With register offsets now defined for respective OMAP versions we can get rid
of cpu_class_* checks. This function now has common initialization code for
all OMAP versions. Initialization specific to OMAP16xx has been moved within
omap16xx_gpio_init().
Signed-off-by: Tarun Kanti DebBarma <tarun.ka...@ti.com>
Signed-off-by: Charulatha V <ch...@ti.com>
---
arch/arm/mach-omap1/gpio16xx.c | 19 ++++++-
arch/arm/plat-omap/include/plat/gpio.h | 2 +
drivers/gpio/gpio-omap.c | 96 +++++++++++++++-----------------
3 files changed, 64 insertions(+), 53 deletions(-)
diff --git a/arch/arm/mach-omap1/gpio16xx.c b/arch/arm/mach-omap1/gpio16xx.c
index 08dda3c..cfd86b9 100644
--- a/arch/arm/mach-omap1/gpio16xx.c
+++ b/arch/arm/mach-omap1/gpio16xx.c
@@ -93,6 +93,7 @@ static struct omap_gpio_reg_offs omap16xx_gpio_regs = {
.wkup_status = OMAP1610_GPIO_WAKEUPENABLE,
.edgectrl1 = OMAP1610_GPIO_EDGE_CTRL1,
.edgectrl2 = OMAP1610_GPIO_EDGE_CTRL2,
+ .sysconfig = OMAP1610_GPIO_SYSCONFIG,
};
static struct __initdata omap_gpio_platform_data omap16xx_gpio1_config = {
@@ -218,12 +219,28 @@ static struct __initdata platform_device *
omap16xx_gpio_dev[] = {
static int __init omap16xx_gpio_init(void)
{
int i;
+ void __iomem *base;
+ struct resource *res;
+ struct platform_device *pdev;
+ struct omap_gpio_platform_data *pdata;
if (!cpu_is_omap16xx())
return -EINVAL;
- for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++)
+ for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++) {
+ pdev = omap16xx_gpio_dev[i];
+ pdata = pdev->dev.platform_data;
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = ioremap(res->start, resource_size(res));
+
+ if (pdata->regs->sysconfig)
+ __raw_writew(0x0014, base + OMAP1610_GPIO_SYSCONFIG);
+
+ omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04,
+ ULPD_CAM_CLK_CTRL);
+
platform_device_register(omap16xx_gpio_dev[i]);
+ }
return 0;
}
diff --git a/arch/arm/plat-omap/include/plat/gpio.h
b/arch/arm/plat-omap/include/plat/gpio.h
index 4f584de..3f7b028 100644
--- a/arch/arm/plat-omap/include/plat/gpio.h
+++ b/arch/arm/plat-omap/include/plat/gpio.h
@@ -198,6 +198,8 @@ struct omap_gpio_reg_offs {
u16 irqctrl;
u16 edgectrl1;
u16 edgectrl2;
+ /* Not applicable for OMAP2+ as hwmod layer takes care of sysconfig */
+ u16 sysconfig;
bool irqenable_inv;
};
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index 769fae7..3acbaa9 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -75,6 +75,7 @@ struct gpio_bank {
void (*set_dataout)(struct gpio_bank *bank, int gpio, int enable);
int (*get_context_loss_count)(struct device *dev);
+ void (*do_raw_write)(void __iomem *reg, int set);
struct omap_gpio_reg_offs *regs;
};
@@ -864,67 +865,53 @@ static void __init omap_gpio_show_rev(struct gpio_bank
*bank)
called = true;
}
+static void __do_raw_writel(void __iomem *reg, int set)
+{
+ if (set)
+ __raw_writel(0xffffffff, reg);
+ else
+ __raw_writel(0x00000000, reg);
+
+}
+
+static void __do_raw_writew(void __iomem *reg, int set)
+{
+ if (set)
+ __raw_writew(0xffff, reg);
+ else
+ __raw_writew(0x0000, reg);
+}
+
/* This lock class tells lockdep that GPIO irqs are in a different
* category than their parents, so it won't report false recursion.
