projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 8616e2fb MR |
1 | /* |
| 2 | * linux/drivers/pcmcia/pxa/pxa_cm_x255.c | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License version 2 as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * Compulab Ltd., 2003, 2007, 2008 | |
| 9 | * Mike Rapoport <[email protected]> | |
| 10 | * | |
| 11 | */ | |
| 12 | ||
| 13 | #include <linux/platform_device.h> | |
| 14 | #include <linux/irq.h> | |
| 15 | #include <linux/delay.h> | |
| 16 | #include <linux/gpio.h> | |
| 402b20de | 17 | #include <linux/export.h> |
| 8616e2fb | 18 | |
| 8616e2fb MR |
19 | #include "soc_common.h" |
| 20 | ||
| 21 | #define GPIO_PCMCIA_SKTSEL (54) | |
| 22 | #define GPIO_PCMCIA_S0_CD_VALID (16) | |
| 23 | #define GPIO_PCMCIA_S1_CD_VALID (17) | |
| 24 | #define GPIO_PCMCIA_S0_RDYINT (6) | |
| 25 | #define GPIO_PCMCIA_S1_RDYINT (8) | |
| 26 | #define GPIO_PCMCIA_RESET (9) | |
| 27 | ||
| 8616e2fb MR |
28 | static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
| 29 | { | |
| 30 | int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset"); | |
| 31 | if (ret) | |
| 32 | return ret; | |
| 33 | gpio_direction_output(GPIO_PCMCIA_RESET, 0); | |
| 34 | ||
| a9bb5a4b RK |
35 | if (skt->nr == 0) { |
| 36 | skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S0_CD_VALID; | |
| 37 | skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD"; | |
| 38 | skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S0_RDYINT; | |
| 39 | skt->stat[SOC_STAT_RDY].name = "PCMCIA0 RDY"; | |
| 40 | } else { | |
| 41 | skt->stat[SOC_STAT_CD].gpio = GPIO_PCMCIA_S1_CD_VALID; | |
| 42 | skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD"; | |
| 43 | skt->stat[SOC_STAT_RDY].gpio = GPIO_PCMCIA_S1_RDYINT; | |
| 44 | skt->stat[SOC_STAT_RDY].name = "PCMCIA1 RDY"; | |
| 45 | } | |
| 8616e2fb | 46 | |
| a9bb5a4b | 47 | return 0; |
| 8616e2fb MR |
48 | } |
| 49 | ||
| 50 | static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt) | |
| 51 | { | |
| 8616e2fb MR |
52 | gpio_free(GPIO_PCMCIA_RESET); |
| 53 | } | |
| 54 | ||
| 55 | ||
| 56 | static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
| 57 | struct pcmcia_state *state) | |
| 58 | { | |
| 8616e2fb MR |
59 | state->vs_3v = 0; |
| 60 | state->vs_Xv = 0; | |
| 8616e2fb MR |
61 | } |
| 62 | ||
| 63 | ||
| 64 | static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
| 65 | const socket_state_t *state) | |
| 66 | { | |
| 67 | switch (skt->nr) { | |
| 68 | case 0: | |
| 69 | if (state->flags & SS_RESET) { | |
| 70 | gpio_set_value(GPIO_PCMCIA_SKTSEL, 0); | |
| 71 | udelay(1); | |
| 72 | gpio_set_value(GPIO_PCMCIA_RESET, 1); | |
| 73 | udelay(10); | |
| 74 | gpio_set_value(GPIO_PCMCIA_RESET, 0); | |
| 75 | } | |
| 76 | break; | |
| 77 | case 1: | |
| 78 | if (state->flags & SS_RESET) { | |
| 79 | gpio_set_value(GPIO_PCMCIA_SKTSEL, 1); | |
| 80 | udelay(1); | |
| 81 | gpio_set_value(GPIO_PCMCIA_RESET, 1); | |
| 82 | udelay(10); | |
| 83 | gpio_set_value(GPIO_PCMCIA_RESET, 0); | |
| 84 | } | |
| 85 | break; | |
| 86 | } | |
| 87 | ||
| 88 | return 0; | |
| 89 | } | |
| 90 | ||
| 8616e2fb MR |
91 | static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = { |
| 92 | .owner = THIS_MODULE, | |
| 93 | .hw_init = cmx255_pcmcia_hw_init, | |
| 94 | .hw_shutdown = cmx255_pcmcia_shutdown, | |
| 95 | .socket_state = cmx255_pcmcia_socket_state, | |
| 96 | .configure_socket = cmx255_pcmcia_configure_socket, | |
| 8616e2fb MR |
97 | .nr = 1, |
| 98 | }; | |
| 99 | ||
| 100 | static struct platform_device *cmx255_pcmcia_device; | |
| 101 | ||
| 102 | int __init cmx255_pcmcia_init(void) | |
| 103 | { | |
| 104 | int ret; | |
| 105 | ||
| 106 | cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | |
| 107 | ||
| 108 | if (!cmx255_pcmcia_device) | |
| 109 | return -ENOMEM; | |
| 110 | ||
| 111 | ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops, | |
| 112 | sizeof(cmx255_pcmcia_ops)); | |
| 113 | ||
| 114 | if (ret == 0) { | |
| 115 | printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n"); | |
| 116 | ret = platform_device_add(cmx255_pcmcia_device); | |
| 117 | } | |
| 118 | ||
| 119 | if (ret) | |
| 120 | platform_device_put(cmx255_pcmcia_device); | |
| 121 | ||
| 122 | return ret; | |
| 123 | } | |
| 124 | ||
| 125 | void __exit cmx255_pcmcia_exit(void) | |
| 126 | { | |
| 127 | platform_device_unregister(cmx255_pcmcia_device); | |
| 128 | } |