Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754340AbbDHA0i (ORCPT ); Tue, 7 Apr 2015 20:26:38 -0400 Received: from mail-ig0-f177.google.com ([209.85.213.177]:37730 "EHLO mail-ig0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754017AbbDHA01 (ORCPT ); Tue, 7 Apr 2015 20:26:27 -0400 From: Dmitry Torokhov To: linux-input@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Nick Dyer , Yufeng Shen , Benson Leung , Daniel Kurtz , Sjoerd Simons , Javier Martinez Canillas , Olof Johansson Subject: [PATCH 2/2] Input: atmel_mxt_ts - allow specifying device-specific configs Date: Tue, 7 Apr 2015 17:26:10 -0700 Message-Id: <1428452770-20767-2-git-send-email-dmitry.torokhov@gmail.com> X-Mailer: git-send-email 2.2.0.rc0.207.ga3a616c In-Reply-To: <1428452770-20767-1-git-send-email-dmitry.torokhov@gmail.com> References: <1428452770-20767-1-git-send-email-dmitry.torokhov@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4561 Lines: 128 Atmel controolers are very flexible and to function optimally require device-specific configuration to be loaded. While the configuration is stored in NVRAM and is normally persistent, sometimes it gets corrupted and needs to be reloaded. Instead of using the same name, maxtouch.cfg, for all systems and all devices, let's allow platform data to specify the name of configuration file that should be loaded. This is especially useful for systems that use Atmel controllers for both touchscren and touchpad, since their configurations will surely differ. Signed-off-by: Dmitry Torokhov --- .../devicetree/bindings/input/atmel,maxtouch.txt | 6 ++++++ drivers/input/touchscreen/atmel_mxt_ts.c | 18 +++++++++++++----- include/linux/i2c/atmel_mxt_ts.h | 1 + 3 files changed, 20 insertions(+), 5 deletions(-) diff --git a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt index 1852906..fd2344d 100644 --- a/Documentation/devicetree/bindings/input/atmel,maxtouch.txt +++ b/Documentation/devicetree/bindings/input/atmel,maxtouch.txt @@ -9,6 +9,12 @@ Required properties: - interrupts: The sink for the touchpad's IRQ output See ../interrupt-controller/interrupts.txt +Optional properties: + +- linux,config-name: name of configuration file that should be loaded + into device for optimal functioning. If not specified "maxtouch.cfg" + will be used. + Optional properties for main touchpad device: - linux,gpio-keymap: When enabled, the SPT_GPIOPWN_T19 object sends messages diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index dfc7309..0dcd455 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -2035,7 +2035,8 @@ static int mxt_initialize(struct mxt_data *data) if (error) goto err_free_object_table; - error = request_firmware_nowait(THIS_MODULE, true, MXT_CFG_NAME, + error = request_firmware_nowait(THIS_MODULE, true, + data->pdata->cfg_name ?: MXT_CFG_NAME, &client->dev, GFP_KERNEL, data, mxt_config_cb); if (error) { @@ -2375,20 +2376,21 @@ static void mxt_input_close(struct input_dev *dev) #ifdef CONFIG_OF static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) { + struct device_node *np; struct mxt_platform_data *pdata; u32 *keymap; u32 keycode; int proplen, i, ret; - if (!client->dev.of_node) + np = client->dev.of_node; + if (!np) return ERR_PTR(-ENOENT); pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return ERR_PTR(-ENOMEM); - if (of_find_property(client->dev.of_node, "linux,gpio-keymap", - &proplen)) { + if (of_find_property(np, "linux,gpio-keymap", &proplen)) { pdata->t19_num_keys = proplen / sizeof(u32); keymap = devm_kzalloc(&client->dev, @@ -2398,7 +2400,7 @@ static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) return ERR_PTR(-ENOMEM); for (i = 0; i < pdata->t19_num_keys; i++) { - ret = of_property_read_u32_index(client->dev.of_node, + ret = of_property_read_u32_index(np, "linux,gpio-keymap", i, &keycode); if (ret) keycode = KEY_RESERVED; @@ -2409,6 +2411,8 @@ static const struct mxt_platform_data *mxt_parse_dt(struct i2c_client *client) pdata->t19_keymap = keymap; } + of_property_read_string(np, "linux,config-name", &pdata->cfg_name); + return pdata; } #else @@ -2439,11 +2443,15 @@ static struct mxt_acpi_platform_data samus_platform_data[] = { .pdata = { .t19_num_keys = ARRAY_SIZE(samus_touchpad_buttons), .t19_keymap = samus_touchpad_buttons, + .cfg_name = "samus-337t.raw", }, }, { /* Touchscreen */ .hid = "ATML0001", + .pdata = { + .cfg_name = "samus-2954t2.raw", + }, }, { } }; diff --git a/include/linux/i2c/atmel_mxt_ts.h b/include/linux/i2c/atmel_mxt_ts.h index 02bf6ea..aeb8c9a 100644 --- a/include/linux/i2c/atmel_mxt_ts.h +++ b/include/linux/i2c/atmel_mxt_ts.h @@ -20,6 +20,7 @@ struct mxt_platform_data { unsigned long irqflags; u8 t19_num_keys; const unsigned int *t19_keymap; + const char *cfg_name; }; #endif /* __LINUX_ATMEL_MXT_TS_H */ -- 2.2.0.rc0.207.ga3a616c -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/