[PATCH v2 1/3] media: i2c: adv748x: Simplify regmap configuration

[PATCH v2 1/3] media: i2c: adv748x: Simplify regmap configuration

[Kieran Bingham]

From: Kieran Bingham <kieran.bingham@ideasonboard.com>

The ADV748x has identical map configurations for each register map. The
duplication of each map can be simplified using a helper macro such that
each map is represented on a single line.

Define ADV748X_REGMAP_CONF for this purpose use it to create the tables.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

---
v2:
 - Remove unnecessary #undef

 drivers/media/i2c/adv748x/adv748x-core.c | 109 ++++++-------------------------
 1 file changed, 20 insertions(+), 89 deletions(-)

diff --git a/drivers/media/i2c/adv748x/adv748x-core.c b/drivers/media/i2c/adv748x/adv748x-core.c
index fd92c9e4b519..faf73949962b 100644
--- a/drivers/media/i2c/adv748x/adv748x-core.c
+++ b/drivers/media/i2c/adv748x/adv748x-core.c
@@ -35,96 +35,27 @@
  * Register manipulation
  */
 
-static const struct regmap_config adv748x_regmap_cnf[] = {
-	{
-		.name			= "io",
-		.reg_bits		= 8,
-		.val_bits		= 8,
-
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
-	{
-		.name			= "dpll",
-		.reg_bits		= 8,
-		.val_bits		= 8,
-
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
-	{
-		.name			= "cp",
-		.reg_bits		= 8,
-		.val_bits		= 8,
-
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
-	{
-		.name			= "hdmi",
-		.reg_bits		= 8,
-		.val_bits		= 8,
-
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
-	{
-		.name			= "edid",
-		.reg_bits		= 8,
-		.val_bits		= 8,
-
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
-	{
-		.name			= "repeater",
-		.reg_bits		= 8,
-		.val_bits		= 8,
-
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
-	{
-		.name			= "infoframe",
-		.reg_bits		= 8,
-		.val_bits		= 8,
-
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
-	{
-		.name			= "cec",
-		.reg_bits		= 8,
-		.val_bits		= 8,
-
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
-	{
-		.name			= "sdp",
-		.reg_bits		= 8,
-		.val_bits		= 8,
-
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
-
-	{
-		.name			= "txb",
-		.reg_bits		= 8,
-		.val_bits		= 8,
-
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
-	{
-		.name			= "txa",
-		.reg_bits		= 8,
-		.val_bits		= 8,
+#define ADV748X_REGMAP_CONF(n) \
+{ \
+	.name = n, \
+	.reg_bits = 8, \
+	.val_bits = 8, \
+	.max_register = 0xff, \
+	.cache_type = REGCACHE_NONE, \
+}
 
-		.max_register		= 0xff,
-		.cache_type		= REGCACHE_NONE,
-	},
+static const struct regmap_config adv748x_regmap_cnf[] = {
+	ADV748X_REGMAP_CONF("io"),
+	ADV748X_REGMAP_CONF("dpll"),
+	ADV748X_REGMAP_CONF("cp"),
+	ADV748X_REGMAP_CONF("hdmi"),
+	ADV748X_REGMAP_CONF("edid"),
+	ADV748X_REGMAP_CONF("repeater"),
+	ADV748X_REGMAP_CONF("infoframe"),
+	ADV748X_REGMAP_CONF("cec"),
+	ADV748X_REGMAP_CONF("sdp"),
+	ADV748X_REGMAP_CONF("txa"),
+	ADV748X_REGMAP_CONF("txb"),
 };
 
 static int adv748x_configure_regmap(struct adv748x_state *state, int region)
-- 
2.7.4

[PATCH v2 2/3] media: i2c: adv748x: Add missing CBUS page

[Kieran Bingham]

From: Kieran Bingham <kieran.bingham@ideasonboard.com>

The ADV748x has 12 pages mapped onto I2C addresses.

In the existing implementation only 11 are mapped correctly in the page
enumerations, which causes an off-by-one fault on pages above the
infoframe definition due to a missing 'CBUS' page.

This causes the address for the CEC, SDP, TXA, and TXB to be incorrectly
programmed during the iterations in adv748x_initialise_clients().

