From patchwork Fri May 5 11:16:55 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 679895 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4A8FAC7EE2D for ; Fri, 5 May 2023 11:17:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231935AbjEELRM (ORCPT ); Fri, 5 May 2023 07:17:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57302 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231907AbjEELRI (ORCPT ); Fri, 5 May 2023 07:17:08 -0400 Received: from mail-lf1-x12c.google.com (mail-lf1-x12c.google.com [IPv6:2a00:1450:4864:20::12c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E95811B6F for ; Fri, 5 May 2023 04:17:03 -0700 (PDT) Received: by mail-lf1-x12c.google.com with SMTP id 2adb3069b0e04-4ecb137af7eso1869006e87.2 for ; Fri, 05 May 2023 04:17:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1683285421; x=1685877421; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=oGxJv9sSczR/WlOVhbHlNGY8Ge9cALs5LQq+jaUXqTk=; b=GXmyEwI3+et8LnTBJwaiwPhiAvzLcFyJ2EPS5b+rrnQsS70unATwx0XHQ0a3DO9GWZ 4IGmU7bLkRyfjrbDozozKPHld2EKM3eMu5UjyXOjwcBTeGpOAVK5oaKLkjltsZ7/5aEE zMPchlfcUu924CVPfJn1PkueDLhXJbdaWd5ZnKc/OvvDsKZ36BXFfvrEaf0KTusExOaN f4tL1Sl3a+/MP+q3fHKCCKvy2yPfYFSjSF+qTlsKUE0NaeMy7Jd4DyAjWpf6Hl6nwCs6 8K4ox1DcbTJerCKRqk+3czds6SMPw2RKk5/TI0kkgOq/1TAmom92Tq5sQs2Kyx7MKMRh /dzA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1683285421; x=1685877421; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=oGxJv9sSczR/WlOVhbHlNGY8Ge9cALs5LQq+jaUXqTk=; b=KGFyY496/zuaEZziilV/ptNkOJRTaslNk/15nvfA9Er0Wqo4qX+Ho5nbH20glhtNP8 MRpGSnqkl8lJnlM1p5c2wW8tyFpQujc0E5VApRYG/1tksKj/U1sgFqV8Ebbqg07ssP3I DEF8rQCGCSj/yC8j1G7+Z6M3K68a9DOZI0W9m6li+xOvcTGO/ly34Mbpk3BWolzw2Bx5 404jxWKOEvfr7kn1esmzRYhdrXWe/NazSkUe/G1B1zpuqUqCe0422HnisyN/bVn7/j43 E12L0GVqGR9Fm//CzhEQjfudn59gH9uQO52quIUZvTtMAEG5wMIhhhyeRHw0O0Pwv7nx TH1g== X-Gm-Message-State: AC+VfDzZpYFILVEPGsfb2UN1eH6InsdfsFdfxh6458YFYSeCdBA5h0Hj s+Z5716bJURna48OLQTIytOYWQ== X-Google-Smtp-Source: ACHHUZ7DOuAtuBK3Iff6oPj96fLuJpTCxN2VIi8/3HIDxXA7fbYUZDEFXcoJah1/xvsR2ICTR9y5Ew== X-Received: by 2002:ac2:514d:0:b0:4f0:6a4:1377 with SMTP id q13-20020ac2514d000000b004f006a41377mr407511lfd.53.1683285421175; Fri, 05 May 2023 04:17:01 -0700 (PDT) Received: from [127.0.1.1] ([85.235.12.238]) by smtp.gmail.com with ESMTPSA id d7-20020a05651221c700b004edbf013fe7sm251665lft.49.2023.05.05.04.17.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 May 2023 04:17:00 -0700 (PDT) From: Linus Walleij Date: Fri, 05 May 2023 13:16:55 +0200 Subject: [PATCH v3 1/3] Input: ads7846 - Convert to use software nodes MIME-Version: 1.0 Message-Id: <20230430-nokia770-regression-v3-1-a6d0a89ffa8b@linaro.org> References: <20230430-nokia770-regression-v3-0-a6d0a89ffa8b@linaro.org> In-Reply-To: <20230430-nokia770-regression-v3-0-a6d0a89ffa8b@linaro.org> To: Aaro Koskinen , Janusz Krzysztofik , Tony Lindgren , Russell King , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Thomas Bogendoerfer , Dmitry Torokhov , Mark Brown , Bartosz Golaszewski , Andreas Kemnade , Helge Deller , Ulf Hansson Cc: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-input@vger.kernel.org, linux-spi@vger.kernel.org, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mmc@vger.kernel.org, Linus