Root/
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> |
8 | #include <linux/device.h> |
9 | #include <linux/errno.h> |
10 | #include <linux/init.h> |
11 | |
12 | #include <mach/hardware.h> |
13 | #include <asm/mach-types.h> |
14 | #include <mach/neponset.h> |
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 | { |
46 | struct sa1111_pcmcia_socket *s = to_skt(skt); |
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", |
63 | __func__, state->Vpp); |
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", |
75 | __func__, state->Vpp); |
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) { |
97 | neponset_ncr_frob(ncr_mask, ncr_set); |
98 | sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set); |
99 | } |
100 | |
101 | return ret; |
102 | } |
103 | |
104 | static struct pcmcia_low_level neponset_pcmcia_ops = { |
105 | .owner = THIS_MODULE, |
106 | .configure_socket = neponset_pcmcia_configure_socket, |
107 | .first = 0, |
108 | .nr = 2, |
109 | }; |
110 | |
111 | int pcmcia_neponset_init(struct sa1111_dev *sadev) |
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); |
123 | sa11xx_drv_pcmcia_ops(&neponset_pcmcia_ops); |
124 | ret = sa1111_pcmcia_add(sadev, &neponset_pcmcia_ops, |
125 | sa11xx_drv_pcmcia_add_one); |
126 | } |
127 | |
128 | return ret; |
129 | } |
130 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9