From patchwork Tue Jan 15 04:47:09 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nishad Kamdar X-Patchwork-Id: 10764001 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 35F6A6C5 for ; Tue, 15 Jan 2019 04:47:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0C57E2B745 for ; Tue, 15 Jan 2019 04:47:26 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F1FE92B7BF; Tue, 15 Jan 2019 04:47:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 209122B745 for ; Tue, 15 Jan 2019 04:47:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727354AbfAOErW (ORCPT ); Mon, 14 Jan 2019 23:47:22 -0500 Received: from mail-pg1-f193.google.com ([209.85.215.193]:44856 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727223AbfAOErW (ORCPT ); Mon, 14 Jan 2019 23:47:22 -0500 Received: by mail-pg1-f193.google.com with SMTP id t13so663771pgr.11; Mon, 14 Jan 2019 20:47:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=bIXMNxu87tt8my4EbfIVixbqmCEEAp2vED7MChWChTQ=; b=QtF5Opv+7N7tZpb8Bk7yoLERBZgrtXY9NnzSL++vU+B8YHVkv3FyiDuui7vJG5CCXY HL6eRwId7bil63Z23e8z8GpDdUk1UnY7V0sKHpmDqeDZLqi3Dd76VLnQSB1in6hBBuqM xxs93UgjTbAsQ08aZvmbJDR6L0AG8eXU3tb+3LCNYaZlngO80xOarnbZRaGROxL5cCef tUmxg1VCyjJ0KGGHgpgV2bdNyIhjPbrDQ//WcIHd7MMsze2Im9a4bV66ZPAviLjrXd3o HKanNy+IERCMP1uUEt7rCj0YO++TsMRCVMStiV2S1bbEKFS0TQd5li7936sTCoA/kHRm T5rA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=bIXMNxu87tt8my4EbfIVixbqmCEEAp2vED7MChWChTQ=; b=XSA4oToIIEIuhkEiJg0wSh6+qcByyESUrWp1KFVXDvVJ6uOBrEJblzE3ierpcS/ai+ SFJEZSol9LJc6OS6zo409coUT7MetXSEHKsVBfseicCCrVVyzswXGlAd09O2kxUSRuVQ i1Wsy9tmpLgkrqH9FToe8P1U8Xno2kMqUr/xd6fixT9bxqclyjG/2DZKZ5Xoq1n2DNPd /2SpNwGfqfNR9U+mclxOcTkScXzwqOau5LkXoT1l8btICnrrSR6ZoQlFLxe5PjG8EEbf 44X7nhbr1UMVHy//xpanZoGfQWoCObAgPgn3KQd9f8wnfUtL/kZ7PQzbovXFdSJ5b/t8 p5zw== X-Gm-Message-State: AJcUukdIZgOOpY5i1EZ4Xm8qkTquAqMI0Sll5eP4BD/Wwce/+UImU52B mSB8VBTOoiGH6m7BfPd8Ows= X-Google-Smtp-Source: ALg8bN4dLcW8UiNzecbMqYwFcDyLg8JvPOkdAczRCKNnOsmjjfJvDWFeXU/RMk/Y7QlMJhF4ygLlAw== X-Received: by 2002:a63:4342:: with SMTP id q63mr2066831pga.63.1547527639084; Mon, 14 Jan 2019 20:47:19 -0800 (PST) Received: from nishad ([106.51.25.107]) by smtp.gmail.com with ESMTPSA id h19sm2249653pfn.114.2019.01.14.20.47.12 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 14 Jan 2019 20:47:18 -0800 (PST) Date: Tue, 15 Jan 2019 10:17:09 +0530 From: Nishad Kamdar To: Greg Kroah-Hartman Cc: Leonardo =?utf-8?b?QnLDoXM=?= , Tim Cofala , Felix Siegel , Matthias Wolf , Renato Soma , Daniel Vetter , Jani Nikula , Lee Jones , Mamta Shukla , YueHaibing , Radek =?utf-8?q?Dost=C3=A1l?= , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Nishad Kamdar Subject: [PATCH v2] Staging: fbtft: Switch to the gpio descriptor interface Message-ID: <20190115044704.GA20989@nishad> MIME-Version: 1.0 Content-Disposition: inline User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This switches the fbtft driver to use GPIO descriptors rather than numerical gpios: Utilize the GPIO library's intrinsic handling of OF GPIOs and polarity. If the line is flagged active low, gpiolib will deal with this. Remove gpios from platform device structure. Neither assign statically numbers to gpios in platform device nor allow gpios to be parsed as module parameters. Signed-off-by: Nishad Kamdar Changes in v2: - Merge all patches in a single patch. This is because the first patch