Adding support for mxc_gpio driver for imx25 and fix names of registers in tx25
board.
Signed-off-by: Matthias Weisser <weiss...@arcor.de>
---
Changes in v2:
- New in patch set due to review of v1
arch/arm/include/asm/arch-mx25/imx-regs.h | 10 ++++++++--
board/karo/tx25/tx25.c | 26 +++++++++++++-------------
include/mxc_gpio.h | 5 +++++
3 files changed, 26 insertions(+), 15 deletions(-)
diff --git a/arch/arm/include/asm/arch-mx25/imx-regs.h
b/arch/arm/include/asm/arch-mx25/imx-regs.h
index 62ee4d5..2ccb445 100644
--- a/arch/arm/include/asm/arch-mx25/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx25/imx-regs.h
@@ -86,8 +86,8 @@ struct esdramc_regs {
/* GPIO registers */
struct gpio_regs {
- u32 dr; /* data */
- u32 dir; /* direction */
+ u32 gpio_dr; /* data */
+ u32 gpio_dir; /* direction */
u32 psr; /* pad satus */
u32 icr1; /* interrupt config 1 */
u32 icr2; /* interrupt config 2 */
@@ -357,4 +357,10 @@ struct aips_regs {
#define WSR_UNLOCK1 0x5555
#define WSR_UNLOCK2 0xAAAA
+/* Names used in GPIO driver */
+#define GPIO1_BASE_ADDR IMX_GPIO1_BASE
+#define GPIO2_BASE_ADDR IMX_GPIO2_BASE
+#define GPIO3_BASE_ADDR IMX_GPIO3_BASE
+#define GPIO4_BASE_ADDR IMX_GPIO4_BASE
+
#endif /* _IMX_REGS_H */
diff --git a/board/karo/tx25/tx25.c b/board/karo/tx25/tx25.c
index 269858c..4088374 100644
--- a/board/karo/tx25/tx25.c
+++ b/board/karo/tx25/tx25.c
@@ -70,18 +70,18 @@ void tx25_fec_init(void)
writel(0x0, &padctl->pad_d11);
/* drop PHY power and assert reset (low) */
- val = readl(&gpio4->dr) & ~((1 << 7) | (1 << 9));
- writel(val, &gpio4->dr);
- val = readl(&gpio4->dir) | (1 << 7) | (1 << 9);
- writel(val, &gpio4->dir);
+ val = readl(&gpio4->gpio_dr) & ~((1 << 7) | (1 << 9));
+ writel(val, &gpio4->gpio_dr);
+ val = readl(&gpio4->gpio_dir) | (1 << 7) | (1 << 9);
+ writel(val, &gpio4->gpio_dir);
mdelay(5);
debug("resetting phy\n");
/* turn on PHY power leaving reset asserted */
- val = readl(&gpio4->dr) | 1 << 9;
- writel(val, &gpio4->dr);
+ val = readl(&gpio4->gpio_dr) | 1 << 9;
+ writel(val, &gpio4->gpio_dr);
mdelay(10);
@@ -111,19 +111,19 @@ void tx25_fec_init(void)
/*
* set each to 1 and make each an output
*/
- val = readl(&gpio3->dr) | (1 << 10) | (1 << 11) | (1 << 12);
- writel(val, &gpio3->dr);
- val = readl(&gpio3->dir) | (1 << 10) | (1 << 11) | (1 << 12);
- writel(val, &gpio3->dir);
+ val = readl(&gpio3->gpio_dr) | (1 << 10) | (1 << 11) | (1 << 12);
+ writel(val, &gpio3->gpio_dr);
+ val = readl(&gpio3->gpio_dir) | (1 << 10) | (1 << 11) | (1 << 12);
+ writel(val, &gpio3->gpio_dir);
mdelay(22); /* this value came from RedBoot */
/*
* deassert PHY reset
*/
- val = readl(&gpio4->dr) | 1 << 7;
- writel(val, &gpio4->dr);
- writel(val, &gpio4->dr);
+ val = readl(&gpio4->gpio_dr) | 1 << 7;
+ writel(val, &gpio4->gpio_dr);
+ writel(val, &gpio4->gpio_dr);
mdelay(5);
diff --git a/include/mxc_gpio.h b/include/mxc_gpio.h
index 002ba61..f673dce 100644
--- a/include/mxc_gpio.h
+++ b/include/mxc_gpio.h
@@ -24,6 +24,11 @@
#ifndef __MXC_GPIO_H
#define __MXC_GPIO_H
+/* Converts a GPIO port number and the internal bit position
+ * to the GPIO number
+ */
+#define MXC_GPIO_PORT_TO_NUM(port, bit) (((port - 1) << 5) + (bit & 0x1f))
+
enum mxc_gpio_direction {
MXC_GPIO_DIRECTION_IN,
MXC_GPIO_DIRECTION_OUT,
--
1.7.0.4
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