| Mike Rapoport | 8616e2f | 2008-10-05 10:27:22 +0100 | [diff] [blame] | 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 <mike@compulab.co.il> | 
 | 10 |  * | 
 | 11 |  */ | 
 | 12 |  | 
 | 13 | #include <linux/platform_device.h> | 
 | 14 | #include <linux/irq.h> | 
 | 15 | #include <linux/delay.h> | 
 | 16 | #include <linux/gpio.h> | 
 | 17 |  | 
 | 18 | #include <asm/mach-types.h> | 
| Mike Rapoport | 8616e2f | 2008-10-05 10:27:22 +0100 | [diff] [blame] | 19 |  | 
 | 20 | #include "soc_common.h" | 
 | 21 |  | 
 | 22 | #define GPIO_PCMCIA_SKTSEL	(54) | 
 | 23 | #define GPIO_PCMCIA_S0_CD_VALID	(16) | 
 | 24 | #define GPIO_PCMCIA_S1_CD_VALID	(17) | 
 | 25 | #define GPIO_PCMCIA_S0_RDYINT	(6) | 
 | 26 | #define GPIO_PCMCIA_S1_RDYINT	(8) | 
 | 27 | #define GPIO_PCMCIA_RESET	(9) | 
 | 28 |  | 
 | 29 | #define PCMCIA_S0_CD_VALID	IRQ_GPIO(GPIO_PCMCIA_S0_CD_VALID) | 
 | 30 | #define PCMCIA_S1_CD_VALID	IRQ_GPIO(GPIO_PCMCIA_S1_CD_VALID) | 
 | 31 | #define PCMCIA_S0_RDYINT	IRQ_GPIO(GPIO_PCMCIA_S0_RDYINT) | 
 | 32 | #define PCMCIA_S1_RDYINT	IRQ_GPIO(GPIO_PCMCIA_S1_RDYINT) | 
 | 33 |  | 
 | 34 |  | 
 | 35 | static struct pcmcia_irqs irqs[] = { | 
 | 36 | 	{ 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" }, | 
 | 37 | 	{ 1, PCMCIA_S1_CD_VALID, "PCMCIA1 CD" }, | 
 | 38 | }; | 
 | 39 |  | 
 | 40 | static int cmx255_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | 
 | 41 | { | 
 | 42 | 	int ret = gpio_request(GPIO_PCMCIA_RESET, "PCCard reset"); | 
 | 43 | 	if (ret) | 
 | 44 | 		return ret; | 
 | 45 | 	gpio_direction_output(GPIO_PCMCIA_RESET, 0); | 
 | 46 |  | 
 | 47 | 	skt->irq = skt->nr == 0 ? PCMCIA_S0_RDYINT : PCMCIA_S1_RDYINT; | 
 | 48 | 	ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); | 
 | 49 | 	if (!ret) | 
 | 50 | 		gpio_free(GPIO_PCMCIA_RESET); | 
 | 51 |  | 
 | 52 | 	return ret; | 
 | 53 | } | 
 | 54 |  | 
 | 55 | static void cmx255_pcmcia_shutdown(struct soc_pcmcia_socket *skt) | 
 | 56 | { | 
 | 57 | 	soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); | 
 | 58 | 	gpio_free(GPIO_PCMCIA_RESET); | 
 | 59 | } | 
 | 60 |  | 
 | 61 |  | 
 | 62 | static void cmx255_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | 
 | 63 | 				       struct pcmcia_state *state) | 
 | 64 | { | 
 | 65 | 	int cd = skt->nr ? GPIO_PCMCIA_S1_CD_VALID : GPIO_PCMCIA_S0_CD_VALID; | 
| Mike Rapoport | 91c39dc | 2009-04-02 10:21:29 +0100 | [diff] [blame] | 66 | 	int rdy = skt->nr ? GPIO_PCMCIA_S1_RDYINT : GPIO_PCMCIA_S0_RDYINT; | 
| Mike Rapoport | 8616e2f | 2008-10-05 10:27:22 +0100 | [diff] [blame] | 67 |  | 
 | 68 | 	state->detect = !gpio_get_value(cd); | 
 | 69 | 	state->ready  = !!gpio_get_value(rdy); | 
 | 70 | 	state->bvd1   = 1; | 
 | 71 | 	state->bvd2   = 1; | 
 | 72 | 	state->vs_3v  = 0; | 
