Patchwork [U-Boot,v2] tx25: Use generic gpio_* calls

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Submitter Vikram Narayanan
Date June 12, 2012, 4:37 p.m.
Message ID <4FD77055.3080502@gmail.com>
Download mbox | patch
Permalink /patch/164447/
State Superseded
Headers show

Comments

Vikram Narayanan - June 12, 2012, 4:37 p.m.
Changes from v1:
Used appropriate gpio_* lib calls.

---
Instead of manipulating gpio registers directly, use the calls
from the gpio library.

Signed-off-by: Vikram Narayanan <vikram186@gmail.com>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: John Rigby <jcrigby@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
---
 board/karo/tx25/tx25.c |   25 +++++++++----------------
 1 files changed, 9 insertions(+), 16 deletions(-)
Fabio Estevam - June 12, 2012, 4:58 p.m.
On Tue, Jun 12, 2012 at 1:37 PM, Vikram Narayanan <vikram186@gmail.com> wrote:
> Changes from v1:
> Used appropriate gpio_* lib calls.

This should go below the --- line

>
> ---
> Instead of manipulating gpio registers directly, use the calls
> from the gpio library.

,and this should go above the --- line

Otherwise, patch looks good. I don't have a tx25 board to test it.

Hopefully John can give it a try.
Stefano Babic - June 13, 2012, 7:52 a.m.
On 12/06/2012 18:37, Vikram Narayanan wrote:
> Changes from v1:
> Used appropriate gpio_* lib calls.
> 
> ---
> Instead of manipulating gpio registers directly, use the calls
> from the gpio library.

Changelog must go after the "---" line and commit message before. They
are swapped. Apart of that..

> 
> Signed-off-by: Vikram Narayanan <vikram186@gmail.com>
> Cc: Fabio Estevam <fabio.estevam@freescale.com>
> Cc: John Rigby <jcrigby@gmail.com>
> Cc: Stefano Babic <sbabic@denx.de>
> ---
>  board/karo/tx25/tx25.c |   25 +++++++++----------------
>  1 files changed, 9 insertions(+), 16 deletions(-)
> 
> diff --git a/board/karo/tx25/tx25.c b/board/karo/tx25/tx25.c
> index 2a29943..ff2de38 100644
> --- a/board/karo/tx25/tx25.c
> +++ b/board/karo/tx25/tx25.c
> @@ -34,14 +34,13 @@
>  DECLARE_GLOBAL_DATA_PTR;
>  
>  #ifdef CONFIG_FEC_MXC
> +#define GPIO_FEC_RESET_B	MXC_GPIO_PORT_TO_NUM(4, 7)
> +#define GPIO_FEC_ENABLE_B	MXC_GPIO_PORT_TO_NUM(4, 9)
>  void tx25_fec_init(void)
>  {
>  	struct iomuxc_mux_ctl *muxctl;
>  	struct iomuxc_pad_ctl *padctl;
> -	u32 val;
>  	u32 gpio_mux_mode = MX25_PIN_MUX_MODE(5);
> -	struct gpio_regs *gpio4 = (struct gpio_regs *)IMX_GPIO4_BASE;
> -	struct gpio_regs *gpio3 = (struct gpio_regs *)IMX_GPIO3_BASE;
>  	u32 saved_rdata0_mode, saved_rdata1_mode, saved_rx_dv_mode;
>  
>  	debug("tx25_fec_init\n");
> @@ -66,18 +65,15 @@ void tx25_fec_init(void)
>  	writel(0x0, &padctl->pad_d11);
>  
>  	/* drop PHY power and assert reset (low) */
> -	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);
> +	gpio_direction_output(GPIO_FEC_RESET_B, 0);
> +	gpio_direction_output(GPIO_FEC_ENABLE_B, 0);
>  
>  	mdelay(5);
>  
>  	debug("resetting phy\n");
>  
>  	/* turn on PHY power leaving reset asserted */
> -	val = readl(&gpio4->gpio_dr) | 1 << 9;
> -	writel(val, &gpio4->gpio_dr);
> +	gpio_direction_output(GPIO_FEC_ENABLE_B, 1);
>  
>  	mdelay(10);
>  
> @@ -107,19 +103,16 @@ void tx25_fec_init(void)
>  	/*
>  	 * set each to 1 and make each an output
>  	 */
> -	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);
> +	gpio_direction_output(MXC_GPIO_PORT_TO_NUM(3, 10), 1);
> +	gpio_direction_output(MXC_GPIO_PORT_TO_NUM(3, 11), 1);
> +	gpio_direction_output(MXC_GPIO_PORT_TO_NUM(3, 12), 1);
>  
>  	mdelay(22);		/* this value came from RedBoot */
>  
>  	/*
>  	 * deassert PHY reset
>  	 */
> -	val = readl(&gpio4->gpio_dr) | 1 << 7;
> -	writel(val, &gpio4->gpio_dr);
> -	writel(val, &gpio4->gpio_dr);
> +	gpio_set_value(GPIO_FEC_RESET_B, 1);
>  
>  	mdelay(5);
>  

