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for (i = 0; i < 3; i++) {
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ret = i2c_smbus_write_byte_data(client, reg, val);
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if (ret == 0)
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return 0;
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}
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v4l2_err(sd, "%s: i2c write error\n", __func__);
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return ret;
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}
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/* To set specific bits in the register, a clear-mask is given (to be AND-ed),
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and then the value-mask (to be OR-ed). */
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static inline void adv7511_wr_and_or(struct v4l2_subdev *sd, u8 reg, u8 clr_mask, u8 val_mask)
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{
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adv7511_wr(sd, reg, (adv7511_rd(sd, reg) & clr_mask) | val_mask);
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}
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static int adv_smbus_read_i2c_block_data(struct i2c_client *client,
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u8 command, unsigned length, u8 *values)
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{
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union i2c_smbus_data data;
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int ret;
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if (length > I2C_SMBUS_BLOCK_MAX)
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length = I2C_SMBUS_BLOCK_MAX;
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data.block[0] = length;
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ret = i2c_smbus_xfer(client->adapter, client->addr, client->flags,
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I2C_SMBUS_READ, command,
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I2C_SMBUS_I2C_BLOCK_DATA, &data);
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memcpy(values, data.block + 1, length);
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return ret;
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}
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static inline void adv7511_edid_rd(struct v4l2_subdev *sd, u16 len, u8 *buf)
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{
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struct adv7511_state *state = get_adv7511_state(sd);
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int i;
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int err = 0;
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v4l2_dbg(1, debug, sd, "%s:\n", __func__);
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for (i = 0; !err && i < len; i += I2C_SMBUS_BLOCK_MAX)
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err = adv_smbus_read_i2c_block_data(state->i2c_edid, i,
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I2C_SMBUS_BLOCK_MAX, buf + i);
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if (err)
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v4l2_err(sd, "%s: i2c read error\n", __func__);
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}
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static int adv7511_pktmem_rd(struct v4l2_subdev *sd, u8 reg)
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{
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struct adv7511_state *state = get_adv7511_state(sd);
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return adv_smbus_read_byte_data(state->i2c_pktmem, reg);
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}
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static int adv7511_pktmem_wr(struct v4l2_subdev *sd, u8 reg, u8 val)
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{
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struct adv7511_state *state = get_adv7511_state(sd);
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int ret;
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int i;
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for (i = 0; i < 3; i++) {
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ret = i2c_smbus_write_byte_data(state->i2c_pktmem, reg, val);
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if (ret == 0)
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return 0;
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}
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v4l2_err(sd, "%s: i2c write error\n", __func__);
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return ret;
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}
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/* To set specific bits in the register, a clear-mask is given (to be AND-ed),
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and then the value-mask (to be OR-ed). */
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static inline void adv7511_pktmem_wr_and_or(struct v4l2_subdev *sd, u8 reg, u8 clr_mask, u8 val_mask)
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{
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adv7511_pktmem_wr(sd, reg, (adv7511_pktmem_rd(sd, reg) & clr_mask) | val_mask);
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}
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static inline bool adv7511_have_hotplug(struct v4l2_subdev *sd)
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{
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return adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT;
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}
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static inline bool adv7511_have_rx_sense(struct v4l2_subdev *sd)
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{
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return adv7511_rd(sd, 0x42) & MASK_ADV7511_MSEN_DETECT;
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}
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static void adv7511_csc_conversion_mode(struct v4l2_subdev *sd, u8 mode)
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{
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adv7511_wr_and_or(sd, 0x18, 0x9f, (mode & 0x3)<<5);
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}
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static void adv7511_csc_coeff(struct v4l2_subdev *sd,
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u16 A1, u16 A2, u16 A3, u16 A4,
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u16 B1, u16 B2, u16 B3, u16 B4,
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u16 C1, u16 C2, u16 C3, u16 C4)
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{
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/* A */
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adv7511_wr_and_or(sd, 0x18, 0xe0, A1>>8);
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adv7511_wr(sd, 0x19, A1);
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adv7511_wr_and_or(sd, 0x1A, 0xe0, A2>>8);
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adv7511_wr(sd, 0x1B, A2);
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adv7511_wr_and_or(sd, 0x1c, 0xe0, A3>>8);
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adv7511_wr(sd, 0x1d, A3);
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adv7511_wr_and_or(sd, 0x1e, 0xe0, A4>>8);
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adv7511_wr(sd, 0x1f, A4);
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/* B */
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adv7511_wr_and_or(sd, 0x20, 0xe0, B1>>8);
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adv7511_wr(sd, 0x21, B1);
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adv7511_wr_and_or(sd, 0x22, 0xe0, B2>>8);
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adv7511_wr(sd, 0x23, B2);
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adv7511_wr_and_or(sd, 0x24, 0xe0, B3>>8);
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adv7511_wr(sd, 0x25, B3);
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adv7511_wr_and_or(sd, 0x26, 0xe0, B4>>8);
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adv7511_wr(sd, 0x27, B4);
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/* C */
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adv7511_wr_and_or(sd, 0x28, 0xe0, C1>>8);
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adv7511_wr(sd, 0x29, C1);
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adv7511_wr_and_or(sd, 0x2A, 0xe0, C2>>8);
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adv7511_wr(sd, 0x2B, C2);
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adv7511_wr_and_or(sd, 0x2C, 0xe0, C3>>8);
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adv7511_wr(sd, 0x2D, C3);
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adv7511_wr_and_or(sd, 0x2E, 0xe0, C4>>8);
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adv7511_wr(sd, 0x2F, C4);
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}
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static void adv7511_csc_rgb_full2limit(struct v4l2_subdev *sd, bool enable)
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{
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if (enable) {
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u8 csc_mode = 0;
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adv7511_csc_conversion_mode(sd, csc_mode);
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adv7511_csc_coeff(sd,
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4096-564, 0, 0, 256,
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0, 4096-564, 0, 256,
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0, 0, 4096-564, 256);
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/* enable CSC */
