[PATCH v3 0/5] ARM OMAP3530evm misc fixes

[PATCH v3 0/5] ARM OMAP3530evm misc fixes

[Zumeng Chen]

The series is based upon the latest linux-omap master branch from
Tony (3.5-rc2).

V3 Changes :

 1. [patch 5/5] Leave driver/input/touchscreen as-is. some changes
    on arch/arm/mach-omap2/common-board-devices.c, please see the
    shortlog for more information.
 2. For the first patch, I noticed GPMC driver conversion v5, so
    this is decided by Tony, we can drop it, and I'll create a new
    one if needed, but obviously I'm not very proper candidate for
    it.

 Thanks all comments :-)

Zumeng Chen (5):
      ARM: OMAP3EVM: Add NAND flash definition
      ARM: OMAP3EVM: Adding USB internal LDOs board file
      ARM: omap3evm: enable VBUS switch for EHCI tranceiver
      ARM: OMAP3EVM: cosmetic fixes for parent clk set
      ARM: OMAP3530evm: set pendown_state and debounce time for ads7846

 arch/arm/mach-omap2/board-omap3evm.c       |   74 +++++++++++++++++++++++++++-
 arch/arm/mach-omap2/common-board-devices.c |   18 ++++++-
 arch/arm/mach-omap2/common-board-devices.h |    1 +
 arch/arm/plat-omap/clock.c                 |    4 ++
 drivers/mfd/omap-usb-host.c                |    2 +-
 5 files changed, 95 insertions(+), 4 deletions(-)

[PATCH 1/5] ARM: OMAP3EVM: Add NAND flash definition

[Zumeng Chen]

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Tested-by: Zumeng Chen <zumeng.chen@windriver.com>
---
 arch/arm/mach-omap2/board-omap3evm.c |   39 ++++++++++++++++++++++++++++++++++
 1 files changed, 39 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 639bd07..0b83d0e 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -24,6 +24,10 @@
 #include <linux/leds.h>
 #include <linux/interrupt.h>
 
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/nand.h>
+
 #include <linux/spi/spi.h>
 #include <linux/spi/ads7846.h>
 #include <linux/i2c/twl.h>
@@ -43,6 +47,7 @@
 
 #include <plat/board.h>
 #include <plat/usb.h>
+#include <plat/nand.h>
 #include "common.h"
 #include <plat/mcspi.h>
 #include <video/omapdss.h>
@@ -607,6 +612,37 @@ static struct regulator_consumer_supply dummy_supplies[] = {
 	REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
 };
 
+static struct mtd_partition omap3evm_nand_partitions[] = {
+	/* All the partition sizes are listed in terms of NAND block size */
+	{
+		.name           = "X-Loader",
+		.offset         = 0,
+		.size           = 4*(SZ_128K),
+		.mask_flags     = MTD_WRITEABLE
+	},
+	{
+		.name           = "U-Boot",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           = 14*(SZ_128K),
+		.mask_flags     = MTD_WRITEABLE
+	},
+	{
+		.name           = "U-Boot Env",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           = 2*(SZ_128K)
+	},
+	{
+		.name           = "Kernel",
+		.offset         = MTDPART_OFS_APPEND,
+		.size           = 40*(SZ_128K)
+	},
+	{
+		.name           = "File system",
+		.size           = MTDPART_SIZ_FULL,
+		.offset         = MTDPART_OFS_APPEND,
+	},
+};
+
 static void __init omap3_evm_init(void)
 {
 	struct omap_board_mux *obm;
@@ -656,6 +692,9 @@ static void __init omap3_evm_init(void)
 	}
 	usb_musb_init(&musb_board_data);
 	usbhs_init(&usbhs_bdata);
+	omap_nand_flash_init(NAND_BUSWIDTH_16, omap3evm_nand_partitions,
+			     ARRAY_SIZE(omap3evm_nand_partitions));
+
 	omap_ads7846_init(1, OMAP3_EVM_TS_GPIO, 310, NULL);
 	omap3evm_init_smsc911x();
 	omap3_evm_display_init();
-- 
1.7.5.4

[PATCH 2/5] ARM: OMAP3EVM: Adding USB internal LDOs board file

[Zumeng Chen]

EHCI PHY requires these regulators:
        EVM Rev >=E  --> VAUX2
        EVM Rev < E  --> VUSB1V5, VUSB1V8

Adding USB internal LDOs (vusb1v5 & vusb1v8) and VAUX2 to omap3evm
board file. Also removing vaux2_{1/2/3} supplies as they are not
used on omap3 evm.