Walleij X-Mailer: b4 0.12.1 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org The Nokia 770 is using GPIOs from the global numberspace on the CBUS node to pass down to the LCD controller. This regresses when we let the OMAP GPIO driver use dynamic GPIO base. The Nokia 770 now has dynamic allocation of IRQ numbers, so this needs to be fixed for it to work. As this is the only user of LCD MIPID we can easily augment the driver to use a GPIO descriptor instead and resolve the issue. The platform data .shutdown() callback wasn't even used in the code, but we encode a shutdown asserting RESET in the remove() callback for completeness sake. The CBUS also has the ADS7846 touchscreen attached. Populate the devices on the Nokia 770 CBUS I2C using software nodes instead of platform data quirks. This includes the LCD and the ADS7846 touchscreen so the conversion just brings the LCD along with it as software nodes is an all-or-nothing design pattern. The ADS7846 has some limited support for using GPIO descriptors, let's convert it over completely to using device properties and then fix all remaining boardfile users to provide all platform data using software nodes. Dump the of includes and of_match_ptr() in the ADS7846 driver as part of the job. Since we have to move ADS7846 over to obtaining the GPIOs it is using exclusively from descriptors, we provide descriptor tables for the two remaining in-kernel boardfiles using ADS7846: - PXA Spitz - MIPS Alchemy DB1000 development board It was too hard for me to include software node conversion of these two remaining users at this time: the spitz is using a hscync callback in the platform data that would require further GPIO descriptor conversion of the Spitz, and moving the hsync callback down into the driver: it will just become too big of a job, but it can be done separately. The MIPS Alchemy DB1000 is simply something I cannot test, so take the easier approach of just providing some GPIO descriptors in this case as I don't want the patch to grow too intrusive. Suggested-by: Dmitry Torokhov Fixes: 92bf78b33b0b ("gpio: omap: use dynamic allocation of base") Signed-off-by: Linus Walleij --- ChangeLog v2->v3: - Drop leftover OF ifdefs no longer needed and causing compile errors. --- arch/arm/mach-omap1/board-nokia770.c | 98 +++++++++++++++++---------- arch/arm/mach-pxa/spitz.c | 11 +++- arch/mips/alchemy/devboards/db1000.c | 11 +++- drivers/input/touchscreen/ads7846.c | 113 ++++++++++++-------------------- drivers/video/fbdev/omap/lcd_mipid.c | 10 +++ include/linux/platform_data/lcd-mipid.h | 2 - include/linux/spi/ads7846.h | 2 - 7 files changed, 135 insertions(+), 112 deletions(-) diff --git a/arch/arm/mach-omap1/board-nokia770.c b/arch/arm/mach-omap1/board-nokia770.c index a501a473ffd6..918e86634bc9 100644 --- a/arch/arm/mach-omap1/board-nokia770.c +++ b/arch/arm/mach-omap1/board-nokia770.c @@ -8,15 +8,16 @@ #include #include #include +#include #include #include #include #include +#include #include #include #include -#include #include #include @@ -35,6 +36,25 @@ #include "clock.h" #include "mmc.h" +static const struct software_node nokia770_mpuio_gpiochip_node = { + .name = "mpuio", +}; + +static const struct software_node