omap: am33xx: enable gpio support
This patch uses the code in omap-common to support gpio modules 1-3
on am33xx based boards.
It adds base address and register definitions, enables clocks to the
modules, and enables building the common gpio code for CONFIG_AM33XX
as well as CONFIG_OMAP
Signed-off-by: Steve Sakoman <steve@sakoman.com>
diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c
index 71309a7..1104655 100644
--- a/arch/arm/cpu/armv7/am33xx/board.c
+++ b/arch/arm/cpu/armv7/am33xx/board.c
@@ -22,6 +22,7 @@
#include <asm/arch/omap.h>
#include <asm/arch/ddr_defs.h>
#include <asm/arch/clock.h>
+#include <asm/arch/gpio.h>
#include <asm/arch/mmc_host_def.h>
#include <asm/arch/common_def.h>
#include <asm/io.h>
@@ -33,6 +34,15 @@
struct gptimer *timer_base = (struct gptimer *)CONFIG_SYS_TIMERBASE;
struct uart_sys *uart_base = (struct uart_sys *)DEFAULT_UART_BASE;
+static const struct gpio_bank gpio_bank_am33xx[4] = {
+ { (void *)AM33XX_GPIO0_BASE, METHOD_GPIO_24XX },
+ { (void *)AM33XX_GPIO1_BASE, METHOD_GPIO_24XX },
+ { (void *)AM33XX_GPIO2_BASE, METHOD_GPIO_24XX },
+ { (void *)AM33XX_GPIO3_BASE, METHOD_GPIO_24XX },
+};
+
+const struct gpio_bank *const omap_gpio_bank = gpio_bank_am33xx;
+
/* UART Defines */
#ifdef CONFIG_SPL_BUILD
#define UART_RESET (0x1 << 1)
diff --git a/arch/arm/cpu/armv7/am33xx/clock.c b/arch/arm/cpu/armv7/am33xx/clock.c
index bbb9c13..ddce213 100644
--- a/arch/arm/cpu/armv7/am33xx/clock.c
+++ b/arch/arm/cpu/armv7/am33xx/clock.c
@@ -118,6 +118,21 @@
writel(PRCM_MOD_EN, &cmwkup->wkup_i2c0ctrl);
while (readl(&cmwkup->wkup_i2c0ctrl) != PRCM_MOD_EN)
;
+
+ /* gpio1 module */
+ writel(PRCM_MOD_EN, &cmper->gpio1clkctrl);
+ while (readl(&cmper->gpio1clkctrl) != PRCM_MOD_EN)
+ ;
+
+ /* gpio2 module */
+ writel(PRCM_MOD_EN, &cmper->gpio2clkctrl);
+ while (readl(&cmper->gpio2clkctrl) != PRCM_MOD_EN)
+ ;
+
+ /* gpio3 module */
+ writel(PRCM_MOD_EN, &cmper->gpio3clkctrl);
+ while (readl(&cmper->gpio3clkctrl) != PRCM_MOD_EN)
+ ;
}
static void mpu_pll_config(void)
diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile
index 2a6625f..1394c3f 100644
--- a/arch/arm/cpu/armv7/omap-common/Makefile
+++ b/arch/arm/cpu/armv7/omap-common/Makefile
@@ -29,7 +29,7 @@
COBJS := timer.o
COBJS += utils.o
-ifdef CONFIG_OMAP
+ifneq ($(CONFIG_AM33XX)$(CONFIG_OMAP),)
COBJS += gpio.o
endif
diff --git a/arch/arm/include/asm/arch-am33xx/cpu.h b/arch/arm/include/asm/arch-am33xx/cpu.h
index a027e31..e63ab74 100644
--- a/arch/arm/include/asm/arch-am33xx/cpu.h
+++ b/arch/arm/include/asm/arch-am33xx/cpu.h
@@ -235,6 +235,26 @@
unsigned int resv1[16];
unsigned int statusreg; /* ofset 0x40 */
};
+
+/* AM33XX GPIO registers */
+#define OMAP_GPIO_REVISION 0x0000
+#define OMAP_GPIO_SYSCONFIG 0x0010
+#define OMAP_GPIO_SYSSTATUS 0x0114
+#define OMAP_GPIO_IRQSTATUS1 0x002c
+#define OMAP_GPIO_IRQSTATUS2 0x0030
+#define OMAP_GPIO_CTRL 0x0130
+#define OMAP_GPIO_OE 0x0134
+#define OMAP_GPIO_DATAIN 0x0138
+#define OMAP_GPIO_DATAOUT 0x013c
+#define OMAP_GPIO_LEVELDETECT0 0x0140
+#define OMAP_GPIO_LEVELDETECT1 0x0144
+#define OMAP_GPIO_RISINGDETECT 0x0148
+#define OMAP_GPIO_FALLINGDETECT 0x014c
+#define OMAP_GPIO_DEBOUNCE_EN 0x0150
+#define OMAP_GPIO_DEBOUNCE_VAL 0x0154
+#define OMAP_GPIO_CLEARDATAOUT 0x0190
+#define OMAP_GPIO_SETDATAOUT 0x0194
+
#endif /* __ASSEMBLY__ */
#endif /* __KERNEL_STRICT_NAMES */
diff --git a/arch/arm/include/asm/arch-am33xx/gpio.h b/arch/arm/include/asm/arch-am33xx/gpio.h
new file mode 100644
index 0000000..1a211e9
--- /dev/null
+++ b/arch/arm/include/asm/arch-am33xx/gpio.h
@@ -0,0 +1,29 @@
+/*
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ */
+#ifndef _GPIO_AM33xx_H
+#define _GPIO_AM33xx_H
+
+#include <asm/omap_gpio.h>
+
+#define AM33XX_GPIO0_BASE 0x44E07000
+#define AM33XX_GPIO1_BASE 0x4804C000
+#define AM33XX_GPIO2_BASE 0x481AC000
+#define AM33XX_GPIO3_BASE 0x481AE000
+
+#endif /* _GPIO_AM33xx_H */