From patchwork Sat Jul 9 17:16:37 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Shawn Guo X-Patchwork-Id: 960042 Received: from lists.sourceforge.net (lists.sourceforge.net [216.34.181.88]) by demeter2.kernel.org (8.14.4/8.14.4) with ESMTP id p69HT2bH032737 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Sat, 9 Jul 2011 17:29:23 GMT Received: from localhost ([127.0.0.1] helo=sfs-ml-1.v29.ch3.sourceforge.com) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1QfbKt-0008Cl-HX; Sat, 09 Jul 2011 17:28:59 +0000 Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-1.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1QfbKr-0008CX-QK for spi-devel-general@lists.sourceforge.net; Sat, 09 Jul 2011 17:28:57 +0000 X-ACL-Warn: Received: from mail-iw0-f175.google.com ([209.85.214.175]) by sog-mx-1.v43.ch3.sourceforge.com with esmtps (TLSv1:RC4-SHA:128) (Exim 4.76) id 1QfbKr-0008K2-1x for spi-devel-general@lists.sourceforge.net; Sat, 09 Jul 2011 17:28:57 +0000 Received: by iwn4 with SMTP id 4so3564812iwn.34 for ; Sat, 09 Jul 2011 10:28:51 -0700 (PDT) Received: by 10.231.161.80 with SMTP id q16mr20961ibx.185.1310231153707; Sat, 09 Jul 2011 10:05:53 -0700 (PDT) Received: from localhost.localdomain ([114.216.146.213]) by mx.google.com with ESMTPS id y3sm1839319iba.4.2011.07.09.10.05.44 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 09 Jul 2011 10:05:53 -0700 (PDT) From: Shawn Guo To: spi-devel-general@lists.sourceforge.net Subject: [PATCH v2 3/7] spi/imx: do not use spi_imx2_3 to name SPI_IMX_VER_2_3 function and macro Date: Sun, 10 Jul 2011 01:16:37 +0800 Message-Id: <1310231801-18761-4-git-send-email-shawn.guo@linaro.org> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1310231801-18761-1-git-send-email-shawn.guo@linaro.org> References: <1310231801-18761-1-git-send-email-shawn.guo@linaro.org> MIME-Version: 1.0 X-Spam-Score: -0.0 (/) X-Spam-Report: Spam Filtering performed by mx.sourceforge.net. See http://spamassassin.org/tag/ for more details. -0.0 AWL AWL: From: address is in the auto white-list X-Headers-End: 1QfbKr-0008K2-1x Cc: patches@linaro.org, devicetree-discuss@lists.ozlabs.org, =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Shawn Guo , Sascha Hauer , linux-arm-kernel@lists.infradead.org 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: , Errors-To: spi-devel-general-bounces@lists.sourceforge.net X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter2.kernel.org [140.211.167.43]); Sat, 09 Jul 2011 17:29:24 +0000 (UTC) X-MIME-Autoconverted: from base64 to 8bit by demeter2.kernel.org id p69HT2bH032737 It's confusing to use spi_imx2_3 to name SPI_IMX_VER_2_3 function and macro, as it easily make people think of imx2 and imx3. It's better to use specific soc name just like what other SPI_IMX_VER do. For SPI_IMX_VER_2_3 case, it will be mx51. To distinguish it from CSPI on mx51, mx51_ecspi might be a good choice. Signed-off-by: Shawn Guo Cc: Uwe Kleine-König Cc: Sascha Hauer Cc: Grant Likely --- drivers/spi/spi-imx.c | 107 +++++++++++++++++++++++++------------------------ 