From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 10/11] ARM: i.MX: iim: make fuse blowing work on i.MX5
Date: Fri, 16 May 2014 12:30:57 +0200 [thread overview]
Message-ID: <1400236258-17924-10-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1400236258-17924-1-git-send-email-s.hauer@pengutronix.de>
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 <s.hauer@pengutronix.de>
---
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 <io.h>
#include <mach/iim.h>
+#include <mach/imx51-regs.h>
+#include <mach/imx53-regs.h>
+#include <mach/clock-imx51_53.h>
#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
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next prev parent reply other threads:[~2014-05-16 10:31 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-16 10:30 [PATCH 01/11] ARM: i.MX: iim: Check result of dev_request_mem_region Sascha Hauer
2014-05-16 10:30 ` [PATCH 02/11] ARM: i.MX: iim: introduce private data struct Sascha Hauer
2014-05-16 10:30 ` [PATCH 03/11] ARM: i.MX: iim: Add namespace to functions Sascha Hauer
2014-05-16 10:30 ` [PATCH 04/11] ARM: i.MX: iim: register iim device Sascha Hauer
2014-05-16 10:30 ` [PATCH 05/11] ARM: i.MX: iim: pass private data struct to imx_iim_fuse_blow Sascha Hauer
2014-05-16 10:30 ` [PATCH 06/11] ARM: i.MX: iim: pass private data struct to imx_iim_fuse_sense Sascha Hauer
2014-05-16 10:30 ` [PATCH 07/11] ARM: i.MX: iim: use dev_* for messages Sascha Hauer
2014-05-16 10:30 ` [PATCH 08/11] ARM: i.MX: iim: move static variables into driver struct Sascha Hauer
2014-05-16 10:30 ` [PATCH 09/11] ARM: i.MX: iim: don't make detour over cdev API Sascha Hauer
2014-05-16 10:30 ` Sascha Hauer [this message]
2014-05-16 10:30 ` [PATCH 11/11] ARM: i.MX: iim: provide a MAC address convenience variable Sascha Hauer
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