But we need not to add vaux2 in twl4030_platform_data since it will
be added conditionally.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Zumeng Chen <zumeng.chen@windriver.com>
---
 arch/arm/mach-omap2/board-omap3evm.c |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 0b83d0e..1bfbe42 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -466,6 +466,28 @@ struct wl12xx_platform_data omap3evm_wlan_data __initdata = {
 };
 #endif
 
+/* VAUX2 for USB */
+static struct regulator_consumer_supply omap3evm_vaux2_supplies[] = {
+	REGULATOR_SUPPLY("VDD_CSIPHY1", "omap3isp"),	/* OMAP ISP */
+	REGULATOR_SUPPLY("VDD_CSIPHY2", "omap3isp"),	/* OMAP ISP */
+	REGULATOR_SUPPLY("hsusb1", "ehci-omap.0"),
+	REGULATOR_SUPPLY("vaux2", NULL),
+};
+
+static struct regulator_init_data omap3evm_vaux2 = {
+	.constraints = {
+		.min_uV		= 2800000,
+		.max_uV		= 2800000,
+		.apply_uV	= true,
+		.valid_modes_mask	= REGULATOR_MODE_NORMAL
+					| REGULATOR_MODE_STANDBY,
+		.valid_ops_mask		= REGULATOR_CHANGE_MODE
+					| REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies		= ARRAY_SIZE(omap3evm_vaux2_supplies),
+	.consumer_supplies		= omap3evm_vaux2_supplies,
+};
+
 static struct twl4030_platform_data omap3evm_twldata = {
 	/* platform_data for children goes here */
 	.keypad		= &omap3evm_kp_data,
@@ -659,6 +681,9 @@ static void __init omap3_evm_init(void)
 	omap_mux_init_gpio(63, OMAP_PIN_INPUT);
 	omap_hsmmc_init(mmc);
 
+	if (get_omap3_evm_rev() >= OMAP3EVM_BOARD_GEN_2)
+		omap3evm_twldata.vaux2 = &omap3evm_vaux2;
+
 	omap3_evm_i2c_init();
 
 	omap_display_init(&omap3_evm_dss_data);
-- 
1.7.5.4

[PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver

[Zumeng Chen]

This was chosen by following the trace on the schematic from component U131
and U134 to the CPEN pin on the USB3320 device.

TWL4030.GPIO2-...->(T2_GPIO2_3V3)U131-..>nUSB2_EN-..>U134-..>EXP_nUSB2_1V8
which starts EHCI tranceiver USB3320.

This will set TWL4030.GPIO2 as output pin to drive EHCI tranceiver.

Signed-off-by: Zumeng Chen <zumeng.chen@windriver.com>
---
 arch/arm/mach-omap2/board-omap3evm.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 1bfbe42..02d8047 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -360,6 +360,15 @@ static int omap3evm_twl_gpio_setup(struct device *dev,
 
 	platform_device_register(&leds_gpio);
 
+	/* Enable VBUS switch by setting TWL4030.GPIO2DIR as output
+	 * for starting USB tranceiver
+	 */
+	if (get_omap3_evm_rev() >= OMAP3EVM_BOARD_GEN_2) {
+		u8 val;
+		twl_i2c_read_u8(TWL4030_MODULE_GPIO, &val, REG_GPIODATADIR1);
+		val |= 0x04; /* TWL4030.GPIO2DIR BIT at GPIODATADIR1(0x9B) */
+		twl_i2c_write_u8(TWL4030_MODULE_GPIO, val, REG_GPIODATADIR1);
+	}
 	return 0;
 }
 
-- 
1.7.5.4

[PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver

[Sergei Shtylyov]

Hello.

