This patch enables ACPI support for rtc-ds1307 driver.
Signed-off-by: Tin Huynh <tnhuynh@xxxxxxx>
---
drivers/rtc/rtc-ds1307.c | 51 ++++++++++++++++++++++++++++++++++++++-------
1 files changed, 43 insertions(+), 8 deletions(-)
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index 4e31036..2a1a4d3 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -11,6 +11,7 @@
* published by the Free Software Foundation.
*/
+#include <linux/acpi.h>
#include <linux/bcd.h>
#include <linux/i2c.h>
#include <linux/init.h>
@@ -191,6 +192,26 @@ static u8 do_trickle_setup_ds1339(struct i2c_client *,
};
MODULE_DEVICE_TABLE(i2c, ds1307_id);
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id ds1307_acpi_ids[] = {
+ { .id = "DS1307", .driver_data = ds_1307 },
+ { .id = "DS1337", .driver_data = ds_1337 },
+ { .id = "DS1338", .driver_data = ds_1338 },
+ { .id = "DS1339", .driver_data = ds_1339 },
+ { .id = "DS1388", .driver_data = ds_1388 },
+ { .id = "DS1340", .driver_data = ds_1340 },
+ { .id = "DS3231", .driver_data = ds_3231 },
+ { .id = "M41T00", .driver_data = m41t00 },
+ { .id = "MCP7940X", .driver_data = mcp794xx },
+ { .id = "MCP7941X", .driver_data = mcp794xx },
+ { .id = "PT7C4338", .driver_data = ds_1307 },
+ { .id = "RX8025", .driver_data = rx_8025 },
+ { .id = "ISL12057", .driver_data = ds_1337 },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, ds1307_acpi_ids);
+#endif
+
/*----------------------------------------------------------------------*/
#define BLOCK_DATA_MAX_TRIES 10
@@ -874,7 +895,7 @@ static u8 do_trickle_setup_ds1339(struct i2c_client *client,
return setup;
}
-static void ds1307_trickle_of_init(struct i2c_client *client,
+static void ds1307_trickle_init(struct i2c_client *client,
struct chip_desc *chip)
{
uint32_t ohms = 0;
@@ -882,9 +903,10 @@ static void ds1307_trickle_of_init(struct i2c_client *client,
if (!chip->do_trickle_setup)
goto out;
- if (of_property_read_u32(client->dev.of_node, "trickle-resistor-ohms" , &ohms))
+ if (device_property_read_u32(&client->dev, "trickle-resistor-ohms",
+ &ohms))
goto out;
- if (of_property_read_bool(client->dev.of_node, "trickle-diode-disable"))
+ if (device_property_read_bool(&client->dev, "trickle-diode-disable"))
diode = false;
chip->trickle_charger_setup = chip->do_trickle_setup(client,
ohms, diode);
@@ -1268,7 +1290,7 @@ static int ds1307_probe(struct i2c_client *client,
struct ds1307 *ds1307;
int err = -ENODEV;
int tmp, wday;
- struct chip_desc *chip = &chips[id->driver_data];
+ struct chip_desc *chip;
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
bool want_irq = false;
bool ds1307_can_wakeup_device = false;
@@ -1297,11 +1319,23 @@ static int ds1307_probe(struct i2c_client *client,
i2c_set_clientdata(client, ds1307);
ds1307->client = client;
- ds1307->type = id->driver_data;
+ if (id) {
+ chip = &chips[id->driver_data];
+ ds1307->type = id->driver_data;
+ } else {
+ const struct acpi_device_id *acpi_id;
+
+ acpi_id = acpi_match_device(ACPI_PTR(ds1307_acpi_ids),
+ &client->dev);
+ if (!acpi_id)
+ return -ENODEV;
+ chip = &chips[acpi_id->driver_data];
+ ds1307->type = acpi_id->driver_data;
+ }
- if (!pdata && client->dev.of_node)
- ds1307_trickle_of_init(client, chip);
- else if (pdata && pdata->trickle_charger_setup)
+ if (!pdata)
+ ds1307_trickle_init(client, chip);
+ else if (pdata->trickle_charger_setup)
chip->trickle_charger_setup = pdata->trickle_charger_setup;
if (chip->trickle_charger_setup && chip->trickle_charger_reg) {
@@ -1678,6 +1712,7 @@ static int ds1307_remove(struct i2c_client *client)
static struct i2c_driver ds1307_driver = {
.driver = {
.name = "rtc-ds1307",
+ .acpi_match_table = ACPI_PTR(ds1307_acpi_ids),
},
.probe = ds1307_probe,
.remove = ds1307_remove,
--
1.7.1
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