// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/pcmcia/sa1100_badge4.c * * BadgePAD 4 PCMCIA specific routines * * Christopher Hoover <ch@hpl.hp.com> * * Copyright (C) 2002 Hewlett-Packard Company */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/init.h> #include <mach/hardware.h> #include <asm/mach-types.h> #include <mach/badge4.h> #include <asm/hardware/sa1111.h> #include "sa1111_generic.h" /* * BadgePAD 4 Details * * PCM Vcc: * * PCM Vcc on BadgePAD 4 can be jumpered for 3v3 (short pins 1 and 3 * on JP6) or 5v0 (short pins 3 and 5 on JP6). * * PCM Vpp: * * PCM Vpp on BadgePAD 4 can be jumpered for 12v0 (short pins 4 and 6 * on JP6) or tied to PCM Vcc (short pins 2 and 4 on JP6). N.B., * 12v0 operation requires that the power supply actually supply 12v0 * via pin 7 of JP7. * * CF Vcc: * * CF Vcc on BadgePAD 4 can be jumpered either for 3v3 (short pins 1 * and 2 on JP10) or 5v0 (short pins 2 and 3 on JP10). * * Unfortunately there's no way programmatically to determine how a * given board is jumpered. This code assumes a default jumpering * as described below. * * If the defaults aren't correct, you may override them with a pcmv * setup argument: pcmv=<pcm vcc>,<pcm vpp>,<cf vcc>. The units are * tenths of volts; e.g. pcmv=33,120,50 indicates 3v3 PCM Vcc, 12v0 * PCM Vpp, and 5v0 CF Vcc. * */ static int badge4_pcmvcc = 50; /* pins 3 and 5 jumpered on JP6 */ static int badge4_pcmvpp = 50; /* pins 2 and 4 jumpered on JP6 */ static int badge4_cfvcc = 33; /* pins 1 and 2 jumpered on JP10 */ static void complain_about_jumpering(const char *whom, const char *supply, int given, int wanted) { printk(KERN_ERR "%s: %s %d.%dV wanted but board is jumpered for %s %d.%dV operation" "; re-jumper the board and/or use pcmv=xx,xx,xx\n", whom, supply, wanted / 10, wanted % 10, supply, given / 10, given % 10); } static int badge4_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { int ret; switch (skt->nr) { case 0: if ((state->Vcc != 0) && (state->Vcc != badge4_pcmvcc)) { complain_about_jumpering(__func__, "pcmvcc", badge4_pcmvcc, state->Vcc); // Apply power regardless of the jumpering. // return -1; } if ((state->Vpp != 0) && (state->Vpp != badge4_pcmvpp)) { complain_about_jumpering(__func__, "pcmvpp", badge4_pcmvpp, state->Vpp); return -1; } break; case 1: if ((state->Vcc != 0) && (state->Vcc != badge4_cfvcc)) { complain_about_jumpering(__func__, "cfvcc", badge4_cfvcc, state->Vcc); return -1; } break; default: return -1; } ret = sa1111_pcmcia_configure_socket(skt, state); if (ret == 0) { unsigned long flags; int need5V; local_irq_save(flags); need5V = ((state->Vcc == 50) || (state->Vpp == 50)); badge4_set_5V(BADGE4_5V_PCMCIA_SOCK(skt->nr), need5V); local_irq_restore(flags); } return ret; } static struct pcmcia_low_level badge4_pcmcia_ops = { .owner = THIS_MODULE, .configure_socket = badge4_pcmcia_configure_socket, .first = 0, .nr = 2, }; int pcmcia_badge4_init(struct sa1111_dev *dev) { printk(KERN_INFO "%s: badge4_pcmvcc=%d, badge4_pcmvpp=%d, badge4_cfvcc=%d\n", __func__, badge4_pcmvcc, badge4_pcmvpp, badge4_cfvcc); sa11xx_drv_pcmcia_ops(&badge4_pcmcia_ops); return sa1111_pcmcia_add(dev, &badge4_pcmcia_ops, sa11xx_drv_pcmcia_add_one); } #ifndef MODULE static int __init pcmv_setup(char *s) { int v[4]; s = get_options(s, ARRAY_SIZE(v), v); if (v[0] >= 1) badge4_pcmvcc = v[1]; if (v[0] >= 2) badge4_pcmvpp = v[2]; if (v[0] >= 3) badge4_cfvcc = v[3]; return 1; } __setup("pcmv=", pcmv_setup); #endif