On 20-06-2012 13:14, Zumeng Chen wrote:

> This was chosen by following the trace on the schematic from component U131
> and U134 to the CPEN pin on the USB3320 device.

> TWL4030.GPIO2-...->(T2_GPIO2_3V3)U131-..>nUSB2_EN-..>U134-..>EXP_nUSB2_1V8
> which starts EHCI tranceiver USB3320.

> This will set TWL4030.GPIO2 as output pin to drive EHCI tranceiver.

> Signed-off-by: Zumeng Chen<zumeng.chen@windriver.com>
> ---
>   arch/arm/mach-omap2/board-omap3evm.c |    9 +++++++++
>   1 files changed, 9 insertions(+), 0 deletions(-)

> diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
> index 1bfbe42..02d8047 100644
> --- a/arch/arm/mach-omap2/board-omap3evm.c
> +++ b/arch/arm/mach-omap2/board-omap3evm.c
> @@ -360,6 +360,15 @@ static int omap3evm_twl_gpio_setup(struct device *dev,
>
>   	platform_device_register(&leds_gpio);
>
> +	/* Enable VBUS switch by setting TWL4030.GPIO2DIR as output
> +	 * for starting USB tranceiver
> +	 */
> +	if (get_omap3_evm_rev()>= OMAP3EVM_BOARD_GEN_2) {
> +		u8 val;

    Empty line after declaration block wouldn't hurt...

> +		twl_i2c_read_u8(TWL4030_MODULE_GPIO,&val, REG_GPIODATADIR1);
> +		val |= 0x04; /* TWL4030.GPIO2DIR BIT at GPIODATADIR1(0x9B) */
> +		twl_i2c_write_u8(TWL4030_MODULE_GPIO, val, REG_GPIODATADIR1);
> +	}
>   	return 0;
>   }

WBR, Sergei

[PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver

[Zumeng Chen]

? 2012?06?20? 20:05, Sergei Shtylyov ??:
> Hello.
>
> On 20-06-2012 13:14, Zumeng Chen wrote:
>
>> This was chosen by following the trace on the schematic from 
>> component U131
>> and U134 to the CPEN pin on the USB3320 device.
>
>> TWL4030.GPIO2-...->(T2_GPIO2_3V3)U131-..>nUSB2_EN-..>U134-..>EXP_nUSB2_1V8 
>>
>> which starts EHCI tranceiver USB3320.
>
>> This will set TWL4030.GPIO2 as output pin to drive EHCI tranceiver.
>
>> Signed-off-by: Zumeng Chen<zumeng.chen@windriver.com>
>> ---
>> arch/arm/mach-omap2/board-omap3evm.c | 9 +++++++++
>> 1 files changed, 9 insertions(+), 0 deletions(-)
>
>> diff --git a/arch/arm/mach-omap2/board-omap3evm.c 
>> b/arch/arm/mach-omap2/board-omap3evm.c
>> index 1bfbe42..02d8047 100644
>> --- a/arch/arm/mach-omap2/board-omap3evm.c
>> +++ b/arch/arm/mach-omap2/board-omap3evm.c
>> @@ -360,6 +360,15 @@ static int omap3evm_twl_gpio_setup(struct device 
>> *dev,
>>
>> platform_device_register(&leds_gpio);
>>
>> + /* Enable VBUS switch by setting TWL4030.GPIO2DIR as output
>> + * for starting USB tranceiver
>> + */
>> + if (get_omap3_evm_rev()>= OMAP3EVM_BOARD_GEN_2) {
>> + u8 val;
>
> Empty line after declaration block wouldn't hurt...
Yes, Agreed.