Until now this has gone un-noticed due to the fact that following the
creation of the clients - the device is reset and the addresses are
reprogrammed in manually by the call to "adv748x_write_regs(state,
adv748x_set_slave_address);"

As part of moving to dynamic i2c address allocations repair this by
providing the missing CBUS page definition.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
v2
 - Remove period from commit title.
 - Collect Niklas' RB tag.


 drivers/media/i2c/adv748x/adv748x-core.c | 3 +++
 drivers/media/i2c/adv748x/adv748x.h      | 2 ++
 2 files changed, 5 insertions(+)

diff --git a/drivers/media/i2c/adv748x/adv748x-core.c b/drivers/media/i2c/adv748x/adv748x-core.c
index faf73949962b..9dcaadaca217 100644
--- a/drivers/media/i2c/adv748x/adv748x-core.c
+++ b/drivers/media/i2c/adv748x/adv748x-core.c
@@ -52,6 +52,7 @@ static const struct regmap_config adv748x_regmap_cnf[] = {
 	ADV748X_REGMAP_CONF("edid"),
 	ADV748X_REGMAP_CONF("repeater"),
 	ADV748X_REGMAP_CONF("infoframe"),
+	ADV748X_REGMAP_CONF("cbus"),
 	ADV748X_REGMAP_CONF("cec"),
 	ADV748X_REGMAP_CONF("sdp"),
 	ADV748X_REGMAP_CONF("txa"),
@@ -89,6 +90,7 @@ static int adv748x_i2c_addresses[ADV748X_PAGE_MAX] = {
 	ADV748X_I2C_EDID,
 	ADV748X_I2C_REPEATER,
 	ADV748X_I2C_INFOFRAME,
+	ADV748X_I2C_CBUS,
 	ADV748X_I2C_CEC,
 	ADV748X_I2C_SDP,
 	ADV748X_I2C_TXB,
@@ -352,6 +354,7 @@ static const struct adv748x_reg_value adv748x_set_slave_address[] = {
 	{ADV748X_PAGE_IO, 0xf6, ADV748X_I2C_EDID << 1},
 	{ADV748X_PAGE_IO, 0xf7, ADV748X_I2C_REPEATER << 1},
 	{ADV748X_PAGE_IO, 0xf8, ADV748X_I2C_INFOFRAME << 1},
+	{ADV748X_PAGE_IO, 0xf9, ADV748X_I2C_CBUS << 1},
 	{ADV748X_PAGE_IO, 0xfa, ADV748X_I2C_CEC << 1},
 	{ADV748X_PAGE_IO, 0xfb, ADV748X_I2C_SDP << 1},
 	{ADV748X_PAGE_IO, 0xfc, ADV748X_I2C_TXB << 1},
diff --git a/drivers/media/i2c/adv748x/adv748x.h b/drivers/media/i2c/adv748x/adv748x.h
index 6789e2f3bc8c..725662edc4b8 100644
--- a/drivers/media/i2c/adv748x/adv748x.h
+++ b/drivers/media/i2c/adv748x/adv748x.h
@@ -35,6 +35,7 @@
 #define ADV748X_I2C_EDID		0x36	/* EDID Map */
 #define ADV748X_I2C_REPEATER		0x32	/* HDMI RX Repeater Map */
 #define ADV748X_I2C_INFOFRAME		0x31	/* HDMI RX InfoFrame Map */
+#define ADV748X_I2C_CBUS		0x30	/* CBUS MHL Map */
 #define ADV748X_I2C_CEC			0x41	/* CEC Map */
 #define ADV748X_I2C_SDP			0x79	/* SDP Map */
 #define ADV748X_I2C_TXB			0x48	/* CSI-TXB Map */
@@ -48,6 +49,7 @@ enum adv748x_page {
 	ADV748X_PAGE_EDID,
 	ADV748X_PAGE_REPEATER,
 	ADV748X_PAGE_INFOFRAME,
+	ADV748X_PAGE_CBUS,
 	ADV748X_PAGE_CEC,
 	ADV748X_PAGE_SDP,
 	ADV748X_PAGE_TXB,
-- 
2.7.4

[PATCH v2 3/3] media: i2c: adv748x: Add support for i2c_new_secondary_device

[Kieran Bingham]

From: Kieran Bingham <kieran.bingham@ideasonboard.com>

The ADV748x has twelve 256-byte maps that can be accessed via the main
I2C ports. Each map has it own I2C address and acts as a standard slave
device on the I2C bus.

