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[ARM] 4948/1: magician: use htc-egpio to drive the GPIO/IRQ expander CPLD

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needed for power management (audio, BT, charging, GSM, LCD, SD), GSM, flash and SD operation and audio routing.

Signed-off-by: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Philipp Zabel
2008-04-09 19:22:57 +01:00
committed by Russell King
parent a1635b8fe5
commit 70e357f842
4 changed files with 115 additions and 2 deletions
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60
arch/arm/mach-pxa/magician.c
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@@ -18,6 +18,7 @@
#include <linux/platform_device.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/mfd/htc-egpio.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/map.h>
#include <linux/mtd/physmap.h>
@@ -84,6 +85,62 @@ static struct platform_device gpio_keys = {
.id = -1,
};
/*
* EGPIO (Xilinx CPLD)
*
* 7 32-bit aligned 8-bit registers: 3x output, 1x irq, 3x input
*/
static struct resource egpio_resources[] = {
[0] = {
.start = PXA_CS3_PHYS,
.end = PXA_CS3_PHYS + 0x20,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = gpio_to_irq(GPIO13_MAGICIAN_CPLD_IRQ),
.end = gpio_to_irq(GPIO13_MAGICIAN_CPLD_IRQ),
.flags = IORESOURCE_IRQ,
},
};
static struct htc_egpio_chip egpio_chips[] = {
[0] = {
.reg_start = 0,
.gpio_base = MAGICIAN_EGPIO(0, 0),
.num_gpios = 24,
.direction = HTC_EGPIO_OUTPUT,
.initial_values = 0x40, /* EGPIO_MAGICIAN_GSM_RESET */
},
[1] = {
.reg_start = 4,
.gpio_base = MAGICIAN_EGPIO(4, 0),
.num_gpios = 24,
.direction = HTC_EGPIO_INPUT,
},
};
static struct htc_egpio_platform_data egpio_info = {
.reg_width = 8,
.bus_width = 32,
.irq_base = IRQ_BOARD_START,
.num_irqs = 4,
.ack_register = 3,
.chip = egpio_chips,
.num_chips = ARRAY_SIZE(egpio_chips),
};
static struct platform_device egpio = {
.name = "htc-egpio",
.id = -1,
.resource = egpio_resources,
.num_resources = ARRAY_SIZE(egpio_resources),
.dev = {
.platform_data = &egpio_info,
},
};
/*
* LCD - Toppoly TD028STEB1
*/
@@ -182,8 +239,8 @@ static struct physmap_flash_data strataflash_data = {
static struct platform_device strataflash = {
.name = "physmap-flash",
.id = -1,
.num_resources = 1,
.resource = &strataflash_resource,
.num_resources = 1,
.dev = {
.platform_data = &strataflash_data,
},
@@ -195,6 +252,7 @@ static struct platform_device strataflash = {
static struct platform_device *devices[] __initdata = {
&gpio_keys,
&egpio,
&backlight,
&strataflash,
};