changes par->gpio from an int to a pointer so all the checks have to be updated in the same patch. Otherwie it breaks 'git bisect'. --- drivers/staging/fbtft/fb_agm1264k-fl.c | 52 ++-- drivers/staging/fbtft/fb_bd663474.c | 6 +- drivers/staging/fbtft/fb_ili9163.c | 6 +- drivers/staging/fbtft/fb_ili9320.c | 2 +- drivers/staging/fbtft/fb_ili9325.c | 6 +- drivers/staging/fbtft/fb_ili9340.c | 2 +- drivers/staging/fbtft/fb_pcd8544.c | 4 +- drivers/staging/fbtft/fb_ra8875.c | 4 +- drivers/staging/fbtft/fb_s6d1121.c | 6 +- drivers/staging/fbtft/fb_sh1106.c | 2 +- drivers/staging/fbtft/fb_ssd1289.c | 6 +- drivers/staging/fbtft/fb_ssd1305.c | 4 +- drivers/staging/fbtft/fb_ssd1306.c | 4 +- drivers/staging/fbtft/fb_ssd1325.c | 6 +- drivers/staging/fbtft/fb_ssd1331.c | 10 +- drivers/staging/fbtft/fb_ssd1351.c | 2 +- drivers/staging/fbtft/fb_tls8204.c | 6 +- drivers/staging/fbtft/fb_uc1611.c | 4 +- drivers/staging/fbtft/fb_uc1701.c | 6 +- drivers/staging/fbtft/fb_upd161704.c | 6 +- drivers/staging/fbtft/fb_watterott.c | 4 +- drivers/staging/fbtft/fbtft-bus.c | 6 +- drivers/staging/fbtft/fbtft-core.c | 173 +++---------- drivers/staging/fbtft/fbtft-io.c | 26 +- drivers/staging/fbtft/fbtft.h | 21 +- drivers/staging/fbtft/fbtft_device.c | 344 +------------------------ drivers/staging/fbtft/flexfb.c | 12 +- 27 files changed, 143 insertions(+), 587 deletions(-) diff --git a/drivers/staging/fbtft/fb_agm1264k-fl.c b/drivers/staging/fbtft/fb_agm1264k-fl.c index f6f30f5bf15a..8f27bd8da17d 100644 --- a/drivers/staging/fbtft/fb_agm1264k-fl.c +++ b/drivers/staging/fbtft/fb_agm1264k-fl.c @@ -8,7 +8,7 @@ #include #include #include -#include +#include #include #include @@ -79,14 +79,14 @@ static int init_display(struct fbtft_par *par) static void reset(struct fbtft_par *par) { - if (par->gpio.reset == -1) + if (!par->gpio.reset) return; dev_dbg(par->info->device, "%s()\n", __func__); - gpio_set_value(par->gpio.reset, 0); + gpiod_set_value(par->gpio.reset, 0); udelay(20); - gpio_set_value(par->gpio.reset, 1); + gpiod_set_value(par->gpio.reset, 1); mdelay(120); } @@ -98,30 +98,30 @@ static int verify_gpios(struct fbtft_par *par) dev_dbg(par->info->device, "%s()\n", __func__); - if (par->EPIN < 0) { + if (!par->EPIN) { dev_err(par->info->device, "Missing info about 'wr' (aka E) gpio. Aborting.\n"); return -EINVAL; } for (i = 0; i < 8; ++i) { - if (par->gpio.db[i] < 0) { + if (!par->gpio.db[i]) { dev_err(par->info->device, "Missing info about 'db[%i]' gpio. Aborting.\n", i); return -EINVAL; } } - if (par->CS0 < 0) { + if (!par->CS0) { dev_err(par->info->device, "Missing info about 'cs0' gpio. Aborting.\n"); return -EINVAL; } - if (par->CS1 < 0) { + if (!par->CS1) { dev_err(par->info->device, "Missing info about 'cs1' gpio. Aborting.\n"); return -EINVAL; } - if (par->RW < 0) { + if (!par->RW) { dev_err(par->info->device, "Missing info about 'rw' gpio. Aborting.