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ramips: fix gpio base numbering

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make banks 0 based to unbreak userland ABI

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 36561
This commit is contained in:
John Crispin 2013-05-06 16:45:12 +00:00
parent 338ff04cab
commit 7c04b3bd66
1 changed files with 32 additions and 16 deletions
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48
target/linux/ramips/patches-3.8/0130-GPIO-MIPS-ralink-adds-ralink-gpio-support.patch
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@ -17,9 +17,11 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
create mode 100644 arch/mips/include/asm/mach-ralink/gpio.h
create mode 100644 drivers/gpio/gpio-ralink.c
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -449,6 +449,7 @@ config RALINK
Index: linux-3.8.11/arch/mips/Kconfig
===================================================================
--- linux-3.8.11.orig/arch/mips/Kconfig 2013-05-04 13:20:48.399042973 +0200
+++ linux-3.8.11/arch/mips/Kconfig 2013-05-04 13:20:54.963043258 +0200
@@ -449,6 +449,7 @@
select SYS_HAS_EARLY_PRINTK
select HAVE_MACH_CLKDEV
select CLKDEV_LOOKUP
@ -27,8 +29,10 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
config SGI_IP22
bool "SGI IP22 (Indy/Indigo2)"
--- /dev/null
+++ b/arch/mips/include/asm/mach-ralink/gpio.h
Index: linux-3.8.11/arch/mips/include/asm/mach-ralink/gpio.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-3.8.11/arch/mips/include/asm/mach-ralink/gpio.h 2013-05-04 13:20:54.963043258 +0200
@@ -0,0 +1,24 @@
+/*
+ * Ralink SoC GPIO API support
@ -54,9 +58,11 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+#define gpio_to_irq __gpio_to_irq
+
+#endif /* __ASM_MACH_RALINK_GPIO_H */
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -201,6 +201,12 @@ config GPIO_PXA
Index: linux-3.8.11/drivers/gpio/Kconfig
===================================================================
--- linux-3.8.11.orig/drivers/gpio/Kconfig 2013-05-04 13:20:48.399042973 +0200
+++ linux-3.8.11/drivers/gpio/Kconfig 2013-05-04 13:20:54.963043258 +0200
@@ -201,6 +201,12 @@
help
Say yes here to support the PXA GPIO device
@ -69,9 +75,11 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
config GPIO_SPEAR_SPICS
bool "ST SPEAr13xx SPI Chip Select as GPIO support"
depends on PLAT_SPEAR
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -54,6 +54,7 @@ obj-$(CONFIG_GPIO_PCF857X) += gpio-pcf85
Index: linux-3.8.11/drivers/gpio/Makefile
===================================================================
--- linux-3.8.11.orig/drivers/gpio/Makefile 2013-05-04 13:20:48.399042973 +0200
+++ linux-3.8.11/drivers/gpio/Makefile 2013-05-04 13:20:54.963043258 +0200
@@ -54,6 +54,7 @@
obj-$(CONFIG_GPIO_PCH) += gpio-pch.o
obj-$(CONFIG_GPIO_PL061) += gpio-pl061.o
obj-$(CONFIG_GPIO_PXA) += gpio-pxa.o
@ -79,9 +87,11 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
obj-$(CONFIG_GPIO_RC5T583) += gpio-rc5t583.o
obj-$(CONFIG_GPIO_RDC321X) += gpio-rdc321x.o
obj-$(CONFIG_PLAT_SAMSUNG) += gpio-samsung.o
--- /dev/null
+++ b/drivers/gpio/gpio-ralink.c
@@ -0,0 +1,176 @@
Index: linux-3.8.11/drivers/gpio/gpio-ralink.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-3.8.11/drivers/gpio/gpio-ralink.c 2013-05-06 11:39:24.816485479 +0200
@@ -0,0 +1,182 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
@ -189,6 +199,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ struct ralink_gpio_chip *gc;
+ const __be32 *ngpio;
+ const __be32 *gpiobase;
+
+ if (!res) {
+ dev_err(&pdev->dev, "failed to find resource\n");
@ -218,17 +229,22 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
+ return -EINVAL;
+ }
+
+ spin_lock_init(&gc->lock);
+ gpiobase = of_get_property(np, "ralink,gpio-base", NULL);
+ if (gpiobase)
+ gc->chip.base = be32_to_cpu(*gpiobase);
+ else
+ gc->chip.base = -1;
+
+ gc->chip.label = dev_name(&pdev->dev);
+ gc->chip.of_node = np;
+ gc->chip.base = -1;
+ gc->chip.ngpio = be32_to_cpu(*ngpio);
+ gc->chip.direction_input = ralink_gpio_direction_input;
+ gc->chip.direction_output = ralink_gpio_direction_output;
+ gc->chip.get = ralink_gpio_get;
+ gc->chip.set = ralink_gpio_set;
+
+ spin_lock_init(&gc->lock);
+
+ /* set polarity to low for all lines */
+ rt_gpio_w32(gc, GPIO_REG_POL, 0);
+