nokia770_gpiochip1_node = { + .name = "gpio-0-15", +}; + +static const struct software_node nokia770_gpiochip2_node = { + .name = "gpio-16-31", +}; + +static const struct software_node *nokia770_gpiochip_nodes[] = { + &nokia770_mpuio_gpiochip_node, + &nokia770_gpiochip1_node, + &nokia770_gpiochip2_node, + NULL, +}; + #define ADS7846_PENDOWN_GPIO 15 static const unsigned int nokia770_keymap[] = { @@ -85,40 +105,46 @@ static struct platform_device *nokia770_devices[] __initdata = { &nokia770_kp_device, }; -static void mipid_shutdown(struct mipid_platform_data *pdata) -{ - if (pdata->nreset_gpio != -1) { - printk(KERN_INFO "shutdown LCD\n"); - gpio_set_value(pdata->nreset_gpio, 0); - msleep(120); - } -} - -static struct mipid_platform_data nokia770_mipid_platform_data = { - .shutdown = mipid_shutdown, -}; +static struct mipid_platform_data nokia770_mipid_platform_data = { }; static const struct omap_lcd_config nokia770_lcd_config __initconst = { .ctrl_name = "hwa742", }; +static const struct property_entry nokia770_mipid_props[] = { + PROPERTY_ENTRY_GPIO("reset-gpios", &nokia770_gpiochip1_node, + 13, GPIO_ACTIVE_LOW), + { } +}; + +static const struct software_node nokia770_mipid_swnode = { + .name = "lcd_mipid", + .properties = nokia770_mipid_props, +}; + static void __init mipid_dev_init(void) { - nokia770_mipid_platform_data.nreset_gpio = 13; nokia770_mipid_platform_data.data_lines = 16; omapfb_set_lcd_config(&nokia770_lcd_config); } -static struct ads7846_platform_data nokia770_ads7846_platform_data __initdata = { - .x_max = 0x0fff, - .y_max = 0x0fff, - .x_plate_ohms = 180, - .pressure_max = 255, - .debounce_max = 10, - .debounce_tol = 3, - .debounce_rep = 1, - .gpio_pendown = ADS7846_PENDOWN_GPIO, +static const struct property_entry nokia770_ads7846_props[] = { + PROPERTY_ENTRY_U32("touchscreen-size-x", 4096), + PROPERTY_ENTRY_U32("touchscreen-size-y", 4096), + PROPERTY_ENTRY_U32("touchscreen-max-pressure", 256), + PROPERTY_ENTRY_U32("touchscreen-average-samples", 10), + PROPERTY_ENTRY_U16("ti,x-plate-ohms", 180), + PROPERTY_ENTRY_U16("ti,debounce-tol", 3), + PROPERTY_ENTRY_U16("ti,debounce-rep", 1), + PROPERTY_ENTRY_GPIO("pendown-gpios", &nokia770_gpiochip1_node, + ADS7846_PENDOWN_GPIO, GPIO_ACTIVE_HIGH), + { } +}; + +static const struct software_node nokia770_ads7846_swnode = { + .name = "ads7846", + .properties = nokia770_ads7846_props, }; static struct spi_board_info nokia770_spi_board_info[] __initdata = { @@ -128,13 +154,14 @@ static struct spi_board_info nokia770_spi_board_info[] __initdata = { .chip_select = 3, .max_speed_hz = 12000000, .platform_data = &nokia770_mipid_platform_data, + .swnode = &nokia770_mipid_swnode, }, [1] = { .modalias = "ads7846", .bus_num = 2, .chip_select = 0, .max_speed_hz = 2500000, - .platform_data = &nokia770_ads7846_platform_data, + .swnode = &nokia770_ads7846_swnode, }, }; @@ -212,14 +239,16 @@ static inline void nokia770_mmc_init(void) #endif #if IS_ENABLED(CONFIG_I2C_CBUS_GPIO) -static struct gpiod_lookup_table nokia770_cbus_gpio_table = { - .dev_id = "i2c-cbus-gpio.2", - .table = { - GPIO_LOOKUP_IDX("mpuio", 9, NULL, 0, 0), /* clk */ - GPIO_LOOKUP_IDX("mpuio", 10, NULL, 1, 0), /* dat */ - GPIO_LOOKUP_IDX("mpuio", 11, NULL, 2, 