Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
8616e2fb MR |
2 | /* |
3 | * linux/drivers/pcmcia/pxa/pxa_cm_x255.c | |
4 | * | |
8616e2fb MR |
5 | * Compulab Ltd., 2003, 2007, 2008 |
6 | * Mike Rapoport <mike@compulab.co.il> | |
8616e2fb MR |
7 | */ |
8 | ||
9 | #include <linux/platform_device.h> | |
10 | #include <linux/irq.h> | |
11 | #include <linux/delay.h> | |
12 | #include <linux/gpio.h> | |
402b20de | 13 | #include <linux/export.h> |
8616e2fb | 14 | |
8616e2fb MR |
15 | #include "soc_common.h" |
16 | ||
17 | #define GPIO_PCMCIA_SKTSEL (54) | |
18 | #define GPIO_PCMCIA_S0_CD_VALID (16) | |
19 | #define GPIO_PCMCIA_S1_CD_VALID (17) | |
20 | #define GPIO_PCMCIA_S0_RDYINT (6) | |
21 | #define GPIO_PCMCIA_S1_RDYINT (8) | |
22 | #define GPIO_PCMCIA_RESET (9) | |
23 | ||
8616e2fb MR |
24 | static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
25 | { | |
26 | int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset"); | |
27 | if (ret) | |
28 | return ret; | |
29 | gpio_direction_output(GPIO_PCMCIA_RESET, 0); | |
30 | ||
a9bb5a4b RK |
31 | if (skt->nr == 0) { |
32 | skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID; | |
33 | skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD"; | |
34 | skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT; | |
35 | skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY"; | |
36 | } else { | |
37 | skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S1_CD_VALID; | |
38 | skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD"; | |
39 | skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S1_RDYINT; | |
40 | skt->stat[SOC_STAT_RDY].name = "PCMCIA1 RDY"; | |
41 | } | |
8616e2fb | 42 | |
a9bb5a4b | 43 | return 0; |
8616e2fb MR |
44 | } |
45 | ||
46 | static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt) | |
47 | { | |
8616e2fb MR |
48 | gpio_free(GPIO_PCMCIA_RESET); |
49 | } | |
50 | ||
51 | ||
52 | static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
53 | struct pcmcia_state *state) | |
54 | { | |
8616e2fb MR |
55 | state->vs_3v = 0; |
56 | state->vs_Xv = 0; | |
8616e2fb MR |
57 | } |
58 | ||
59 | ||
60 | static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
61 | const socket_state_t *state) | |
62 | { | |
63 | switch (skt->nr) { | |
64 | case 0: | |
65 | if (state->flags & SS_RESET) { | |
66 | gpio_set_value(GPIO_PCMCIA_SKTSEL, 0); | |
67 | udelay(1); | |
68 | gpio_set_value(GPIO_PCMCIA_RESET, 1); | |
69 | udelay(10); | |
70 | gpio_set_value(GPIO_PCMCIA_RESET, 0); | |
71 | } | |
72 | break; | |
73 | case 1: | |
74 | if (state->flags & SS_RESET) { | |
75 | gpio_set_value(GPIO_PCMCIA_SKTSEL, 1); | |
76 | udelay(1); | |
77 | gpio_set_value(GPIO_PCMCIA_RESET, 1); | |
78 | udelay(10); | |
79 | gpio_set_value(GPIO_PCMCIA_RESET, 0); | |
80 | } | |
81 | break; | |
82 | } | |
83 | ||
84 | return 0; | |
85 | } | |
86 | ||
8616e2fb MR |
87 | static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = { |
88 | .owner = THIS_MODULE, | |
89 | .hw_init = cmx255_pcmcia_hw_init, | |
90 | .hw_shutdown = cmx255_pcmcia_shutdown, | |
91 | .socket_state = cmx255_pcmcia_socket_state, | |
92 | .configure_socket = cmx255_pcmcia_configure_socket, | |
8616e2fb MR |
93 | .nr = 1, |
94 | }; | |
95 | ||
96 | static struct platform_device *cmx255_pcmcia_device; | |
97 | ||
98 | int __init cmx255_pcmcia_init(void) | |
99 | { | |
100 | int ret; | |
101 | ||
102 | cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
103 | ||
104 | if (!cmx255_pcmcia_device) | |
105 | return -ENOMEM; | |
106 | ||
107 | ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops, | |
108 | sizeof(cmx255_pcmcia_ops)); | |
109 | ||
110 | if (ret == 0) { | |
111 | printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n"); | |
112 | ret = platform_device_add(cmx255_pcmcia_device); | |
113 | } | |
114 | ||
115 | if (ret) | |
116 | platform_device_put(cmx255_pcmcia_device); | |
117 | ||
118 | return ret; | |
119 | } | |
120 | ||
121 | void __exit cmx255_pcmcia_exit(void) | |
122 | { | |
123 | platform_device_unregister(cmx255_pcmcia_device); | |
124 | } |