Patchwork [U-Boot,v7,2/2] gpio: Add GPIO driver for Marvell SoC Armada100

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Submitter Ajay Bhargav
Date Aug. 18, 2011, 5:37 a.m.
Message ID <1313645871-15399-2-git-send-email-ajay.bhargav@einfochips.com>
Download mbox | patch
Permalink /patch/110497/
State Accepted
Commit 3cf97f4543f34e7be3f2a3cc15bef5243eb822f9
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Comments

Ajay Bhargav - Aug. 18, 2011, 5:37 a.m.
This patch adds support for generic GPIO driver framework for Marvell
SoC Armada100.

Signed-off-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
---
Changes for v2:
	- Added function get_gpio_base
	- GPIO base address added to armada100.h
Changes for v3:
	- gpio register map moved to mvgpio.h
Changes for v4:
	- updated gpio.h
	- removed unwanted defines from armada100.h
Changes for v5:
	- Coding Style cleanup
	- added change history
Changes for v6:
	- No change
Changes for v7:
	- Added GPIO level defines

 arch/arm/include/asm/arch-armada100/gpio.h |   48 ++++++++++++++++++++++++++++
 1 files changed, 48 insertions(+), 0 deletions(-)
 create mode 100644 arch/arm/include/asm/arch-armada100/gpio.h
Prafulla Wadaskar - Aug. 21, 2011, 7:32 a.m.
> -----Original Message-----
> From: Ajay Bhargav [mailto:ajay.bhargav@einfochips.com]
> Sent: Thursday, August 18, 2011 11:08 AM
> To: Prafulla Wadaskar
> Cc: u-boot@lists.denx.de; Ajay Bhargav
> Subject: [PATCH v7 2/2] gpio: Add GPIO driver for Marvell SoC Armada100
> 
> This patch adds support for generic GPIO driver framework for Marvell
> SoC Armada100.
> 
> Signed-off-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
> ---
> Changes for v2:
> 	- Added function get_gpio_base
> 	- GPIO base address added to armada100.h
> Changes for v3:
> 	- gpio register map moved to mvgpio.h
> Changes for v4:
> 	- updated gpio.h
> 	- removed unwanted defines from armada100.h
> Changes for v5:
> 	- Coding Style cleanup
> 	- added change history
> Changes for v6:
> 	- No change
> Changes for v7:
> 	- Added GPIO level defines
> 
>  arch/arm/include/asm/arch-armada100/gpio.h |   48
> ++++++++++++++++++++++++++++
>  1 files changed, 48 insertions(+), 0 deletions(-)
>  create mode 100644 arch/arm/include/asm/arch-armada100/gpio.h
> 

Applied to u-boot-marvell.git master branch

Regards..
Prafulla . .

Patch

diff --git a/arch/arm/include/asm/arch-armada100/gpio.h b/arch/arm/include/asm/arch-armada100/gpio.h
new file mode 100644
index 0000000..9e5e7b9
--- /dev/null
+++ b/arch/arm/include/asm/arch-armada100/gpio.h
@@ -0,0 +1,48 @@ 
+/*
+ * (C) Copyright 2011
+ * eInfochips Ltd. <www.einfochips.com>
+ * Written-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
+ *
+ * (C) Copyright 2010
+ * Marvell Semiconductor <www.marvell.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA
+ */
+
+#ifndef _ASM_ARCH_GPIO_H
+#define _ASM_ARCH_GPIO_H
+
+#include <asm/types.h>
+#include <asm/arch/armada100.h>
+
+#define GPIO_HIGH		1
+#define GPIO_LOW		0
+
+#define GPIO_TO_REG(gp)		(gp >> 5)
+#define GPIO_TO_BIT(gp)		(1 << (gp & 0x1F))
+#define GPIO_VAL(gp, val)	((val >> (gp & 0x1F)) & 0x01)
+
+static inline void *get_gpio_base(int bank)
+{
+	const unsigned int offset[4] = {0, 4, 8, 0x100};
+	/* gpio register bank offset - refer Appendix A.36 */
+	return (struct gpio_reg *)(ARMD1_GPIO_BASE + offset[bank]);
+}
+
+#endif /* _ASM_ARCH_GPIO_H */