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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by DM6NAM11FT018.mail.protection.outlook.com (10.13.172.110) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.5676.17 via Frontend Transport; Fri, 30 Sep 2022 10:23:12 +0000 Received: from SATLEXMB04.amd.com (10.181.40.145) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.28; Fri, 30 Sep 2022 05:23:11 -0500 Received: from xhdshubhraj40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.28 via Frontend Transport; Fri, 30 Sep 2022 05:23:09 -0500 From: Shubhrajyoti Datta To: CC: , , , , , Subject: [PATCH v5 3/3] gpio: pca9570: add slg7xl45106 support Date: Fri, 30 Sep 2022 15:52:59 +0530 Message-ID: <20220930102259.21918-4-shubhrajyoti.datta@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220930102259.21918-1-shubhrajyoti.datta@amd.com> References: <20220930102259.21918-1-shubhrajyoti.datta@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM6NAM11FT018:EE_|MN0PR12MB5956:EE_ X-MS-Office365-Filtering-Correlation-Id: 301a5f15-9198-4ec7-6009-08daa2cdc77b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Sep 2022 10:23:12.3999 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 301a5f15-9198-4ec7-6009-08daa2cdc77b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT018.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN0PR12MB5956 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org Dialog semiconductors SLG7XL45106 is an 8-bit I2C GPO expander. The output port is controlled by a data byte with register address. Add a compatible string for the same. Also update the driver to write and read from it. Signed-off-by: Shubhrajyoti Datta --- (no changes since v3) Changes in v3: split the new patch Suggested by Andy Shevchenko drivers/gpio/gpio-pca9570.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/gpio/gpio-pca9570.c b/drivers/gpio/gpio-pca9570.c index d49e088e6b43..6c07a8811a7a 100644 --- a/drivers/gpio/gpio-pca9570.c +++ b/drivers/gpio/gpio-pca9570.c @@ -15,6 +15,8 @@ #include #include +#define SLG7XL45106_GPO_REG 0xDB + /** * struct pca9570_platform_data - GPIO platformdata * @ngpio: no of gpios @@ -28,11 +30,13 @@ struct pca9570_platform_data { /** * struct pca9570 - GPIO driver data * @chip: GPIO controller chip + * @p_data: GPIO controller platform data * @lock: Protects write sequences * @out: Buffer for device register */ struct pca9570 { struct gpio_chip chip; + const struct pca9570_platform_data *p_data; struct mutex lock; u8 out; }; @@ -42,7 +46,11 @@ static int pca9570_read(struct pca9570 *gpio, u8 *value) struct i2c_client *client = to_i2c_client(gpio->chip.parent); int ret; - ret = i2c_smbus_read_byte(client); + if (gpio->p_data->command != 0) + ret = i2c_smbus_read_byte_data(client, gpio->p_data->command); + else + ret = i2c_smbus_read_byte(client); + if (ret < 0) return ret; @@ -54,6 +62,9 @@ static int pca9570_write(struct pca9570 *gpio, u8 value) { struct i2c_client *client = to_i2c_client(gpio->chip.parent); + if (gpio->p_data->command != 0) + return i2c_smbus_write_byte_data(client, gpio->p_data->command, value); + return i2c_smbus_write_byte(client, value); } @@ -116,7 +127,8 @@ static int pca9570_probe(struct i2c_client *client) gpio->chip.get = pca9570_get; gpio->chip.set = pca9570_set; gpio->chip.base = -1; - gpio->chip.ngpio = (uintptr_t)device_get_match_data(&client->dev); + gpio->p_data = device_get_match_data(&client->dev); + gpio->chip.ngpio = gpio->p_data->ngpio; gpio->chip.can_sleep = true; mutex_init(&gpio->lock); @@ -137,14 +149,21 @@ static const struct pca9570_platform_data pca9571_gpio = { .ngpio = 8, }; +static const struct pca9570_platform_data slg7xl45106_gpio = { + .ngpio = 8, + .command = SLG7XL45106_GPO_REG, +}; + static const struct i2c_device_id pca9570_id_table[] = { { "pca9570", (kernel_ulong_t)&pca9570_gpio}, { "pca9571", (kernel_ulong_t)&pca9571_gpio }, + { "slg7xl45106", (kernel_ulong_t)&slg7xl45106_gpio }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, pca9570_id_table); static const struct of_device_id pca9570_of_match_table[] = { + { .compatible = "dlg,slg7xl45106", .data = &slg7xl45106_gpio}, { .compatible = "nxp,pca9570", .data = &pca9570_gpio }, { .compatible = "nxp,pca9571", .data = &pca9571_gpio }, { /* sentinel */ } -- 2.17.1