Allow a device tree node to override the default addresses so that
address conflicts with other devices on the same bus may be resolved at
the board description level.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
---
 drivers/media/i2c/adv748x/adv748x-core.c | 77 +++++++++++++++-----------------
 drivers/media/i2c/adv748x/adv748x.h      | 14 ------
 2 files changed, 36 insertions(+), 55 deletions(-)

diff --git a/drivers/media/i2c/adv748x/adv748x-core.c b/drivers/media/i2c/adv748x/adv748x-core.c
index 9dcaadaca217..911ccf6eb68c 100644
--- a/drivers/media/i2c/adv748x/adv748x-core.c
+++ b/drivers/media/i2c/adv748x/adv748x-core.c
@@ -80,21 +80,24 @@ static int adv748x_configure_regmap(struct adv748x_state *state, int region)
 
 	return 0;
 }
+struct adv748x_register_map {
+	const char *name;
+	u8 default_addr;
+};
 
-/* Default addresses for the I2C pages */
-static int adv748x_i2c_addresses[ADV748X_PAGE_MAX] = {
-	ADV748X_I2C_IO,
-	ADV748X_I2C_DPLL,
-	ADV748X_I2C_CP,
-	ADV748X_I2C_HDMI,
-	ADV748X_I2C_EDID,
-	ADV748X_I2C_REPEATER,
-	ADV748X_I2C_INFOFRAME,
-	ADV748X_I2C_CBUS,
-	ADV748X_I2C_CEC,
-	ADV748X_I2C_SDP,
-	ADV748X_I2C_TXB,
-	ADV748X_I2C_TXA,
+static const struct adv748x_register_map adv748x_default_addresses[] = {
+	[ADV748X_PAGE_IO] = { "main", 0x70 },
+	[ADV748X_PAGE_DPLL] = { "dpll", 0x26 },
+	[ADV748X_PAGE_CP] = { "cp", 0x22 },
+	[ADV748X_PAGE_HDMI] = { "hdmi", 0x34 },
+	[ADV748X_PAGE_EDID] = { "edid", 0x36 },
+	[ADV748X_PAGE_REPEATER] = { "repeater", 0x32 },
+	[ADV748X_PAGE_INFOFRAME] = { "infoframe", 0x31 },
+	[ADV748X_PAGE_CBUS] = { "cbus", 0x30 },
+	[ADV748X_PAGE_CEC] = { "cec", 0x41 },
+	[ADV748X_PAGE_SDP] = { "sdp", 0x79 },
+	[ADV748X_PAGE_TXB] = { "txb", 0x48 },
+	[ADV748X_PAGE_TXA] = { "txa", 0x4a },
 };
 
 static int adv748x_read_check(struct adv748x_state *state,
@@ -143,15 +146,20 @@ int adv748x_write_block(struct adv748x_state *state, int client_page,
 	return regmap_raw_write(regmap, init_reg, val, val_len);
 }
 
-static struct i2c_client *adv748x_dummy_client(struct adv748x_state *state,
-					       u8 addr, u8 io_reg)
+static int adv748x_set_slave_addresses(struct adv748x_state *state)
 {
-	struct i2c_client *client = state->client;
+	struct i2c_client *client;
+	unsigned int i;
+	u8 io_reg;
+
+	for (i = ADV748X_PAGE_DPLL; i < ADV748X_PAGE_MAX; ++i) {
+		io_reg = ADV748X_IO_SLAVE_ADDR_BASE + i;
+		client = state->i2c_clients[i];
 
-	if (addr)
-		io_write(state, io_reg, addr << 1);
+		io_write(state, io_reg, client->addr << 1);
+	}
 
-	return i2c_new_dummy(client->adapter, io_read(state, io_reg) >> 1);
+	return 0;
 }
 
 static void adv748x_unregister_clients(struct adv748x_state *state)
@@ -164,13 +172,15 @@ static void adv748x_unregister_clients(struct adv748x_state *state)
 
 static int adv748x_initialise_clients(struct adv748x_state *state)
 {
-	int i;
+	unsigned int i;
 	int ret;
 
 	for (i = ADV748X_PAGE_DPLL; i < ADV748X_PAGE_MAX; ++i) {
-		state->i2c_clients[i] =
-			adv748x_dummy_client(state, adv748x_i2c_addresses[i],
-					     ADV748X_IO_SLAVE_ADDR_BASE + i);
+		state->i2c_clients[i] = i2c_new_secondary_device(
+				state->client,
+				adv748x_default_addresses[i].name,
+				adv748x_default_addresses[i].default_addr);
+
 		if (state->i2c_clients[i] == NULL) {
 			adv_err(state, "failed to create i2c client %u\n", i);
 			return -ENOMEM;
@@ -181,7 +191,7 @@ static int adv748x_initialise_clients(struct adv748x_state *state)
 			return ret;
 	}
 