1 files changed, 54 insertions(+), 53 deletions(-) diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index ad928b1..052959df 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -171,30 +171,30 @@ static unsigned int spi_imx_clkdiv_2(unsigned int fin, return 7; } -#define SPI_IMX2_3_CTRL 0x08 -#define SPI_IMX2_3_CTRL_ENABLE (1 << 0) -#define SPI_IMX2_3_CTRL_XCH (1 << 2) -#define SPI_IMX2_3_CTRL_MODE_MASK (0xf << 4) -#define SPI_IMX2_3_CTRL_POSTDIV_OFFSET 8 -#define SPI_IMX2_3_CTRL_PREDIV_OFFSET 12 -#define SPI_IMX2_3_CTRL_CS(cs) ((cs) << 18) -#define SPI_IMX2_3_CTRL_BL_OFFSET 20 - -#define SPI_IMX2_3_CONFIG 0x0c -#define SPI_IMX2_3_CONFIG_SCLKPHA(cs) (1 << ((cs) + 0)) -#define SPI_IMX2_3_CONFIG_SCLKPOL(cs) (1 << ((cs) + 4)) -#define SPI_IMX2_3_CONFIG_SBBCTRL(cs) (1 << ((cs) + 8)) -#define SPI_IMX2_3_CONFIG_SSBPOL(cs) (1 << ((cs) + 12)) - -#define SPI_IMX2_3_INT 0x10 -#define SPI_IMX2_3_INT_TEEN (1 << 0) -#define SPI_IMX2_3_INT_RREN (1 << 3) - -#define SPI_IMX2_3_STAT 0x18 -#define SPI_IMX2_3_STAT_RR (1 << 3) +#define MX51_ECSPI_CTRL 0x08 +#define MX51_ECSPI_CTRL_ENABLE (1 << 0) +#define MX51_ECSPI_CTRL_XCH (1 << 2) +#define MX51_ECSPI_CTRL_MODE_MASK (0xf << 4) +#define MX51_ECSPI_CTRL_POSTDIV_OFFSET 8 +#define MX51_ECSPI_CTRL_PREDIV_OFFSET 12 +#define MX51_ECSPI_CTRL_CS(cs) ((cs) << 18) +#define MX51_ECSPI_CTRL_BL_OFFSET 20 + +#define MX51_ECSPI_CONFIG 0x0c +#define MX51_ECSPI_CONFIG_SCLKPHA(cs) (1 << ((cs) + 0)) +#define MX51_ECSPI_CONFIG_SCLKPOL(cs) (1 << ((cs) + 4)) +#define MX51_ECSPI_CONFIG_SBBCTRL(cs) (1 << ((cs) + 8)) +#define MX51_ECSPI_CONFIG_SSBPOL(cs) (1 << ((cs) + 12)) + +#define MX51_ECSPI_INT 0x10 +#define MX51_ECSPI_INT_TEEN (1 << 0) +#define MX51_ECSPI_INT_RREN (1 << 3) + +#define MX51_ECSPI_STAT 0x18 +#define MX51_ECSPI_STAT_RR (1 << 3) /* MX51 eCSPI */ -static unsigned int spi_imx2_3_clkdiv(unsigned int fin, unsigned int fspi) +static unsigned int mx51_ecspi_clkdiv(unsigned int fin, unsigned int fspi) { /* * there are two 4-bit dividers, the pre-divider divides by @@ -222,36 +222,37 @@ static unsigned int spi_imx2_3_clkdiv(unsigned int fin, unsigned int fspi) pr_debug("%s: fin: %u, fspi: %u, post: %u, pre: %u\n", __func__, fin, fspi, post, pre); - return (pre << SPI_IMX2_3_CTRL_PREDIV_OFFSET) | - (post << SPI_IMX2_3_CTRL_POSTDIV_OFFSET); + return (pre << MX51_ECSPI_CTRL_PREDIV_OFFSET) | + (post << MX51_ECSPI_CTRL_POSTDIV_OFFSET); } -static void __maybe_unused spi_imx2_3_intctrl(struct spi_imx_data *spi_imx, int enable) +static void __maybe_unused +mx51_ecspi_intctrl(struct spi_imx_data *spi_imx, int enable) { unsigned val = 0; if (enable & MXC_INT_TE) - val |= SPI_IMX2_3_INT_TEEN; + val |= MX51_ECSPI_INT_TEEN; if (enable & MXC_INT_RR) - val |= SPI_IMX2_3_INT_RREN; + val |= MX51_ECSPI_INT_RREN; - writel(val, spi_imx->base + SPI_IMX2_3_INT); + writel(val, spi_imx->base + MX51_ECSPI_INT); } -static void __maybe_unused spi_imx2_3_trigger(struct spi_imx_data *spi_imx) +static void __maybe_unused mx51_ecspi_trigger(struct spi_imx_data *spi_imx) { u32 reg; - reg = readl(spi_imx->base + SPI_IMX2_3_CTRL); - reg |= SPI_IMX2_3_CTRL_XCH; - writel(reg, spi_imx->base + SPI_IMX2_3_CTRL); + reg = readl(spi_imx->base + MX51_ECSPI_CTRL); + reg |= MX51_ECSPI_CTRL_XCH; + writel(reg, spi_imx->base + MX51_ECSPI_CTRL); } -static int __maybe_unused spi_imx2_3_config(struct spi_imx_data *spi_imx, +static int __maybe_unused mx51_ecspi_config(struct spi_imx_data *spi_imx, struct spi_imx_config *config) { - u32 ctrl = SPI_IMX2_3_CTRL_ENABLE, cfg = 0; + u32 ctrl = MX51_ECSPI_CTRL_ENABLE, cfg = 0; /* * The hardware seems to have a race condition when changing modes. The @@ -260,42 +261,42 @@ static int __maybe_unused spi_imx2_3_config(struct spi_imx_data *spi_imx, * the same time. * So set master mode for all channels as we do not support slave mode. */ - ctrl |= SPI_IMX2_3_CTRL_MODE_MASK; + ctrl |= MX51_ECSPI_CTRL_MODE_MASK; /* set clock speed */ - ctrl |= spi_imx2_3_clkdiv(spi_imx->spi_clk, config->speed_hz); + ctrl |= mx51_ecspi_clkdiv(spi_imx->spi_clk, config->speed_hz); /* set chip select to use */ - ctrl |= SPI_IMX2_3_CTRL_CS(config->cs); + ctrl |= MX51_ECSPI_CTRL_CS(config->cs); - ctrl |= (config->bpw - 1) << SPI_IMX2_3_CTRL_BL_OFFSET; + ctrl |= (config->bpw - 1) << MX51_ECSPI_CTRL_BL_OFFSET; - cfg |= SPI_IMX2_3_CONFIG_SBBCTRL(config->cs); + cfg |= MX51_ECSPI_CONFIG_SBBCTRL(config->cs); if (config->mode & SPI_CPHA) - cfg |= SPI_IMX2_3_CONFIG_SCLKPHA(config->cs); + cfg |= MX51_ECSPI_CONFIG_SCLKPHA(config->cs); if (config->mode & SPI_CPOL) - cfg |= SPI_IMX2_3_CONFIG_SCLKPOL(config->cs); + cfg |= MX51_ECSPI_CONFIG_SCLKPOL(config->cs); if (config->mode & SPI_CS_HIGH) - cfg |= SPI_IMX2_3_CONFIG_SSBPOL(config->cs); + cfg |= MX51_ECSPI_CONFIG_SSBPOL(config->cs); - writel(ctrl, spi_imx->base + SPI_IMX2_3_CTRL); - writel(cfg, spi_imx->base + SPI_IMX2_3_CONFIG); + writel(ctrl, spi_imx->base + MX51_ECSPI_CTRL); + writel(cfg, spi_imx->base + MX51_ECSPI_CONFIG); return 0; } -static int __maybe_unused spi_imx2_3_rx_available(struct spi_imx_data *spi_imx) +static int __maybe_unused mx51_ecspi_rx_available(struct spi_imx_data *spi_imx) { - return readl(spi_imx->base + SPI_IMX2_3_STAT) & SPI_IMX2_3_STAT_RR; + return readl(spi_imx->base + MX51_ECSPI_STAT) & MX51_ECSPI_STAT_RR; } -static void __maybe_unused spi_imx2_3_reset(struct spi_imx_data *spi_imx) +static void __maybe_unused mx51_ecspi_reset(struct spi_imx_data *spi_imx) { /* drain receive buffer */ - while (spi_imx2_3_rx_available(spi_imx)) + while (mx51_ecspi_rx_available(spi_imx)) readl(spi_imx->base + MXC_CSPIRXDATA); } @@ -583,11 +584,11 @@ static struct spi_imx_devtype_data spi_imx_devtype_data[] = { #endif #ifdef CONFIG_SPI_IMX_VER_2_3 [SPI_IMX_VER_2_3] = { - .intctrl = spi_imx2_3_intctrl, - .config = spi_imx2_3_config, - .trigger = spi_imx2_3_trigger, - .rx_available = spi_imx2_3_rx_available, - .reset = spi_imx2_3_reset, + .intctrl = mx51_ecspi_intctrl, + .config = mx51_ecspi_config, + .trigger = mx51_ecspi_trigger, + .rx_available = mx51_ecspi_rx_available, + .reset = mx51_ecspi_reset, .fifosize = 64, }, #endif