Regards,
Zumeng
>
>> + twl_i2c_read_u8(TWL4030_MODULE_GPIO,&val, REG_GPIODATADIR1);
>> + val |= 0x04; /* TWL4030.GPIO2DIR BIT at GPIODATADIR1(0x9B) */
>> + twl_i2c_write_u8(TWL4030_MODULE_GPIO, val, REG_GPIODATADIR1);
>> + }
>> return 0;
>> }
>
> WBR, Sergei

[PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver

[Tony Lindgren]

* Sergei Shtylyov <sshtylyov@mvista.com> [120620 05:10]:
> On 20-06-2012 13:14, Zumeng Chen wrote:
> >
> >This will set TWL4030.GPIO2 as output pin to drive EHCI tranceiver.
...

> >+	/* Enable VBUS switch by setting TWL4030.GPIO2DIR as output
> >+	 * for starting USB tranceiver
> >+	 */
> >+	if (get_omap3_evm_rev()>= OMAP3EVM_BOARD_GEN_2) {
> >+		u8 val;
> 
>    Empty line after declaration block wouldn't hurt...
> 

I'll apply these into devel-board branch with the extra line
added. Not taking the clock related patch 4/5 as that's something
Paul should queue.

Also note that the board-*.c files are being phased out with
devicetree support.

Regards,

Tony

[PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver

[Zumeng Chen]

? 2012?07?06? 16:41, Tony Lindgren ??:
> * Sergei Shtylyov<sshtylyov@mvista.com>  [120620 05:10]:
>> On 20-06-2012 13:14, Zumeng Chen wrote:
>>> This will set TWL4030.GPIO2 as output pin to drive EHCI tranceiver.
> ...
>
>>> +	/* Enable VBUS switch by setting TWL4030.GPIO2DIR as output
>>> +	 * for starting USB tranceiver
>>> +	 */
>>> +	if (get_omap3_evm_rev()>= OMAP3EVM_BOARD_GEN_2) {
>>> +		u8 val;
>>     Empty line after declaration block wouldn't hurt...
>>
> I'll apply these into devel-board branch with the extra line
> added. Not taking the clock related patch 4/5 as that's something
> Paul should queue.
>
> Also note that the board-*.c files are being phased out with
> devicetree support.
Thanks Tony for your comments, I understand all of them.

Regards,
Zumeng
>
> Regards,
>
> Tony

[PATCH 4/5] ARM: OMAP3EVM: cosmetic fixes for parent clk set

[Zumeng Chen]

Since it's no more sense to set parent for dummy clock,
so we can just ignore it to mute failed message.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Zumeng Chen <zumeng.chen@gmail.com>
---
 arch/arm/plat-omap/clock.c  |    4 ++++
 drivers/mfd/omap-usb-host.c |    2 +-
 2 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 62ec5c4..c7e26e4 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -149,6 +149,10 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
 	if (!arch_clock || !arch_clock->clk_set_parent)
 		return ret;
 
+	/* If the clock is a dummy clock just return */
+	if (clk == &dummy_ck)
+		return 0;
+
 	spin_lock_irqsave(&clockfw_lock, flags);
 	if (clk->usecount == 0) {
 		ret = arch_clock->clk_set_parent(clk, parent);
diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 7e96bb2..c9d27c4 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -699,7 +699,7 @@ static int __devinit usbhs_omap_probe(struct platform_device *pdev)
 	}
 
 	if (is_ehci_phy_mode(pdata->port_mode[0])) {
-		/* for OMAP3 , the clk set paretn fails */
+		/* for OMAP3 , the clk set parent fails */
 		ret = clk_set_parent(omap->utmi_p1_fck,
 					omap->xclk60mhsp1_ck);
 		if (ret != 0)
-- 
1.7.5.4

[PATCH 4/5] ARM: OMAP3EVM: cosmetic fixes for parent clk set

[Jon Hunter]