\n"); return -EINVAL; @@ -139,22 +139,22 @@ request_gpios_match(struct fbtft_par *par, const struct fbtft_gpio *gpio) if (strcasecmp(gpio->name, "wr") == 0) { /* left ks0108 E pin */ par->EPIN = gpio->gpio; - return GPIOF_OUT_INIT_LOW; + return GPIOD_OUT_LOW; } else if (strcasecmp(gpio->name, "cs0") == 0) { /* left ks0108 controller pin */ par->CS0 = gpio->gpio; - return GPIOF_OUT_INIT_HIGH; + return GPIOD_OUT_HIGH; } else if (strcasecmp(gpio->name, "cs1") == 0) { /* right ks0108 controller pin */ par->CS1 = gpio->gpio; - return GPIOF_OUT_INIT_HIGH; + return GPIOD_OUT_HIGH; } /* if write (rw = 0) e(1->0) perform write */ /* if read (rw = 1) e(0->1) set data on D0-7*/ else if (strcasecmp(gpio->name, "rw") == 0) { par->RW = gpio->gpio; - return GPIOF_OUT_INIT_LOW; + return GPIOD_OUT_LOW; } return FBTFT_GPIO_NO_MATCH; @@ -194,15 +194,15 @@ static void write_reg8_bus8(struct fbtft_par *par, int len, ...) /* select chip */ if (*buf) { /* cs1 */ - gpio_set_value(par->CS0, 1); - gpio_set_value(par->CS1, 0); + gpiod_set_value(par->CS0, 1); + gpiod_set_value(par->CS1, 0); } else { /* cs0 */ - gpio_set_value(par->CS0, 0); - gpio_set_value(par->CS1, 1); + gpiod_set_value(par->CS0, 0); + gpiod_set_value(par->CS1, 1); } - gpio_set_value(par->RS, 0); /* RS->0 (command mode) */ + gpiod_set_value(par->RS, 0); /* RS->0 (command mode) */ len--; if (len) { @@ -364,7 +364,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len) write_reg(par, 0x00, (0x17 << 3) | (u8)y); /* write bitmap */ - gpio_set_value(par->RS, 1); /* RS->1 (data mode) */ + gpiod_set_value(par->RS, 1); /* RS->1 (data mode) */ ret = par->fbtftops.write(par, buf, len); if (ret < 0) dev_err(par->info->device, @@ -387,7 +387,7 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len) write_reg(par, 0x01, (0x17 << 3) | (u8)y); /* write bitmap */ - gpio_set_value(par->RS, 1); /* RS->1 (data mode) */ + gpiod_set_value(par->RS, 1); /* RS->1 (data mode) */ par->fbtftops.write(par, buf, len); if (ret < 0) dev_err(par->info->device, @@ -397,8 +397,8 @@ static int write_vmem(struct fbtft_par *par, size_t offset, size_t len) } kfree(convert_buf); - gpio_set_value(par->CS0, 1); - gpio_set_value(par->CS1, 1); + gpiod_set_value(par->CS0, 1); + gpiod_set_value(par->CS1, 1); return ret; } @@ -408,7 +408,7 @@ static int write(struct fbtft_par *par, void *buf, size_t len) fbtft_par_dbg_hex(DEBUG_WRITE, par, par->info->device, u8, buf, len, "%s(len=%d): ", __func__, len); - gpio_set_value(par->RW, 0); /* set write mode */ + gpiod_set_value(par->RW, 0); /* set write mode */ while (len--) { u8 i, data; @@ -417,12 +417,12 @@ static int write(struct fbtft_par *par, void *buf, size_t len) /* set data bus */ for (i = 0; i < 8; ++i) - gpio_set_value(par->gpio.db[i], data & (1 << i)); + gpiod_set_value(par->gpio.db[i], data & (1 << i)); /* set E */ - gpio_set_value(par->EPIN, 1); + gpiod_set_value(par->EPIN, 1); udelay(5); /* unset E - write */ - gpio_set_value(par->EPIN, 0); + gpiod_set_value(par->EPIN, 0); udelay(1); } diff --git a/drivers/staging/fbtft/fb_bd663474.c b/drivers/staging/fbtft/fb_bd663474.c index a58c514f4721..b6c6d66e4eb1 100644 --- a/drivers/staging/fbtft/fb_bd663474.c +++ b/drivers/staging/fbtft/fb_bd663474.c @@ -12,7 +12,7 @@ #include #include #include -#include +#include #include #include "fbtft.h" @@ -24,8 +24,8 @@ static int init_display(struct fbtft_par *par) { - if (par->gpio.cs != -1) - gpio_set_value(par->gpio.cs, 0); /* Activate chip */ + if (!par->gpio.cs) + gpiod_set_value(par->gpio.cs, 0); /* Activate chip */ par->fbtftops.reset(par); diff --git a/drivers/staging/fbtft/fb_ili9163.c b/drivers/staging/fbtft/fb_ili9163.c index 86e140244aab..d609a2b67db9 100644 --- a/drivers/staging/fbtft/fb_ili9163.c +++ b/drivers/staging/fbtft/fb_ili9163.c @@ -11,7 +11,7 @@ #include #include #include -#include +#include #include #include