 | 73 | 	state->vs_Xv  = 0; | 
 | 74 | 	state->wrprot = 0;  /* not available */ | 
 | 75 | } | 
 | 76 |  | 
 | 77 |  | 
 | 78 | static int cmx255_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | 
 | 79 | 					  const socket_state_t *state) | 
 | 80 | { | 
 | 81 | 	switch (skt->nr) { | 
 | 82 | 	case 0: | 
 | 83 | 		if (state->flags & SS_RESET) { | 
 | 84 | 			gpio_set_value(GPIO_PCMCIA_SKTSEL, 0); | 
 | 85 | 			udelay(1); | 
 | 86 | 			gpio_set_value(GPIO_PCMCIA_RESET, 1); | 
 | 87 | 			udelay(10); | 
 | 88 | 			gpio_set_value(GPIO_PCMCIA_RESET, 0); | 
 | 89 | 		} | 
 | 90 | 		break; | 
 | 91 | 	case 1: | 
 | 92 | 		if (state->flags & SS_RESET) { | 
 | 93 | 			gpio_set_value(GPIO_PCMCIA_SKTSEL, 1); | 
 | 94 | 			udelay(1); | 
 | 95 | 			gpio_set_value(GPIO_PCMCIA_RESET, 1); | 
 | 96 | 			udelay(10); | 
 | 97 | 			gpio_set_value(GPIO_PCMCIA_RESET, 0); | 
 | 98 | 		} | 
 | 99 | 		break; | 
 | 100 | 	} | 
 | 101 |  | 
 | 102 | 	return 0; | 
 | 103 | } | 
 | 104 |  | 
 | 105 | static void cmx255_pcmcia_socket_init(struct soc_pcmcia_socket *skt) | 
 | 106 | { | 
 | 107 | } | 
 | 108 |  | 
 | 109 | static void cmx255_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | 
 | 110 | { | 
 | 111 | } | 
 | 112 |  | 
 | 113 |  | 
 | 114 | static struct pcmcia_low_level cmx255_pcmcia_ops __initdata = { | 
 | 115 | 	.owner			= THIS_MODULE, | 
 | 116 | 	.hw_init		= cmx255_pcmcia_hw_init, | 
 | 117 | 	.hw_shutdown		= cmx255_pcmcia_shutdown, | 
 | 118 | 	.socket_state		= cmx255_pcmcia_socket_state, | 
 | 119 | 	.configure_socket	= cmx255_pcmcia_configure_socket, | 
 | 120 | 	.socket_init		= cmx255_pcmcia_socket_init, | 
 | 121 | 	.socket_suspend		= cmx255_pcmcia_socket_suspend, | 
 | 122 | 	.nr			= 1, | 
 | 123 | }; | 
 | 124 |  | 
 | 125 | static struct platform_device *cmx255_pcmcia_device; | 
 | 126 |  | 
 | 127 | int __init cmx255_pcmcia_init(void) | 
 | 128 | { | 
 | 129 | 	int ret; | 
 | 130 |  | 
 | 131 | 	cmx255_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); | 
 | 132 |  | 
 | 133 | 	if (!cmx255_pcmcia_device) | 
 | 134 | 		return -ENOMEM; | 
 | 135 |  | 
 | 136 | 	ret = platform_device_add_data(cmx255_pcmcia_device, &cmx255_pcmcia_ops, | 
 | 137 | 				       sizeof(cmx255_pcmcia_ops)); | 
 | 138 |  | 
 | 139 | 	if (ret == 0) { | 
 | 140 | 		printk(KERN_INFO "Registering cm-x255 PCMCIA interface.\n"); | 
 | 141 | 		ret = platform_device_add(cmx255_pcmcia_device); | 
 | 142 | 	} | 
 | 143 |  | 
 | 144 | 	if (ret) | 
 | 145 | 		platform_device_put(cmx255_pcmcia_device); | 
 | 146 |  | 
 | 147 | 	return ret; | 
 | 148 | } | 
 | 149 |  | 
 | 150 | void __exit cmx255_pcmcia_exit(void) | 
 | 151 | { | 
 | 152 | 	platform_device_unregister(cmx255_pcmcia_device); | 
 | 153 | } |