-	return 0;
+	return adv748x_set_slave_addresses(state);
 }
 
 /**
@@ -347,21 +357,6 @@ static const struct adv748x_reg_value adv748x_sw_reset[] = {
 	{ADV748X_PAGE_EOR, 0xff, 0xff}	/* End of register table */
 };
 
-static const struct adv748x_reg_value adv748x_set_slave_address[] = {
-	{ADV748X_PAGE_IO, 0xf3, ADV748X_I2C_DPLL << 1},
-	{ADV748X_PAGE_IO, 0xf4, ADV748X_I2C_CP << 1},
-	{ADV748X_PAGE_IO, 0xf5, ADV748X_I2C_HDMI << 1},
-	{ADV748X_PAGE_IO, 0xf6, ADV748X_I2C_EDID << 1},
-	{ADV748X_PAGE_IO, 0xf7, ADV748X_I2C_REPEATER << 1},
-	{ADV748X_PAGE_IO, 0xf8, ADV748X_I2C_INFOFRAME << 1},
-	{ADV748X_PAGE_IO, 0xf9, ADV748X_I2C_CBUS << 1},
-	{ADV748X_PAGE_IO, 0xfa, ADV748X_I2C_CEC << 1},
-	{ADV748X_PAGE_IO, 0xfb, ADV748X_I2C_SDP << 1},
-	{ADV748X_PAGE_IO, 0xfc, ADV748X_I2C_TXB << 1},
-	{ADV748X_PAGE_IO, 0xfd, ADV748X_I2C_TXA << 1},
-	{ADV748X_PAGE_EOR, 0xff, 0xff}	/* End of register table */
-};
-
 /* Supported Formats For Script Below */
 /* - 01-29 HDMI to MIPI TxA CSI 4-Lane - RGB888: */
 static const struct adv748x_reg_value adv748x_init_txa_4lane[] = {
@@ -492,7 +487,7 @@ static int adv748x_reset(struct adv748x_state *state)
 	if (ret < 0)
 		return ret;
 
-	ret = adv748x_write_regs(state, adv748x_set_slave_address);
+	ret = adv748x_set_slave_addresses(state);
 	if (ret < 0)
 		return ret;
 
diff --git a/drivers/media/i2c/adv748x/adv748x.h b/drivers/media/i2c/adv748x/adv748x.h
index 725662edc4b8..65f83741277e 100644
--- a/drivers/media/i2c/adv748x/adv748x.h
+++ b/drivers/media/i2c/adv748x/adv748x.h
@@ -27,20 +27,6 @@
 #ifndef _ADV748X_H_
 #define _ADV748X_H_
 
-/* I2C slave addresses */
-#define ADV748X_I2C_IO			0x70	/* IO Map */
-#define ADV748X_I2C_DPLL		0x26	/* DPLL Map */
-#define ADV748X_I2C_CP			0x22	/* CP Map */
-#define ADV748X_I2C_HDMI		0x34	/* HDMI Map */
-#define ADV748X_I2C_EDID		0x36	/* EDID Map */
-#define ADV748X_I2C_REPEATER		0x32	/* HDMI RX Repeater Map */
-#define ADV748X_I2C_INFOFRAME		0x31	/* HDMI RX InfoFrame Map */
-#define ADV748X_I2C_CBUS		0x30	/* CBUS MHL Map */
-#define ADV748X_I2C_CEC			0x41	/* CEC Map */
-#define ADV748X_I2C_SDP			0x79	/* SDP Map */
-#define ADV748X_I2C_TXB			0x48	/* CSI-TXB Map */
-#define ADV748X_I2C_TXA			0x4a	/* CSI-TXA Map */
-
 enum adv748x_page {
 	ADV748X_PAGE_IO,
 	ADV748X_PAGE_DPLL,
-- 
2.7.4