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adv7511_wr_and_or(sd, 0x18, 0x7f, 0x80);
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/* AVI infoframe: Limited range RGB (16-235) */
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adv7511_wr_and_or(sd, 0x57, 0xf3, 0x04);
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} else {
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/* disable CSC */
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adv7511_wr_and_or(sd, 0x18, 0x7f, 0x0);
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/* AVI infoframe: Full range RGB (0-255) */
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adv7511_wr_and_or(sd, 0x57, 0xf3, 0x08);
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}
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}
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static void adv7511_set_IT_content_AVI_InfoFrame(struct v4l2_subdev *sd)
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{
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struct adv7511_state *state = get_adv7511_state(sd);
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if (state->dv_timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) {
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/* CE format, not IT */
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adv7511_wr_and_or(sd, 0x57, 0x7f, 0x00);
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} else {
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/* IT format */
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adv7511_wr_and_or(sd, 0x57, 0x7f, 0x80);
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}
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}
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static int adv7511_set_rgb_quantization_mode(struct v4l2_subdev *sd, struct v4l2_ctrl *ctrl)
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{
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switch (ctrl->val) {
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default:
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return -EINVAL;
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break;
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case V4L2_DV_RGB_RANGE_AUTO: {
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/* automatic */
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struct adv7511_state *state = get_adv7511_state(sd);
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if (state->dv_timings.bt.flags & V4L2_DV_FL_IS_CE_VIDEO) {
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/* CE format, RGB limited range (16-235) */
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adv7511_csc_rgb_full2limit(sd, true);
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} else {
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/* not CE format, RGB full range (0-255) */
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adv7511_csc_rgb_full2limit(sd, false);
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}
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}
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break;
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case V4L2_DV_RGB_RANGE_LIMITED:
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/* RGB limited range (16-235) */
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adv7511_csc_rgb_full2limit(sd, true);
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break;
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case V4L2_DV_RGB_RANGE_FULL:
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/* RGB full range (0-255) */
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adv7511_csc_rgb_full2limit(sd, false);
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break;
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}
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return 0;
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}
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/* ------------------------------ CTRL OPS ------------------------------ */
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static int adv7511_s_ctrl(struct v4l2_ctrl *ctrl)
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{
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struct v4l2_subdev *sd = to_sd(ctrl);
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struct adv7511_state *state = get_adv7511_state(sd);
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v4l2_dbg(1, debug, sd, "%s: ctrl id: %d, ctrl->val %d\n", __func__, ctrl->id, ctrl->val);
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if (state->hdmi_mode_ctrl == ctrl) {
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/* Set HDMI or DVI-D */
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adv7511_wr_and_or(sd, 0xaf, 0xfd, ctrl->val == V4L2_DV_TX_MODE_HDMI ? 0x02 : 0x00);
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return 0;
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}
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if (state->rgb_quantization_range_ctrl == ctrl)
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return adv7511_set_rgb_quantization_mode(sd, ctrl);
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return -EINVAL;
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}
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static const struct v4l2_ctrl_ops adv7511_ctrl_ops = {
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.s_ctrl = adv7511_s_ctrl,
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};
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/* ---------------------------- CORE OPS ------------------------------------------- */
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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static void adv7511_inv_register(struct v4l2_subdev *sd)
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{
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v4l2_info(sd, "0x000-0x0ff: Main Map\n");
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}
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static int adv7511_g_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
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{
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reg->size = 1;
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switch (reg->reg >> 8) {
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case 0:
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reg->val = adv7511_rd(sd, reg->reg & 0xff);
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break;
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default:
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v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
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adv7511_inv_register(sd);
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break;
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}
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return 0;
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}
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|
|
static int adv7511_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_register *reg)
|
|
{
|
|
switch (reg->reg >> 8) {
|
|
case 0:
|
|
adv7511_wr(sd, reg->reg & 0xff, reg->val & 0xff);
|
|
break;
|
|
default:
|
|
v4l2_info(sd, "Register %03llx not supported\n", reg->reg);
|
|
adv7511_inv_register(sd);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
struct adv7511_cfg_read_infoframe {
|
|
const char *desc;
|
|
u8 present_reg;
|
|
u8 present_mask;
|
|
u8 header[3];
|
|
u16 payload_addr;
|
|
};
|
|
|
|
static u8 hdmi_infoframe_checksum(u8 *ptr, size_t size)
|
|
{
|
|
u8 csum = 0;
|
|
size_t i;
|
|
|
|
/* compute checksum */
|
|
for (i = 0; i < size; i++)
|
|
csum += ptr[i];
|
|
|
|
return 256 - csum;
|
|
}
|
|
|
|
static void log_infoframe(struct v4l2_subdev *sd, const struct adv7511_cfg_read_infoframe *cri)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct device *dev = &client->dev;
|
|
union hdmi_infoframe frame;
|
|
u8 buffer[32];
|
|
u8 len;
|
|
int i;
|
|
|
|
if (!(adv7511_rd(sd, cri->present_reg) & cri->present_mask)) {
|
|
v4l2_info(sd, "%s infoframe not transmitted\n", cri->desc);
|
|
return;
|
|
}
|
|
|
|
memcpy(buffer, cri->header, sizeof(cri->header));
|
|
|
|
len = buffer[2];
|
|
|
|
if (len + 4 > sizeof(buffer)) {
|
|
v4l2_err(sd, "%s: invalid %s infoframe length %d\n", __func__, cri->desc, len);
|
|
return;
|
|
}
|
|
|
|
if (cri->payload_addr >= 0x100) {
|
|
for (i = 0; i < len; i++)
|
|
buffer[i + 4] = adv7511_pktmem_rd(sd, cri->payload_addr + i - 0x100);
|
|
} else {
|
|
for (i = 0; i < len; i++)
|
|
buffer[i + 4] = adv7511_rd(sd, cri->payload_addr + i);
|
|
}
|
|
buffer[3] = 0;
|
|
buffer[3] = hdmi_infoframe_checksum(buffer, len + 4);
|
|
|
|
if (hdmi_infoframe_unpack(&frame, buffer) < 0) {
|
|
v4l2_err(sd, "%s: unpack of %s infoframe failed\n", __func__, cri->desc);
|
|
return;
|
|
}
|
|
|
|
hdmi_infoframe_log(KERN_INFO, dev, &frame);
|
|
}
|
|
|
|
static void adv7511_log_infoframes(struct v4l2_subdev *sd)
|
|
{
|
|
static const struct adv7511_cfg_read_infoframe cri[] = {
|
|
{ "AVI", 0x44, 0x10, { 0x82, 2, 13 }, 0x55 },
|
|
{ "Audio", 0x44, 0x08, { 0x84, 1, 10 }, 0x73 },
|
|
{ "SDP", 0x40, 0x40, { 0x83, 1, 25 }, 0x103 },
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(cri); i++)
|
|
log_infoframe(sd, &cri[i]);
|
|
}
|
|
|
|
static int adv7511_log_status(struct v4l2_subdev *sd)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
struct adv7511_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"
|
|
};
|
|
|
|
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",
|
|
(adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT) ? "detected" : "no",
|
|
(adv7511_rd(sd, 0x42) & MASK_ADV7511_MSEN_DETECT) ? "detected" : "no",
|
|
edid->segments ? "found" : "no",
|
|
edid->blocks);
|
|
v4l2_info(sd, "%s output %s\n",
|
|
(adv7511_rd(sd, 0xaf) & 0x02) ?
