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b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
1da177e4 LT |
2 | /* |
3 | * drivers/pcmcia/sa1100_shannon.c | |
4 | * | |
5 | * PCMCIA implementation routines for Shannon | |
6 | * | |
7 | */ | |
8 | #include <linux/module.h> | |
9 | #include <linux/kernel.h> | |
1da177e4 LT |
10 | #include <linux/device.h> |
11 | #include <linux/init.h> | |
3169663a | 12 | #include <linux/io.h> |
1da177e4 | 13 | |
a09e64fb | 14 | #include <mach/hardware.h> |
1da177e4 | 15 | #include <asm/mach-types.h> |
a09e64fb | 16 | #include <mach/shannon.h> |
1da177e4 LT |
17 | #include <asm/irq.h> |
18 | #include "sa1100_generic.h" | |
19 | ||
1da177e4 LT |
20 | static int shannon_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
21 | { | |
22 | /* All those are inputs */ | |
3b61436a RK |
23 | GAFR &= ~(GPIO_GPIO(SHANNON_GPIO_EJECT_0) | |
24 | GPIO_GPIO(SHANNON_GPIO_EJECT_1) | | |
25 | GPIO_GPIO(SHANNON_GPIO_RDY_0) | | |
26 | GPIO_GPIO(SHANNON_GPIO_RDY_1)); | |
27 | ||
28 | if (skt->nr == 0) { | |
29 | skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_0; | |
30 | skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_0"; | |
31 | skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_0; | |
32 | skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_0"; | |
33 | } else { | |
34 | skt->stat[SOC_STAT_CD].gpio = SHANNON_GPIO_EJECT_1; | |
35 | skt->stat[SOC_STAT_CD].name = "PCMCIA_CD_1"; | |
36 | skt->stat[SOC_STAT_RDY].gpio = SHANNON_GPIO_RDY_1; | |
37 | skt->stat[SOC_STAT_RDY].name = "PCMCIA_RDY_1"; | |
38 | } | |
1da177e4 | 39 | |
3b61436a | 40 | return 0; |
1da177e4 LT |
41 | } |
42 | ||
43 | static void | |
44 | shannon_pcmcia_socket_state(struct soc_pcmcia_socket *skt, | |
45 | struct pcmcia_state *state) | |
46 | { | |
1da177e4 LT |
47 | switch (skt->nr) { |
48 | case 0: | |
1da177e4 LT |
49 | state->bvd1 = 1; |
50 | state->bvd2 = 1; | |
51 | state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */ | |
52 | state->vs_Xv = 0; | |
53 | break; | |
54 | ||
55 | case 1: | |
1da177e4 LT |
56 | state->bvd1 = 1; |
57 | state->bvd2 = 1; | |
58 | state->vs_3v = 1; /* FIXME Can only apply 3.3V on Shannon. */ | |
59 | state->vs_Xv = 0; | |
60 | break; | |
61 | } | |
62 | } | |
63 | ||
64 | static int | |
65 | shannon_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, | |
66 | const socket_state_t *state) | |
67 | { | |
68 | switch (state->Vcc) { | |
69 | case 0: /* power off */ | |
2e11cb4c | 70 | printk(KERN_WARNING "%s(): CS asked for 0V, still applying 3.3V..\n", __func__); |
1da177e4 LT |
71 | break; |
72 | case 50: | |
2e11cb4c | 73 | printk(KERN_WARNING "%s(): CS asked for 5V, applying 3.3V..\n", __func__); |
1da177e4 LT |
74 | case 33: |
75 | break; | |
76 | default: | |
77 | printk(KERN_ERR "%s(): unrecognized Vcc %u\n", | |
2e11cb4c | 78 | __func__, state->Vcc); |
1da177e4 LT |
79 | return -1; |
80 | } | |
81 | ||
2e11cb4c | 82 | printk(KERN_WARNING "%s(): Warning, Can't perform reset\n", __func__); |
1da177e4 LT |
83 | |
84 | /* Silently ignore Vpp, output enable, speaker enable. */ | |
85 | ||
86 | return 0; | |
87 | } | |
88 | ||
1da177e4 LT |
89 | static struct pcmcia_low_level shannon_pcmcia_ops = { |
90 | .owner = THIS_MODULE, | |
91 | .hw_init = shannon_pcmcia_hw_init, | |
1da177e4 LT |
92 | .socket_state = shannon_pcmcia_socket_state, |
93 | .configure_socket = shannon_pcmcia_configure_socket, | |
1da177e4 LT |
94 | }; |
95 | ||
34cdf25a | 96 | int pcmcia_shannon_init(struct device *dev) |
1da177e4 LT |
97 | { |
98 | int ret = -ENODEV; | |
99 | ||
100 | if (machine_is_shannon()) | |
101 | ret = sa11xx_drv_pcmcia_probe(dev, &shannon_pcmcia_ops, 0, 2); | |
102 | ||
103 | return ret; | |
104 | } |