Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * drivers/pcmcia/sa1100_assabet.c | |
3 | * | |
4 | * PCMCIA implementation routines for Assabet | |
5 | * | |
6 | */ | |
7 | #include <linux/module.h> | |
8 | #include <linux/kernel.h> | |
9 | #include <linux/errno.h> | |
10 | #include <linux/interrupt.h> | |
11 | #include <linux/device.h> | |
12 | #include <linux/init.h> | |
03e0092c | 13 | #include <linux/gpio.h> |
1da177e4 | 14 | |
1da177e4 | 15 | #include <asm/mach-types.h> |
a09e64fb | 16 | #include <mach/assabet.h> |
1da177e4 LT |
17 | |
18 | #include "sa1100_generic.h" | |
19 | ||
1da177e4 LT |
20 | static int assabet_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
21 | { | |
03e0092c RK |
22 | skt->stat[SOC_STAT_CD].gpio = ASSABET_GPIO_CF_CD; |
23 | skt->stat[SOC_STAT_CD].name = "CF CD"; | |
24 | skt->stat[SOC_STAT_BVD1].gpio = ASSABET_GPIO_CF_BVD1; | |
25 | skt->stat[SOC_STAT_BVD1].name = "CF BVD1"; | |
26 | skt->stat[SOC_STAT_BVD2].gpio = ASSABET_GPIO_CF_BVD2; | |
27 | skt->stat[SOC_STAT_BVD2].name = "CF BVD2"; | |
28 | skt->stat[SOC_STAT_RDY].gpio = ASSABET_GPIO_CF_IRQ; | |
29 | skt->stat[SOC_STAT_RDY].name = "CF RDY"; | |
1da177e4 | 30 | |
03e0092c | 31 | return 0; |
1da177e4 LT |
32 | } |
33 | ||
34 | static void | |
35 | assabet_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) | |
36 | { | |
1da177e4 LT |
37 | state->vs_3v = 1; /* Can only apply 3.3V on Assabet. */ |
38 | state->vs_Xv = 0; | |
39 | } | |
40 | ||
41 | static int | |
42 | assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
43 | { | |
44 | unsigned int mask; | |
45 | ||
46 | switch (state->Vcc) { | |
47 | case 0: | |
48 | mask = 0; | |
49 | break; | |
50 | ||
51 | case 50: | |
52 | printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n", | |
2e11cb4c | 53 | __func__); |
1da177e4 LT |
54 | |
55 | case 33: /* Can only apply 3.3V to the CF slot. */ | |
56 | mask = ASSABET_BCR_CF_PWR; | |
57 | break; | |
58 | ||
59 | default: | |
2e11cb4c | 60 | printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__, |
1da177e4 LT |
61 | state->Vcc); |
62 | return -1; | |
63 | } | |
64 | ||
03e0092c | 65 | /* Silently ignore Vpp, speaker enable. */ |
1da177e4 LT |
66 | |
67 | if (state->flags & SS_RESET) | |
68 | mask |= ASSABET_BCR_CF_RST; | |
03e0092c RK |
69 | if (!(state->flags & SS_OUTPUT_ENA)) |
70 | mask |= ASSABET_BCR_CF_BUS_OFF; | |
1da177e4 | 71 | |
03e0092c RK |
72 | ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR | |
73 | ASSABET_BCR_CF_BUS_OFF, mask); | |
1da177e4 LT |
74 | |
75 | return 0; | |
76 | } | |
77 | ||
1da177e4 LT |
78 | /* |
79 | * Disable card status IRQs on suspend. | |
80 | */ | |
81 | static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
82 | { | |
1da177e4 LT |
83 | /* |
84 | * Tristate the CF bus signals. Also assert CF | |
85 | * reset as per user guide page 4-11. | |
86 | */ | |
87 | ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST); | |
88 | } | |
89 | ||
90 | static struct pcmcia_low_level assabet_pcmcia_ops = { | |
91 | .owner = THIS_MODULE, | |
1da177e4 | 92 | .hw_init = assabet_pcmcia_hw_init, |
1da177e4 LT |
93 | .socket_state = assabet_pcmcia_socket_state, |
94 | .configure_socket = assabet_pcmcia_configure_socket, | |
1da177e4 LT |
95 | .socket_suspend = assabet_pcmcia_socket_suspend, |
96 | }; | |
97 | ||
34cdf25a | 98 | int pcmcia_assabet_init(struct device *dev) |
1da177e4 LT |
99 | { |
100 | int ret = -ENODEV; | |
101 | ||
102 | if (machine_is_assabet() && !machine_has_neponset()) | |
103 | ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1); | |
104 | ||
105 | return ret; | |
106 | } |