From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WlFQN-0007vE-K2 for barebox@lists.infradead.org; Fri, 16 May 2014 10:31:36 +0000 From: Sascha Hauer Date: Fri, 16 May 2014 12:30:57 +0200 Message-Id: <1400236258-17924-10-git-send-email-s.hauer@pengutronix.de> In-Reply-To: <1400236258-17924-1-git-send-email-s.hauer@pengutronix.de> References: <1400236258-17924-1-git-send-email-s.hauer@pengutronix.de> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 10/11] ARM: i.MX: iim: make fuse blowing work on i.MX5 To: barebox@lists.infradead.org The i.MX5 iim has an additional bit in the CCM module which enables the supply. Add support for it. Signed-off-by: Sascha Hauer --- arch/arm/mach-imx/iim.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/arch/arm/mach-imx/iim.c b/arch/arm/mach-imx/iim.c index dba416a..e87f5bc 100644 --- a/arch/arm/mach-imx/iim.c +++ b/arch/arm/mach-imx/iim.c @@ -28,6 +28,9 @@ #include #include +#include +#include +#include #define DRIVERNAME "imx_iim" #define IIM_NUM_BANKS 8 @@ -49,6 +52,11 @@ struct iim_priv { struct iim_bank *bank[IIM_NUM_BANKS]; int write_enable; int sense_enable; + void (*supply)(int enable); +}; + +struct imx_iim_drvdata { + void (*supply)(int enable); }; static struct iim_priv *imx_iim; @@ -192,10 +200,14 @@ static ssize_t imx_iim_cdev_write(struct cdev *cdev, const void *buf, size_t cou { ulong size, i; struct iim_bank *bank = container_of(cdev, struct iim_bank, cdev); + struct iim_priv *iim = bank->iim; size = min((loff_t)count, 32 - offset); if (IS_ENABLED(CONFIG_IMX_IIM_FUSE_BLOW) && bank->iim->write_enable) { + if (iim->supply) + iim->supply(1); + for (i = 0; i < size; i++) { int ret; @@ -203,6 +215,10 @@ static ssize_t imx_iim_cdev_write(struct cdev *cdev, const void *buf, size_t cou if (ret < 0) return ret; } + + if (iim->supply) + iim->supply(0); + } else { for (i = 0; i < size; i++) ((u8 *)bank->bankbase)[(offset+i)*4] = ((u8 *)buf)[i]; @@ -291,12 +307,18 @@ static int imx_iim_probe(struct device_d *dev) { struct iim_priv *iim; int i, ret; + struct imx_iim_drvdata *drvdata = NULL; if (imx_iim) return -EBUSY; iim = xzalloc(sizeof(*iim)); + dev_get_drvdata(dev, (unsigned long *)&drvdata); + + if (drvdata && drvdata->supply) + iim->supply = drvdata->supply; + imx_iim = iim; strcpy(iim->dev.name, "iim"); @@ -328,9 +350,51 @@ static int imx_iim_probe(struct device_d *dev) return 0; } +static void imx5_iim_supply(void __iomem *ccm_base, int enable) +{ + uint32_t val; + + val = readl(ccm_base + MX5_CCM_CGPR); + + if (enable) + val |= 1 << 4; + else + val &= ~(1 << 4); + + writel(val, ccm_base + MX5_CCM_CGPR); +} + +static void imx51_iim_supply(int enable) +{ + imx5_iim_supply((void __iomem *)MX51_CCM_BASE_ADDR, enable); +} + +static void imx53_iim_supply(int enable) +{ + imx5_iim_supply((void __iomem *)MX53_CCM_BASE_ADDR, enable); +} + +static struct imx_iim_drvdata imx27_drvdata = { +}; + +static struct imx_iim_drvdata imx51_drvdata = { + .supply = imx51_iim_supply, +}; + +static struct imx_iim_drvdata imx53_drvdata = { + .supply = imx53_iim_supply, +}; + static __maybe_unused struct of_device_id imx_iim_dt_ids[] = { { + .compatible = "fsl,imx53-iim", + .data = (unsigned long)&imx53_drvdata, + }, { + .compatible = "fsl,imx51-iim", + .data = (unsigned long)&imx51_drvdata, + }, { .compatible = "fsl,imx27-iim", + .data = (unsigned long)&imx27_drvdata, }, { /* sentinel */ } -- 2.0.0.rc0 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox