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authorJaya Kumar <jayakumar.lkml@gmail.com>2008-08-15 23:07:18 -0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-08-26 12:01:27 -0400
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 c0092472fa58..d8962a0fb98d 100644
--- a/arch/arm/mach-pxa/gumstix.c
+++ b/arch/arm/mach-pxa/gumstix.c
@@ -20,8 +20,12 @@
20#include <linux/init.h> 20#include <linux/init.h>
21#include <linux/platform_device.h> 21#include <linux/platform_device.h>
22#include <linux/interrupt.h> 22#include <linux/interrupt.h>
23#include <linux/delay.h>
23#include <linux/mtd/mtd.h> 24#include <linux/mtd/mtd.h>
24#include <linux/mtd/partitions.h> 25#include <linux/mtd/partitions.h>
26#include <linux/gpio.h>
27#include <linux/err.h>
28#include <linux/clk.h>
25 29
26#include <asm/setup.h> 30#include <asm/setup.h>
27#include <asm/memory.h> 31#include <asm/memory.h>
@@ -40,7 +44,7 @@
40 44
41#include <mach/pxa-regs.h> 45#include <mach/pxa-regs.h>
42#include <mach/pxa2xx-regs.h> 46#include <mach/pxa2xx-regs.h>
43#include <mach/pxa2xx-gpio.h> 47#include <mach/mfp-pxa25x.h>
44 48
45#include "generic.h" 49#include "generic.h"
46 50
@@ -85,21 +89,8 @@ static struct platform_device *devices[] __initdata = {
85}; 89};
86 90
87#ifdef CONFIG_MMC_PXA 91#ifdef CONFIG_MMC_PXA
88static struct pxamci_platform_data gumstix_mci_platform_data;
89
90static int gumstix_mci_init(struct device *dev, irq_handler_t detect_int,
91 void *data)
92{
93 pxa_gpio_mode(GPIO6_MMCCLK_MD);
94 pxa_gpio_mode(GPIO53_MMCCLK_MD);
95 pxa_gpio_mode(GPIO8_MMCCS0_MD);
96
97 return 0;
98}
99
100static struct pxamci_platform_data gumstix_mci_platform_data = { 92static struct pxamci_platform_data gumstix_mci_platform_data = {
101 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, 93 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
102 .init = gumstix_mci_init,
103}; 94};
104 95
105static void __init gumstix_mmc_init(void) 96static void __init gumstix_mmc_init(void)
@@ -109,11 +100,11 @@ static void __init gumstix_mmc_init(void)
109#else 100#else
110static void __init gumstix_mmc_init(void) 101static void __init gumstix_mmc_init(void)
111{ 102{
112 printk(KERN_INFO "Gumstix mmc disabled\n"); 103 pr_debug("Gumstix mmc disabled\n");
113} 104}
114#endif 105#endif
115 106
116#ifdef CONFIG_USB_GADGET_PXA2XX 107#ifdef CONFIG_USB_GADGET_PXA25X
117static struct pxa2xx_udc_mach_info gumstix_udc_info __initdata = { 108static struct pxa2xx_udc_mach_info gumstix_udc_info __initdata = {
118 .gpio_vbus = GPIO_GUMSTIX_USB_GPIOn, 109 .gpio_vbus = GPIO_GUMSTIX_USB_GPIOn,
119 .gpio_pullup = GPIO_GUMSTIX_USB_GPIOx, 110 .gpio_pullup = GPIO_GUMSTIX_USB_GPIOx,
@@ -126,12 +117,87 @@ static void __init gumstix_udc_init(void)
126#else 117#else
127static void gumstix_udc_init(void) 118static void gumstix_udc_init(void)
128{ 119{
129 printk(KERN_INFO "Gumstix udc is disabled\n"); 120 pr_debug("Gumstix udc is disabled\n");
130} 121}
131#endif 122#endif
132 123
124#ifdef CONFIG_BT
125/* Normally, the bootloader would have enabled this 32kHz clock but many
126** boards still have u-boot 1.1.4 so we check if it has been turned on and
127** if not, we turn it on with a warning message. */
128static void gumstix_setup_bt_clock(void)
129{
130 int timeout = 500;
131
132 if (!(OSCC & OSCC_OOK))
133 pr_warning("32kHz clock was not on. Bootloader may need to "
134 "be updated\n");
135 else
136 return;
137
138 OSCC |= OSCC_OON;
139 do {
140 if (OSCC & OSCC_OOK)
141 break;
142 udelay(1);
143 } while (--timeout);
144 if (!timeout)
145 pr_err("Failed to start 32kHz clock\n");
146}
147
148static void __init gumstix_bluetooth_init(void)
149{
150 int err;
151
152 gumstix_setup_bt_clock();
153
154 err = gpio_request(GPIO_GUMSTIX_BTRESET, "BTRST");
155 if (err) {
156 pr_err("gumstix: failed request gpio for bluetooth reset\n");
157 return;
158 }
159
160 err = gpio_direction_output(GPIO_GUMSTIX_BTRESET, 1);
161 if (err) {
162 pr_err("gumstix: can't reset bluetooth\n");
163 return;
164 }
165 gpio_set_value(GPIO_GUMSTIX_BTRESET, 0);
166 udelay(100);
167 gpio_set_value(GPIO_GUMSTIX_BTRESET, 1);
168}
169#else
170static void gumstix_bluetooth_init(void)
171{
172 pr_debug("Gumstix Bluetooth is disabled\n");
173}
174#endif
175
176static unsigned long gumstix_pin_config[] __initdata = {
177 GPIO12_32KHz,
178 /* BTUART */
179 GPIO42_HWUART_RXD,
180 GPIO43_HWUART_TXD,
181 GPIO44_HWUART_CTS,
182 GPIO45_HWUART_RTS,
183 /* MMC */
184 GPIO6_MMC_CLK,
185 GPIO53_MMC_CLK,
186 GPIO8_MMC_CS0,
187 /* these are used by AM200EPD */
188 GPIO51_GPIO,
189 GPIO49_GPIO,
190 GPIO48_GPIO,
191 GPIO32_GPIO,
192 GPIO17_GPIO,
193 GPIO16_GPIO,
194};
195
133static void __init gumstix_init(void) 196static void __init gumstix_init(void)
134{ 197{
198 pxa2xx_mfp_config(ARRAY_AND_SIZE(gumstix_pin_config));
199
200 gumstix_bluetooth_init();
135 gumstix_udc_init(); 201 gumstix_udc_init();
136 gumstix_mmc_init(); 202 gumstix_mmc_init();
137 (void) platform_add_devices(devices, ARRAY_SIZE(devices)); 203 (void) platform_add_devices(devices, ARRAY_SIZE(devices));