Acked-by: Stefano Babic <sbabic@denx.de>

Best regards,
Stefano Babic
Vikram Narayanan - June 13, 2012, 4:34 p.m.
On 6/13/2012 1:22 PM, Stefano Babic wrote:
> On 12/06/2012 18:37, Vikram Narayanan wrote:
>> Changes from v1:
>> Used appropriate gpio_* lib calls.
>>
>> ---
>> Instead of manipulating gpio registers directly, use the calls
>> from the gpio library.
>
> Changelog must go after the "---" line and commit message before. They
> are swapped. Apart of that..

Sorry for the mix up of commit message and the change log.
Will send a v3 for this.

BTW, did someone test this on tx25?
@John: Any comments from your side?

Thanks,
Vikram

Patch

diff --git a/board/karo/tx25/tx25.c b/board/karo/tx25/tx25.c
index 2a29943..ff2de38 100644
--- a/board/karo/tx25/tx25.c
+++ b/board/karo/tx25/tx25.c
@@ -34,14 +34,13 @@ 
 DECLARE_GLOBAL_DATA_PTR;
 
 #ifdef CONFIG_FEC_MXC
+#define GPIO_FEC_RESET_B	MXC_GPIO_PORT_TO_NUM(4, 7)
+#define GPIO_FEC_ENABLE_B	MXC_GPIO_PORT_TO_NUM(4, 9)
 void tx25_fec_init(void)
 {
 	struct iomuxc_mux_ctl *muxctl;
 	struct iomuxc_pad_ctl *padctl;
-	u32 val;
 	u32 gpio_mux_mode = MX25_PIN_MUX_MODE(5);
-	struct gpio_regs *gpio4 = (struct gpio_regs *)IMX_GPIO4_BASE;
-	struct gpio_regs *gpio3 = (struct gpio_regs *)IMX_GPIO3_BASE;
 	u32 saved_rdata0_mode, saved_rdata1_mode, saved_rx_dv_mode;
 
 	debug("tx25_fec_init\n");
@@ -66,18 +65,15 @@  void tx25_fec_init(void)
 	writel(0x0, &padctl->pad_d11);
 
 	/* drop PHY power and assert reset (low) */
-	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);
+	gpio_direction_output(GPIO_FEC_RESET_B, 0);
+	gpio_direction_output(GPIO_FEC_ENABLE_B, 0);
 
 	mdelay(5);
 
 	debug("resetting phy\n");
 
 	/* turn on PHY power leaving reset asserted */
-	val = readl(&gpio4->gpio_dr) | 1 << 9;
-	writel(val, &gpio4->gpio_dr);
+	gpio_direction_output(GPIO_FEC_ENABLE_B, 1);
 
 	mdelay(10);
 
@@ -107,19 +103,16 @@  void tx25_fec_init(void)
 	/*
 	 * set each to 1 and make each an output
 	 */
-	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);
+	gpio_direction_output(MXC_GPIO_PORT_TO_NUM(3, 10), 1);
+	gpio_direction_output(MXC_GPIO_PORT_TO_NUM(3, 11), 1);
+	gpio_direction_output(MXC_GPIO_PORT_TO_NUM(3, 12), 1);
 
 	mdelay(22);		/* this value came from RedBoot */
 
 	/*
 	 * deassert PHY reset
 	 */
-	val = readl(&gpio4->gpio_dr) | 1 << 7;
-	writel(val, &gpio4->gpio_dr);
-	writel(val, &gpio4->gpio_dr);
+	gpio_set_value(GPIO_FEC_RESET_B, 1);
 
 	mdelay(5);