diff options
Diffstat (limited to 'target/linux/ar71xx/patches-3.3/123-MIPS-ath79-add-GPIO-support-code-for-AR934X.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.3/123-MIPS-ath79-add-GPIO-support-code-for-AR934X.patch | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.3/123-MIPS-ath79-add-GPIO-support-code-for-AR934X.patch b/target/linux/ar71xx/patches-3.3/123-MIPS-ath79-add-GPIO-support-code-for-AR934X.patch new file mode 100644 index 000000000..77c8d5a57 --- /dev/null +++ b/target/linux/ar71xx/patches-3.3/123-MIPS-ath79-add-GPIO-support-code-for-AR934X.patch @@ -0,0 +1,102 @@ +From 77bb01d1919bcb6787d5cde9056936420288ab34 Mon Sep 17 00:00:00 2001 +From: Gabor Juhos <juhosg@openwrt.org> +Date: Wed, 14 Mar 2012 10:45:23 +0100 +Subject: [PATCH 28/47] MIPS: ath79: add GPIO support code for AR934X + +Signed-off-by: Gabor Juhos <juhosg@openwrt.org> +Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> +Cc: linux-mips@linux-mips.org +Cc: mcgrof@infradead.org +Patchwork: https://patchwork.linux-mips.org/patch/3508/ +Signed-off-by: Ralf Baechle <ralf@linux-mips.org> +--- + arch/mips/ath79/gpio.c | 47 +++++++++++++++++++++++- + arch/mips/include/asm/mach-ath79/ar71xx_regs.h | 1 + + 2 files changed, 47 insertions(+), 1 deletions(-) + +--- a/arch/mips/ath79/gpio.c ++++ b/arch/mips/ath79/gpio.c +@@ -1,9 +1,12 @@ + /* + * Atheros AR71XX/AR724X/AR913X GPIO API support + * +- * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> ++ * Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com> ++ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> + * ++ * Parts of this file are based on Atheros' 2.6.15/2.6.31 BSP ++ * + * 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 + * by the Free Software Foundation. +@@ -89,6 +92,42 @@ static int ath79_gpio_direction_output(s + return 0; + } + ++static int ar934x_gpio_direction_input(struct gpio_chip *chip, unsigned offset) ++{ ++ void __iomem *base = ath79_gpio_base; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&ath79_gpio_lock, flags); ++ ++ __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) | (1 << offset), ++ base + AR71XX_GPIO_REG_OE); ++ ++ spin_unlock_irqrestore(&ath79_gpio_lock, flags); ++ ++ return 0; ++} ++ ++static int ar934x_gpio_direction_output(struct gpio_chip *chip, unsigned offset, ++ int value) ++{ ++ void __iomem *base = ath79_gpio_base; ++ unsigned long flags; ++ ++ spin_lock_irqsave(&ath79_gpio_lock, flags); ++ ++ if (value) ++ __raw_writel(1 << offset, base + AR71XX_GPIO_REG_SET); ++ else ++ __raw_writel(1 << offset, base + AR71XX_GPIO_REG_CLEAR); ++ ++ __raw_writel(__raw_readl(base + AR71XX_GPIO_REG_OE) & ~(1 << offset), ++ base + AR71XX_GPIO_REG_OE); ++ ++ spin_unlock_irqrestore(&ath79_gpio_lock, flags); ++ ++ return 0; ++} ++ + static struct gpio_chip ath79_gpio_chip = { + .label = "ath79", + .get = ath79_gpio_get_value, +@@ -155,11 +194,17 @@ void __init ath79_gpio_init(void) + ath79_gpio_count = AR913X_GPIO_COUNT; + else if (soc_is_ar933x()) + ath79_gpio_count = AR933X_GPIO_COUNT; ++ else if (soc_is_ar934x()) ++ ath79_gpio_count = AR934X_GPIO_COUNT; + else + BUG(); + + ath79_gpio_base = ioremap_nocache(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE); + ath79_gpio_chip.ngpio = ath79_gpio_count; ++ if (soc_is_ar934x()) { ++ ath79_gpio_chip.direction_input = ar934x_gpio_direction_input; ++ ath79_gpio_chip.direction_output = ar934x_gpio_direction_output; ++ } + + err = gpiochip_add(&ath79_gpio_chip); + if (err) +--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h ++++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h +@@ -367,5 +367,6 @@ + #define AR724X_GPIO_COUNT 18 + #define AR913X_GPIO_COUNT 22 + #define AR933X_GPIO_COUNT 30 ++#define AR934X_GPIO_COUNT 23 + + #endif /* __ASM_MACH_AR71XX_REGS_H */ |