diff options
author | Olof Johansson <olof@lixom.net> | 2012-04-05 10:41:49 -0700 |
---|---|---|
committer | Olof Johansson <olof@lixom.net> | 2012-04-05 10:41:49 -0700 |
commit | 98f0ec0dd4e0c96fcc7bc6dae08007820b1134a8 (patch) | |
tree | 170a3f52ce95c07bb2438f3ccf744d30ffdf4411 | |
parent | cfe2da5347950cf2c581ced7285dcafaa44aa626 (diff) | |
parent | 4a3398ee9d7d8008ee9bfc8a600b734a1b22af23 (diff) |
Merge branch 'for-3.4/fixes-for-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra into fixes
* 'for-3.4/fixes-for-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
gpio: tegra: Iterate over the correct number of banks
gpio: tegra: fix register address calculations for Tegra30
-rw-r--r-- | drivers/gpio/gpio-tegra.c | 59 |
1 files changed, 44 insertions, 15 deletions
diff --git a/drivers/gpio/gpio-tegra.c b/drivers/gpio/gpio-tegra.c index 32de6707e3c4..12f349b3830d 100644 --- a/drivers/gpio/gpio-tegra.c +++ b/drivers/gpio/gpio-tegra.c @@ -22,7 +22,7 @@ #include <linux/interrupt.h> #include <linux/io.h> #include <linux/gpio.h> -#include <linux/of.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/module.h> #include <linux/irqdomain.h> @@ -37,7 +37,8 @@ #define GPIO_PORT(x) (((x) >> 3) & 0x3) #define GPIO_BIT(x) ((x) & 0x7) -#define GPIO_REG(x) (GPIO_BANK(x) * 0x80 + GPIO_PORT(x) * 4) +#define GPIO_REG(x) (GPIO_BANK(x) * tegra_gpio_bank_stride + \ + GPIO_PORT(x) * 4) #define GPIO_CNF(x) (GPIO_REG(x) + 0x00) #define GPIO_OE(x) (GPIO_REG(x) + 0x10) @@ -48,12 +49,12 @@ #define GPIO_INT_LVL(x) (GPIO_REG(x) + 0x60) #define GPIO_INT_CLR(x) (GPIO_REG(x) + 0x70) -#define GPIO_MSK_CNF(x) (GPIO_REG(x) + 0x800) -#define GPIO_MSK_OE(x) (GPIO_REG(x) + 0x810) -#define GPIO_MSK_OUT(x) (GPIO_REG(x) + 0X820) -#define GPIO_MSK_INT_STA(x) (GPIO_REG(x) + 0x840) -#define GPIO_MSK_INT_ENB(x) (GPIO_REG(x) + 0x850) -#define GPIO_MSK_INT_LVL(x) (GPIO_REG(x) + 0x860) +#define GPIO_MSK_CNF(x) (GPIO_REG(x) + tegra_gpio_upper_offset + 0x00) +#define GPIO_MSK_OE(x) (GPIO_REG(x) + tegra_gpio_upper_offset + 0x10) +#define GPIO_MSK_OUT(x) (GPIO_REG(x) + tegra_gpio_upper_offset + 0X20) +#define GPIO_MSK_INT_STA(x) (GPIO_REG(x) + tegra_gpio_upper_offset + 0x40) +#define GPIO_MSK_INT_ENB(x) (GPIO_REG(x) + tegra_gpio_upper_offset + 0x50) +#define GPIO_MSK_INT_LVL(x) (GPIO_REG(x) + tegra_gpio_upper_offset + 0x60) #define GPIO_INT_LVL_MASK 0x010101 #define GPIO_INT_LVL_EDGE_RISING 0x000101 @@ -78,6 +79,8 @@ struct tegra_gpio_bank { static struct irq_domain *irq_domain; static void __iomem *regs; static u32 tegra_gpio_bank_count; +static u32 tegra_gpio_bank_stride; +static u32 tegra_gpio_upper_offset; static struct tegra_gpio_bank *tegra_gpio_banks; static inline void tegra_gpio_writel(u32 val, u32 reg) @@ -333,6 +336,26 @@ static struct irq_chip tegra_gpio_irq_chip = { #endif }; +struct tegra_gpio_soc_config { + u32 bank_stride; + u32 upper_offset; +}; + +static struct tegra_gpio_soc_config tegra20_gpio_config = { + .bank_stride = 0x80, + .upper_offset = 0x800, +}; + +static struct tegra_gpio_soc_config tegra30_gpio_config = { + .bank_stride = 0x100, + .upper_offset = 0x80, +}; + +static struct of_device_id tegra_gpio_of_match[] __devinitdata = { + { .compatible = "nvidia,tegra30-gpio", .data = &tegra30_gpio_config }, + { .compatible = "nvidia,tegra20-gpio", .data = &tegra20_gpio_config }, + { }, +}; /* This lock class tells lockdep that GPIO irqs are in a different * category than their parents, so it won't report false recursion. @@ -341,6 +364,8 @@ static struct lock_class_key gpio_lock_class; static int __devinit tegra_gpio_probe(struct platform_device *pdev) { + const struct of_device_id *match; + struct tegra_gpio_soc_config *config; int irq_base; struct resource *res; struct tegra_gpio_bank *bank; @@ -348,6 +373,15 @@ static int __devinit tegra_gpio_probe(struct platform_device *pdev) int i; int j; + match = of_match_device(tegra_gpio_of_match, &pdev->dev); + if (match) + config = (struct tegra_gpio_soc_config *)match->data; + else + config = &tegra20_gpio_config; + + tegra_gpio_bank_stride = config->bank_stride; + tegra_gpio_upper_offset = config->upper_offset; + for (;;) { res = platform_get_resource(pdev, IORESOURCE_IRQ, tegra_gpio_bank_count); if (!res) @@ -402,7 +436,7 @@ static int __devinit tegra_gpio_probe(struct platform_device *pdev) return -ENODEV; } - for (i = 0; i < 7; i++) { + for (i = 0; i < tegra_gpio_bank_count; i++) { for (j = 0; j < 4; j++) { int gpio = tegra_gpio_compose(i, j, 0); tegra_gpio_writel(0x00, GPIO_INT_ENB(gpio)); @@ -441,11 +475,6 @@ static int __devinit tegra_gpio_probe(struct platform_device *pdev) return 0; } -static struct of_device_id tegra_gpio_of_match[] __devinitdata = { - { .compatible = "nvidia,tegra20-gpio", }, - { }, -}; - static struct platform_driver tegra_gpio_driver = { .driver = { .name = "tegra-gpio", @@ -485,7 +514,7 @@ static int dbg_gpio_show(struct seq_file *s, void *unused) int i; int j; - for (i = 0; i < 7; i++) { + for (i = 0; i < tegra_gpio_bank_count; i++) { for (j = 0; j < 4; j++) { int gpio = tegra_gpio_compose(i, j, 0); seq_printf(s, |