0), /* sel */ - { }, - }, + +static const struct software_node_ref_args nokia770_cbus_gpio_refs[] = { + SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 9, 0), + SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 10, 0), + SOFTWARE_NODE_REFERENCE(&nokia770_mpuio_gpiochip_swnode, 11, 0), +}; + +static const struct property_entry nokia770_ads7846_props[] = { + PROPERTY_ENTRY_REF_ARRAY("gpios", nokia770_cbus_gpio_refs), + { } }; static struct platform_device nokia770_cbus_device = { @@ -253,7 +282,8 @@ static void __init nokia770_cbus_init(void) nokia770_i2c_board_info_2[1].irq = gpio_to_irq(tahvo_irq_gpio); i2c_register_board_info(2, nokia770_i2c_board_info_2, ARRAY_SIZE(nokia770_i2c_board_info_2)); - gpiod_add_lookup_table(&nokia770_cbus_gpio_table); + device_create_managed_software_node(&nokia770_cbus_device.dev, + nokia770_cbus_props, NULL); platform_device_register(&nokia770_cbus_device); } #else /* CONFIG_I2C_CBUS_GPIO */ @@ -273,8 +303,8 @@ static void __init omap_nokia770_init(void) /* Unmask SleepX signal */ omap_writew((omap_readw(0xfffb5004) & ~2), 0xfffb5004); + software_node_register_node_group(nokia770_gpiochip_nodes); platform_add_devices(nokia770_devices, ARRAY_SIZE(nokia770_devices)); - nokia770_spi_board_info[1].irq = gpio_to_irq(15); spi_register_board_info(nokia770_spi_board_info, ARRAY_SIZE(nokia770_spi_board_info)); omap_serial_init(); diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c index 4325bdc2b9ff..c473304b4e3d 100644 --- a/arch/arm/mach-pxa/spitz.c +++ b/arch/arm/mach-pxa/spitz.c @@ -506,10 +506,18 @@ static struct ads7846_platform_data spitz_ads7846_info = { .x_plate_ohms = 419, .y_plate_ohms = 486, .pressure_max = 1024, - .gpio_pendown = SPITZ_GPIO_TP_INT, .wait_for_sync = spitz_ads7846_wait_for_hsync, }; +static struct gpiod_lookup_table spitz_ads7846_gpio_table = { + .dev_id = "spi2.0", + .table = { + GPIO_LOOKUP("gpio-pxa", SPITZ_GPIO_TP_INT, + "pendown", GPIO_ACTIVE_HIGH), + { }, + }, +}; + static void spitz_bl_kick_battery(void) { void (*kick_batt)(void); @@ -594,6 +602,7 @@ static void __init spitz_spi_init(void) else gpiod_add_lookup_table(&spitz_lcdcon_gpio_table); + gpiod_add_lookup_table(&spitz_ads7846_gpio_table); gpiod_add_lookup_table(&spitz_spi_gpio_table); pxa2xx_set_spi_info(2, &spitz_spi_info); spi_register_board_info(ARRAY_AND_SIZE(spitz_spi_devices)); diff --git a/arch/mips/alchemy/devboards/db1000.c b/arch/mips/alchemy/devboards/db1000.c index 2c52ee27b4f2..f37644859f89 100644 --- a/arch/mips/alchemy/devboards/db1000.c +++ b/arch/mips/alchemy/devboards/db1000.c @@ -381,13 +381,21 @@ static struct platform_device db1100_mmc1_dev = { static struct ads7846_platform_data db1100_touch_pd = { .model = 7846, .vref_mv = 3300, - .gpio_pendown = 21, }; static struct spi_gpio_platform_data db1100_spictl_pd = { .num_chipselect = 1, }; +static struct gpiod_lookup_table db1100_touch_gpio_table = { + .dev_id = "spi0.0", + .table = { + GPIO_LOOKUP("alchemy-gpio2", 21, + "pendown", GPIO_ACTIVE_HIGH), + { }, + }, +}; + static struct spi_board_info db1100_spi_info[] __initdata = { [0] = { .modalias = "ads7846", @@ -474,6 +482,7 @@ int __init db1000_dev_setup(void) pfc |= (1 << 0); /* SSI0 pins as GPIOs */ alchemy_wrsys(pfc, AU1000_SYS_PINFUNC); + gpiod_add_lookup_table(&db1100_touch_gpio_table); spi_register_board_info(db1100_spi_info, ARRAY_SIZE(db1100_spi_info)); diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index bb1058b1e7fd..91536b0b9393 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -24,11 +24,8 @@ #include #include #include -#include -#include -#include +#include #include -#include #include #include #include @@ -140,7 +137,7 @@ struct ads7846 { int (*filter)(void *data, int data_idx, int *val); void *filter_data; int (*get_pendown_state)(void); - int gpio_pendown; + struct gpio_desc *gpio_pendown; void (*wait_for_sync)(void); }; @@ -223,7 +220,7 @@ static int get_pendown_state(struct ads7846 *ts) if (ts->get_pendown_state) return ts->get_pendown_state(); - return !gpio_get_value(ts->gpio_pendown); + return !gpiod_get_value(ts->gpio_pendown); } static void ads7846_report_pen_up(struct ads7846 *ts) @@ -989,8 +986,6 @@ static int ads7846_setup_pendown(struct spi_device *spi, struct ads7846 *ts, const struct ads7846_platform_data *pdata) { - int err; - /* * REVISIT when the irq can be triggered active-low, or if for some * reason the touchscreen isn't hooked up, we don't need to access @@ -999,25 +994,15 @@ static int ads7846_setup_pendown(struct spi_device *spi, if (pdata->get_pendown_state) { ts->get_pendown_state = pdata->get_pendown_state; - } else if (gpio_is_valid(pdata->gpio_pendown)) { - - err = devm_gpio_request_one(&spi->dev, pdata->gpio_pendown, - GPIOF_IN, "ads7846_pendown"); - if (err) { - dev_err(&spi->dev, - "failed to request/setup pendown GPIO%d: %d\n", - pdata->gpio_pendown, err); - return err; + } else { + ts->gpio_pendown = gpiod_get(&spi->dev, "pendown", GPIOD_IN); + if (IS_ERR(ts->gpio_pendown)) { + dev_err(&spi->dev, "failed to request pendown GPIO\n"); + return PTR_ERR(ts->gpio_pendown); } - - ts->gpio_pendown = pdata->gpio_pendown; - if (pdata->gpio_pendown_debounce) - gpiod_set_debounce(gpio_to_desc(ts->gpio_pendown), + gpiod_set_debounce(ts->gpio_pendown, pdata->gpio_pendown_debounce); - } else { - dev_err(&spi->dev, "no get_pendown_state nor gpio_pendown?\n"); - return -EINVAL; } return 0; @@ -1119,7 +1104,6 @@ static int ads7846_setup_spi_msg(struct ads7846 *ts, return 0; } -#ifdef CONFIG_OF static const struct of_device_id ads7846_dt_ids[] = { { .compatible = "ti,tsc2046", .data = (void *) 7846 }, { .compatible = "ti,ads7843", .data = (void *) 7843 }, @@ -1130,20 +1114,14 @@ static const struct of_device_id ads7846_dt_ids[] = { }; MODULE_DEVICE_TABLE(of, ads7846_dt_ids); -static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev) +static const struct ads7846_platform_data *ads7846_get_props(struct device *dev) { struct ads7846_platform_data *pdata; - struct device_node *node = dev->of_node; - const struct of_device_id *match; + const struct platform_device_id *pdev_id; u32 value; - if (!node) { - dev_err(dev, "Device does not have associated DT data\n"); - return ERR_PTR(-EINVAL); - } - - match = of_match_device(ads7846_dt_ids, dev); - if (!match) { + pdev_id = device_get_match_data(dev); + if (!pdev_id) { dev_err(dev, "Unknown device model\n"); return ERR_PTR(-EINVAL); } @@ -1152,60 +1130,51 @@ static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev) if (!pdata) return ERR_PTR(-ENOMEM); - pdata->model = (unsigned long)match->data; + pdata->model = (unsigned long)pdev_id->driver_data; - of_property_read_u16(node, "ti,vref-delay-usecs", - &pdata->vref_delay_usecs); - of_property_read_u16(node, "ti,vref-mv", &pdata->vref_mv); - pdata->keep_vref_on = of_property_read_bool(node, "ti,keep-vref-on"); + device_property_read_u16(dev, "ti,vref-delay-usecs", + &pdata->vref_delay_usecs); + device_property_read_u16(dev, "ti,vref-mv", &pdata->vref_mv); + pdata->keep_vref_on = device_property_read_bool(dev, "ti,keep-vref-on"); - pdata->swap_xy = of_property_read_bool(node, "ti,swap-xy"); + pdata->swap_xy = device_property_read_bool(dev, "ti,swap-xy"); - of_property_read_u16(node, "ti,settle-delay-usec", - &pdata->settle_delay_usecs); - of_property_read_u16(node, "ti,penirq-recheck-delay-usecs", - &pdata->penirq_recheck_delay_usecs); + device_property_read_u16(dev, "ti,settle-delay-usec", + &pdata->settle_delay_usecs); + device_property_read_u16(dev, "ti,penirq-recheck-delay-usecs", + &pdata->penirq_recheck_delay_usecs); - of_property_read_u16(node, "ti,x-plate-ohms", &pdata->x_plate_ohms); - of_property_read_u16(node, "ti,y-plate-ohms", &pdata->y_plate_ohms); + device_property_read_u16(dev, "ti,x-plate-ohms", &pdata->x_plate_ohms); + device_property_read_u16(dev, "ti,y-plate-ohms", &pdata->y_plate_ohms); - of_property_read_u16(node, "ti,x-min", &pdata->x_min); - of_property_read_u16(node, "ti,y-min", &pdata->y_min); - of_property_read_u16(node, "ti,x-max", &pdata->x_max); - of_property_read_u16(node, "ti,y-max", &pdata->y_max); + device_property_read_u16(dev, "ti,x-min", &pdata->x_min); + device_property_read_u16(dev, "ti,y-min", &pdata->y_min); + device_property_read_u16(dev, "ti,x-max", &pdata->x_max); + device_property_read_u16(dev, "ti,y-max", &pdata->y_max); /* * touchscreen-max-pressure gets parsed during * touchscreen_parse_properties() */ - of_property_read_u16(node, "ti,pressure-min", &pdata->pressure_min); - if (!of_property_read_u32(node, "touchscreen-min-pressure", &value)) + device_property_read_u16(dev, "ti,pressure-min", &pdata->pressure_min); + if (!device_property_read_u32(dev, "touchscreen-min-pressure", &value)) pdata->pressure_min = (u16) value; - of_property_read_u16(node, "ti,pressure-max", &pdata->pressure_max); + device_property_read_u16(dev, "ti,pressure-max", &pdata->pressure_max); - of_property_read_u16(node, "ti,debounce-max", &pdata->debounce_max); - if (!of_property_read_u32(node, "touchscreen-average-samples", &value)) + device_property_read_u16(dev, "ti,debounce-max", &pdata->debounce_max); + if (!device_property_read_u32(dev, "touchscreen-average-samples", &value)) pdata->debounce_max = (u16) value; - of_property_read_u16(node, "ti,debounce-tol", &pdata->debounce_tol); - of_property_read_u16(node, "ti,debounce-rep", &pdata->debounce_rep); + device_property_read_u16(dev, "ti,debounce-tol", &pdata->debounce_tol); + device_property_read_u16(dev, "ti,debounce-rep", &pdata->debounce_rep); - of_property_read_u32(node, "ti,pendown-gpio-debounce", + device_property_read_u32(dev, "ti,pendown-gpio-debounce", &pdata->gpio_pendown_debounce); - pdata->wakeup = of_property_read_bool(node, "wakeup-source") || - of_property_read_bool(node, "linux,wakeup"); - - pdata->gpio_pendown = of_get_named_gpio(dev->of_node, "pendown-gpio", 0); + pdata->wakeup = device_property_read_bool(dev, "wakeup-source") || + device_property_read_bool(dev, "linux,wakeup"); return pdata; } -#else -static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev) -{ - dev_err(dev, "no platform data defined\n"); - return ERR_PTR(-EINVAL); -} -#endif static void ads7846_regulator_disable(void *regulator) { @@ -1269,7 +1238,7 @@ static int ads7846_probe(struct spi_device *spi) pdata = dev_get_platdata(dev); if (!pdata) { - pdata = ads7846_probe_dt(dev); + pdata = ads7846_get_props(dev); if (IS_ERR(pdata)) return PTR_ERR(pdata); } @@ -1426,7 +1395,7 @@ static struct spi_driver ads7846_driver = { .driver = { .name = "ads7846", .pm = pm_sleep_ptr(&ads7846_pm), - .of_match_table = of_match_ptr(ads7846_dt_ids), + .of_match_table = ads7846_dt_ids, }, .probe = ads7846_probe, .remove = ads7846_remove, diff --git a/drivers/video/fbdev/omap/lcd_mipid.c b/drivers/video/fbdev/omap/lcd_mipid.c index 03cff39d392d..e4a7f0b824ff 100644 --- a/drivers/video/fbdev/omap/lcd_mipid.c +++ b/drivers/video/fbdev/omap/lcd_mipid.c @@ -7,6 +7,7 @@ */ #include #include +#include #include #include #include @@ -41,6 +42,7 @@ struct mipid_device { when we can issue the next sleep in/out command */ unsigned long hw_guard_wait; /* max guard time in jiffies */ + struct gpio_desc *reset; struct omapfb_device *fbdev; struct spi_device *spi; @@ -556,6 +558,12 @@ static int mipid_spi_probe(struct spi_device *spi) return -ENOMEM; } + /* This will de-assert RESET if active */ + md->reset = gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(md->reset)) + return dev_err_probe(&spi->dev, PTR_ERR(md->reset), + "no reset GPIO line\n"); + spi->mode = SPI_MODE_0; md->spi = spi; dev_set_drvdata(&spi->dev, md); @@ -574,6 +582,8 @@ static void mipid_spi_remove(struct spi_device *spi) { struct mipid_device *md = dev_get_drvdata(&spi->dev); + /* Asserts RESET */ + gpiod_set_value(md->reset, 1); mipid_disable(&md->panel); kfree(md); } diff --git a/include/linux/platform_data/lcd-mipid.h b/include/linux/platform_data/lcd-mipid.h index 63f05eb23827..4927cfc5158c 100644 --- a/include/linux/platform_data/lcd-mipid.h +++ b/include/linux/platform_data/lcd-mipid.h @@ -15,10 +15,8 @@ enum mipid_test_result { #ifdef __KERNEL__ struct mipid_platform_data { - int nreset_gpio; int data_lines; - void (*shutdown)(struct mipid_platform_data *pdata); void (*set_bklight_level)(struct mipid_platform_data *pdata, int level); int (*get_bklight_level)(struct mipid_platform_data *pdata); diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h index d424c1aadf38..a04c1c34c344 100644 --- a/include/linux/spi/ads7846.h +++ b/include/linux/spi/ads7846.h @@ -35,8 +35,6 @@ struct ads7846_platform_data { u16 debounce_tol; /* tolerance used for filtering */ u16 debounce_rep; /* additional consecutive good readings * required after the first two */ - int gpio_pendown; /* the GPIO used to decide the pendown - * state if get_pendown_state == NULL */ int gpio_pendown_debounce; /* platform specific debounce time for * the gpio_pendown */ int (*get_pendown_state)(void);