Commit | Line | Data |
---|---|---|
d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
90b8fc34 JK |
2 | /* |
3 | * linux/arch/arm/mach-pxa/gumstix.c | |
4 | * | |
5 | * Support for the Gumstix motherboards. | |
6 | * | |
7 | * Original Author: Craig Hughes | |
8 | * Created: Feb 14, 2008 | |
9 | * Copyright: Craig Hughes | |
10 | * | |
90b8fc34 JK |
11 | * Implemented based on lubbock.c by Nicolas Pitre and code from Craig |
12 | * Hughes | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/platform_device.h> | |
19 | #include <linux/interrupt.h> | |
d8ad7859 | 20 | #include <linux/delay.h> |
90b8fc34 JK |
21 | #include <linux/mtd/mtd.h> |
22 | #include <linux/mtd/partitions.h> | |
d8ad7859 JK |
23 | #include <linux/gpio.h> |
24 | #include <linux/err.h> | |
25 | #include <linux/clk.h> | |
d19f4cbd | 26 | #include <linux/usb/gpio_vbus.h> |
90b8fc34 JK |
27 | |
28 | #include <asm/setup.h> | |
29 | #include <asm/memory.h> | |
30 | #include <asm/mach-types.h> | |
a09e64fb | 31 | #include <mach/hardware.h> |
90b8fc34 | 32 | #include <asm/irq.h> |
87dfb311 | 33 | #include <linux/sizes.h> |
90b8fc34 JK |
34 | |
35 | #include <asm/mach/arch.h> | |
36 | #include <asm/mach/map.h> | |
37 | #include <asm/mach/irq.h> | |
38 | #include <asm/mach/flash.h> | |
51c62982 | 39 | |
4c25c5d2 | 40 | #include "pxa25x.h" |
293b2da1 | 41 | #include <linux/platform_data/mmc-pxamci.h> |
4c25c5d2 AB |
42 | #include "udc.h" |
43 | #include "gumstix.h" | |
90b8fc34 | 44 | |
90b8fc34 JK |
45 | #include "generic.h" |
46 | ||
47 | static struct resource flash_resource = { | |
48 | .start = 0x00000000, | |
49 | .end = SZ_64M - 1, | |
50 | .flags = IORESOURCE_MEM, | |
51 | }; | |
52 | ||
53 | static struct mtd_partition gumstix_partitions[] = { | |
54 | { | |
55 | .name = "Bootloader", | |
56 | .size = 0x00040000, | |
57 | .offset = 0, | |
58 | .mask_flags = MTD_WRITEABLE /* force read-only */ | |
59 | } , { | |
60 | .name = "rootfs", | |
61 | .size = MTDPART_SIZ_FULL, | |
62 | .offset = MTDPART_OFS_APPEND | |
63 | } | |
64 | }; | |
65 | ||
66 | static struct flash_platform_data gumstix_flash_data = { | |
67 | .map_name = "cfi_probe", | |
68 | .parts = gumstix_partitions, | |
69 | .nr_parts = ARRAY_SIZE(gumstix_partitions), | |
70 | .width = 2, | |
71 | }; | |
72 | ||
73 | static struct platform_device gumstix_flash_device = { | |
74 | .name = "pxa2xx-flash", | |
75 | .id = 0, | |
76 | .dev = { | |
77 | .platform_data = &gumstix_flash_data, | |
78 | }, | |
79 | .resource = &flash_resource, | |
80 | .num_resources = 1, | |
81 | }; | |
82 | ||
83 | static struct platform_device *devices[] __initdata = { | |
84 | &gumstix_flash_device, | |
85 | }; | |
86 | ||
87 | #ifdef CONFIG_MMC_PXA | |
90b8fc34 | 88 | static struct pxamci_platform_data gumstix_mci_platform_data = { |
7a648256 | 89 | .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34, |
90b8fc34 JK |
90 | }; |
91 | ||
92 | static void __init gumstix_mmc_init(void) | |
93 | { | |
94 | pxa_set_mci_info(&gumstix_mci_platform_data); | |
95 | } | |
96 | #else | |
97 | static void __init gumstix_mmc_init(void) | |
98 | { | |
d8ad7859 | 99 | pr_debug("Gumstix mmc disabled\n"); |
90b8fc34 JK |
100 | } |
101 | #endif | |
102 | ||
c0a39151 | 103 | #ifdef CONFIG_USB_PXA25X |
d19f4cbd | 104 | static struct gpio_vbus_mach_info gumstix_udc_info = { |
90b8fc34 JK |
105 | .gpio_vbus = GPIO_GUMSTIX_USB_GPIOn, |
106 | .gpio_pullup = GPIO_GUMSTIX_USB_GPIOx, | |
107 | }; | |
108 | ||
d19f4cbd DES |
109 | static struct platform_device gumstix_gpio_vbus = { |
110 | .name = "gpio-vbus", | |
111 | .id = -1, | |
112 | .dev = { | |
113 | .platform_data = &gumstix_udc_info, | |
114 | }, | |
115 | }; | |
116 | ||
90b8fc34 JK |
117 | static void __init gumstix_udc_init(void) |
118 | { | |
d19f4cbd | 119 | platform_device_register(&gumstix_gpio_vbus); |
90b8fc34 JK |