*/
static struct lock_class_key gpio_lock_class;
-/* TODO: Cleanup cpu_is_* checks */
static void omap_gpio_mod_init(struct gpio_bank *bank)
{
- if (cpu_class_is_omap2()) {
- if (cpu_is_omap44xx()) {
- __raw_writel(0xffffffff, bank->base +
- OMAP4_GPIO_IRQSTATUSCLR0);
- __raw_writel(0x00000000, bank->base +
- OMAP4_GPIO_DEBOUNCENABLE);
- /* Initialize interface clk ungated, module enabled */
- __raw_writel(0, bank->base + OMAP4_GPIO_CTRL);
- } else if (cpu_is_omap34xx()) {
- __raw_writel(0x00000000, bank->base +
- OMAP24XX_GPIO_IRQENABLE1);
- __raw_writel(0xffffffff, bank->base +
- OMAP24XX_GPIO_IRQSTATUS1);
- __raw_writel(0x00000000, bank->base +
- OMAP24XX_GPIO_DEBOUNCE_EN);
-
- /* Initialize interface clk ungated, module enabled */
- __raw_writel(0, bank->base + OMAP24XX_GPIO_CTRL);
- }
- } else if (cpu_class_is_omap1()) {
- if (bank_is_mpuio(bank)) {
- __raw_writew(0xffff, bank->base +
- OMAP_MPUIO_GPIO_MASKIT / bank->stride);
+ if (bank_is_mpuio(bank)) {
+ bank->do_raw_write(bank->base + bank->regs->irqenable, 1);
+ if (bank->regs->wkup_status)
mpuio_init(bank);
- }
- if (cpu_is_omap15xx() && bank->method == METHOD_GPIO_1510) {
- __raw_writew(0xffff, bank->base
- + OMAP1510_GPIO_INT_MASK);
- __raw_writew(0x0000, bank->base
- + OMAP1510_GPIO_INT_STATUS);
- }
- if (cpu_is_omap16xx() && bank->method == METHOD_GPIO_1610) {
- __raw_writew(0x0000, bank->base
- + OMAP1610_GPIO_IRQENABLE1);
- __raw_writew(0xffff, bank->base
- + OMAP1610_GPIO_IRQSTATUS1);
- __raw_writew(0x0014, bank->base
- + OMAP1610_GPIO_SYSCONFIG);
-
- /*
- * Enable system clock for GPIO module.
- * The CAM_CLK_CTRL *is* really the right place.
- */
- omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04,
- ULPD_CAM_CLK_CTRL);
- }
- if (cpu_is_omap7xx() && bank->method == METHOD_GPIO_7XX) {
- __raw_writel(0xffffffff, bank->base
- + OMAP7XX_GPIO_INT_MASK);
- __raw_writel(0x00000000, bank->base
- + OMAP7XX_GPIO_INT_STATUS);
- }
+ return;
}
+
+ if (bank->regs->ctrl)
+ /* Initialize interface clk ungated, module enabled */
+ bank->do_raw_write(bank->base + bank->regs->ctrl, 0);
+
+ if (bank->regs->clr_irqenable && bank->width == 32)
+ bank->do_raw_write(bank->base + bank->regs->clr_irqenable, 1);
+ else if (bank->regs->irqenable)
+ bank->do_raw_write(bank->base + bank->regs->irqenable,
+ bank->regs->irqenable_inv);
+
+ if (bank->regs->irqstatus)
+ bank->do_raw_write(bank->base + bank->regs->irqstatus,
+ bank->regs->irqenable_inv == 0);
+
+ if (bank->regs->debounce_en)
+ bank->do_raw_write(bank->base + bank->regs->debounce_en, 0);
}
static __init void
@@ -1041,6 +1028,11 @@ static int __devinit omap_gpio_probe(struct
platform_device *pdev)
bank->get_context_loss_count = pdata->get_context_loss_count;
bank->regs = pdata->regs;
+ if (bank->width == 32)
+ bank->do_raw_write = __do_raw_writel;
+ else
+ bank->do_raw_write = __do_raw_writew;
+
if (bank->regs->set_dataout && bank->regs->clr_dataout)
bank->set_dataout = _set_gpio_dataout_reg;
else
--
1.6.0.4
--
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