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

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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/configs/magician_defconfig
View File

@ -712,6 +712,7 @@ CONFIG_SSB_POSSIBLE=y
# Multifunction device drivers
#
# CONFIG_MFD_SM501 is not set
CONFIG_HTC_EGPIO=y
#
# Multimedia devices

60
arch/arm/mach-pxa/magician.c
View File

@ -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,
};

3
include/asm-arm/arch-pxa/irqs.h
View File

@ -181,7 +181,8 @@
#elif defined(CONFIG_ARCH_LUBBOCK) || \
defined(CONFIG_MACH_LOGICPD_PXA270) || \
defined(CONFIG_MACH_MAINSTONE) || \
defined(CONFIG_MACH_PCM027)
defined(CONFIG_MACH_PCM027) || \
defined(CONFIG_MACH_MAGICIAN)
#define NR_IRQS (IRQ_BOARD_END)
#else
#define NR_IRQS (IRQ_BOARD_START)

53
include/asm-arm/arch-pxa/magician.h
View File

@ -12,6 +12,7 @@
#ifndef _MAGICIAN_H_
#define _MAGICIAN_H_
#include <asm/arch/irqs.h>
#include <asm/arch/pxa2xx-gpio.h>
/*
@ -108,4 +109,56 @@
#define GPIO119_MAGICIAN_UNKNOWN_MD (119 | GPIO_OUT)
#define GPIO120_MAGICIAN_UNKNOWN_MD (120 | GPIO_OUT)
/*
* CPLD IRQs
*/
#define IRQ_MAGICIAN_SD (IRQ_BOARD_START + 0)
#define IRQ_MAGICIAN_EP (IRQ_BOARD_START + 1)
#define IRQ_MAGICIAN_BT (IRQ_BOARD_START + 2)
#define IRQ_MAGICIAN_AC (IRQ_BOARD_START + 3)
/*
* CPLD EGPIOs
*/
#define MAGICIAN_EGPIO_BASE 0x80 /* GPIO_BOARD_START */
#define MAGICIAN_EGPIO(reg,bit) \
(MAGICIAN_EGPIO_BASE + 8*reg + bit)
/* output */
#define EGPIO_MAGICIAN_TOPPOLY_POWER MAGICIAN_EGPIO(0, 2)
#define EGPIO_MAGICIAN_LED_POWER MAGICIAN_EGPIO(0, 5)
#define EGPIO_MAGICIAN_GSM_RESET MAGICIAN_EGPIO(0, 6)
#define EGPIO_MAGICIAN_LCD_POWER MAGICIAN_EGPIO(0, 7)
#define EGPIO_MAGICIAN_SPK_POWER MAGICIAN_EGPIO(1, 0)
#define EGPIO_MAGICIAN_EP_POWER MAGICIAN_EGPIO(1, 1)
#define EGPIO_MAGICIAN_IN_SEL0 MAGICIAN_EGPIO(1, 2)
#define EGPIO_MAGICIAN_IN_SEL1 MAGICIAN_EGPIO(1, 3)
#define EGPIO_MAGICIAN_MIC_POWER MAGICIAN_EGPIO(1, 4)
#define EGPIO_MAGICIAN_CODEC_RESET MAGICIAN_EGPIO(1, 5)
#define EGPIO_MAGICIAN_CODEC_POWER MAGICIAN_EGPIO(1, 6)
#define EGPIO_MAGICIAN_BL_POWER MAGICIAN_EGPIO(1, 7)
#define EGPIO_MAGICIAN_SD_POWER MAGICIAN_EGPIO(2, 0)
#define EGPIO_MAGICIAN_CARKIT_MIC MAGICIAN_EGPIO(2, 1)
#define EGPIO_MAGICIAN_UNKNOWN_WAVEDEV_DLL MAGICIAN_EGPIO(2, 2)
#define EGPIO_MAGICIAN_FLASH_VPP MAGICIAN_EGPIO(2, 3)
#define EGPIO_MAGICIAN_BL_POWER2 MAGICIAN_EGPIO(2, 4)
#define EGPIO_MAGICIAN_CHARGE_EN MAGICIAN_EGPIO(2, 5)
#define EGPIO_MAGICIAN_GSM_POWER MAGICIAN_EGPIO(2, 7)
/* input */
#define EGPIO_MAGICIAN_CABLE_STATE_AC MAGICIAN_EGPIO(4, 0)
#define EGPIO_MAGICIAN_CABLE_STATE_USB MAGICIAN_EGPIO(4, 1)
#define EGPIO_MAGICIAN_BOARD_ID0 MAGICIAN_EGPIO(5, 0)
#define EGPIO_MAGICIAN_BOARD_ID1 MAGICIAN_EGPIO(5, 1)
#define EGPIO_MAGICIAN_BOARD_ID2 MAGICIAN_EGPIO(5, 2)
#define EGPIO_MAGICIAN_LCD_SELECT MAGICIAN_EGPIO(5, 3)
#define EGPIO_MAGICIAN_nSD_READONLY MAGICIAN_EGPIO(5, 4)
#define EGPIO_MAGICIAN_EP_INSERT MAGICIAN_EGPIO(6, 1)
#endif /* _MAGICIAN_H_ */