|
|
"HDMI" : "DVI-D",
|
|
(adv7511_rd(sd, 0xa1) & 0x3c) ?
|
|
"disabled" : "enabled");
|
|
v4l2_info(sd, "state: %s, error: %s, detect count: %u, msk/irq: %02x/%02x\n",
|
|
states[adv7511_rd(sd, 0xc8) & 0xf],
|
|
errors[adv7511_rd(sd, 0xc8) >> 4], state->edid_detect_counter,
|
|
adv7511_rd(sd, 0x94), adv7511_rd(sd, 0x96));
|
|
v4l2_info(sd, "RGB quantization: %s range\n", adv7511_rd(sd, 0x18) & 0x80 ? "limited" : "full");
|
|
if (adv7511_rd(sd, 0xaf) & 0x02) {
|
|
/* HDMI only */
|
|
u8 manual_cts = adv7511_rd(sd, 0x0a) & 0x80;
|
|
u32 N = (adv7511_rd(sd, 0x01) & 0xf) << 16 |
|
|
adv7511_rd(sd, 0x02) << 8 |
|
|
adv7511_rd(sd, 0x03);
|
|
u8 vic_detect = adv7511_rd(sd, 0x3e) >> 2;
|
|
u8 vic_sent = adv7511_rd(sd, 0x3d) & 0x3f;
|
|
u32 CTS;
|
|
|
|
if (manual_cts)
|
|
CTS = (adv7511_rd(sd, 0x07) & 0xf) << 16 |
|
|
adv7511_rd(sd, 0x08) << 8 |
|
|
adv7511_rd(sd, 0x09);
|
|
else
|
|
CTS = (adv7511_rd(sd, 0x04) & 0xf) << 16 |
|
|
adv7511_rd(sd, 0x05) << 8 |
|
|
adv7511_rd(sd, 0x06);
|
|
v4l2_info(sd, "CTS %s mode: N %d, CTS %d\n",
|
|
manual_cts ? "manual" : "automatic", N, CTS);
|
|
v4l2_info(sd, "VIC: detected %d, sent %d\n",
|
|
vic_detect, vic_sent);
|
|
adv7511_log_infoframes(sd);
|
|
}
|
|
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");
|
|
v4l2_info(sd, "i2c edid addr: 0x%x\n", state->i2c_edid_addr);
|
|
v4l2_info(sd, "i2c cec addr: 0x%x\n", state->i2c_cec_addr);
|
|
v4l2_info(sd, "i2c pktmem addr: 0x%x\n", state->i2c_pktmem_addr);
|
|
return 0;
|
|
}
|
|
|
|
/* Power up/down adv7511 */
|
|
static int adv7511_s_power(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
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 */
|
|
adv7511_wr_and_or(sd, 0x41, 0xbf, 0x40);
|
|
return true;
|
|
}
|
|
|
|
/* Power up */
|
|
/* The adv7511 does not always come up immediately.
|
|
Retry multiple times. */
|
|
for (i = 0; i < retries; i++) {
|
|
adv7511_wr_and_or(sd, 0x41, 0xbf, 0x0);
|
|
if ((adv7511_rd(sd, 0x41) & 0x40) == 0)
|
|
break;
|
|
adv7511_wr_and_or(sd, 0x41, 0xbf, 0x40);
|
|
msleep(10);
|
|
}
|
|
if (i == retries) {
|
|
v4l2_dbg(1, debug, sd, "%s: failed to powerup the adv7511!\n", __func__);
|
|
adv7511_s_power(sd, 0);
|
|
return false;
|
|
}
|
|
if (i > 1)
|
|
v4l2_dbg(1, debug, sd, "%s: needed %d retries to powerup the adv7511\n", __func__, i);
|
|
|
|
/* Reserved registers that must be set */
|
|
adv7511_wr(sd, 0x98, 0x03);
|
|
adv7511_wr_and_or(sd, 0x9a, 0xfe, 0x70);
|
|
adv7511_wr(sd, 0x9c, 0x30);
|
|
adv7511_wr_and_or(sd, 0x9d, 0xfc, 0x01);
|
|
adv7511_wr(sd, 0xa2, 0xa4);
|
|
adv7511_wr(sd, 0xa3, 0xa4);
|
|
adv7511_wr(sd, 0xe0, 0xd0);
|
|
adv7511_wr(sd, 0xf9, 0x00);
|
|
|
|
adv7511_wr(sd, 0x43, state->i2c_edid_addr);
|
|
adv7511_wr(sd, 0x45, state->i2c_pktmem_addr);
|
|
|
|
/* Set number of attempts to read the EDID */
|
|
adv7511_wr(sd, 0xc9, 0xf);
|
|
return true;
|
|
}
|
|
|
|
/* Enable interrupts */
|
|
static void adv7511_set_isr(struct v4l2_subdev *sd, bool enable)
|
|
{
|
|
u8 irqs = MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT;
|
|
u8 irqs_rd;
|
|
int retries = 100;
|
|
|
|
v4l2_dbg(2, debug, sd, "%s: %s\n", __func__, enable ? "enable" : "disable");
|
|
|
|
/* The datasheet says that the EDID ready interrupt should be
|
|
disabled if there is no hotplug. */
|
|
if (!enable)
|
|
irqs = 0;
|
|
else if (adv7511_have_hotplug(sd))
|
|
irqs |= MASK_ADV7511_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 {
|
|
adv7511_wr(sd, 0x94, irqs);
|
|
irqs_rd = adv7511_rd(sd, 0x94);
|
|
} while (retries-- && irqs_rd != irqs);
|
|
|
|
if (irqs_rd == irqs)
|
|
return;
|
|
v4l2_err(sd, "Could not set interrupts: hw failure?\n");
|
|
}
|
|
|
|
/* Interrupt handler */
|
|
static int adv7511_isr(struct v4l2_subdev *sd, u32 status, bool *handled)
|
|
{
|
|
u8 irq_status;
|
|
|
|
/* disable interrupts to prevent a race condition */
|
|
adv7511_set_isr(sd, false);
|
|
irq_status = adv7511_rd(sd, 0x96);
|
|
/* clear detected interrupts */
|
|
adv7511_wr(sd, 0x96, irq_status);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s: irq 0x%x\n", __func__, irq_status);
|
|
|
|
if (irq_status & (MASK_ADV7511_HPD_INT | MASK_ADV7511_MSEN_INT))
|
|
adv7511_check_monitor_present_status(sd);
|
|
if (irq_status & MASK_ADV7511_EDID_RDY_INT)
|
|
adv7511_check_edid_status(sd);
|
|
|
|
/* enable interrupts */
|
|
adv7511_set_isr(sd, true);
|
|
|
|
if (handled)
|
|
*handled = true;
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_subdev_core_ops adv7511_core_ops = {
|
|
.log_status = adv7511_log_status,
|
|
#ifdef CONFIG_VIDEO_ADV_DEBUG
|
|
.g_register = adv7511_g_register,
|
|
.s_register = adv7511_s_register,