Re: [PATCH v2 1/3] media: i2c: adv748x: Simplify regmap configuration

[Niklas Söderlund]

Hi Kieran,

Thanks for your patch,

On 2018-02-27 15:05:48 +0000, Kieran Bingham wrote:
> From: Kieran Bingham <kieran.bingham@ideasonboard.com>
> 
> The ADV748x has identical map configurations for each register map. The
> duplication of each map can be simplified using a helper macro such that
> each map is represented on a single line.
> 
> Define ADV748X_REGMAP_CONF for this purpose use it to create the tables.
> 
> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>

> 
> ---
> v2:
>  - Remove unnecessary #undef
> 
>  drivers/media/i2c/adv748x/adv748x-core.c | 109 ++++++-------------------------
>  1 file changed, 20 insertions(+), 89 deletions(-)
> 
> diff --git a/drivers/media/i2c/adv748x/adv748x-core.c b/drivers/media/i2c/adv748x/adv748x-core.c
> index fd92c9e4b519..faf73949962b 100644
> --- a/drivers/media/i2c/adv748x/adv748x-core.c
> +++ b/drivers/media/i2c/adv748x/adv748x-core.c
> @@ -35,96 +35,27 @@
>   * Register manipulation
>   */
>  
> -static const struct regmap_config adv748x_regmap_cnf[] = {
> -	{
> -		.name			= "io",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> -
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> -	{
> -		.name			= "dpll",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> -
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> -	{
> -		.name			= "cp",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> -
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> -	{
> -		.name			= "hdmi",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> -
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> -	{
> -		.name			= "edid",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> -
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> -	{
> -		.name			= "repeater",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> -
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> -	{
> -		.name			= "infoframe",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> -
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> -	{
> -		.name			= "cec",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> -
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> -	{
> -		.name			= "sdp",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> -
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> -
> -	{
> -		.name			= "txb",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> -
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> -	{
> -		.name			= "txa",
> -		.reg_bits		= 8,
> -		.val_bits		= 8,
> +#define ADV748X_REGMAP_CONF(n) \
> +{ \
> +	.name = n, \
> +	.reg_bits = 8, \
> +	.val_bits = 8, \
> +	.max_register = 0xff, \
> +	.cache_type = REGCACHE_NONE, \
> +}
>  
> -		.max_register		= 0xff,
> -		.cache_type		= REGCACHE_NONE,
> -	},
> +static const struct regmap_config adv748x_regmap_cnf[] = {
> +	ADV748X_REGMAP_CONF("io"),
> +	ADV748X_REGMAP_CONF("dpll"),
> +	ADV748X_REGMAP_CONF("cp"),
> +	ADV748X_REGMAP_CONF("hdmi"),
> +	ADV748X_REGMAP_CONF("edid"),
> +	ADV748X_REGMAP_CONF("repeater"),
> +	ADV748X_REGMAP_CONF("infoframe"),
> +	ADV748X_REGMAP_CONF("cec"),
> +	ADV748X_REGMAP_CONF("sdp"),
> +	ADV748X_REGMAP_CONF("txa"),
> +	ADV748X_REGMAP_CONF("txb"),
>  };
>  
>  static int adv748x_configure_regmap(struct adv748x_state *state, int region)
> -- 
> 2.7.4
> 

-- 
Regards,
Niklas Söderlund

Re: [PATCH v2 3/3] media: i2c: adv748x: Add support for i2c_new_secondary_device

[Niklas Söderlund]

Hi Kieran,

I like this change :-)

On 2018-02-27 15:05:50 +0000, Kieran Bingham wrote:
> From: Kieran Bingham <kieran.bingham@ideasonboard.com>
> 
> The ADV748x has twelve 256-byte maps that can be accessed via the main
> I2C ports. Each map has it own I2C address and acts as a standard slave
> device on the I2C bus.
> 
> Allow a device tree node to override the default addresses so that
> address conflicts with other devices on the same bus may be resolved at
> the board description level.
> 
> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>

