[PATCH v2 2/6] ARM: pxa168: added keypad support

Previous thread: Re: [Bug 17752] 2.6.36-rc3: inconsistent lock state (iprune_sem, shrink_icache_memory) by Stefan Richter on Friday, September 3, 2010 - 2:34 pm. (1 message)

Next thread: [ANNOUNCE] Git 1.7.2.3 by Junio C Hamano on Friday, September 3, 2010 - 3:07 pm. (1 message)
From: Mark F. Brown
Date: Thursday, August 26, 2010 - 8:27 am

Version 1
1) Make pxa27x_keypad.h accessible to mach-mmp
2) Add a wakeup handler for pxa27x_keypad interrupts
The wakeup callback fixes an issue on the pxa168 that prevents the keypad
driver from being able to clear the keypad interrupt after reading KPC_PC
3) Add initial board level support

Version 2
1) Clean up for wakeup handler moved from pxa168-irq to pxa27x_keypad
2) Reduced the number of rows to 5 for Aspenite

Mark F. Brown (6):
  ARM: pxa27x/pxa3xx: moved pxa27x_keypad.h to platform pxa directory
  ARM: pxa168: added keypad support
  ARM: pxa168: added wake clear register support for APMU
  ARM: pxa27x_keypad: added wakeup event handler for keypad interrupts
  ARM: pxa168: added keypad wake clear event support for platform
  ARM: pxa168: aspenite: add board support for keypad

 arch/arm/mach-mmp/aspenite.c                       |   27 ++++++++++++++++++++
 arch/arm/mach-mmp/include/mach/mfp-pxa168.h        |    7 +++++
 arch/arm/mach-mmp/include/mach/pxa168.h            |   12 +++++++++
 arch/arm/mach-mmp/include/mach/regs-apmu.h         |   12 +++++++++
 arch/arm/mach-mmp/pxa168.c                         |   13 +++++++++
 arch/arm/mach-pxa/devices.c                        |    2 +-
 arch/arm/mach-pxa/em-x270.c                        |    2 +-
 arch/arm/mach-pxa/ezx.c                            |    2 +-
 arch/arm/mach-pxa/littleton.c                      |    2 +-
 arch/arm/mach-pxa/mainstone.c                      |    4 +-
 arch/arm/mach-pxa/mioa701.c                        |    2 +-
 arch/arm/mach-pxa/palmld.c                         |    2 +-
 arch/arm/mach-pxa/palmt5.c                         |    2 +-
 arch/arm/mach-pxa/palmtreo.c                       |    2 +-
 arch/arm/mach-pxa/palmtx.c                         |    2 +-
 arch/arm/mach-pxa/palmz72.c                        |    2 +-
 arch/arm/mach-pxa/tavorevb.c                       |    2 +-
 arch/arm/mach-pxa/z2.c                             |    2 +-
 arch/arm/mach-pxa/zylonite.c                       ...
From: Mark F. Brown
Date: Thursday, August 26, 2010 - 8:27 am

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
---
 arch/arm/mach-mmp/include/mach/mfp-pxa168.h |    7 +++++++
 arch/arm/mach-mmp/include/mach/pxa168.h     |    7 +++++++
 arch/arm/mach-mmp/pxa168.c                  |    3 +++
 drivers/input/keyboard/Kconfig              |    2 +-
 4 files changed, 18 insertions(+), 1 deletions(-)

diff --git a/arch/arm/mach-mmp/include/mach/mfp-pxa168.h b/arch/arm/mach-mmp/include/mach/mfp-pxa168.h
index ded43c4..4621067 100644
--- a/arch/arm/mach-mmp/include/mach/mfp-pxa168.h
+++ b/arch/arm/mach-mmp/include/mach/mfp-pxa168.h
@@ -289,4 +289,11 @@
 #define GPIO86_PWM1_OUT		MFP_CFG(GPIO86, AF2)
 #define GPIO86_PWM2_OUT		MFP_CFG(GPIO86, AF3)
 
