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[ARM] 5197/1: gumstix: conversion to MFP support and add bluetooth support

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This patch converts gumstix over to the MFP configuration system and adds
bluetooth support.

Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Jaya Kumar 2008-08-16 04:07:18 +01:00 committed by Russell King
parent b8e6c91c74
commit d8ad7859e2
1 changed files with 83 additions and 17 deletions
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100
arch/arm/mach-pxa/gumstix.c
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@ -20,8 +20,12 @@
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/gpio.h>
#include <linux/err.h>
#include <linux/clk.h>
#include <asm/setup.h>
#include <asm/memory.h>
@ -40,7 +44,7 @@
#include <mach/pxa-regs.h>
#include <mach/pxa2xx-regs.h>
#include <mach/pxa2xx-gpio.h>
#include <mach/mfp-pxa25x.h>
#include "generic.h"
@ -85,21 +89,8 @@ static struct platform_device *devices[] __initdata = {
};
#ifdef CONFIG_MMC_PXA
static struct pxamci_platform_data gumstix_mci_platform_data;
static int gumstix_mci_init(struct device *dev, irq_handler_t detect_int,
void *data)
{
pxa_gpio_mode(GPIO6_MMCCLK_MD);
pxa_gpio_mode(GPIO53_MMCCLK_MD);
pxa_gpio_mode(GPIO8_MMCCS0_MD);
return 0;
}
static struct pxamci_platform_data gumstix_mci_platform_data = {
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.init = gumstix_mci_init,
};
static void __init gumstix_mmc_init(void)
@ -109,11 +100,11 @@ static void __init gumstix_mmc_init(void)
#else
static void __init gumstix_mmc_init(void)
{
printk(KERN_INFO "Gumstix mmc disabled\n");
pr_debug("Gumstix mmc disabled\n");
}
#endif
#ifdef CONFIG_USB_GADGET_PXA2XX
#ifdef CONFIG_USB_GADGET_PXA25X
static struct pxa2xx_udc_mach_info gumstix_udc_info __initdata = {
.gpio_vbus = GPIO_GUMSTIX_USB_GPIOn,
.gpio_pullup = GPIO_GUMSTIX_USB_GPIOx,
@ -126,12 +117,87 @@ static void __init gumstix_udc_init(void)
#else
static void gumstix_udc_init(void)
{
printk(KERN_INFO "Gumstix udc is disabled\n");
pr_debug("Gumstix udc is disabled\n");
}
#endif
#ifdef CONFIG_BT
/* Normally, the bootloader would have enabled this 32kHz clock but many
** boards still have u-boot 1.1.4 so we check if it has been turned on and
** if not, we turn it on with a warning message. */
static void gumstix_setup_bt_clock(void)
{
int timeout = 500;
if (!(OSCC & OSCC_OOK))
pr_warning("32kHz clock was not on. Bootloader may need to "
"be updated\n");
else
return;
OSCC |= OSCC_OON;
do {
if (OSCC & OSCC_OOK)
break;
udelay(1);
} while (--timeout);
if (!timeout)
pr_err("Failed to start 32kHz clock\n");
}
static void __init gumstix_bluetooth_init(void)
{
int err;
gumstix_setup_bt_clock();
err = gpio_request(GPIO_GUMSTIX_BTRESET, "BTRST");
if (err) {
pr_err("gumstix: failed request gpio for bluetooth reset\n");
return;
}
err = gpio_direction_output(GPIO_GUMSTIX_BTRESET, 1);
if (err) {
pr_err("gumstix: can't reset bluetooth\n");
return;
}
gpio_set_value(GPIO_GUMSTIX_BTRESET, 0);
udelay(100);
gpio_set_value(GPIO_GUMSTIX_BTRESET, 1);
}
#else
static void gumstix_bluetooth_init(void)
{
pr_debug("Gumstix Bluetooth is disabled\n");
}
#endif
static unsigned long gumstix_pin_config[] __initdata = {
GPIO12_32KHz,
/* BTUART */
GPIO42_HWUART_RXD,
GPIO43_HWUART_TXD,
GPIO44_HWUART_CTS,
GPIO45_HWUART_RTS,
/* MMC */
GPIO6_MMC_CLK,
GPIO53_MMC_CLK,
GPIO8_MMC_CS0,
/* these are used by AM200EPD */
GPIO51_GPIO,
GPIO49_GPIO,
GPIO48_GPIO,
GPIO32_GPIO,
GPIO17_GPIO,
GPIO16_GPIO,
};
static void __init gumstix_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(gumstix_pin_config));
gumstix_bluetooth_init();
gumstix_udc_init();
gumstix_mmc_init();
(void) platform_add_devices(devices, ARRAY_SIZE(devices));