From patchwork Thu Oct 21 21:01:06 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cyril Chemparathy X-Patchwork-Id: 282822 Received: from comal.ext.ti.com (comal.ext.ti.com [198.47.26.152]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o9QEvF9l006023 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Tue, 26 Oct 2010 14:57:36 GMT Received: from dlep36.itg.ti.com ([157.170.170.91]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id o9QEtoE5006114 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 26 Oct 2010 09:55:50 -0500 Received: from linux.omap.com (localhost [127.0.0.1]) by dlep36.itg.ti.com (8.13.8/8.13.8) with ESMTP id o9QEtok1018441; Tue, 26 Oct 2010 09:55:50 -0500 (CDT) Received: from linux.omap.com (localhost [127.0.0.1]) by linux.omap.com (Postfix) with ESMTP id 7357B80655; Tue, 26 Oct 2010 09:55:18 -0500 (CDT) X-Original-To: davinci-linux-open-source@linux.davincidsp.com Delivered-To: davinci-linux-open-source@linux.davincidsp.com Received: from dlep36.itg.ti.com (dlep36.itg.ti.com [157.170.170.91]) by linux.omap.com (Postfix) with ESMTP id 49BEA80626 for ; Thu, 21 Oct 2010 16:01:19 -0500 (CDT) Received: from legion.dal.design.ti.com (localhost [127.0.0.1]) by dlep36.itg.ti.com (8.13.8/8.13.8) with ESMTP id o9LL1I9p011213; Thu, 21 Oct 2010 16:01:18 -0500 (CDT) Received: from gtrgwdeb (gtrgwdeb.telogy.design.ti.com [158.218.102.24]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id o9LL1Hf17658; Thu, 21 Oct 2010 16:01:17 -0500 (CDT) Received: by gtrgwdeb (Postfix, from userid 39959) id E28BF1E1A76; Thu, 21 Oct 2010 17:01:16 -0400 (EDT) From: Cyril Chemparathy To: davinci-linux-open-source@linux.davincidsp.com, spi-devel-general@lists.sourceforge.net, broonie@opensource.wolfsonmicro.com, lrg@slimlogic.co.uk, dbrownell@users.sourceforge.net, grant.likely@secretlab.ca, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, rpurdie@rpsys.net Subject: [PATCH v3 05/12] davinci: add spi devices on tnetv107x evm Date: Thu, 21 Oct 2010 17:01:06 -0400 Message-Id: <1287694873-12904-6-git-send-email-cyril@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1287694873-12904-1-git-send-email-cyril@ti.com> References: <1287694873-12904-1-git-send-email-cyril@ti.com> X-Mailman-Approved-At: Tue, 26 Oct 2010 09:53:48 -0500 X-BeenThere: davinci-linux-open-source@linux.davincidsp.com X-Mailman-Version: 2.1.12 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: davinci-linux-open-source-bounces@linux.davincidsp.com Errors-To: davinci-linux-open-source-bounces@linux.davincidsp.com X-Greylist: Sender succeeded STARTTLS authentication, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Tue, 26 Oct 2010 14:57:36 +0000 (UTC) diff --git a/arch/arm/mach-davinci/board-tnetv107x-evm.c b/arch/arm/mach-davinci/board-tnetv107x-evm.c index 401ad26..c37c5c6 100644 --- a/arch/arm/mach-davinci/board-tnetv107x-evm.c +++ b/arch/arm/mach-davinci/board-tnetv107x-evm.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include @@ -38,6 +39,7 @@ #define EVM_MMC_WP_GPIO 21 #define EVM_MMC_CD_GPIO 24 +#define EVM_SPI_CS_GPIO 54 static int initialize_gpio(int gpio, char *desc) { @@ -203,9 +205,47 @@ static struct matrix_keypad_platform_data keypad_config = { .no_autorepeat = 0, }; +static void spi_select_device(int cs) +{ + static int gpio; + + if (!gpio) { + int ret; + ret = gpio_request(EVM_SPI_CS_GPIO, "spi chipsel"); + if (ret < 0) { + pr_err("cannot open spi chipsel gpio\n"); + gpio = -ENOSYS; + return; + } else { + gpio = EVM_SPI_CS_GPIO; + gpio_direction_output(gpio, 0); + } + } + + if (gpio < 0) + return; + + return gpio_set_value(gpio, cs ? 1 : 0); +} + +static const struct ti_ssp_spi_data spi_master_data = { + .num_cs = 2, + .select = spi_select_device, +}; + static struct ti_ssp_data ssp_config = { .out_clock = 250 * 1000, .dev_data = { + [1] = { + .dev_name = "ti-ssp-spi", + .iosel = SSP_PIN_SEL(0, SSP_CLOCK) | + SSP_PIN_SEL(1, SSP_DATA) | + SSP_PIN_SEL(2, SSP_CHIPSEL) | + SSP_PIN_SEL(3, SSP_IN) | + SSP_INPUT_SEL(3), + .pdata = &spi_master_data, + .pdata_sz = sizeof(spi_master_data), + }, }, }; @@ -217,6 +257,9 @@ static struct tnetv107x_device_info evm_device_info __initconst = { .ssp_config = &ssp_config, }; +static struct spi_board_info spi_info[] __initconst = { +}; + static __init void tnetv107x_evm_board_init(void) { davinci_cfg_reg_list(sdio1_pins); @@ -224,6 +267,8 @@ static __init void tnetv107x_evm_board_init(void) davinci_cfg_reg_list(ssp_pins); tnetv107x_devices_init(&evm_device_info); + + spi_register_board_info(spi_info, ARRAY_SIZE(spi_info)); } #ifdef CONFIG_SERIAL_8250_CONSOLE