|
|
#endif
|
|
.s_power = adv7511_s_power,
|
|
.interrupt_service_routine = adv7511_isr,
|
|
};
|
|
|
|
/* ------------------------------ VIDEO OPS ------------------------------ */
|
|
|
|
/* Enable/disable adv7511 output */
|
|
static int adv7511_s_stream(struct v4l2_subdev *sd, int enable)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis"));
|
|
adv7511_wr_and_or(sd, 0xa1, ~0x3c, (enable ? 0 : 0x3c));
|
|
if (enable) {
|
|
adv7511_check_monitor_present_status(sd);
|
|
} else {
|
|
adv7511_s_power(sd, 0);
|
|
state->have_monitor = false;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int adv7511_s_dv_timings(struct v4l2_subdev *sd,
|
|
struct v4l2_dv_timings *timings)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s:\n", __func__);
|
|
|
|
/* quick sanity check */
|
|
if (!v4l2_valid_dv_timings(timings, &adv7511_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, &adv7511_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 */
|
|
adv7511_set_rgb_quantization_mode(sd, state->rgb_quantization_range_ctrl);
|
|
|
|
/* update AVI infoframe */
|
|
adv7511_set_IT_content_AVI_InfoFrame(sd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7511_g_dv_timings(struct v4l2_subdev *sd,
|
|
struct v4l2_dv_timings *timings)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s:\n", __func__);
|
|
|
|
if (!timings)
|
|
return -EINVAL;
|
|
|
|
*timings = state->dv_timings;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7511_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, &adv7511_timings_cap, NULL, NULL);
|
|
}
|
|
|
|
static int adv7511_dv_timings_cap(struct v4l2_subdev *sd,
|
|
struct v4l2_dv_timings_cap *cap)
|
|
{
|
|
if (cap->pad != 0)
|
|
return -EINVAL;
|
|
|
|
*cap = adv7511_timings_cap;
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_subdev_video_ops adv7511_video_ops = {
|
|
.s_stream = adv7511_s_stream,
|
|
.s_dv_timings = adv7511_s_dv_timings,
|
|
.g_dv_timings = adv7511_g_dv_timings,
|
|
};
|
|
|
|
/* ------------------------------ AUDIO OPS ------------------------------ */
|
|
static int adv7511_s_audio_stream(struct v4l2_subdev *sd, int enable)
|
|
{
|
|
v4l2_dbg(1, debug, sd, "%s: %sable\n", __func__, (enable ? "en" : "dis"));
|
|
|
|
if (enable)
|
|
adv7511_wr_and_or(sd, 0x4b, 0x3f, 0x80);
|
|
else
|
|
adv7511_wr_and_or(sd, 0x4b, 0x3f, 0x40);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7511_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) */
|
|
adv7511_wr(sd, 0x01, (N >> 16) & 0xf);
|
|
adv7511_wr(sd, 0x02, (N >> 8) & 0xff);
|
|
adv7511_wr(sd, 0x03, N & 0xff);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7511_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 */
|
|
adv7511_wr_and_or(sd, 0x15, 0xf, i2s_sf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7511_s_routing(struct v4l2_subdev *sd, u32 input, u32 output, u32 config)
|
|
{
|
|
/* Only 2 channels in use for application */
|
|
adv7511_wr_and_or(sd, 0x73, 0xf8, 0x1);
|
|
/* Speaker mapping */
|
|
adv7511_wr(sd, 0x76, 0x00);
|
|
|
|
/* 16 bit audio word length */
|
|
adv7511_wr_and_or(sd, 0x14, 0xf0, 0x02);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_subdev_audio_ops adv7511_audio_ops = {
|
|
.s_stream = adv7511_s_audio_stream,
|
|
.s_clock_freq = adv7511_s_clock_freq,
|
|
.s_i2s_clock_freq = adv7511_s_i2s_clock_freq,
|
|
.s_routing = adv7511_s_routing,
|
|
};
|
|
|
|
/* ---------------------------- PAD OPS ------------------------------------- */
|
|
|
|
static int adv7511_get_edid(struct v4l2_subdev *sd, struct v4l2_edid *edid)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
|
|
memset(edid->reserved, 0, sizeof(edid->reserved));
|
|
|
|
if (edid->pad != 0)
|
|
return -EINVAL;
|
|
|
|
if (edid->start_block == 0 && edid->blocks == 0) {
|
|
edid->blocks = state->edid.segments * 2;
|
|
return 0;
|
|
}
|
|
|
|
if (state->edid.segments == 0)
|
|
return -ENODATA;
|
|
|
|
if (edid->start_block >= state->edid.segments * 2)
|
|
return -EINVAL;
|
|
|
|
if (edid->start_block + edid->blocks > 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 int adv7511_enum_mbus_code(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
|
{
|
|
if (code->pad != 0)
|
|
return -EINVAL;
|
|
|
|
switch (code->index) {
|
|
case 0:
|
|
code->code = MEDIA_BUS_FMT_RGB888_1X24;
|
|
break;
|
|
case 1:
|
|
code->code = MEDIA_BUS_FMT_YUYV8_1X16;
|
|
break;
|
|
case 2:
|
|
code->code = MEDIA_BUS_FMT_UYVY8_1X16;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void adv7511_fill_format(struct adv7511_state *state,
|
|
struct v4l2_mbus_framefmt *format)
|
|
{
|
|
memset(format, 0, sizeof(*format));
|
|
|
|