> ---
>  drivers/media/i2c/adv748x/adv748x-core.c | 77 +++++++++++++++-----------------
>  drivers/media/i2c/adv748x/adv748x.h      | 14 ------
>  2 files changed, 36 insertions(+), 55 deletions(-)
> 
> diff --git a/drivers/media/i2c/adv748x/adv748x-core.c b/drivers/media/i2c/adv748x/adv748x-core.c
> index 9dcaadaca217..911ccf6eb68c 100644
> --- a/drivers/media/i2c/adv748x/adv748x-core.c
> +++ b/drivers/media/i2c/adv748x/adv748x-core.c
> @@ -80,21 +80,24 @@ static int adv748x_configure_regmap(struct adv748x_state *state, int region)
>  
>  	return 0;
>  }
> +struct adv748x_register_map {
> +	const char *name;
> +	u8 default_addr;
> +};
>  
> -/* Default addresses for the I2C pages */
> -static int adv748x_i2c_addresses[ADV748X_PAGE_MAX] = {
> -	ADV748X_I2C_IO,
> -	ADV748X_I2C_DPLL,
> -	ADV748X_I2C_CP,
> -	ADV748X_I2C_HDMI,
> -	ADV748X_I2C_EDID,
> -	ADV748X_I2C_REPEATER,
> -	ADV748X_I2C_INFOFRAME,
> -	ADV748X_I2C_CBUS,
> -	ADV748X_I2C_CEC,
> -	ADV748X_I2C_SDP,
> -	ADV748X_I2C_TXB,
> -	ADV748X_I2C_TXA,
> +static const struct adv748x_register_map adv748x_default_addresses[] = {
> +	[ADV748X_PAGE_IO] = { "main", 0x70 },
> +	[ADV748X_PAGE_DPLL] = { "dpll", 0x26 },
> +	[ADV748X_PAGE_CP] = { "cp", 0x22 },
> +	[ADV748X_PAGE_HDMI] = { "hdmi", 0x34 },
> +	[ADV748X_PAGE_EDID] = { "edid", 0x36 },
> +	[ADV748X_PAGE_REPEATER] = { "repeater", 0x32 },
> +	[ADV748X_PAGE_INFOFRAME] = { "infoframe", 0x31 },
> +	[ADV748X_PAGE_CBUS] = { "cbus", 0x30 },
> +	[ADV748X_PAGE_CEC] = { "cec", 0x41 },
> +	[ADV748X_PAGE_SDP] = { "sdp", 0x79 },
> +	[ADV748X_PAGE_TXB] = { "txb", 0x48 },
> +	[ADV748X_PAGE_TXA] = { "txa", 0x4a },
>  };
>  
>  static int adv748x_read_check(struct adv748x_state *state,
> @@ -143,15 +146,20 @@ int adv748x_write_block(struct adv748x_state *state, int client_page,
>  	return regmap_raw_write(regmap, init_reg, val, val_len);
>  }
>  
> -static struct i2c_client *adv748x_dummy_client(struct adv748x_state *state,
> -					       u8 addr, u8 io_reg)
> +static int adv748x_set_slave_addresses(struct adv748x_state *state)
>  {
> -	struct i2c_client *client = state->client;
> +	struct i2c_client *client;
> +	unsigned int i;
> +	u8 io_reg;
> +
> +	for (i = ADV748X_PAGE_DPLL; i < ADV748X_PAGE_MAX; ++i) {
> +		io_reg = ADV748X_IO_SLAVE_ADDR_BASE + i;
> +		client = state->i2c_clients[i];
>  
> -	if (addr)
> -		io_write(state, io_reg, addr << 1);
> +		io_write(state, io_reg, client->addr << 1);
> +	}
>  
> -	return i2c_new_dummy(client->adapter, io_read(state, io_reg) >> 1);
> +	return 0;
>  }
>  
>  static void adv748x_unregister_clients(struct adv748x_state *state)
> @@ -164,13 +172,15 @@ static void adv748x_unregister_clients(struct adv748x_state *state)
>  
>  static int adv748x_initialise_clients(struct adv748x_state *state)
>  {
> -	int i;
> +	unsigned int i;
>  	int ret;
>  
>  	for (i = ADV748X_PAGE_DPLL; i < ADV748X_PAGE_MAX; ++i) {
> -		state->i2c_clients[i] =
> -			adv748x_dummy_client(state, adv748x_i2c_addresses[i],
