2 * drivers/pcmcia/sa1100_flexanet.c
4 * PCMCIA implementation routines for Flexanet.
5 * by Jordi Colomer, 09/05/2001
9 #include <linux/kernel.h>
10 #include <linux/sched.h>
12 #include <asm/hardware.h>
14 #include "sa1100_generic.h"
21 { IRQ_GPIO_CF1_CD, GPIO_CF1_NCD, "CF1_CD" },
22 { IRQ_GPIO_CF1_BVD1, GPIO_CF1_BVD1, "CF1_BVD1" },
23 { IRQ_GPIO_CF2_CD, GPIO_CF2_NCD, "CF2_CD" },
24 { IRQ_GPIO_CF2_BVD1, GPIO_CF2_BVD1, "CF2_BVD1" }
28 * Socket initialization.
30 * Called by sa1100_pcmcia_driver_init on startup.
31 * Must return the number of slots.
34 static int flexanet_pcmcia_init(struct pcmcia_init *init)
38 /* Configure the GPIOs as inputs (BVD2 is not implemented) */
39 GPDR &= ~(GPIO_CF1_NCD | GPIO_CF1_BVD1 | GPIO_CF1_IRQ |
40 GPIO_CF2_NCD | GPIO_CF2_BVD1 | GPIO_CF2_IRQ );
43 set_GPIO_IRQ_edge( GPIO_CF1_IRQ | GPIO_CF2_IRQ, GPIO_FALLING_EDGE );
45 /* Register the socket interrupts (not the card interrupts) */
46 for (i = 0; i < ARRAY_SIZE(irqs); i++) {
47 set_GPIO_IRQ_edge(irqs[i].gpio, GPIO_NO_EDGES);
48 res = request_irq(irqs[i].irq, init->handler, SA_INTERRUPT,
54 /* If we failed, then free all interrupts requested thus far. */
56 printk(KERN_ERR "%s: Request for IRQ%u failed: %d\n", __FUNCTION__,
59 free_irq(irqs[i].irq, NULL);
71 static int flexanet_pcmcia_shutdown(void)
76 for (i = 0; i < ARRAY_SIZE(irqs); i++)
77 free_irq(irqs[i].irq, NULL);
84 * Get the state of the sockets.
86 * Sockets in Flexanet are 3.3V only, without BVD2.
89 static int flexanet_pcmcia_socket_state(struct pcmcia_state_array
93 if (state_array->size < 2)
96 /* Sense the GPIOs, asynchronously */
100 state_array->state[0].detect = ((levels & GPIO_CF1_NCD)==0)?1:0;
101 state_array->state[0].ready = (levels & GPIO_CF1_IRQ)?1:0;
102 state_array->state[0].bvd1 = (levels & GPIO_CF1_BVD1)?1:0;
103 state_array->state[0].bvd2 = 1;
104 state_array->state[0].wrprot = 0;
105 state_array->state[0].vs_3v = 1;
106 state_array->state[0].vs_Xv = 0;
109 state_array->state[1].detect = ((levels & GPIO_CF2_NCD)==0)?1:0;
110 state_array->state[1].ready = (levels & GPIO_CF2_IRQ)?1:0;
111 state_array->state[1].bvd1 = (levels & GPIO_CF2_BVD1)?1:0;
112 state_array->state[1].bvd2 = 1;
113 state_array->state[1].wrprot = 0;
114 state_array->state[1].vs_3v = 1;
115 state_array->state[1].vs_Xv = 0;
122 * Return the IRQ information for a given socket number (the IRQ number)
125 static int flexanet_pcmcia_get_irq_info(struct pcmcia_irq_info *info){
127 /* check the socket index */
132 info->irq = IRQ_GPIO_CF1_IRQ;
133 else if (info->sock == 1)
134 info->irq = IRQ_GPIO_CF2_IRQ;
143 static int flexanet_pcmcia_configure_socket(const struct pcmcia_configure
146 unsigned long value, flags, mask;
149 if (configure->sock > 1)
152 /* Ignore the VCC level since it is 3.3V and always on */
153 switch (configure->vcc)
156 printk(KERN_WARNING "%s(): CS asked to power off.\n", __FUNCTION__);
160 printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
167 printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
172 /* Reset the slot(s) using the controls in the BCR */
175 switch (configure->sock)
177 case 0 : mask = FHH_BCR_CF1_RST; break;
178 case 1 : mask = FHH_BCR_CF2_RST; break;
181 save_flags_cli(flags);
183 value = flexanet_BCR;
184 value = (configure->reset) ? (value | mask) : (value & ~mask);
185 FHH_BCR = flexanet_BCR = value;
187 restore_flags(flags);
192 static int flexanet_pcmcia_socket_init(int sock)
195 set_GPIO_IRQ_edge(GPIO_CF1_NCD | GPIO_CF1_BVD1, GPIO_BOTH_EDGES);
197 set_GPIO_IRQ_edge(GPIO_CF2_NCD | GPIO_CF2_BVD1, GPIO_BOTH_EDGES);
202 static int flexanet_pcmcia_socket_suspend(int sock)
205 set_GPIO_IRQ_edge(GPIO_CF1_NCD | GPIO_CF1_BVD1, GPIO_NO_EDGES);
207 set_GPIO_IRQ_edge(GPIO_CF2_NCD | GPIO_CF2_BVD1, GPIO_NO_EDGES);
213 * The set of socket operations
216 struct pcmcia_low_level flexanet_pcmcia_ops = {
217 init: flexanet_pcmcia_init,
218 shutdown: flexanet_pcmcia_shutdown,
219 socket_state: flexanet_pcmcia_socket_state,
220 get_irq_info: flexanet_pcmcia_get_irq_info,
221 configure_socket: flexanet_pcmcia_configure_socket,
223 socket_init: flexanet_pcmcia_socket_init,
224 socket_suspend: flexanet_pcmcia_socket_suspend,