1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * linux/drivers/pcmcia/sa1100_neponset.c 4 * 5 * Neponset PCMCIA specific routines 6 */ 7 #include <linux/module.h> 8 #include <linux/kernel.h> 9 #include <linux/device.h> 10 #include <linux/errno.h> 11 #include <linux/init.h> 12 13 #include <asm/mach-types.h> 14 15 #include "sa1111_generic.h" 16 #include "max1600.h" 17 18 /* 19 * Neponset uses the Maxim MAX1600, with the following connections: 20 * 21 * MAX1600 Neponset 22 * 23 * A0VCC SA-1111 GPIO A<1> 24 * A1VCC SA-1111 GPIO A<0> 25 * A0VPP CPLD NCR A0VPP 26 * A1VPP CPLD NCR A1VPP 27 * B0VCC SA-1111 GPIO A<2> 28 * B1VCC SA-1111 GPIO A<3> 29 * B0VPP ground (slot B is CF) 30 * B1VPP ground (slot B is CF) 31 * 32 * VX VCC (5V) 33 * VY VCC3_3 (3.3V) 34 * 12INA 12V 35 * 12INB ground (slot B is CF) 36 * 37 * The MAX1600 CODE pin is tied to ground, placing the device in 38 * "Standard Intel code" mode. Refer to the Maxim data sheet for 39 * the corresponding truth table. 40 */ 41 static int neponset_pcmcia_hw_init(struct soc_pcmcia_socket *skt) 42 { 43 struct max1600 *m; 44 int ret; 45 46 ret = max1600_init(skt->socket.dev.parent, &m, 47 skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A, 48 MAX1600_CODE_LOW); 49 if (ret == 0) 50 skt->driver_data = m; 51 52 return ret; 53 } 54 55 static int 56 neponset_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) 57 { 58 struct max1600 *m = skt->driver_data; 59 int ret; 60 61 ret = sa1111_pcmcia_configure_socket(skt, state); 62 if (ret == 0) 63 ret = max1600_configure(m, state->Vcc, state->Vpp); 64 65 return ret; 66 } 67 68 static struct pcmcia_low_level neponset_pcmcia_ops = { 69 .owner = THIS_MODULE, 70 .hw_init = neponset_pcmcia_hw_init, 71 .configure_socket = neponset_pcmcia_configure_socket, 72 .first = 0, 73 .nr = 2, 74 }; 75 76 int pcmcia_neponset_init(struct sa1111_dev *sadev) 77 { 78 sa11xx_drv_pcmcia_ops(&neponset_pcmcia_ops); 79 return sa1111_pcmcia_add(sadev, &neponset_pcmcia_ops, 80 sa11xx_drv_pcmcia_add_one); 81 } 82