From patchwork Mon Oct 18 19:25:15 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Cyril Chemparathy X-Patchwork-Id: 262991 Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id o9IJPeUV030737 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 18 Oct 2010 19:26:01 GMT Received: from localhost ([127.0.0.1] helo=sfs-ml-3.v29.ch3.sourceforge.com) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1P7vL1-0008Lu-FQ; Mon, 18 Oct 2010 19:25:39 +0000 Received: from sog-mx-3.v43.ch3.sourceforge.com ([172.29.43.193] helo=mx.sourceforge.net) by sfs-ml-3.v29.ch3.sourceforge.com with esmtp (Exim 4.69) (envelope-from ) id 1P7vKy-0008LZ-Cc for spi-devel-general@lists.sourceforge.net; Mon, 18 Oct 2010 19:25:36 +0000 Received-SPF: pass (sog-mx-3.v43.ch3.sourceforge.com: domain of ti.com designates 192.94.94.41 as permitted sender) client-ip=192.94.94.41; envelope-from=cyril@ti.com; helo=bear.ext.ti.com; Received: from bear.ext.ti.com ([192.94.94.41]) by sog-mx-3.v43.ch3.sourceforge.com with esmtps (TLSv1:AES256-SHA:256) (Exim 4.69) id 1P7vKw-0006MS-3t for spi-devel-general@lists.sourceforge.net; Mon, 18 Oct 2010 19:25:36 +0000 Received: from dlep33.itg.ti.com ([157.170.170.112]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id o9IJPSqj013568 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 18 Oct 2010 14:25:28 -0500 Received: from legion.dal.design.ti.com (localhost [127.0.0.1]) by dlep33.itg.ti.com (8.13.7/8.13.7) with ESMTP id o9IJPQOp003459; Mon, 18 Oct 2010 14:25:27 -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 o9IJPPf27799; Mon, 18 Oct 2010 14:25:25 -0500 (CDT) Received: by gtrgwdeb (Postfix, from userid 39959) id AFD1C1E0593; Mon, 18 Oct 2010 15:25:24 -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 Subject: [PATCH v2 05/12] davinci: add spi devices on tnetv107x evm Date: Mon, 18 Oct 2010 15:25:15 -0400 Message-Id: <1287429922-18870-6-git-send-email-cyril@ti.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1287429922-18870-1-git-send-email-cyril@ti.com> References: <1287429922-18870-1-git-send-email-cyril@ti.com> X-Spam-Score: -0.7 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -1.5 SPF_CHECK_PASS SPF reports sender host as permitted sender for sender-domain -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record 0.8 AWL AWL: From: address is in the auto white-list X-Headers-End: 1P7vKw-0006MS-3t Cc: Cyril Chemparathy X-BeenThere: spi-devel-general@lists.sourceforge.net X-Mailman-Version: 2.1.9 Precedence: list List-Id: Linux SPI core/device drivers discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: spi-devel-general-bounces@lists.sourceforge.net X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Mon, 18 Oct 2010 19:26:01 +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