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Commit 300a7735 authored by Sean Nyekjaer's avatar Sean Nyekjaer Committed by Alexandre Belloni
Browse files

rtc: ds1307: add ds1308 variant 



The ds1308 variant is very similar to the already supported ds1338
variant, it have more debug registers and a square wave clock output.

Signed-off-by: default avatarSean Nyekjaer <sean.nyekjaer@prevas.dk>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@free-electrons.com>
parent c35c4195

drivers/rtc/rtc-ds1307.c

+12 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ 
 */

enum ds_type {

	ds_1307,

	ds_1308,

	ds_1337,

	ds_1338,

	ds_1339,
@@ -152,6 +153,10 @@ static struct chip_desc chips[last_ds_type] = { 
		.nvram_offset	= 8,

		.nvram_size	= 56,

	},

	[ds_1308] = {

		.nvram_offset	= 8,

		.nvram_size	= 56,

	},

	[ds_1337] = {

		.alarm		= 1,

		.century_reg	= DS1307_REG_MONTH,
@@ -198,6 +203,7 @@ static struct chip_desc chips[last_ds_type] = { 


static const struct i2c_device_id ds1307_id[] = {

	{ "ds1307", ds_1307 },

	{ "ds1308", ds_1308 },

	{ "ds1337", ds_1337 },

	{ "ds1338", ds_1338 },

	{ "ds1339", ds_1339 },
@@ -222,6 +228,10 @@ static const struct of_device_id ds1307_of_match[] = { 
		.compatible = "dallas,ds1307",

		.data = (void *)ds_1307

	},

	{

		.compatible = "dallas,ds1308",

		.data = (void *)ds_1308

	},

	{

		.compatible = "dallas,ds1337",

		.data = (void *)ds_1337
@@ -282,6 +292,7 @@ MODULE_DEVICE_TABLE(of, ds1307_of_match); 
#ifdef CONFIG_ACPI

static const struct acpi_device_id ds1307_acpi_ids[] = {

	{ .id = "DS1307", .driver_data = ds_1307 },

	{ .id = "DS1308", .driver_data = ds_1308 },

	{ .id = "DS1337", .driver_data = ds_1337 },

	{ .id = "DS1338", .driver_data = ds_1338 },

	{ .id = "DS1339", .driver_data = ds_1339 },
@@ -1558,6 +1569,7 @@ static int ds1307_probe(struct i2c_client *client, 
			goto read_rtc;

		}

		break;

	case ds_1308:

	case ds_1338:

		/* clock halted?  turn it on, so clock can tick. */

		if (tmp & DS1307_BIT_CH)