ARM: 5813/1: SA1100: h3100/h3600: add htc-egpio driver

It will be used for future conversion of assign_h3600_egpio calls to
gpiolib.

Signed-off-by: Dmitry Artamonow <mad_soft@inbox.ru>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

2 files changed, 69 insertions, 0 deletions

diff --git a/arch/arm/mach-sa1100/h3600.c b/arch/arm/mach-sa1100/h3600.c
index 1297c11c030a..429fdb051a35 100644
--- a/arch/arm/mach-sa1100/h3600.c
+++ b/arch/arm/mach-sa1100/h3600.c
@@ -25,10 +25,12 @@
 #include <linux/tty.h>
 #include <linux/pm.h>
 #include <linux/device.h>
+#include <linux/mfd/htc-egpio.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 #include <linux/serial_core.h>
 #include <linux/gpio.h>
+#include <linux/platform_device.h>
 
 #include <asm/irq.h>
 #include <mach/hardware.h>
@@ -184,11 +186,54 @@ static struct sa1100_port_fns h3xxx_port_fns __initdata = {
         .set_wake       = h3xxx_uart_set_wake,
 };
 
+/*
+ * EGPIO
+ */
+
+static struct resource egpio_resources[] = {
+        [0] = {
+                .start  = H3600_EGPIO_PHYS,
+                .end    = H3600_EGPIO_PHYS + 0x4 - 1,
+                .flags  = IORESOURCE_MEM,
+        },
+};
+
+static struct htc_egpio_chip egpio_chips[] = {
+        [0] = {
+                .reg_start      = 0,
+                .gpio_base      = H3XXX_EGPIO_BASE,
+                .num_gpios      = 16,
+                .direction      = HTC_EGPIO_OUTPUT,
+                .initial_values = 0x0080, /* H3XXX_EGPIO_RS232_ON */
+        },
+};
+
+static struct htc_egpio_platform_data egpio_info = {
+        .reg_width      = 16,
+        .bus_width      = 16,
+        .chip           = egpio_chips,
+        .num_chips      = ARRAY_SIZE(egpio_chips),
+};
+
+static struct platform_device h3xxx_egpio = {
+        .name           = "htc-egpio",
+        .id             = -1,
+        .resource       = egpio_resources,
+        .num_resources  = ARRAY_SIZE(egpio_resources),
+        .dev            = {
+                .platform_data = &egpio_info,
+        },
+};
+
+static struct platform_device *h3xxx_devices[] = {
+        &h3xxx_egpio,
+};
 
 static void __init h3xxx_mach_init(void)
 {
         sa1100_register_uart_fns(&h3xxx_port_fns);
         sa11x0_register_mtd(&h3xxx_flash_data, &h3xxx_flash_resource, 1);
+        platform_add_devices(h3xxx_devices, ARRAY_SIZE(h3xxx_devices));
 }
 
 static struct map_desc h3600_io_desc[] __initdata = {
diff --git a/arch/arm/mach-sa1100/include/mach/h3600_gpio.h b/arch/arm/mach-sa1100/include/mach/h3600_gpio.h
index 18de674af560..ce80f1ae0c1a 100644
--- a/arch/arm/mach-sa1100/include/mach/h3600_gpio.h
+++ b/arch/arm/mach-sa1100/include/mach/h3600_gpio.h
@@ -97,4 +97,28 @@
 #define EGPIO_H3600_LVDD_ON             (1 << 15)  /* enable 9V and -6.5V to LCD. */
 
 
+/* gpiolib versions of EGPIOs */
+
+/* H3100 / 3600 EGPIO pins */
+#define H3XXX_EGPIO_BASE                (GPIO_MAX + 1)
+
+#define H3XXX_EGPIO_VPP_ON              (H3XXX_EGPIO_BASE + 0)
+#define H3XXX_EGPIO_CARD_RESET          (H3XXX_EGPIO_BASE + 1) /* reset the attached pcmcia/compactflash card.  active high. */
+#define H3XXX_EGPIO_OPT_RESET           (H3XXX_EGPIO_BASE + 2) /* reset the attached option pack.  active high. */
+#define H3XXX_EGPIO_CODEC_NRESET        (H3XXX_EGPIO_BASE + 3) /* reset the onboard UDA1341.  active low. */
+#define H3XXX_EGPIO_OPT_NVRAM_ON        (H3XXX_EGPIO_BASE + 4) /* apply power to optionpack nvram, active high. */
+#define H3XXX_EGPIO_OPT_ON              (H3XXX_EGPIO_BASE + 5) /* full power to option pack.  active high. */
+#define H3XXX_EGPIO_LCD_ON              (H3XXX_EGPIO_BASE + 6) /* enable 3.3V to LCD.  active high. */
+#define H3XXX_EGPIO_RS232_ON            (H3XXX_EGPIO_BASE + 7) /* UART3 transceiver force on.  Active high. */
+
+/* H3600 only EGPIO pins */
+#define H3600_EGPIO_LCD_PCI             (H3XXX_EGPIO_BASE + 8) /* LCD control IC enable.  active high. */
+#define H3600_EGPIO_IR_ON               (H3XXX_EGPIO_BASE + 9) /* apply power to IR module.  active high. */
+#define H3600_EGPIO_AUD_AMP_ON          (H3XXX_EGPIO_BASE + 10) /* apply power to audio power amp.  active high. */
+#define H3600_EGPIO_AUD_PWR_ON          (H3XXX_EGPIO_BASE + 11) /* apply power to reset of audio circuit.  active high. */
+#define H3600_EGPIO_QMUTE               (H3XXX_EGPIO_BASE + 12) /* mute control for onboard UDA1341.  active high. */
+#define H3600_EGPIO_IR_FSEL             (H3XXX_EGPIO_BASE + 13) /* IR speed select: 1->fast, 0->slow */
+#define H3600_EGPIO_LCD_5V_ON           (H3XXX_EGPIO_BASE + 14) /* enable 5V to LCD. active high. */
+#define H3600_EGPIO_LVDD_ON             (H3XXX_EGPIO_BASE + 15) /* enable 9V and -6.5V to LCD. */
+
 #endif /* _INCLUDE_H3600_GPIO_H_ */