format->width = state->dv_timings.bt.width;
|
|
format->height = state->dv_timings.bt.height;
|
|
format->field = V4L2_FIELD_NONE;
|
|
}
|
|
|
|
static int adv7511_get_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *format)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
|
|
if (format->pad != 0)
|
|
return -EINVAL;
|
|
|
|
adv7511_fill_format(state, &format->format);
|
|
|
|
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
struct v4l2_mbus_framefmt *fmt;
|
|
|
|
fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
|
|
format->format.code = fmt->code;
|
|
format->format.colorspace = fmt->colorspace;
|
|
format->format.ycbcr_enc = fmt->ycbcr_enc;
|
|
format->format.quantization = fmt->quantization;
|
|
format->format.xfer_func = fmt->xfer_func;
|
|
} else {
|
|
format->format.code = state->fmt_code;
|
|
format->format.colorspace = state->colorspace;
|
|
format->format.ycbcr_enc = state->ycbcr_enc;
|
|
format->format.quantization = state->quantization;
|
|
format->format.xfer_func = state->xfer_func;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adv7511_set_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *format)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
/*
|
|
* Bitfield namings come the CEA-861-F standard, table 8 "Auxiliary
|
|
* Video Information (AVI) InfoFrame Format"
|
|
*
|
|
* c = Colorimetry
|
|
* ec = Extended Colorimetry
|
|
* y = RGB or YCbCr
|
|
* q = RGB Quantization Range
|
|
* yq = YCC Quantization Range
|
|
*/
|
|
u8 c = HDMI_COLORIMETRY_NONE;
|
|
u8 ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
|
|
u8 y = HDMI_COLORSPACE_RGB;
|
|
u8 q = HDMI_QUANTIZATION_RANGE_DEFAULT;
|
|
u8 yq = HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
|
|
|
|
if (format->pad != 0)
|
|
return -EINVAL;
|
|
switch (format->format.code) {
|
|
case MEDIA_BUS_FMT_UYVY8_1X16:
|
|
case MEDIA_BUS_FMT_YUYV8_1X16:
|
|
case MEDIA_BUS_FMT_RGB888_1X24:
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
adv7511_fill_format(state, &format->format);
|
|
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
struct v4l2_mbus_framefmt *fmt;
|
|
|
|
fmt = v4l2_subdev_get_try_format(sd, cfg, format->pad);
|
|
fmt->code = format->format.code;
|
|
fmt->colorspace = format->format.colorspace;
|
|
fmt->ycbcr_enc = format->format.ycbcr_enc;
|
|
fmt->quantization = format->format.quantization;
|
|
fmt->xfer_func = format->format.xfer_func;
|
|
return 0;
|
|
}
|
|
|
|
switch (format->format.code) {
|
|
case MEDIA_BUS_FMT_UYVY8_1X16:
|
|
adv7511_wr_and_or(sd, 0x15, 0xf0, 0x01);
|
|
adv7511_wr_and_or(sd, 0x16, 0x03, 0xb8);
|
|
y = HDMI_COLORSPACE_YUV422;
|
|
break;
|
|
case MEDIA_BUS_FMT_YUYV8_1X16:
|
|
adv7511_wr_and_or(sd, 0x15, 0xf0, 0x01);
|
|
adv7511_wr_and_or(sd, 0x16, 0x03, 0xbc);
|
|
y = HDMI_COLORSPACE_YUV422;
|
|
break;
|
|
case MEDIA_BUS_FMT_RGB888_1X24:
|
|
default:
|
|
adv7511_wr_and_or(sd, 0x15, 0xf0, 0x00);
|
|
adv7511_wr_and_or(sd, 0x16, 0x03, 0x00);
|
|
break;
|
|
}
|
|
state->fmt_code = format->format.code;
|
|
state->colorspace = format->format.colorspace;
|
|
state->ycbcr_enc = format->format.ycbcr_enc;
|
|
state->quantization = format->format.quantization;
|
|
state->xfer_func = format->format.xfer_func;
|
|
|
|
switch (format->format.colorspace) {
|
|
case V4L2_COLORSPACE_ADOBERGB:
|
|
c = HDMI_COLORIMETRY_EXTENDED;
|
|
ec = y ? HDMI_EXTENDED_COLORIMETRY_ADOBE_YCC_601 :
|
|
HDMI_EXTENDED_COLORIMETRY_ADOBE_RGB;
|
|
break;
|
|
case V4L2_COLORSPACE_SMPTE170M:
|
|
c = y ? HDMI_COLORIMETRY_ITU_601 : HDMI_COLORIMETRY_NONE;
|
|
if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_XV601) {
|
|
c = HDMI_COLORIMETRY_EXTENDED;
|
|
ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
|
|
}
|
|
break;
|
|
case V4L2_COLORSPACE_REC709:
|
|
c = y ? HDMI_COLORIMETRY_ITU_709 : HDMI_COLORIMETRY_NONE;
|
|
if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_XV709) {
|
|
c = HDMI_COLORIMETRY_EXTENDED;
|
|
ec = HDMI_EXTENDED_COLORIMETRY_XV_YCC_709;
|
|
}
|
|
break;
|
|
case V4L2_COLORSPACE_SRGB:
|
|
c = y ? HDMI_COLORIMETRY_EXTENDED : HDMI_COLORIMETRY_NONE;
|
|
ec = y ? HDMI_EXTENDED_COLORIMETRY_S_YCC_601 :
|
|
HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
|
|
break;
|
|
case V4L2_COLORSPACE_BT2020:
|
|
c = HDMI_COLORIMETRY_EXTENDED;
|
|
if (y && format->format.ycbcr_enc == V4L2_YCBCR_ENC_BT2020_CONST_LUM)
|
|
ec = 5; /* Not yet available in hdmi.h */
|
|
else
|
|
ec = 6; /* Not yet available in hdmi.h */
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* CEA-861-F says that for RGB formats the YCC range must match the
|
|
* RGB range, although sources should ignore the YCC range.
