2 * drivers/pcmcia/sa1100_assabet.c
4 * PCMCIA implementation routines for Assabet
7 #include <linux/kernel.h>
8 #include <linux/sched.h>
10 #include <asm/hardware.h>
12 #include <asm/arch/assabet.h>
14 #include "sa1100_generic.h"
21 { ASSABET_IRQ_GPIO_CF_CD, ASSABET_GPIO_CF_CD, "CF_CD" },
22 { ASSABET_IRQ_GPIO_CF_BVD2, ASSABET_GPIO_CF_BVD2, "CF_BVD2" },
23 { ASSABET_IRQ_GPIO_CF_BVD1, ASSABET_GPIO_CF_BVD1, "CF_BVD1" },
26 static int assabet_pcmcia_init(struct pcmcia_init *init)
30 /* Set transition detect */
31 set_GPIO_IRQ_edge(ASSABET_GPIO_CF_IRQ, GPIO_FALLING_EDGE);
33 /* Register interrupts */
34 for (i = 0; i < ARRAY_SIZE(irqs); i++) {
35 set_GPIO_IRQ_edge(irqs[i].gpio, GPIO_NO_EDGES);
36 res = request_irq(irqs[i].irq, init->handler, SA_INTERRUPT,
42 /* There's only one slot, but it's "Slot 1": */
46 printk(KERN_ERR "%s: request for IRQ%d failed\n",
47 __FUNCTION__, irqs[i].irq);
50 free_irq(irqs[i].irq, NULL);
56 * Release all resources.
58 static int assabet_pcmcia_shutdown(void)
62 for (i = 0; i < ARRAY_SIZE(irqs); i++)
63 free_irq(irqs[i].irq, NULL);
69 assabet_pcmcia_socket_state(struct pcmcia_state_array *state_array)
73 if (state_array->size < 2)
78 state_array->state[1].detect = (levels & ASSABET_GPIO_CF_CD) ? 0 : 1;
79 state_array->state[1].ready = (levels & ASSABET_GPIO_CF_IRQ) ? 1 : 0;
80 state_array->state[1].bvd1 = (levels & ASSABET_GPIO_CF_BVD1) ? 1 : 0;
81 state_array->state[1].bvd2 = (levels & ASSABET_GPIO_CF_BVD2) ? 1 : 0;
82 state_array->state[1].wrprot = 0; /* Not available on Assabet. */
83 state_array->state[1].vs_3v = 1; /* Can only apply 3.3V on Assabet. */
84 state_array->state[1].vs_Xv = 0;
89 static int assabet_pcmcia_get_irq_info(struct pcmcia_irq_info *info)
95 info->irq = ASSABET_IRQ_GPIO_CF_IRQ;
101 assabet_pcmcia_configure_socket(const struct pcmcia_configure *configure)
105 if (configure->sock > 1)
108 if (configure->sock == 0)
111 switch (configure->vcc) {
117 printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n",
120 case 33: /* Can only apply 3.3V to the CF slot. */
121 mask = ASSABET_BCR_CF_PWR;
125 printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __FUNCTION__,
130 /* Silently ignore Vpp, output enable, speaker enable. */
132 if (configure->reset)
133 mask |= ASSABET_BCR_CF_RST;
135 ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR, mask);
138 * Handle suspend mode properly. This prevents a
139 * flood of IRQs from the CF device.
142 enable_irq(ASSABET_IRQ_GPIO_CF_IRQ);
144 disable_irq(ASSABET_IRQ_GPIO_CF_IRQ);
150 * Enable card status IRQs on (re-)initialisation. This can
151 * be called at initialisation, power management event, or
154 static int assabet_pcmcia_socket_init(int sock)
162 ASSABET_BCR_clear(ASSABET_BCR_CF_BUS_OFF);
164 for (i = 0; i < ARRAY_SIZE(irqs); i++)
165 set_GPIO_IRQ_edge(irqs[i].gpio, GPIO_BOTH_EDGES);
172 * Disable card status IRQs on suspend.
174 static int assabet_pcmcia_socket_suspend(int sock)
179 for (i = 0; i < ARRAY_SIZE(irqs); i++)
180 set_GPIO_IRQ_edge(irqs[i].gpio, GPIO_NO_EDGES);
183 * Tristate the CF bus signals. Also assert CF
184 * reset as per user guide page 4-11.
186 ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST);
192 struct pcmcia_low_level assabet_pcmcia_ops = {
193 init: assabet_pcmcia_init,
194 shutdown: assabet_pcmcia_shutdown,
195 socket_state: assabet_pcmcia_socket_state,
196 get_irq_info: assabet_pcmcia_get_irq_info,
197 configure_socket: assabet_pcmcia_configure_socket,
199 socket_init: assabet_pcmcia_socket_init,
200 socket_suspend: assabet_pcmcia_socket_suspend,