+/* Keypad */
+#define GPIO109_KP_MKIN1        MFP_CFG(GPIO109, AF7)
+#define GPIO110_KP_MKIN0        MFP_CFG(GPIO110, AF7)
+#define GPIO111_KP_MKOUT7       MFP_CFG(GPIO111, AF7)
+#define GPIO112_KP_MKOUT6       MFP_CFG(GPIO112, AF7)
+#define GPIO121_KP_MKIN4        MFP_CFG(GPIO121, AF7)
+
 #endif /* __ASM_MACH_MFP_PXA168_H */
diff --git a/arch/arm/mach-mmp/include/mach/pxa168.h b/arch/arm/mach-mmp/include/mach/pxa168.h
index 220738f..f34e663 100644
--- a/arch/arm/mach-mmp/include/mach/pxa168.h
+++ b/arch/arm/mach-mmp/include/mach/pxa168.h
@@ -11,6 +11,7 @@ extern void __init pxa168_init_irq(void);
 #include <plat/i2c.h>
 #include <plat/pxa3xx_nand.h>
 #include <video/pxa168fb.h>
+#include <plat/pxa27x_keypad.h>
 
 extern struct pxa_device_desc pxa168_device_uart1;
 extern struct pxa_device_desc pxa168_device_uart2;
@@ -27,6 +28,7 @@ extern struct pxa_device_desc pxa168_device_ssp4;
 extern struct pxa_device_desc pxa168_device_ssp5;
 extern struct pxa_device_desc pxa168_device_nand;
 extern struct pxa_device_desc pxa168_device_fb;
+extern struct pxa_device_desc pxa168_device_keypad;
 
 static inline int pxa168_add_uart(int id)
 {
@@ -105,4 +107,9 @@ static inline int pxa168_add_fb(struct pxa168fb_mach_info *mi)
 	return pxa_register_device(&pxa168_device_fb, mi, sizeof(*mi));
 }
 ...
From: Mark F. Brown
Date: Thursday, August 26, 2010 - 8:27 am

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
---
 arch/arm/mach-mmp/include/mach/pxa168.h |    5 +++++
 arch/arm/mach-mmp/pxa168.c              |   10 ++++++++++
 2 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-mmp/include/mach/pxa168.h b/arch/arm/mach-mmp/include/mach/pxa168.h
index f34e663..1801e42 100644
--- a/arch/arm/mach-mmp/include/mach/pxa168.h
+++ b/arch/arm/mach-mmp/include/mach/pxa168.h
@@ -5,6 +5,7 @@ struct sys_timer;
 
 extern struct sys_timer pxa168_timer;
 extern void __init pxa168_init_irq(void);
+extern void pxa168_clear_keypad_wakeup(void);
 
 #include <linux/i2c.h>
 #include <mach/devices.h>
@@ -12,6 +13,7 @@ extern void __init pxa168_init_irq(void);
 #include <plat/pxa3xx_nand.h>
 #include <video/pxa168fb.h>
 #include <plat/pxa27x_keypad.h>
+#include <mach/cputype.h>
 
 extern struct pxa_device_desc pxa168_device_uart1;
 extern struct pxa_device_desc pxa168_device_uart2;
@@ -109,6 +111,9 @@ static inline int pxa168_add_fb(struct pxa168fb_mach_info *mi)
 
 static inline int pxa168_add_keypad(struct pxa27x_keypad_platform_data *data)
 {
+	if (cpu_is_pxa168())
+		data->clear_wakeup_event = pxa168_clear_keypad_wakeup;
+
 	return pxa_register_device(&pxa168_device_keypad, data, sizeof(*data));
 }
 
diff --git a/arch/arm/mach-mmp/pxa168.c b/arch/arm/mach-mmp/pxa168.c
index 2fa16fb..72b4e76 100644
--- a/arch/arm/mach-mmp/pxa168.c
+++ b/arch/arm/mach-mmp/pxa168.c
@@ -136,6 +136,16 @@ struct sys_timer pxa168_timer = {
 	.init	= pxa168_timer_init,
 };
 
