diff options
Diffstat (limited to 'drivers/pcmcia')
-rw-r--r-- | drivers/pcmcia/Kconfig | 2 | ||||
-rw-r--r-- | drivers/pcmcia/Makefile | 1 | ||||
-rw-r--r-- | drivers/pcmcia/pxa2xx_stargate2.c | 174 |
3 files changed, 176 insertions, 1 deletions
diff --git a/drivers/pcmcia/Kconfig b/drivers/pcmcia/Kconfig index 276473543982..fbf965b31c14 100644 --- a/drivers/pcmcia/Kconfig +++ b/drivers/pcmcia/Kconfig | |||
@@ -217,7 +217,7 @@ config PCMCIA_PXA2XX | |||
217 | depends on ARM && ARCH_PXA && PCMCIA | 217 | depends on ARM && ARCH_PXA && PCMCIA |
218 | depends on (ARCH_LUBBOCK || MACH_MAINSTONE || PXA_SHARPSL \ | 218 | depends on (ARCH_LUBBOCK || MACH_MAINSTONE || PXA_SHARPSL \ |
219 | || MACH_ARMCORE || ARCH_PXA_PALM || TRIZEPS_PCMCIA \ | 219 | || MACH_ARMCORE || ARCH_PXA_PALM || TRIZEPS_PCMCIA \ |
220 | || ARCH_VIPER || ARCH_PXA_ESERIES) | 220 | || ARCH_VIPER || ARCH_PXA_ESERIES || MACH_STARGATE2) |
221 | help | 221 | help |
222 | Say Y here to include support for the PXA2xx PCMCIA controller | 222 | Say Y here to include support for the PXA2xx PCMCIA controller |
223 | 223 | ||
diff --git a/drivers/pcmcia/Makefile b/drivers/pcmcia/Makefile index bbac46327227..047394d98ac2 100644 --- a/drivers/pcmcia/Makefile +++ b/drivers/pcmcia/Makefile | |||
@@ -73,5 +73,6 @@ pxa2xx-obj-$(CONFIG_TRIZEPS_PCMCIA) += pxa2xx_trizeps4.o | |||
73 | pxa2xx-obj-$(CONFIG_MACH_PALMTX) += pxa2xx_palmtx.o | 73 | pxa2xx-obj-$(CONFIG_MACH_PALMTX) += pxa2xx_palmtx.o |
74 | pxa2xx-obj-$(CONFIG_MACH_PALMLD) += pxa2xx_palmld.o | 74 | pxa2xx-obj-$(CONFIG_MACH_PALMLD) += pxa2xx_palmld.o |
75 | pxa2xx-obj-$(CONFIG_MACH_E740) += pxa2xx_e740.o | 75 | pxa2xx-obj-$(CONFIG_MACH_E740) += pxa2xx_e740.o |
76 | pxa2xx-obj-$(CONFIG_MACH_STARGATE2) += pxa2xx_stargate2.o | ||
76 | 77 | ||
77 | obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_core.o $(pxa2xx-obj-y) | 78 | obj-$(CONFIG_PCMCIA_PXA2XX) += pxa2xx_core.o $(pxa2xx-obj-y) |
diff --git a/drivers/pcmcia/pxa2xx_stargate2.c b/drivers/pcmcia/pxa2xx_stargate2.c new file mode 100644 index 000000000000..490749ea677f --- /dev/null +++ b/drivers/pcmcia/pxa2xx_stargate2.c | |||
@@ -0,0 +1,174 @@ | |||
1 | /* | ||
2 | * linux/drivers/pcmcia/pxa2xx_stargate2.c | ||
3 | * | ||
4 | * Stargate 2 PCMCIA specific routines. | ||
5 | * | ||
6 | * Created: December 6, 2005 | ||
7 | * Author: Ed C. Epp | ||
8 | * Copyright: Intel Corp 2005 | ||
9 | * Jonathan Cameron <jic23@cam.ac.uk> 2009 | ||
10 | * | ||
11 | * This program is free software; you can redistribute it and/or modify | ||
12 | * it under the terms of the GNU General Public License version 2 as | ||
13 | * published by the Free Software Foundation. | ||
14 | */ | ||
15 | |||
16 | #include <linux/module.h> | ||
17 | #include <linux/init.h> | ||
18 | #include <linux/kernel.h> | ||
19 | #include <linux/interrupt.h> | ||
20 | #include <linux/delay.h> | ||
21 | #include <linux/platform_device.h> | ||
22 | #include <linux/gpio.h> | ||
23 | |||
24 | #include <pcmcia/ss.h> | ||
25 | |||
26 | #include <asm/irq.h> | ||
27 | #include <asm/mach-types.h> | ||
28 | |||
29 | #include "soc_common.h" | ||
30 | |||
31 | #define SG2_S0_BUFF_CTL 120 | ||
32 | #define SG2_S0_POWER_CTL 108 | ||
33 | #define SG2_S0_GPIO_RESET 82 | ||
34 | #define SG2_S0_GPIO_DETECT 53 | ||
35 | #define SG2_S0_GPIO_READY 81 | ||
36 | |||
37 | static struct pcmcia_irqs irqs[] = { | ||
38 | { 0, IRQ_GPIO(SG2_S0_GPIO_DETECT), "PCMCIA0 CD" }, | ||
39 | }; | ||
40 | |||
41 | static int sg2_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | ||
42 | { | ||
43 | skt->irq = IRQ_GPIO(SG2_S0_GPIO_READY); | ||
44 | return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); | ||
45 | } | ||
46 | |||
47 | static void sg2_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | ||
48 | { | ||
49 | soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); | ||
50 | } | ||
51 | |||
52 | static void sg2_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | ||
53 | struct pcmcia_state *state) | ||
54 | { | ||
55 | state->detect = !gpio_get_value(SG2_S0_GPIO_DETECT); | ||
56 | state->ready = !!gpio_get_value(SG2_S0_GPIO_READY); | ||