On 06/20/2012 04:14 AM, Zumeng Chen wrote:
> Since it's no more sense to set parent for dummy clock,
> so we can just ignore it to mute failed message.
> 
> Signed-off-by: Jon Hunter <jon-hunter@ti.com>
> Signed-off-by: Zumeng Chen <zumeng.chen@gmail.com>
> ---
>  arch/arm/plat-omap/clock.c  |    4 ++++
>  drivers/mfd/omap-usb-host.c |    2 +-
>  2 files changed, 5 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
> index 62ec5c4..c7e26e4 100644
> --- a/arch/arm/plat-omap/clock.c
> +++ b/arch/arm/plat-omap/clock.c
> @@ -149,6 +149,10 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
>  	if (!arch_clock || !arch_clock->clk_set_parent)
>  		return ret;
>  
> +	/* If the clock is a dummy clock just return */
> +	if (clk == &dummy_ck)
> +		return 0;
> +
>  	spin_lock_irqsave(&clockfw_lock, flags);
>  	if (clk->usecount == 0) {
>  		ret = arch_clock->clk_set_parent(clk, parent);
> diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
> index 7e96bb2..c9d27c4 100644
> --- a/drivers/mfd/omap-usb-host.c
> +++ b/drivers/mfd/omap-usb-host.c
> @@ -699,7 +699,7 @@ static int __devinit usbhs_omap_probe(struct platform_device *pdev)
>  	}
>  
>  	if (is_ehci_phy_mode(pdata->port_mode[0])) {
> -		/* for OMAP3 , the clk set paretn fails */
> +		/* for OMAP3 , the clk set parent fails */

Can't we remove this comment now with the above fix? It is no longer
relevant, right?

Cheers
Jon

[PATCH 4/5] ARM: OMAP3EVM: cosmetic fixes for parent clk set

[Zumeng Chen]

? 2012?06?21? 00:00, Jon Hunter ??:
> On 06/20/2012 04:14 AM, Zumeng Chen wrote:
>> Since it's no more sense to set parent for dummy clock,
>> so we can just ignore it to mute failed message.
>>
>> Signed-off-by: Jon Hunter<jon-hunter@ti.com>
>> Signed-off-by: Zumeng Chen<zumeng.chen@gmail.com>
>> ---
>>   arch/arm/plat-omap/clock.c  |    4 ++++
>>   drivers/mfd/omap-usb-host.c |    2 +-
>>   2 files changed, 5 insertions(+), 1 deletions(-)
>>
>> diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
>> index 62ec5c4..c7e26e4 100644
>> --- a/arch/arm/plat-omap/clock.c
>> +++ b/arch/arm/plat-omap/clock.c
>> @@ -149,6 +149,10 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
>>   	if (!arch_clock || !arch_clock->clk_set_parent)
>>   		return ret;
>>
>> +	/* If the clock is a dummy clock just return */
>> +	if (clk ==&dummy_ck)
>> +		return 0;
>> +
>>   	spin_lock_irqsave(&clockfw_lock, flags);
>>   	if (clk->usecount == 0) {
>>   		ret = arch_clock->clk_set_parent(clk, parent);
>> diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
>> index 7e96bb2..c9d27c4 100644
>> --- a/drivers/mfd/omap-usb-host.c
>> +++ b/drivers/mfd/omap-usb-host.c
>> @@ -699,7 +699,7 @@ static int __devinit usbhs_omap_probe(struct platform_device *pdev)
>>   	}
>>
>>   	if (is_ehci_phy_mode(pdata->port_mode[0])) {
>> -		/* for OMAP3 , the clk set paretn fails */
>> +		/* for OMAP3 , the clk set parent fails */
> Can't we remove this comment now with the above fix? It is no longer
> relevant, right?
Yes, NP.

Regards,
Zumeng
>
> Cheers
> Jon
> --
> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
> the body of a message to majordomo at vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

[PATCH 4/5] ARM: OMAP3EVM: cosmetic fixes for parent clk set

[Tony Lindgren]

* Zumeng Chen <zumeng.chen@windriver.com> [120620 02:19]:
> Since it's no more sense to set parent for dummy clock,
> so we can just ignore it to mute failed message.

This is something Paul should look at.