+void pxa168_clear_keypad_wakeup(void)
+{
+	uint32_t val;
+	uint32_t mask = APMU_PXA168_KP_WAKE_CLR;
+
+	/* wake event clear is needed in order to clear keypad interrupt */
+	val = __raw_readl(APMU_WAKE_CLR);
+	__raw_writel(val |  mask, APMU_WAKE_CLR);
+}
+
 /* on-chip devices */
 PXA168_DEVICE(uart1, "pxa2xx-uart", 0, UART1, 0xd4017000, 0x30, 21, 22);
 PXA168_DEVICE(uart2, "pxa2xx-uart", 1, UART2, 0xd4018000, 0x30, 23, 24);
-- 
1.7.0.4

--

From: Mark F. Brown
Date: Thursday, August 26, 2010 - 8:27 am

mach-mmp needs to clear wake event in order to clear the keypad interrupt

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
---
 arch/arm/plat-pxa/include/plat/pxa27x_keypad.h |    1 +
 drivers/input/keyboard/pxa27x_keypad.c         |   10 ++++++++++
 2 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/arch/arm/plat-pxa/include/plat/pxa27x_keypad.h b/arch/arm/plat-pxa/include/plat/pxa27x_keypad.h
index 7b4eadc..73dacda 100644
--- a/arch/arm/plat-pxa/include/plat/pxa27x_keypad.h
+++ b/arch/arm/plat-pxa/include/plat/pxa27x_keypad.h
@@ -52,6 +52,7 @@ struct pxa27x_keypad_platform_data {
 
 	/* key debounce interval */
 	unsigned int	debounce_interval;
+	void		(*clear_wakeup_event)(void);
 };
 
 extern void pxa_set_keypad_info(struct pxa27x_keypad_platform_data *info);
diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c
index 0610d10..b36d2be 100644
--- a/drivers/input/keyboard/pxa27x_keypad.c
+++ b/drivers/input/keyboard/pxa27x_keypad.c
@@ -330,11 +330,21 @@ static void pxa27x_keypad_scan_direct(struct pxa27x_keypad *keypad)
 	keypad->direct_key_state = new_state;
 }
 
+static void clear_wakeup_event(struct pxa27x_keypad *keypad)
+{
+	struct pxa27x_keypad_platform_data *pdata = keypad->pdata;
+
+	if (pdata->clear_wakeup_event)
+		(pdata->clear_wakeup_event)();
+}
+
 static irqreturn_t pxa27x_keypad_irq_handler(int irq, void *dev_id)
 {
 	struct pxa27x_keypad *keypad = dev_id;
 	unsigned long kpc = keypad_readl(KPC);
 
+	clear_wakeup_event(keypad);
+
 	if (kpc & KPC_DI)
 		pxa27x_keypad_scan_direct(keypad);
 
-- 
1.7.0.4

--

From: Mark F. Brown
Date: Thursday, August 26, 2010 - 8:27 am

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
---
 arch/arm/mach-mmp/include/mach/regs-apmu.h |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-mmp/include/mach/regs-apmu.h b/arch/arm/mach-mmp/include/mach/regs-apmu.h
index 9190305..ac47023 100644
--- a/arch/arm/mach-mmp/include/mach/regs-apmu.h
+++ b/arch/arm/mach-mmp/include/mach/regs-apmu.h
@@ -33,4 +33,16 @@
 #define APMU_FNRST_DIS	(1 << 1)
 #define APMU_AXIRST_DIS	(1 << 0)
 
+/* Wake Clear Register */
+#define APMU_WAKE_CLR	APMU_REG(0x07c)
+
+#define APMU_PXA168_KP_WAKE_CLR		(1 << 7)
+#define APMU_PXA168_CFI_WAKE_CLR	(1 << 6)
+#define APMU_PXA168_XD_WAKE_CLR		(1 << 5)
+#define APMU_PXA168_MSP_WAKE_CLR	(1 << 4)
+#define APMU_PXA168_SD4_WAKE_CLR	(1 << 3)
+#define APMU_PXA168_SD3_WAKE_CLR	(1 << 2)
+#define APMU_PXA168_SD2_WAKE_CLR	(1 << 1)
+#define APMU_PXA168_SD1_WAKE_CLR	(1 << 0)
+
 #endif /* __ASM_MACH_REGS_APMU_H */
-- 
1.7.0.4

--

From: Mark F. Brown
Date: Thursday, August 26, 2010 - 8:27 am

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
---
 arch/arm/mach-mmp/aspenite.c |   27 +++++++++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-mmp/aspenite.c b/arch/arm/mach-mmp/aspenite.c
index 9e1bd6b..f04bae6 100644
--- a/arch/arm/mach-mmp/aspenite.c
+++ b/arch/arm/mach-mmp/aspenite.c
@@ -24,6 +24,8 @@
 #include <mach/pxa168.h>
 #include <mach/gpio.h>
 #include <video/pxa168fb.h>
+#include <linux/input.h>
+#include <plat/pxa27x_keypad.h>
 
 #include "common.h"
 
@@ -97,6 +99,13 @@ static unsigned long common_pin_config[] __initdata = {
 	GPIO81_LCD_DD21,
 	GPIO82_LCD_DD22,
 	GPIO83_LCD_DD23,
+
+	/* Keypad */
+	GPIO109_KP_MKIN1,
+	GPIO110_KP_MKIN0,
+	GPIO111_KP_MKOUT7,
+	GPIO112_KP_MKOUT6,
+	GPIO121_KP_MKIN4,
 };
 
 static struct smc91x_platdata smc91x_info = {
@@ -193,6 +202,23 @@ struct pxa168fb_mach_info aspenite_lcd_info = {
 	.invert_pixclock	= 0,
 };
 
+static unsigned int aspenite_matrix_key_map[] = {
+	KEY(0, 6, KEY_UP),	/* SW 4 */
+	KEY(0, 7, KEY_DOWN),	/* SW 5 */
+	KEY(1, 6, KEY_LEFT),	/* SW 6 */
+	KEY(1, 7, KEY_RIGHT),	/* SW 7 */
+	KEY(4, 6, KEY_ENTER),	/* SW 8 */
+	KEY(4, 7, KEY_ESC),	/* SW 9 */
+};
+
+static struct pxa27x_keypad_platform_data aspenite_keypad_info __initdata = {
+	.matrix_key_rows	= 5,
+	.matrix_key_cols	= 8,
+	.matrix_key_map		= aspenite_matrix_key_map,
+	.matrix_key_map_size	= ARRAY_SIZE(aspenite_matrix_key_map),
+	.debounce_interval	= 30,
+};
+
 static void __init common_init(void)
 {
 	mfp_config(ARRAY_AND_SIZE(common_pin_config));
@@ -203,6 +229,7 @@ static void __init common_init(void)
 	pxa168_add_ssp(1);
 	pxa168_add_nand(&aspenite_nand_info);
 	pxa168_add_fb(&aspenite_lcd_info);
+	pxa168_add_keypad(&aspenite_keypad_info);
 
 	/* off-chip devices */
 	platform_device_register(&smc91x_device);
-- 
1.7.0.4

--

From: Marek Vasut
Date: Friday, September 3, 2010 - 7:12 pm

From: Mark F. Brown
Date: Friday, September 3, 2010 - 7:56 pm

Sorry I am new to this! If I am updating the patchset based on
community recommendations should I consider that the next version of
the patchset or something else? I think I am confused about the
distinction.