57 | state->bvd1 = 0; /* not available - battery detect on card */ | ||
58 | state->bvd2 = 0; /* not available */ | ||
59 | state->vs_3v = 1; /* not available - voltage detect for card */ | ||
60 | state->vs_Xv = 0; /* not available */ | ||
61 | state->wrprot = 0; /* not available - write protect */ | ||
62 | } | ||
63 | |||
64 | static int sg2_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | ||
65 | const socket_state_t *state) | ||
66 | { | ||
67 | /* Enable card power */ | ||
68 | switch (state->Vcc) { | ||
69 | case 0: | ||
70 | /* sets power ctl register high */ | ||
71 | gpio_set_value(SG2_S0_POWER_CTL, 1); | ||
72 | break; | ||
73 | case 33: | ||
74 | case 50: | ||
75 | /* sets power control register low (clear) */ | ||
76 | gpio_set_value(SG2_S0_POWER_CTL, 0); | ||
77 | msleep(100); | ||
78 | break; | ||
79 | default: | ||
80 | pr_err("%s(): bad Vcc %u\n", | ||
81 | __func__, state->Vcc); | ||
82 | return -1; | ||
83 | } | ||
84 | |||
85 | /* reset */ | ||
86 | gpio_set_value(SG2_S0_GPIO_RESET, !!(state->flags & SS_RESET)); | ||
87 | |||
88 | return 0; | ||
89 | } | ||
90 | |||
91 | static void sg2_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | ||
92 | { | ||
93 | soc_pcmcia_enable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | ||
94 | } | ||
95 | |||
96 | static void sg2_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | ||
97 | { | ||
98 | soc_pcmcia_disable_irqs(skt, irqs, ARRAY_SIZE(irqs)); | ||
99 | } | ||
100 | |||
101 | static struct pcmcia_low_level sg2_pcmcia_ops __initdata = { | ||
102 | .owner = THIS_MODULE, | ||
103 | .hw_init = sg2_pcmcia_hw_init, | ||
104 | .hw_shutdown = sg2_pcmcia_hw_shutdown, | ||
105 | .socket_state = sg2_pcmcia_socket_state, | ||
106 | .configure_socket = sg2_pcmcia_configure_socket, | ||
107 | .socket_init = sg2_pcmcia_socket_init, | ||
108 | .socket_suspend = sg2_pcmcia_socket_suspend, | ||
109 | .nr = 1, | ||
110 | }; | ||
111 | |||
112 | static struct platform_device *sg2_pcmcia_device; | ||
113 | |||
114 | static int __init sg2_pcmcia_init(void) | ||
115 | { | ||
116 | int ret; | ||
117 | |||
118 | if (!machine_is_stargate2()) | ||
119 | return -ENODEV; | ||
120 | |||
121 | sg2_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | ||
122 | if (!sg2_pcmcia_device) | ||
123 | return -ENOMEM; | ||
124 | |||
125 | ret = gpio_request(SG2_S0_BUFF_CTL, "SG2 CF buff ctl"); | ||
126 | if (ret) | ||
127 | goto error_put_platform_device; | ||
128 | ret = gpio_request(SG2_S0_POWER_CTL, "SG2 CF power ctl"); | ||
129 | if (ret) | ||
130 | goto error_free_gpio_buff_ctl; | ||
131 | ret = gpio_request(SG2_S0_GPIO_RESET, "SG2 CF reset"); | ||
132 | if (ret) | ||
133 | goto error_free_gpio_power_ctl; | ||
134 | /* Set gpio directions */ | ||
135 | gpio_direction_output(SG2_S0_BUFF_CTL, 0); | ||
136 | gpio_direction_output(SG2_S0_POWER_CTL, 1); | ||
137 | gpio_direction_output(SG2_S0_GPIO_RESET, 1); | ||
138 | |||
139 | ret = platform_device_add_data(sg2_pcmcia_device, | ||
140 | &sg2_pcmcia_ops, | ||
141 | sizeof(sg2_pcmcia_ops)); | ||
142 | if (ret) | ||
143 | goto error_free_gpio_reset; | ||
144 | |||
145 | ret = platform_device_add(sg2_pcmcia_device); | ||
146 | if (ret) | ||
147 | goto error_free_gpio_reset; | ||
148 | |||
149 | return 0; | ||
150 | error_free_gpio_reset: | ||
151 | gpio_free(SG2_S0_GPIO_RESET); | ||
152 | error_free_gpio_power_ctl: | ||
153 | gpio_free(SG2_S0_POWER_CTL); | ||
154 | error_free_gpio_buff_ctl: | ||
155 | gpio_free(SG2_S0_BUFF_CTL); | ||
156 | error_put_platform_device: | ||
157 | platform_device_put(sg2_pcmcia_device); | ||
158 | |||
159 | return ret; | ||
160 | } | ||
161 | |||
162 | static void __exit sg2_pcmcia_exit(void) | ||
163 | { | ||
164 | platform_device_unregister(sg2_pcmcia_device); | ||
165 | gpio_free(SG2_S0_BUFF_CTL); | ||
166 | gpio_free(SG2_S0_POWER_CTL); | ||
167 | gpio_free(SG2_S0_GPIO_RESET); | ||
168 | } | ||
169 | |||
170 | fs_initcall(sg2_pcmcia_init); | ||
171 | module_exit(sg2_pcmcia_exit); | ||
172 | |||
173 | MODULE_LICENSE("GPL"); | ||
174 | MODULE_ALIAS("platform:pxa2xx-pcmcia"); | ||