x86: add support for the RDC R-321x SoC

This patch adds support for the RDC R-321x system-on-chip,
also known as R-861x-(G). It uses the generic GPIO API and
has support for the on-chip hardware watchdog.

Build-fix from: Randy Dunlap <randy.dunlap@oracle.com>

Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

3 files changed, 64 insertions, 0 deletions

diff --git a/include/asm-x86/mach-rdc321x/gpio.h b/include/asm-x86/mach-rdc321x/gpio.h
new file mode 100644
index 000000000000..db31b929b990
--- /dev/null
+++ b/include/asm-x86/mach-rdc321x/gpio.h
@@ -0,0 +1,56 @@
+#ifndef _RDC321X_GPIO_H
+#define _RDC321X_GPIO_H
+
+extern int rdc_gpio_get_value(unsigned gpio);
+extern void rdc_gpio_set_value(unsigned gpio, int value);
+extern int rdc_gpio_direction_input(unsigned gpio);
+extern int rdc_gpio_direction_output(unsigned gpio, int value);
+
+
+/* Wrappers for the arch-neutral GPIO API */
+
+static inline int gpio_request(unsigned gpio, const char *label)
+{
+        /* Not yet implemented */
+        return 0;
+}
+
+static inline void gpio_free(unsigned gpio)
+{
+        /* Not yet implemented */
+}
+
+static inline int gpio_direction_input(unsigned gpio)
+{
+        return rdc_gpio_direction_input(gpio);
+}
+
+static inline int gpio_direction_output(unsigned gpio, int value)
+{
+        return rdc_gpio_direction_output(gpio, value);
+}
+
+static inline int gpio_get_value(unsigned gpio)
+{
+        return rdc_gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned gpio, int value)
+{
+        rdc_gpio_set_value(gpio, value);
+}
+
+static inline int gpio_to_irq(unsigned gpio)
+{
+        return gpio;
+}
+
+static inline int irq_to_gpio(unsigned irq)
+{
+        return irq;
+}
+
+/* For cansleep */
+#include <asm-generic/gpio.h>
+
+#endif /* _RDC321X_GPIO_H_ */
diff --git a/include/asm-x86/mach-rdc321x/rdc321x_defs.h b/include/asm-x86/mach-rdc321x/rdc321x_defs.h
new file mode 100644
index 000000000000..838ba8f64fd3
--- /dev/null
+++ b/include/asm-x86/mach-rdc321x/rdc321x_defs.h
@@ -0,0 +1,6 @@
+#define PFX     "rdc321x: "
+
+/* General purpose configuration and data registers */
+#define RDC3210_CFGREG_ADDR     0x0CF8
+#define RDC3210_CFGREG_DATA     0x0CFC
+#define RDC_MAX_GPIO            0x3A
diff --git a/include/asm-x86/timex.h b/include/asm-x86/timex.h
index 39a21ab030f0..27cfd6c599ba 100644
--- a/include/asm-x86/timex.h
+++ b/include/asm-x86/timex.h
@@ -7,6 +7,8 @@
 
 #ifdef CONFIG_X86_ELAN
 #  define PIT_TICK_RATE 1189200 /* AMD Elan has different frequency! */
+#elif defined(CONFIG_X86_RDC321X)
+#  define PIT_TICK_RATE 1041667 /* Underlying HZ for R8610 */
 #else
 #  define PIT_TICK_RATE 1193182 /* Underlying HZ */
 #endif