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1 | // SPDX-License-Identifier: GPL-2.0 | |
2 | /* | |
3 | * drivers/pcmcia/sa1100_jornada720.c | |
4 | * | |
5 | * Jornada720 PCMCIA specific routines | |
6 | * | |
7 | */ | |
8 | #include <linux/module.h> | |
9 | #include <linux/kernel.h> | |
10 | #include <linux/device.h> | |
11 | #include <linux/errno.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/io.h> | |
14 | ||
15 | #include <mach/hardware.h> | |
16 | #include <asm/hardware/sa1111.h> | |
17 | #include <asm/mach-types.h> | |
18 | ||
19 | #include "sa1111_generic.h" | |
20 | ||
21 | /* Does SOCKET1_3V actually do anything? */ | |
22 | #define SOCKET0_POWER GPIO_GPIO0 | |
23 | #define SOCKET0_3V GPIO_GPIO2 | |
24 | #define SOCKET1_POWER (GPIO_GPIO1 | GPIO_GPIO3) | |
25 | #define SOCKET1_3V GPIO_GPIO3 | |
26 | ||
27 | static int | |
28 | jornada720_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
29 | { | |
30 | struct sa1111_pcmcia_socket *s = to_skt(skt); | |
31 | unsigned int pa_dwr_mask, pa_dwr_set; | |
32 | int ret; | |
33 | ||
34 | printk(KERN_INFO "%s(): config socket %d vcc %d vpp %d\n", __func__, | |
35 | skt->nr, state->Vcc, state->Vpp); | |
36 | ||
37 | switch (skt->nr) { | |
38 | case 0: | |
39 | pa_dwr_mask = SOCKET0_POWER | SOCKET0_3V; | |
40 | ||
41 | switch (state->Vcc) { | |
42 | default: | |
43 | case 0: | |
44 | pa_dwr_set = 0; | |
45 | break; | |
46 | case 33: | |
47 | pa_dwr_set = SOCKET0_POWER | SOCKET0_3V; | |
48 | break; | |
49 | case 50: | |
50 | pa_dwr_set = SOCKET0_POWER; | |
51 | break; | |
52 | } | |
53 | break; | |
54 | ||
55 | case 1: | |
56 | pa_dwr_mask = SOCKET1_POWER; | |
57 | ||
58 | switch (state->Vcc) { | |
59 | default: | |
60 | case 0: | |
61 | pa_dwr_set = 0; | |
62 | break; | |
63 | case 33: | |
64 | pa_dwr_set = SOCKET1_POWER; | |
65 | break; | |
66 | case 50: | |
67 | pa_dwr_set = SOCKET1_POWER; | |
68 | break; | |
69 | } | |
70 | break; | |
71 | ||
72 | default: | |
73 | return -1; | |
74 | } | |
75 | ||
76 | if (state->Vpp != state->Vcc && state->Vpp != 0) { | |
77 | printk(KERN_ERR "%s(): slot cannot support VPP %u\n", | |
78 | __func__, state->Vpp); | |
79 | return -EPERM; | |
80 | } | |
81 | ||
82 | ret = sa1111_pcmcia_configure_socket(skt, state); | |
83 | if (ret == 0) | |
84 | sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set); | |
85 | ||
86 | return ret; | |
87 | } | |
88 | ||
89 | static struct pcmcia_low_level jornada720_pcmcia_ops = { | |
90 | .owner = THIS_MODULE, | |
91 | .configure_socket = jornada720_pcmcia_configure_socket, | |
92 | .first = 0, | |
93 | .nr = 2, | |
94 | }; | |
95 | ||
96 | int pcmcia_jornada720_init(struct sa1111_dev *sadev) | |
97 | { | |
98 | unsigned int pin = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3; | |
99 | ||
100 | /* Fixme: why messing around with SA11x0's GPIO1? */ | |
101 | GRER |= 0x00000002; | |
102 | ||
103 | /* Set GPIO_A<3:1> to be outputs for PCMCIA/CF power controller: */ | |
104 | sa1111_set_io_dir(sadev, pin, 0, 0); | |
105 | sa1111_set_io(sadev, pin, 0); | |
106 | sa1111_set_sleep_io(sadev, pin, 0); | |
107 | ||
108 | sa11xx_drv_pcmcia_ops(&jornada720_pcmcia_ops); | |
109 | return sa1111_pcmcia_add(sadev, &jornada720_pcmcia_ops, | |
110 | sa11xx_drv_pcmcia_add_one); | |
111 | } |