On Wed, Nov 30, 2016 at 9:57 AM, Tin Huynh <tnhuynh@xxxxxxx> wrote:
>
> 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
>
Hi ,
Any update for this patch ?
Thank you ,
Tin
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