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authorJaya Kumar <jayakumar.lkml@gmail.com>2008-08-16 04:07:18 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-08-26 17:01:27 +0100
commitd8ad7859e2044ecae26c4810b8a8c3d17afca0ca (patch)
treee12fec121b68e9f13093416b809e4e7edb0bd2b7 /arch/arm/mach-pxa/gumstix.c
parentb8e6c91c74e9f0279b7c51048779b3d62da60b88 (diff)
[ARM] 5197/1: gumstix: conversion to MFP support and add bluetooth support
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>
Diffstat (limited to 'arch/arm/mach-pxa/gumstix.c')
-rw-r--r--arch/arm/mach-pxa/gumstix.c100
1 files changed, 83 insertions, 17 deletions
diff --git a/arch/arm/mach-pxa/gumstix.c b/arch/arm/mach-pxa/gumstix.c
index c0092472fa5..d8962a0fb98 100644
--- a/arch/arm/mach-pxa/gumstix.c
+++ b/arch/arm/mach-pxa/gumstix.c
@@ -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));