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Commit b4dbad8f authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
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[media] adv7511: log the currently set infoframes 



The adv7511 sets up InfoFrames that are used when transmitting video.
Log the contents of those InfoFrames so it is possible to see exactly what
the transmitter is sending.

Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 28a769f1

drivers/media/i2c/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -424,6 +424,7 @@ config VIDEO_ADV7393 
config VIDEO_ADV7511

	tristate "Analog Devices ADV7511 encoder"

	depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API

	select HDMI

	---help---

	  Support for the Analog Devices ADV7511 video encoder.

drivers/media/i2c/adv7511.c

+121 −2
Original line number Diff line number Diff line
@@ -91,6 +91,7 @@ struct adv7511_state { 
	int chip_revision;

	u8 i2c_edid_addr;

	u8 i2c_cec_addr;

	u8 i2c_pktmem_addr;

	/* Is the adv7511 powered on? */

	bool power_on;

	/* Did we receive hotplug and rx-sense signals? */
@@ -109,6 +110,7 @@ struct adv7511_state { 
	struct v4l2_ctrl *have_edid0_ctrl;

	struct v4l2_ctrl *rgb_quantization_range_ctrl;

	struct i2c_client *i2c_edid;

	struct i2c_client *i2c_pktmem;

	struct adv7511_state_edid edid;

	/* Running counter of the number of detected EDIDs (for debugging) */

	unsigned edid_detect_counter;
@@ -238,6 +240,35 @@ static inline void adv7511_edid_rd(struct v4l2_subdev *sd, u16 len, u8 *buf) 
		v4l2_err(sd, "%s: i2c read error\n", __func__);

}



static int adv7511_pktmem_rd(struct v4l2_subdev *sd, u8 reg)

{

	struct adv7511_state *state = get_adv7511_state(sd);



	return adv_smbus_read_byte_data(state->i2c_pktmem, reg);

}



static int adv7511_pktmem_wr(struct v4l2_subdev *sd, u8 reg, u8 val)

{

	struct adv7511_state *state = get_adv7511_state(sd);

	int ret;

	int i;



	for (i = 0; i < 3; i++) {

		ret = i2c_smbus_write_byte_data(state->i2c_pktmem, reg, val);

		if (ret == 0)

			return 0;

	}

	v4l2_err(sd, "%s: i2c write error\n", __func__);

	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 adv7511_pktmem_wr_and_or(struct v4l2_subdev *sd, u8 reg, u8 clr_mask, u8 val_mask)

{

	adv7511_pktmem_wr(sd, reg, (adv7511_pktmem_rd(sd, reg) & clr_mask) | val_mask);

}



static inline bool adv7511_have_hotplug(struct v4l2_subdev *sd)

{

	return adv7511_rd(sd, 0x42) & MASK_ADV7511_HPD_DETECT;
@@ -415,6 +446,80 @@ static int adv7511_s_register(struct v4l2_subdev *sd, const struct v4l2_dbg_regi 
}

#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);
@@ -480,6 +585,7 @@ static int adv7511_log_status(struct v4l2_subdev *sd) 
			  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: ",
@@ -488,6 +594,7 @@ static int adv7511_log_status(struct v4l2_subdev *sd) 
		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;

}
@@ -537,6 +644,7 @@ static int adv7511_s_power(struct v4l2_subdev *sd, int on) 
	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);
@@ -1381,6 +1489,7 @@ static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id * 
	/* 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);
@@ -1398,12 +1507,19 @@ static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id * 
		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_cec;

		goto err_unreg_pktmem;

	}



	INIT_DELAYED_WORK(&state->edid_handler, adv7511_edid_handler);
@@ -1416,7 +1532,9 @@ static int adv7511_probe(struct i2c_client *client, const struct i2c_device_id * 
			  client->addr << 1, client->adapter->name);

	return 0;



err_unreg_cec:

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);
@@ -1440,6 +1558,7 @@ static int adv7511_remove(struct i2c_client *client) 
	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);

drivers/media/pci/cobalt/cobalt-driver.c

+1 −0
Original line number Diff line number Diff line
@@ -602,6 +602,7 @@ static int cobalt_subdevs_hsma_init(struct cobalt *cobalt) 
	static struct adv7511_platform_data adv7511_pdata = {

		.i2c_edid = 0x7e >> 1,

		.i2c_cec = 0x7c >> 1,

		.i2c_pktmem = 0x70 >> 1,

		.cec_clk = 12000000,

	};

	static struct i2c_board_info adv7511_info = {

include/media/adv7511.h

+1 −0
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ struct adv7511_cec_arg { 
struct adv7511_platform_data {

	u8 i2c_edid;

	u8 i2c_cec;

	u8 i2c_pktmem;

	u32 cec_clk;

};