From patchwork Thu Mar 6 16:23:32 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Shiyan X-Patchwork-Id: 3785241 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 69620BF540 for ; Thu, 6 Mar 2014 16:26:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7DF80201E7 for ; Thu, 6 Mar 2014 16:26:55 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 885BF201BB for ; Thu, 6 Mar 2014 16:26:54 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLb6i-0005D2-SQ; Thu, 06 Mar 2014 16:25:18 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLb5h-0005Qh-Ny; Thu, 06 Mar 2014 16:24:13 +0000 Received: from smtp48.i.mail.ru ([94.100.177.108]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLb5V-0005Nf-96 for linux-arm-kernel@lists.infradead.org; Thu, 06 Mar 2014 16:24:03 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mail.ru; s=mail2; h=Message-Id:Date:Subject:Cc:To:From; bh=UyZYZwYrV7Kt/sGsqg/xfPe2b4gvM8o1ITFatr9Fe3w=; b=QAwdA/3ocR2IQHjeVYgZSp6XjoaVJU5ahN08nhvxVcstZk082nZgEuXYGoqWRxFhCoHUE4iTEFlndyptcqzhq0fALYoqWwHRTm8FLuALc/cqzpwd+l0+GjT/6Xtbzw4TdI6owNgzz/dlmDX9Dw/C7mkaTT/B0Ll0R/rxiizdKi0=; Received: from [188.134.40.128] (port=64729 helo=shc.zet) by smtp48.i.mail.ru with esmtpa (envelope-from ) id 1WLb57-00065n-Jw; Thu, 06 Mar 2014 20:23:37 +0400 From: Alexander Shiyan To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/2] ARM: i.MX: mx21ads: Use fixed voltage regulator for LCD power Date: Thu, 6 Mar 2014 20:23:32 +0400 Message-Id: <1394123013-28562-1-git-send-email-shc_work@mail.ru> X-Mailer: git-send-email 1.8.3.2 X-Mras: Ok X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140306_112401_870075_1C3DD0A8 X-CRM114-Status: GOOD ( 12.35 ) X-Spam-Score: -2.0 (--) Cc: Shawn Guo , Alexander Shiyan , Sascha Hauer X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, FREEMAIL_FROM,RCVD_IN_DNSWL_MED,T_DKIM_INVALID,T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Instead of using init() and exit() hooks from framebuffer driver to control power of LCD, introduce fixed voltage regulator for this purpose. Signed-off-by: Alexander Shiyan --- arch/arm/mach-imx/mach-mx21ads.c | 45 +++++++++++++++++++++++++--------------- 1 file changed, 28 insertions(+), 17 deletions(-) diff --git a/arch/arm/mach-imx/mach-mx21ads.c b/arch/arm/mach-imx/mach-mx21ads.c index 8742594..0b8e63f 100644 --- a/arch/arm/mach-imx/mach-mx21ads.c +++ b/arch/arm/mach-imx/mach-mx21ads.c @@ -19,6 +19,8 @@ #include #include #include +#include +#include #include #include #include @@ -191,22 +193,32 @@ static struct platform_device mx21ads_mmgpio = { }, }; -static int mx21ads_fb_init(struct platform_device *pdev) -{ - int ret; +static struct regulator_consumer_supply mx21ads_lcd_regulator_consumer = + REGULATOR_SUPPLY("lcd", "imx-fb.0"); - ret = gpio_request(MX21ADS_IO_LCDON, "fb-lcdon"); - if (ret) - return ret; +static struct regulator_init_data mx21ads_lcd_regulator_init_data = { + .constraints = { + .valid_ops_mask = REGULATOR_CHANGE_STATUS, + }, + .consumer_supplies = &mx21ads_lcd_regulator_consumer, + .num_consumer_supplies = 1, +}; - return gpio_direction_output(MX21ADS_IO_LCDON, 1); -} +static struct fixed_voltage_config mx21ads_lcd_regulator_pdata = { + .supply_name = "LCD", + .microvolts = 3300000, + .gpio = MX21ADS_IO_LCDON, + .enable_high = 1, + .init_data = &mx21ads_lcd_regulator_init_data, +}; -static void mx21ads_fb_exit(struct platform_device *pdev) -{ - gpio_set_value(MX21ADS_IO_LCDON, 0); - gpio_free(MX21ADS_IO_LCDON); -} +static struct platform_device mx21ads_lcd_regulator = { + .name = "reg-fixed-voltage", + .id = PLATFORM_DEVID_AUTO, + .dev = { + .platform_data = &mx21ads_lcd_regulator_pdata, + }, +}; /* * Connected is a portrait Sharp-QVGA display @@ -239,9 +251,6 @@ static const struct imx_fb_platform_data mx21ads_fb_data __initconst = { .pwmr = 0x00a903ff, .lscr1 = 0x00120300, .dmacr = 0x00020008, - - .init = mx21ads_fb_init, - .exit = mx21ads_fb_exit, }; static int mx21ads_sdhc_get_ro(struct device *dev) @@ -283,6 +292,7 @@ mx21ads_nand_board_info __initconst = { static struct platform_device *platform_devices[] __initdata = { &mx21ads_mmgpio, + &mx21ads_lcd_regulator, &mx21ads_nor_mtd_device, }; @@ -296,12 +306,13 @@ static void __init mx21ads_board_init(void) imx21_add_imx_uart0(&uart_pdata_rts); imx21_add_imx_uart2(&uart_pdata_norts); imx21_add_imx_uart3(&uart_pdata_rts); - imx21_add_imx_fb(&mx21ads_fb_data); imx21_add_mxc_mmc(0, &mx21ads_sdhc_pdata); imx21_add_mxc_nand(&mx21ads_nand_board_info); platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices)); + imx21_add_imx_fb(&mx21ads_fb_data); + mx21ads_cs8900_resources[1].start = gpio_to_irq(MX21ADS_CS8900A_IRQ_GPIO); mx21ads_cs8900_resources[1].end =