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

Browse source 
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>
This commit is contained in:
Dmitry Artamonow 2009-11-27 12:00:00 +01:00 committed by Russell King
parent cf5a87d80a
commit 2eec62d7db
2 changed files with 69 additions and 0 deletions
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45
arch/arm/mach-sa1100/h3600.c
View file

@ -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 = {

24
arch/arm/mach-sa1100/include/mach/h3600_gpio.h
View file

@ -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_ */