Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/drivers/pcmcia/sa1100_neponset.c | |
3 | * | |
4 | * Neponset PCMCIA specific routines | |
5 | */ | |
6 | #include <linux/module.h> | |
7 | #include <linux/kernel.h> | |
1da177e4 LT |
8 | #include <linux/device.h> |
9 | #include <linux/errno.h> | |
10 | #include <linux/init.h> | |
11 | ||
a09e64fb | 12 | #include <mach/hardware.h> |
1da177e4 | 13 | #include <asm/mach-types.h> |
a09e64fb | 14 | #include <mach/neponset.h> |
1da177e4 LT |
15 | #include <asm/hardware/sa1111.h> |
16 | ||
17 | #include "sa1111_generic.h" | |
18 | ||
19 | /* | |
20 | * Neponset uses the Maxim MAX1600, with the following connections: | |
21 | * | |
22 | * MAX1600 Neponset | |
23 | * | |
24 | * A0VCC SA-1111 GPIO A<1> | |
25 | * A1VCC SA-1111 GPIO A<0> | |
26 | * A0VPP CPLD NCR A0VPP | |
27 | * A1VPP CPLD NCR A1VPP | |
28 | * B0VCC SA-1111 GPIO A<2> | |
29 | * B1VCC SA-1111 GPIO A<3> | |
30 | * B0VPP ground (slot B is CF) | |
31 | * B1VPP ground (slot B is CF) | |
32 | * | |
33 | * VX VCC (5V) | |
34 | * VY VCC3_3 (3.3V) | |
35 | * 12INA 12V | |
36 | * 12INB ground (slot B is CF) | |
37 | * | |
38 | * The MAX1600 CODE pin is tied to ground, placing the device in | |
39 | * "Standard Intel code" mode. Refer to the Maxim data sheet for | |
40 | * the corresponding truth table. | |
41 | */ | |
42 | ||
43 | static int | |
44 | neponset_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) | |
45 | { | |
701a5dc0 | 46 | struct sa1111_pcmcia_socket *s = to_skt(skt); |
1da177e4 LT |
47 | unsigned int ncr_mask, ncr_set, pa_dwr_mask, pa_dwr_set; |
48 | int ret; | |
49 | ||
50 | switch (skt->nr) { | |
51 | case 0: | |
52 | pa_dwr_mask = GPIO_A0 | GPIO_A1; | |
53 | ncr_mask = NCR_A0VPP | NCR_A1VPP; | |
54 | ||
55 | if (state->Vpp == 0) | |
56 | ncr_set = 0; | |
57 | else if (state->Vpp == 120) | |
58 | ncr_set = NCR_A1VPP; | |
59 | else if (state->Vpp == state->Vcc) | |
60 | ncr_set = NCR_A0VPP; | |
61 | else { | |
62 | printk(KERN_ERR "%s(): unrecognized VPP %u\n", | |
2e11cb4c | 63 | __func__, state->Vpp); |
1da177e4 LT |
64 | return -1; |
65 | } | |
66 | break; | |
67 | ||
68 | case 1: | |
69 | pa_dwr_mask = GPIO_A2 | GPIO_A3; | |
70 | ncr_mask = 0; | |
71 | ncr_set = 0; | |
72 | ||
73 | if (state->Vpp != state->Vcc && state->Vpp != 0) { | |
74 | printk(KERN_ERR "%s(): CF slot cannot support VPP %u\n", | |
2e11cb4c | 75 | __func__, state->Vpp); |
1da177e4 LT |
76 | return -1; |
77 | } | |
78 | break; | |
79 | ||
80 | default: | |
81 | return -1; | |
82 | } | |
83 | ||
84 | /* | |
85 | * pa_dwr_set is the mask for selecting Vcc on both sockets. | |
86 | * pa_dwr_mask selects which bits (and therefore socket) we change. | |
87 | */ | |
88 | switch (state->Vcc) { | |
89 | default: | |
90 | case 0: pa_dwr_set = 0; break; | |
91 | case 33: pa_dwr_set = GPIO_A1|GPIO_A2; break; | |
92 | case 50: pa_dwr_set = GPIO_A0|GPIO_A3; break; | |
93 | } | |
94 | ||
95 | ret = sa1111_pcmcia_configure_socket(skt, state); | |
96 | if (ret == 0) { | |
6ad1b614 | 97 | neponset_ncr_frob(ncr_mask, ncr_set); |
701a5dc0 | 98 | sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set); |
1da177e4 LT |
99 | } |
100 | ||
65c77dca | 101 | return ret; |
1da177e4 LT |
102 | } |
103 | ||
1da177e4 LT |
104 | static struct pcmcia_low_level neponset_pcmcia_ops = { |
105 | .owner = THIS_MODULE, | |
1da177e4 | 106 | .configure_socket = neponset_pcmcia_configure_socket, |
701a5dc0 RKAL |
107 | .first = 0, |
108 | .nr = 2, | |
1da177e4 LT |
109 | }; |
110 | ||
b29cf62c | 111 | int pcmcia_neponset_init(struct sa1111_dev *sadev) |
1da177e4 LT |
112 | { |
113 | int ret = -ENODEV; | |
114 | ||
115 | if (machine_is_assabet()) { | |
116 | /* | |
117 | * Set GPIO_A<3:0> to be outputs for the MAX1600, | |
118 | * and switch to standby mode. | |
119 | */ | |
120 | sa1111_set_io_dir(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0); | |
121 | sa1111_set_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0); | |
122 | sa1111_set_sleep_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0); | |
701a5dc0 RKAL |
123 | sa11xx_drv_pcmcia_ops(&neponset_pcmcia_ops); |
124 | ret = sa1111_pcmcia_add(sadev, &neponset_pcmcia_ops, | |
125 | sa11xx_drv_pcmcia_add_one); | |
1da177e4 LT |
126 | } |
127 | ||
128 | return ret; | |
129 | } |