ramips: fix gpio base numbering

make banks 0 based to unbreak userland ABI

Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 36561

diff --git a/target/linux/ramips/patches-3.8/0130-GPIO-MIPS-ralink-adds-ralink-gpio-support.patch b/target/linux/ramips/patches-3.8/0130-GPIO-MIPS-ralink-adds-ralink-gpio-support.patch
index 6f448882b197bf6b610c52c1fbd1a3fb095f2bd8..e3eeae9e8ea5020b67875e4957b79eddc204f17b 100644 (file)
--- a/target/linux/ramips/patches-3.8/0130-GPIO-MIPS-ralink-adds-ralink-gpio-support.patch
+++ b/target/linux/ramips/patches-3.8/0130-GPIO-MIPS-ralink-adds-ralink-gpio-support.patch
@@ -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);
 +