|
|
*
|
|
* The RGB quantization range shouldn't be non-zero if the EDID doesn't
|
|
* have the Q bit set in the Video Capabilities Data Block, however this
|
|
* isn't checked at the moment. The assumption is that the application
|
|
* knows the EDID and can detect this.
|
|
*
|
|
* The same is true for the YCC quantization range: non-standard YCC
|
|
* quantization ranges should only be sent if the EDID has the YQ bit
|
|
* set in the Video Capabilities Data Block.
|
|
*/
|
|
switch (format->format.quantization) {
|
|
case V4L2_QUANTIZATION_FULL_RANGE:
|
|
q = y ? HDMI_QUANTIZATION_RANGE_DEFAULT :
|
|
HDMI_QUANTIZATION_RANGE_FULL;
|
|
yq = q ? q - 1 : HDMI_YCC_QUANTIZATION_RANGE_FULL;
|
|
break;
|
|
case V4L2_QUANTIZATION_LIM_RANGE:
|
|
q = y ? HDMI_QUANTIZATION_RANGE_DEFAULT :
|
|
HDMI_QUANTIZATION_RANGE_LIMITED;
|
|
yq = q ? q - 1 : HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
|
|
break;
|
|
}
|
|
|
|
adv7511_wr_and_or(sd, 0x4a, 0xbf, 0);
|
|
adv7511_wr_and_or(sd, 0x55, 0x9f, y << 5);
|
|
adv7511_wr_and_or(sd, 0x56, 0x3f, c << 6);
|
|
adv7511_wr_and_or(sd, 0x57, 0x83, (ec << 4) | (q << 2));
|
|
adv7511_wr_and_or(sd, 0x59, 0x0f, yq << 4);
|
|
adv7511_wr_and_or(sd, 0x4a, 0xff, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct v4l2_subdev_pad_ops adv7511_pad_ops = {
|
|
.get_edid = adv7511_get_edid,
|
|
.enum_mbus_code = adv7511_enum_mbus_code,
|
|
.get_fmt = adv7511_get_fmt,
|
|
.set_fmt = adv7511_set_fmt,
|
|
.enum_dv_timings = adv7511_enum_dv_timings,
|
|
.dv_timings_cap = adv7511_dv_timings_cap,
|
|
};
|
|
|
|
/* --------------------- SUBDEV OPS --------------------------------------- */
|
|
|
|
static const struct v4l2_subdev_ops adv7511_ops = {
|
|
.core = &adv7511_core_ops,
|
|
.pad = &adv7511_pad_ops,
|
|
.video = &adv7511_video_ops,
|
|
.audio = &adv7511_audio_ops,
|
|
};
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
static void adv7511_dbg_dump_edid(int lvl, int debug, struct v4l2_subdev *sd, int segment, u8 *buf)
|
|
{
|
|
if (debug >= lvl) {
|
|
int i, j;
|
|
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 adv7511_edid_handler(struct work_struct *work)
|
|
{
|
|
struct delayed_work *dwork = to_delayed_work(work);
|
|
struct adv7511_state *state = container_of(dwork, struct adv7511_state, edid_handler);
|
|
struct v4l2_subdev *sd = &state->sd;
|
|
struct adv7511_edid_detect ed;
|
|
|
|
v4l2_dbg(1, debug, sd, "%s:\n", __func__);
|
|
|
|
if (adv7511_check_edid_status(sd)) {
|
|
/* Return if we received the EDID. */
|
|
return;
|
|
}
|
|
|
|
if (adv7511_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__);
|
|
state->have_monitor = false;
|
|
adv7511_s_power(sd, false);
|
|
adv7511_s_power(sd, true);
|
|
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 = adv7511_rd(sd, 0xc4);
|
|
v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
|
|
v4l2_dbg(1, debug, sd, "%s: no edid found\n", __func__);
|
|
}
|
|
|
|
static void adv7511_audio_setup(struct v4l2_subdev *sd)
|
|
{
|
|
v4l2_dbg(1, debug, sd, "%s\n", __func__);
|
|
|
|
adv7511_s_i2s_clock_freq(sd, 48000);
|
|
adv7511_s_clock_freq(sd, 48000);
|
|
adv7511_s_routing(sd, 0, 0, 0);
|
|
}
|
|
|
|
/* Configure hdmi transmitter. */
|
|
static void adv7511_setup(struct v4l2_subdev *sd)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
v4l2_dbg(1, debug, sd, "%s\n", __func__);
|
|
|
|
/* Input format: RGB 4:4:4 */
|
|
adv7511_wr_and_or(sd, 0x15, 0xf0, 0x0);
|
|
/* Output format: RGB 4:4:4 */
|
|
adv7511_wr_and_or(sd, 0x16, 0x7f, 0x0);
|
|
/* 1st order interpolation 4:2:2 -> 4:4:4 up conversion, Aspect ratio: 16:9 */
|
|
adv7511_wr_and_or(sd, 0x17, 0xf9, 0x06);
|
|
/* Disable pixel repetition */
|
|
adv7511_wr_and_or(sd, 0x3b, 0x9f, 0x0);
|
|
/* Disable CSC */
|
|
adv7511_wr_and_or(sd, 0x18, 0x7f, 0x0);
|
|
/* Output format: RGB 4:4:4, Active Format Information is valid,
|
|
* underscanned */
|
|
adv7511_wr_and_or(sd, 0x55, 0x9c, 0x12);
|
|
/* AVI Info frame packet enable, Audio Info frame disable */
|
|
adv7511_wr_and_or(sd, 0x44, 0xe7, 0x10);
|
|
/* Colorimetry, Active format aspect ratio: same as picure. */
|
|
adv7511_wr(sd, 0x56, 0xa8);
|
|
/* No encryption */
|
|
adv7511_wr_and_or(sd, 0xaf, 0xed, 0x0);
|
|
|
|
/* Positive clk edge capture for input video clock */
|
|
adv7511_wr_and_or(sd, 0xba, 0x1f, 0x60);