120 | } |
121 | #else | |
122 | static void gumstix_udc_init(void) | |
123 | { | |
d8ad7859 | 124 | pr_debug("Gumstix udc is disabled\n"); |
90b8fc34 JK |
125 | } |
126 | #endif | |
127 | ||
d8ad7859 JK |
128 | #ifdef CONFIG_BT |
129 | /* Normally, the bootloader would have enabled this 32kHz clock but many | |
130 | ** boards still have u-boot 1.1.4 so we check if it has been turned on and | |
131 | ** if not, we turn it on with a warning message. */ | |
132 | static void gumstix_setup_bt_clock(void) | |
133 | { | |
134 | int timeout = 500; | |
135 | ||
ea7743e2 | 136 | if (!(readl(OSCC) & OSCC_OOK)) |
7b472ac7 | 137 | pr_warn("32kHz clock was not on. Bootloader may need to be updated\n"); |
d8ad7859 JK |
138 | else |
139 | return; | |
140 | ||
ea7743e2 | 141 | writel(readl(OSCC) | OSCC_OON, OSCC); |
d8ad7859 | 142 | do { |
ea7743e2 | 143 | if (readl(OSCC) & OSCC_OOK) |
d8ad7859 JK |
144 | break; |
145 | udelay(1); | |
146 | } while (--timeout); | |
147 | if (!timeout) | |
148 | pr_err("Failed to start 32kHz clock\n"); | |
149 | } | |
150 | ||
151 | static void __init gumstix_bluetooth_init(void) | |
152 | { | |
153 | int err; | |
154 | ||
155 | gumstix_setup_bt_clock(); | |
156 | ||
157 | err = gpio_request(GPIO_GUMSTIX_BTRESET, "BTRST"); | |
158 | if (err) { | |
159 | pr_err("gumstix: failed request gpio for bluetooth reset\n"); | |
160 | return; | |
161 | } | |
162 | ||
163 | err = gpio_direction_output(GPIO_GUMSTIX_BTRESET, 1); | |
164 | if (err) { | |
165 | pr_err("gumstix: can't reset bluetooth\n"); | |
166 | return; | |
167 | } | |
168 | gpio_set_value(GPIO_GUMSTIX_BTRESET, 0); | |
169 | udelay(100); | |
170 | gpio_set_value(GPIO_GUMSTIX_BTRESET, 1); | |
171 | } | |
172 | #else | |
173 | static void gumstix_bluetooth_init(void) | |
174 | { | |
175 | pr_debug("Gumstix Bluetooth is disabled\n"); | |
176 | } | |
177 | #endif | |
178 | ||
179 | static unsigned long gumstix_pin_config[] __initdata = { | |
180 | GPIO12_32KHz, | |
181 | /* BTUART */ | |
182 | GPIO42_HWUART_RXD, | |
183 | GPIO43_HWUART_TXD, | |
184 | GPIO44_HWUART_CTS, | |
185 | GPIO45_HWUART_RTS, | |
186 | /* MMC */ | |
187 | GPIO6_MMC_CLK, | |
188 | GPIO53_MMC_CLK, | |
189 | GPIO8_MMC_CS0, | |
d8ad7859 JK |
190 | }; |
191 | ||
3332b0c1 JK |
192 | int __attribute__((weak)) am200_init(void) |
193 | { | |
194 | return 0; | |
195 | } | |
196 | ||
4ce255c1 JK |
197 | int __attribute__((weak)) am300_init(void) |
198 | { | |
199 | return 0; | |
200 | } | |
201 | ||
3332b0c1 JK |
202 | static void __init carrier_board_init(void) |
203 | { | |
204 | /* | |
205 | * put carrier/expansion board init here if | |
206 | * they cannot be detected programatically | |
207 | */ | |
208 | am200_init(); | |
4ce255c1 | 209 | am300_init(); |
3332b0c1 JK |
210 | } |
211 | ||
90b8fc34 JK |
212 | static void __init gumstix_init(void) |
213 | { | |
d8ad7859 JK |
214 | pxa2xx_mfp_config(ARRAY_AND_SIZE(gumstix_pin_config)); |
215 | ||
cc155c6f RK |
216 | pxa_set_ffuart_info(NULL); |
217 | pxa_set_btuart_info(NULL); | |
218 | pxa_set_stuart_info(NULL); | |
219 | pxa_set_hwuart_info(NULL); | |
220 | ||
d8ad7859 | 221 | gumstix_bluetooth_init(); |
90b8fc34 JK |
222 | gumstix_udc_init(); |
223 | gumstix_mmc_init(); | |
224 | (void) platform_add_devices(devices, ARRAY_SIZE(devices)); | |
3332b0c1 | 225 | carrier_board_init(); |
90b8fc34 JK |
226 | } |
227 | ||
228 | MACHINE_START(GUMSTIX, "Gumstix") | |
7375aba6 | 229 | .atag_offset = 0x100, /* match u-boot bi_boot_params */ |
851982c1 | 230 | .map_io = pxa25x_map_io, |
4e611091 | 231 | .nr_irqs = PXA_NR_IRQS, |
90b8fc34 | 232 | .init_irq = pxa25x_init_irq, |
8a97ae2f | 233 | .handle_irq = pxa25x_handle_irq, |
6bb27d73 | 234 | .init_time = pxa_timer_init, |
90b8fc34 | 235 | .init_machine = gumstix_init, |
271a74fc | 236 | .restart = pxa_restart, |
90b8fc34 | 237 | MACHINE_END |