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Commit | Line | Data |
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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 | ||
1da177e4 LT |
34 | static int |
35 | assabet_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
36 | { | |
37 | unsigned int mask; | |
38 | ||
39 | switch (state->Vcc) { | |
40 | case 0: | |
41 | mask = 0; | |
42 | break; | |
43 | ||
44 | case 50: | |
45 | printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V...\n", | |
2e11cb4c | 46 | __func__); |
1da177e4 LT |
47 | |
48 | case 33: /* Can only apply 3.3V to the CF slot. */ | |
49 | mask = ASSABET_BCR_CF_PWR; | |
50 | break; | |
51 | ||
52 | default: | |
2e11cb4c | 53 | printk(KERN_ERR "%s(): unrecognized Vcc %u\n", __func__, |
1da177e4 LT |
54 | state->Vcc); |
55 | return -1; | |
56 | } | |
57 | ||
03e0092c | 58 | /* Silently ignore Vpp, speaker enable. */ |
1da177e4 LT |
59 | |
60 | if (state->flags & SS_RESET) | |
61 | mask |= ASSABET_BCR_CF_RST; | |
03e0092c RK |
62 | if (!(state->flags & SS_OUTPUT_ENA)) |
63 | mask |= ASSABET_BCR_CF_BUS_OFF; | |
1da177e4 | 64 | |
03e0092c RK |
65 | ASSABET_BCR_frob(ASSABET_BCR_CF_RST | ASSABET_BCR_CF_PWR | |
66 | ASSABET_BCR_CF_BUS_OFF, mask); | |
1da177e4 LT |
67 | |
68 | return 0; | |
69 | } | |
70 | ||
1da177e4 LT |
71 | /* |
72 | * Disable card status IRQs on suspend. | |
73 | */ | |
74 | static void assabet_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) | |
75 | { | |
1da177e4 LT |
76 | /* |
77 | * Tristate the CF bus signals. Also assert CF | |
78 | * reset as per user guide page 4-11. | |
79 | */ | |
80 | ASSABET_BCR_set(ASSABET_BCR_CF_BUS_OFF | ASSABET_BCR_CF_RST); | |
81 | } | |
82 | ||
83 | static struct pcmcia_low_level assabet_pcmcia_ops = { | |
84 | .owner = THIS_MODULE, | |
1da177e4 | 85 | .hw_init = assabet_pcmcia_hw_init, |
a1d05002 | 86 | .socket_state = soc_common_cf_socket_state, |
1da177e4 | 87 | .configure_socket = assabet_pcmcia_configure_socket, |
1da177e4 LT |
88 | .socket_suspend = assabet_pcmcia_socket_suspend, |
89 | }; | |
90 | ||
34cdf25a | 91 | int pcmcia_assabet_init(struct device *dev) |
1da177e4 LT |
92 | { |
93 | int ret = -ENODEV; | |
94 | ||
95 | if (machine_is_assabet() && !machine_has_neponset()) | |
96 | ret = sa11xx_drv_pcmcia_probe(dev, &assabet_pcmcia_ops, 1, 1); | |
97 | ||
98 | return ret; | |
99 | } |