|
|
|
|
adv7511_audio_setup(sd);
|
|
|
|
v4l2_ctrl_handler_setup(&state->hdl);
|
|
}
|
|
|
|
static void adv7511_notify_monitor_detect(struct v4l2_subdev *sd)
|
|
{
|
|
struct adv7511_monitor_detect mdt;
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
|
|
mdt.present = state->have_monitor;
|
|
v4l2_subdev_notify(sd, ADV7511_MONITOR_DETECT, (void *)&mdt);
|
|
}
|
|
|
|
static void adv7511_check_monitor_present_status(struct v4l2_subdev *sd)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
/* read hotplug and rx-sense state */
|
|
u8 status = adv7511_rd(sd, 0x42);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s: status: 0x%x%s%s\n",
|
|
__func__,
|
|
status,
|
|
status & MASK_ADV7511_HPD_DETECT ? ", hotplug" : "",
|
|
status & MASK_ADV7511_MSEN_DETECT ? ", rx-sense" : "");
|
|
|
|
/* update read only ctrls */
|
|
v4l2_ctrl_s_ctrl(state->hotplug_ctrl, adv7511_have_hotplug(sd) ? 0x1 : 0x0);
|
|
v4l2_ctrl_s_ctrl(state->rx_sense_ctrl, adv7511_have_rx_sense(sd) ? 0x1 : 0x0);
|
|
v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0);
|
|
|
|
if ((status & MASK_ADV7511_HPD_DETECT) && ((status & MASK_ADV7511_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;
|
|
adv7511_set_isr(sd, true);
|
|
if (!adv7511_s_power(sd, true)) {
|
|
v4l2_dbg(1, debug, sd, "%s: monitor detected, powerup failed\n", __func__);
|
|
return;
|
|
}
|
|
adv7511_setup(sd);
|
|
adv7511_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_ADV7511_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_ADV7511_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;
|
|
adv7511_notify_monitor_detect(sd);
|
|
}
|
|
adv7511_s_power(sd, false);
|
|
memset(&state->edid, 0, sizeof(struct adv7511_state_edid));
|
|
}
|
|
}
|
|
|
|
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 adv7511_state *state = get_adv7511_state(sd);
|
|
u32 blocks = state->edid.blocks;
|
|
u8 *data = state->edid.data;
|
|
|
|
if (!edid_block_verify_crc(&data[segment * 256]))
|
|
return false;
|
|
if ((segment + 1) * 2 <= blocks)
|
|
return edid_block_verify_crc(&data[segment * 256 + 128]);
|
|
return true;
|
|
}
|
|
|
|
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 adv7511_state *state = get_adv7511_state(sd);
|
|
u8 *data = state->edid.data;
|
|
|
|
if (segment != 0)
|
|
return true;
|
|
return !memcmp(data, hdmi_header, sizeof(hdmi_header));
|
|
}
|
|
|
|
static bool adv7511_check_edid_status(struct v4l2_subdev *sd)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
u8 edidRdy = adv7511_rd(sd, 0xc5);
|
|
|
|
v4l2_dbg(1, debug, sd, "%s: edid ready (retries: %d)\n",
|
|
__func__, EDID_MAX_RETRIES - state->edid.read_retries);
|
|
|
|
if (state->edid.complete)
|
|
return true;
|
|
|
|
if (edidRdy & MASK_ADV7511_EDID_RDY) {
|
|
int segment = adv7511_rd(sd, 0xc4);
|
|
struct adv7511_edid_detect ed;
|
|
|
|
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);
|
|
adv7511_edid_rd(sd, 256, &state->edid.data[segment * 256]);
|
|
adv7511_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__);
|
|
state->have_monitor = false;
|
|
adv7511_s_power(sd, false);
|
|
adv7511_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);
|
|
adv7511_wr(sd, 0xc9, 0xf);
|
|
adv7511_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;
|
|
}
|
|
|
|
v4l2_dbg(1, debug, sd, "%s: edid complete with %d segment(s)\n", __func__, state->edid.segments);
|
|
state->edid.complete = true;
|
|
|
|
/* report when we have all segments
|
|
but report only for segment 0
|
|
*/
|
|
ed.present = true;
|
|
ed.segment = 0;
|
|
state->edid_detect_counter++;
|
|
v4l2_ctrl_s_ctrl(state->have_edid0_ctrl, state->edid.segments ? 0x1 : 0x0);
|
|
v4l2_subdev_notify(sd, ADV7511_EDID_DETECT, (void *)&ed);
|
|
return ed.present;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
/* Setup ADV7511 */
|
|
static void adv7511_init_setup(struct v4l2_subdev *sd)
|
|
{
|
|
struct adv7511_state *state = get_adv7511_state(sd);
|
|
struct adv7511_state_edid *edid = &state->edid;
|
|
|
|
v4l2_dbg(1, debug, sd, "%s\n", __func__);
|
|
|
|
/* clear all interrupts */
|
|
adv7511_wr(sd, 0x96, 0xff);
|
|
/*
|
|
* Stop HPD from resetting a lot of registers.
|
|
* It might leave the chip in a partly un-initialized state,
|
|
* in particular with regards to hotplug bounces.
