Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754637AbcK3C5w (ORCPT ); Tue, 29 Nov 2016 21:57:52 -0500 Received: from mail-pf0-f178.google.com ([209.85.192.178]:35739 "EHLO mail-pf0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754475AbcK3C5o (ORCPT ); Tue, 29 Nov 2016 21:57:44 -0500 From: Tin Huynh To: Alessandro Zummo , Alexandre Belloni Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, rtc-linux@googlegroups.com, Loc Ho , Thang Nguyen , Phong Vo , patches@apm.com, Tin Huynh Subject: [PATCH V1] rtc: ds1307: Add ACPI support Date: Wed, 30 Nov 2016 09:57:31 +0700 Message-Id: <1480474651-13984-1-git-send-email-tnhuynh@apm.com> X-Mailer: git-send-email 1.7.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3886 Lines: 115 This patch enables ACPI support for rtc-ds1307 driver. Signed-off-by: Tin Huynh --- 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 #include #include #include @@ -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