> -					     ADV748X_IO_SLAVE_ADDR_BASE + i);
> +		state->i2c_clients[i] = i2c_new_secondary_device(
> +				state->client,
> +				adv748x_default_addresses[i].name,
> +				adv748x_default_addresses[i].default_addr);
> +
>  		if (state->i2c_clients[i] == NULL) {
>  			adv_err(state, "failed to create i2c client %u\n", i);
>  			return -ENOMEM;
> @@ -181,7 +191,7 @@ static int adv748x_initialise_clients(struct adv748x_state *state)
>  			return ret;
>  	}
>  
> -	return 0;
> +	return adv748x_set_slave_addresses(state);
>  }
>  
>  /**
> @@ -347,21 +357,6 @@ static const struct adv748x_reg_value adv748x_sw_reset[] = {
>  	{ADV748X_PAGE_EOR, 0xff, 0xff}	/* End of register table */
>  };
>  
> -static const struct adv748x_reg_value adv748x_set_slave_address[] = {
> -	{ADV748X_PAGE_IO, 0xf3, ADV748X_I2C_DPLL << 1},
> -	{ADV748X_PAGE_IO, 0xf4, ADV748X_I2C_CP << 1},
> -	{ADV748X_PAGE_IO, 0xf5, ADV748X_I2C_HDMI << 1},
> -	{ADV748X_PAGE_IO, 0xf6, ADV748X_I2C_EDID << 1},
> -	{ADV748X_PAGE_IO, 0xf7, ADV748X_I2C_REPEATER << 1},
> -	{ADV748X_PAGE_IO, 0xf8, ADV748X_I2C_INFOFRAME << 1},
> -	{ADV748X_PAGE_IO, 0xf9, ADV748X_I2C_CBUS << 1},
> -	{ADV748X_PAGE_IO, 0xfa, ADV748X_I2C_CEC << 1},
> -	{ADV748X_PAGE_IO, 0xfb, ADV748X_I2C_SDP << 1},
> -	{ADV748X_PAGE_IO, 0xfc, ADV748X_I2C_TXB << 1},
> -	{ADV748X_PAGE_IO, 0xfd, ADV748X_I2C_TXA << 1},
> -	{ADV748X_PAGE_EOR, 0xff, 0xff}	/* End of register table */
> -};
> -
>  /* Supported Formats For Script Below */
>  /* - 01-29 HDMI to MIPI TxA CSI 4-Lane - RGB888: */
>  static const struct adv748x_reg_value adv748x_init_txa_4lane[] = {
> @@ -492,7 +487,7 @@ static int adv748x_reset(struct adv748x_state *state)
>  	if (ret < 0)
>  		return ret;
>  
> -	ret = adv748x_write_regs(state, adv748x_set_slave_address);
> +	ret = adv748x_set_slave_addresses(state);
>  	if (ret < 0)
>  		return ret;
>  
> diff --git a/drivers/media/i2c/adv748x/adv748x.h b/drivers/media/i2c/adv748x/adv748x.h
> index 725662edc4b8..65f83741277e 100644
> --- a/drivers/media/i2c/adv748x/adv748x.h
> +++ b/drivers/media/i2c/adv748x/adv748x.h
> @@ -27,20 +27,6 @@
>  #ifndef _ADV748X_H_
>  #define _ADV748X_H_
>  
> -/* I2C slave addresses */
> -#define ADV748X_I2C_IO			0x70	/* IO Map */
> -#define ADV748X_I2C_DPLL		0x26	/* DPLL Map */
> -#define ADV748X_I2C_CP			0x22	/* CP Map */
> -#define ADV748X_I2C_HDMI		0x34	/* HDMI Map */
> -#define ADV748X_I2C_EDID		0x36	/* EDID Map */
> -#define ADV748X_I2C_REPEATER		0x32	/* HDMI RX Repeater Map */
> -#define ADV748X_I2C_INFOFRAME		0x31	/* HDMI RX InfoFrame Map */
> -#define ADV748X_I2C_CBUS		0x30	/* CBUS MHL Map */
> -#define ADV748X_I2C_CEC			0x41	/* CEC Map */
> -#define ADV748X_I2C_SDP			0x79	/* SDP Map */
> -#define ADV748X_I2C_TXB			0x48	/* CSI-TXB Map */
> -#define ADV748X_I2C_TXA			0x4a	/* CSI-TXA Map */
> -
>  enum adv748x_page {
>  	ADV748X_PAGE_IO,
>  	ADV748X_PAGE_DPLL,
> -- 
> 2.7.4
> 

-- 
Regards,
Niklas Söderlund