1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/drivers/pcmcia/pxa2xx_lubbock.c
6 * Created: Jan 10, 2002
7 * Copyright: MontaVista Software Inc.
9 * Originally based upon linux/drivers/pcmcia/sa1100_neponset.c
11 * Lubbock PCMCIA specific routines.
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/device.h>
16 #include <linux/errno.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
20 #include <mach/hardware.h>
21 #include <asm/hardware/sa1111.h>
22 #include <asm/mach-types.h>
24 #include "sa1111_generic.h"
27 static int lubbock_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
32 ret = max1600_init(skt->socket.dev.parent, &m,
33 skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A,
42 lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
43 const socket_state_t *state)
45 struct max1600 *m = skt->driver_data;
48 /* Lubbock uses the Maxim MAX1602, with the following connections:
51 * MAX1602 Lubbock Register
53 * ----- ------- ----------------------
54 * A0VPP S0_PWR0 SA-1111 GPIO A<0>
55 * A1VPP S0_PWR1 SA-1111 GPIO A<1>
56 * A0VCC S0_PWR2 SA-1111 GPIO A<2>
57 * A1VCC S0_PWR3 SA-1111 GPIO A<3>
61 * CODE +3.3V Cirrus Code, CODE = High (VY)
64 * MAX1602 Lubbock Register
66 * ----- ------- ----------------------
67 * A0VPP GND VPP is not connected
68 * A1VPP GND VPP is not connected
69 * A0VCC S1_PWR0 MISC_WR<14>
70 * A1VCC S1_PWR1 MISC_WR<15>
73 * 12IN GND VPP is not connected
74 * CODE +3.3V Cirrus Code, CODE = High (VY)
89 ret = sa1111_pcmcia_configure_socket(skt, state);
91 ret = max1600_configure(m, state->Vcc, state->Vpp);
94 if (ret == 0 && state->Vcc == 33) {
95 struct pcmcia_state new_state;
99 * We can't sense the voltage properly on Lubbock before
100 * actually applying some power to the socket (catch 22).
101 * Resense the socket Voltage Sense pins after applying
104 * Note: It takes about 2.5ms for the MAX1602 VCC output
109 sa1111_pcmcia_socket_state(skt, &new_state);
111 if (!new_state.vs_3v && !new_state.vs_Xv) {
113 * Switch to 5V, Configure socket with 5V voltage
115 max1600_configure(m, 0, 0);
118 * It takes about 100ms to turn off Vcc.
123 * We need to hack around the const qualifier as
124 * well to keep this ugly workaround localized and
125 * not force it to the rest of the code. Barf bags
126 * available in the seat pocket in front of you!
128 ((socket_state_t *)state)->Vcc = 50;
129 ((socket_state_t *)state)->Vpp = 50;
138 static struct pcmcia_low_level lubbock_pcmcia_ops = {
139 .owner = THIS_MODULE,
140 .hw_init = lubbock_pcmcia_hw_init,
141 .configure_socket = lubbock_pcmcia_configure_socket,
146 #include "pxa2xx_base.h"
148 int pcmcia_lubbock_init(struct sa1111_dev *sadev)
150 pxa2xx_drv_pcmcia_ops(&lubbock_pcmcia_ops);
151 pxa2xx_configure_sockets(&sadev->dev, &lubbock_pcmcia_ops);
152 return sa1111_pcmcia_add(sadev, &lubbock_pcmcia_ops,
153 pxa2xx_drv_pcmcia_add_one);
156 MODULE_LICENSE("GPL");