Thanks,
-- Mark
-- Mark
--

From: Marek Vasut
Date: Friday, September 3, 2010 - 10:23 pm

Stick the description of the changes made from previous version to where 
diffstat is.

Also, mark "vN+1" only those patches, that are really changed in the patchset. 
--

From: Mark F. Brown
Date: Thursday, August 26, 2010 - 8:27 am

mach-mmp utilizes pxa27x_keypad code so we need to move header to
platform pxa directory.

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
---
 arch/arm/mach-pxa/devices.c                        |    2 +-
 arch/arm/mach-pxa/em-x270.c                        |    2 +-
 arch/arm/mach-pxa/ezx.c                            |    2 +-
 arch/arm/mach-pxa/littleton.c                      |    2 +-
 arch/arm/mach-pxa/mainstone.c                      |    4 ++--
 arch/arm/mach-pxa/mioa701.c                        |    2 +-
 arch/arm/mach-pxa/palmld.c                         |    2 +-
 arch/arm/mach-pxa/palmt5.c                         |    2 +-
 arch/arm/mach-pxa/palmtreo.c                       |    2 +-
 arch/arm/mach-pxa/palmtx.c                         |    2 +-
 arch/arm/mach-pxa/palmz72.c                        |    2 +-
 arch/arm/mach-pxa/tavorevb.c                       |    2 +-
 arch/arm/mach-pxa/z2.c                             |    2 +-
 arch/arm/mach-pxa/zylonite.c                       |    2 +-
 .../mach => plat-pxa/include/plat}/pxa27x_keypad.h |    0
 drivers/input/keyboard/pxa27x_keypad.c             |    2 +-
 16 files changed, 16 insertions(+), 16 deletions(-)
 rename arch/arm/{mach-pxa/include/mach => plat-pxa/include/plat}/pxa27x_keypad.h (100%)

diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c
index a2fc859..08b4103 100644
--- a/arch/arm/mach-pxa/devices.c
+++ b/arch/arm/mach-pxa/devices.c
@@ -11,7 +11,7 @@
 #include <mach/mmc.h>
 #include <mach/irda.h>
 #include <mach/ohci.h>
-#include <mach/pxa27x_keypad.h>
+#include <plat/pxa27x_keypad.h>
 #include <mach/pxa2xx_spi.h>
 #include <mach/camera.h>
 #include <mach/audio.h>
diff --git a/arch/arm/mach-pxa/em-x270.c b/arch/arm/mach-pxa/em-x270.c
index 0517c17..51286a7 100644
--- a/arch/arm/mach-pxa/em-x270.c
+++ b/arch/arm/mach-pxa/em-x270.c
@@ -43,7 +43,7 @@
 #include <mach/pxafb.h>
 #include <mach/ohci.h>
 #include <mach/mmc.h>
-#include <mach/pxa27x_keypad.h>
+#include ...
From: Marek Vasut
Date: Friday, September 3, 2010 - 7:11 pm

Hey, so what's so V2-ish on this one? Isn't this just a resubmission ?

--

From: David Miller
Date: Friday, September 3, 2010 - 2:52 pm

Please fix the date on your email postings, they says it's August
26th.

That's several days in the past, and every time someone posts
with a date that far in the past I get flooded with bounce
messages because many mail systems outright reject such postings.

Thanks.
--

From: Mark F. Brown
Date: Friday, September 3, 2010 - 3:06 pm

Sorry about that! When my laptop resumed it failed to update the
system time properly. Will resubmit!

Regards,
-- Mark
--

Previous thread: Re: [Bug 17752] 2.6.36-rc3: inconsistent lock state (iprune_sem, shrink_icache_memory) by Stefan Richter on Friday, September 3, 2010 - 2:34 pm. (1 message)

Next thread: [ANNOUNCE] Git 1.7.2.3 by Junio C Hamano on Friday, September 3, 2010 - 3:07 pm. (1 message)