Regards,

Tony
 
> Signed-off-by: Jon Hunter <jon-hunter@ti.com>
> Signed-off-by: Zumeng Chen <zumeng.chen@gmail.com>
> ---
>  arch/arm/plat-omap/clock.c  |    4 ++++
>  drivers/mfd/omap-usb-host.c |    2 +-
>  2 files changed, 5 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
> index 62ec5c4..c7e26e4 100644
> --- a/arch/arm/plat-omap/clock.c
> +++ b/arch/arm/plat-omap/clock.c
> @@ -149,6 +149,10 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
>  	if (!arch_clock || !arch_clock->clk_set_parent)
>  		return ret;
>  
> +	/* If the clock is a dummy clock just return */
> +	if (clk == &dummy_ck)
> +		return 0;
> +
>  	spin_lock_irqsave(&clockfw_lock, flags);
>  	if (clk->usecount == 0) {
>  		ret = arch_clock->clk_set_parent(clk, parent);
> diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
> index 7e96bb2..c9d27c4 100644
> --- a/drivers/mfd/omap-usb-host.c
> +++ b/drivers/mfd/omap-usb-host.c
> @@ -699,7 +699,7 @@ static int __devinit usbhs_omap_probe(struct platform_device *pdev)
>  	}
>  
>  	if (is_ehci_phy_mode(pdata->port_mode[0])) {
> -		/* for OMAP3 , the clk set paretn fails */
> +		/* for OMAP3 , the clk set parent fails */
>  		ret = clk_set_parent(omap->utmi_p1_fck,
>  					omap->xclk60mhsp1_ck);
>  		if (ret != 0)
> -- 
> 1.7.5.4
> 

[PATCH 5/5] ARM: OMAP3530evm: set pendown_state and debounce time for ads7846

[Zumeng Chen]

Currently most ads7846 config definitions for OMAP3 series boards have
been moved to common-board-devices.c, and it is transparent for init.
And it's no very proper to do gpio_request based on get_pendown_state
since omap_ads7846_init knows everything about ads7846_config.

So it's more fit to request gpio according to the right gpio_pendown
and set debounce time conditionally. If we don't set proper debouce
time, there are flooded interrupt counters of ads7846 responding to
one time touch on screen, then the driver couldn't work very well.

This patch has been validated on 3530evm.

Signed-off-by: Zumeng Chen <zumeng.chen@windriver.com>
---
 arch/arm/mach-omap2/board-omap3evm.c       |    1 -
 arch/arm/mach-omap2/common-board-devices.c |   18 ++++++++++++++++--
 arch/arm/mach-omap2/common-board-devices.h |    1 +
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 02d8047..834cfc0 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -58,7 +58,6 @@
 #include "hsmmc.h"
 #include "common-board-devices.h"
 
-#define OMAP3_EVM_TS_GPIO	175
 #define OMAP3_EVM_EHCI_VBUS	22
 #define OMAP3_EVM_EHCI_SELECT	61
 
diff --git a/arch/arm/mach-omap2/common-board-devices.c b/arch/arm/mach-omap2/common-board-devices.c
index 1706ebc..4ba070e 100644
--- a/arch/arm/mach-omap2/common-board-devices.c
+++ b/arch/arm/mach-omap2/common-board-devices.c
@@ -35,6 +35,16 @@ static struct omap2_mcspi_device_config ads7846_mcspi_config = {
 	.turbo_mode	= 0,
 };
 
+/*
+ * ADS7846 driver maybe request a gpio according to the value
+ * of pdata->get_pendown_state, but we have done this. So set
+ * get_pendown_state to avoid twice gpio requesting.
+ */
+static int omap3_get_pendown_state(void)
+{
+	return !gpio_get_value(OMAP3_EVM_TS_GPIO);
+}
+
 static struct ads7846_platform_data ads7846_config = {
 	.x_max			= 0x0fff,
 	.y_max			= 0x0fff,
@@ -45,6 +55,7 @@ static struct ads7846_platform_data ads7846_config = {
 	.debounce_rep		= 1,
 	.gpio_pendown		= -EINVAL,
 	.keep_vref_on		= 1,
+	.get_pendown_state	= &omap3_get_pendown_state,
 };
 
 static struct spi_board_info ads7846_spi_board_info __initdata = {
@@ -63,14 +74,17 @@ void __init omap_ads7846_init(int bus_num, int gpio_pendown, int gpio_debounce,
 	struct spi_board_info *spi_bi = &ads7846_spi_board_info;
 	int err;
 