|
|
*/
|
|
adv7511_wr_and_or(sd, 0xd6, 0x3f, 0xc0);
|
|
memset(edid, 0, sizeof(struct adv7511_state_edid));
|
|
state->have_monitor = false;
|
|
adv7511_set_isr(sd, false);
|
|
adv7511_s_stream(sd, false);
|
|
adv7511_s_audio_stream(sd, false);
|
|
}
|
|
|
|
static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id *id)
|
|
{
|
|
struct adv7511_state *state;
|
|
struct adv7511_platform_data *pdata = client->dev.platform_data;
|
|
struct v4l2_ctrl_handler *hdl;
|
|
struct v4l2_subdev *sd;
|
|
u8 chip_id[2];
|
|
int err = -EIO;
|
|
|
|
/* Check if the adapter supports the needed features */
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -EIO;
|
|
|
|
state = devm_kzalloc(&client->dev, sizeof(struct adv7511_state), GFP_KERNEL);
|
|
if (!state)
|
|
return -ENOMEM;
|
|
|
|
/* Platform data */
|
|
if (!pdata) {
|
|
v4l_err(client, "No platform data!\n");
|
|
return -ENODEV;
|
|
}
|
|
memcpy(&state->pdata, pdata, sizeof(state->pdata));
|
|
state->fmt_code = MEDIA_BUS_FMT_RGB888_1X24;
|
|
state->colorspace = V4L2_COLORSPACE_SRGB;
|
|
|
|
sd = &state->sd;
|
|
|
|
v4l2_dbg(1, debug, sd, "detecting adv7511 client on address 0x%x\n",
|
|
client->addr << 1);
|
|
|
|
v4l2_i2c_subdev_init(sd, client, &adv7511_ops);
|
|
|
|
hdl = &state->hdl;
|
|
v4l2_ctrl_handler_init(hdl, 10);
|
|
/* add in ascending ID order */
|
|
state->hdmi_mode_ctrl = v4l2_ctrl_new_std_menu(hdl, &adv7511_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, &adv7511_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->hdmi_mode_ctrl->is_private = true;
|
|
state->hotplug_ctrl->is_private = true;
|
|
state->rx_sense_ctrl->is_private = true;
|
|
state->have_edid0_ctrl->is_private = true;
|
|
state->rgb_quantization_range_ctrl->is_private = true;
|
|
|
|
state->pad.flags = MEDIA_PAD_FL_SINK;
|
|
err = media_entity_init(&sd->entity, 1, &state->pad, 0);
|
|
if (err)
|
|
goto err_hdl;
|
|
|
|
/* EDID and CEC i2c addr */
|
|
state->i2c_edid_addr = state->pdata.i2c_edid << 1;
|
|
state->i2c_cec_addr = state->pdata.i2c_cec << 1;
|
|
state->i2c_pktmem_addr = state->pdata.i2c_pktmem << 1;
|
|
|
|
state->chip_revision = adv7511_rd(sd, 0x0);
|
|
chip_id[0] = adv7511_rd(sd, 0xf5);
|
|
chip_id[1] = adv7511_rd(sd, 0xf6);
|
|
if (chip_id[0] != 0x75 || chip_id[1] != 0x11) {
|
|
v4l2_err(sd, "chip_id != 0x7511, read 0x%02x%02x\n", chip_id[0], chip_id[1]);
|
|
err = -EIO;
|
|
goto err_entity;
|
|
}
|
|
|
|
state->i2c_edid = i2c_new_dummy(client->adapter, state->i2c_edid_addr >> 1);
|
|
if (state->i2c_edid == NULL) {
|
|
v4l2_err(sd, "failed to register edid i2c client\n");
|
|
err = -ENOMEM;
|
|
goto err_entity;
|
|
}
|
|
|
|
state->i2c_pktmem = i2c_new_dummy(client->adapter, state->i2c_pktmem_addr >> 1);
|
|
if (state->i2c_pktmem == NULL) {
|
|
v4l2_err(sd, "failed to register pktmem i2c client\n");
|
|
err = -ENOMEM;
|
|
goto err_unreg_edid;
|
|
}
|
|
|
|
adv7511_wr(sd, 0xe2, 0x01); /* power down cec section */
|
|
state->work_queue = create_singlethread_workqueue(sd->name);
|
|
if (state->work_queue == NULL) {
|
|
v4l2_err(sd, "could not create workqueue\n");
|
|
err = -ENOMEM;
|
|
goto err_unreg_pktmem;
|
|
}
|
|
|
|
INIT_DELAYED_WORK(&state->edid_handler, adv7511_edid_handler);
|
|
|
|
adv7511_init_setup(sd);
|
|
adv7511_set_isr(sd, true);
|
|
adv7511_check_monitor_present_status(sd);
|
|
|
|
v4l2_info(sd, "%s found @ 0x%x (%s)\n", client->name,
|
|
client->addr << 1, client->adapter->name);
|
|
return 0;
|
|
|
|
err_unreg_pktmem:
|
|
i2c_unregister_device(state->i2c_pktmem);
|
|
err_unreg_edid:
|
|
i2c_unregister_device(state->i2c_edid);
|
|
err_entity:
|
|
media_entity_cleanup(&sd->entity);
|
|
err_hdl:
|
|
v4l2_ctrl_handler_free(&state->hdl);
|
|
return err;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static int adv7511_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct adv7511_state *state = get_adv7511_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);
|
|
|
|
adv7511_init_setup(sd);
|
|
cancel_delayed_work(&state->edid_handler);
|
|
i2c_unregister_device(state->i2c_edid);
|
|
i2c_unregister_device(state->i2c_pktmem);
|
|
destroy_workqueue(state->work_queue);
|
|
v4l2_device_unregister_subdev(sd);
|
|
media_entity_cleanup(&sd->entity);
|
|
v4l2_ctrl_handler_free(sd->ctrl_handler);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static struct i2c_device_id adv7511_id[] = {
|
|
{ "adv7511", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, adv7511_id);
|
|
|
|
static struct i2c_driver adv7511_driver = {
|
|
.driver = {
|
|
.name = "adv7511",
|
|
},
|
|
.probe = adv7511_probe,
|
|
.remove = adv7511_remove,
|
|
.id_table = adv7511_id,
|
|
};
|
|
|
|
module_i2c_driver(adv7511_driver);
|