2 * linux/drivers/pcmcia/sa1100_neponset.c
4 * Neponset PCMCIA specific routines
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>
12 #include <mach/hardware.h>
13 #include <asm/mach-types.h>
14 #include <mach/neponset.h>
15 #include <asm/hardware/sa1111.h>
17 #include "sa1111_generic.h"
20 * Neponset uses the Maxim MAX1600, with the following connections:
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)
36 * 12INB ground (slot B is CF)
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.
44 neponset_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state)
46 struct sa1111_pcmcia_socket *s = to_skt(skt);
47 unsigned int ncr_mask, ncr_set, pa_dwr_mask, pa_dwr_set;
52 pa_dwr_mask = GPIO_A0 | GPIO_A1;
53 ncr_mask = NCR_A0VPP | NCR_A1VPP;
57 else if (state->Vpp == 120)
59 else if (state->Vpp == state->Vcc)
62 printk(KERN_ERR "%s(): unrecognized VPP %u\n",
63 __func__, state->Vpp);
69 pa_dwr_mask = GPIO_A2 | GPIO_A3;
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);
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.
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;
95 ret = sa1111_pcmcia_configure_socket(skt, state);
97 neponset_ncr_frob(ncr_mask, ncr_set);
98 sa1111_set_io(s->dev, pa_dwr_mask, pa_dwr_set);
104 static struct pcmcia_low_level neponset_pcmcia_ops = {
105 .owner = THIS_MODULE,
106 .configure_socket = neponset_pcmcia_configure_socket,
111 int pcmcia_neponset_init(struct sa1111_dev *sadev)
114 * Set GPIO_A<3:0> to be outputs for the MAX1600,
115 * and switch to standby mode.
117 sa1111_set_io_dir(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
118 sa1111_set_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
119 sa1111_set_sleep_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
120 sa11xx_drv_pcmcia_ops(&neponset_pcmcia_ops);
121 return sa1111_pcmcia_add(sadev, &neponset_pcmcia_ops,
122 sa11xx_drv_pcmcia_add_one);