-	if (board_pdata && board_pdata->get_pendown_state) {
+	if (gpio_pendown) {
 		err = gpio_request_one(gpio_pendown, GPIOF_IN, "TSPenDown");
 		if (err) {
 			pr_err("Couldn't obtain gpio for TSPenDown: %d\n", err);
 			return;
 		}
-		gpio_export(gpio_pendown, 0);
 
+		/* TS GPIOPendown doesn't allow user to change the direction */
+		gpio_export(gpio_pendown, false);
+
+		/* Set proper debouce time for ads7846. */
 		if (gpio_debounce)
 			gpio_set_debounce(gpio_pendown, gpio_debounce);
 	}
diff --git a/arch/arm/mach-omap2/common-board-devices.h b/arch/arm/mach-omap2/common-board-devices.h
index a0b4a428..4c4ef6a 100644
--- a/arch/arm/mach-omap2/common-board-devices.h
+++ b/arch/arm/mach-omap2/common-board-devices.h
@@ -4,6 +4,7 @@
 #include "twl-common.h"
 
 #define NAND_BLOCK_SIZE	SZ_128K
+#define OMAP3_EVM_TS_GPIO	175
 
 struct mtd_partition;
 struct ads7846_platform_data;
-- 
1.7.5.4

[PATCH 0/5] OMAP3530evm misc fixes for linux-omap

[Zumeng Chen]

These patches fix misc problems when reflash ti-omap3530evm for
master branch on Linux-omap. Currently they have been tested on
3530evm but were not ack'ed.

Most of them are the leftovers from the great original developers
with my the latest updates for adapting to the current kernel, so
I add you directly into SOB(If not proper, please let me know).

The series is based upon the latest linux-omap master branch from
Tony (3.5-rc1).

Zumeng Chen (5):
      ARM: OMAP3EVM: Add NAND flash definition
      ARM: OMAP3EVM: Adding USB internal LDOs board file
      ARM: omap3evm: enable VBUS switch for EHCI tranceiver
      MFD: OMAP3EVM: USB: cosmetic fix to failed parent clk set
      Input: ads7846: set proper debounce time in driver level

 arch/arm/mach-omap2/board-omap3evm.c |   75 ++++++++++++++++++++++++++++++++++
 drivers/input/touchscreen/ads7846.c  |    2 +
 drivers/mfd/omap-usb-host.c          |    4 +-
 3 files changed, 80 insertions(+), 1 deletions(-)

[PATCH 3/5] ARM: omap3evm: enable VBUS switch for EHCI tranceiver

[Zumeng Chen]

TWL4030.GPIO2-...->(T2_GPIO2_3V3)U131-..>nUSB2_EN-..>U134-..>EXP_nUSB2_1V8
which starts EHCI tranceiver USB3320.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Zumeng Chen <zumeng.chen@gmail.com>
---
 arch/arm/mach-omap2/board-omap3evm.c |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-omap2/board-omap3evm.c b/arch/arm/mach-omap2/board-omap3evm.c
index 7e5e18f..3806f0e 100644
--- a/arch/arm/mach-omap2/board-omap3evm.c
+++ b/arch/arm/mach-omap2/board-omap3evm.c
@@ -360,6 +360,15 @@ static int omap3evm_twl_gpio_setup(struct device *dev,
 
 	platform_device_register(&leds_gpio);
 
+	/* Enable VBUS switch by setting TWL4030.GPIO2DIR as output
+	 * for starting USB tranceiver
+	 */
+	if (get_omap3_evm_rev() >= OMAP3EVM_BOARD_GEN_2) {
+		u8 val;
+		twl_i2c_read_u8(TWL4030_MODULE_GPIO, &val, REG_GPIODATADIR1);
+		val |= 0x04; /* TWL4030.GPIO2DIR BIT at GPIODATADIR1(0x9B) */
+		twl_i2c_write_u8(TWL4030_MODULE_GPIO, val, REG_GPIODATADIR1);
+	}
 	return 0;
 }
 
-- 
1.7.5.4