--- /dev/null
+/*
+ * Sharp SL-C7xx Series PCMCIA routines
+ *
+ * Copyright (c) 2004-2005 Richard Purdie
+ *
+ * Based on Sharp's 2.4 kernel patches and pxa2xx_mainstone.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <asm/hardware/scoop.h>
+
+#include "soc_common.h"
+
+#define NO_KEEP_VS 0x0001
+#define SCOOP_DEV platform_scoop_config->devs
+
+static void sharpsl_pcmcia_init_reset(struct soc_pcmcia_socket *skt)
+{
+ struct scoop_pcmcia_dev *scoopdev = &SCOOP_DEV[skt->nr];
+
+ reset_scoop(scoopdev->dev);
+
+ /* Shared power controls need to be handled carefully */
+ if (platform_scoop_config->power_ctrl)
+ platform_scoop_config->power_ctrl(scoopdev->dev, 0x0000, skt->nr);
+ else
+ write_scoop_reg(scoopdev->dev, SCOOP_CPR, 0x0000);
+
+ scoopdev->keep_vs = NO_KEEP_VS;
+ scoopdev->keep_rd = 0;
+}
+
+static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+ if (SCOOP_DEV[skt->nr].cd_irq >= 0) {
+ skt->stat[SOC_STAT_CD].irq = SCOOP_DEV[skt->nr].cd_irq;
+ skt->stat[SOC_STAT_CD].name = SCOOP_DEV[skt->nr].cd_irq_str;
+ }
+
+ skt->socket.pci_irq = SCOOP_DEV[skt->nr].irq;
+
+ return 0;
+}
+
+static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+ struct pcmcia_state *state)
+{
+ unsigned short cpr, csr;
+ struct device *scoop = SCOOP_DEV[skt->nr].dev;
+
+ cpr = read_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_CPR);
+
+ write_scoop_reg(scoop, SCOOP_IRM, 0x00FF);
+ write_scoop_reg(scoop, SCOOP_ISR, 0x0000);
+ write_scoop_reg(scoop, SCOOP_IRM, 0x0000);
+ csr = read_scoop_reg(scoop, SCOOP_CSR);
+ if (csr & 0x0004) {
+ /* card eject */
+ write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
+ SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
+ }
+ else if (!(SCOOP_DEV[skt->nr].keep_vs & NO_KEEP_VS)) {
+ /* keep vs1,vs2 */
+ write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
+ csr |= SCOOP_DEV[skt->nr].keep_vs;
+ }
+ else if (cpr & 0x0003) {
+ /* power on */
+ write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
+ SCOOP_DEV[skt->nr].keep_vs = (csr & 0x00C0);
+ }
+ else {
+ /* card detect */
+ if ((machine_is_spitz() || machine_is_borzoi()) && skt->nr == 1) {
+ write_scoop_reg(scoop, SCOOP_CDR, 0x0000);
+ } else {
+ write_scoop_reg(scoop, SCOOP_CDR, 0x0002);
+ }
+ }
+
+ state->detect = (csr & 0x0004) ? 0 : 1;
+ state->ready = (csr & 0x0002) ? 1 : 0;
+ state->bvd1 = (csr & 0x0010) ? 1 : 0;
+ state->bvd2 = (csr & 0x0020) ? 1 : 0;
+ state->wrprot = (csr & 0x0008) ? 1 : 0;
+ state->vs_3v = (csr & 0x0040) ? 0 : 1;
+ state->vs_Xv = (csr & 0x0080) ? 0 : 1;
+
+ if ((cpr & 0x0080) && ((cpr & 0x8040) != 0x8040)) {
+ printk(KERN_ERR "sharpsl_pcmcia_socket_state(): CPR=%04X, Low voltage!\n", cpr);
+ }
+}
+
+
+static int sharpsl_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+ const socket_state_t *state)
+{
+ unsigned long flags;
+ struct device *scoop = SCOOP_DEV[skt->nr].dev;
+
+ unsigned short cpr, ncpr, ccr, nccr, mcr, nmcr, imr, nimr;
+
+ switch (state->Vcc) {
+ case 0: break;
+ case 33: break;
+ case 50: break;
+ default:
+ printk(KERN_ERR "sharpsl_pcmcia_configure_socket(): bad Vcc %u\n", state->Vcc);
+ return -1;
+ }
+
+ if ((state->Vpp!=state->Vcc) && (state->Vpp!=0)) {
+ printk(KERN_ERR "CF slot cannot support Vpp %u\n", state->Vpp);
+ return -1;
+ }
+
+ local_irq_save(flags);
+
+ nmcr = (mcr = read_scoop_reg(scoop, SCOOP_MCR)) & ~0x0010;
+ ncpr = (cpr = read_scoop_reg(scoop, SCOOP_CPR)) & ~0x0083;
+ nccr = (ccr = read_scoop_reg(scoop, SCOOP_CCR)) & ~0x0080;
+ nimr = (imr = read_scoop_reg(scoop, SCOOP_IMR)) & ~0x003E;
+
+ if ((machine_is_spitz() || machine_is_borzoi() || machine_is_akita()) && skt->nr == 0) {
+ ncpr |= (state->Vcc == 33) ? 0x0002 :
+ (state->Vcc == 50) ? 0x0002 : 0;
+ } else {
+ ncpr |= (state->Vcc == 33) ? 0x0001 :
+ (state->Vcc == 50) ? 0x0002 : 0;
+ }
+ nmcr |= (state->flags&SS_IOCARD) ? 0x0010 : 0;
+ ncpr |= (state->flags&SS_OUTPUT_ENA) ? 0x0080 : 0;
+ nccr |= (state->flags&SS_RESET)? 0x0080: 0;
+ nimr |= ((skt->status&SS_DETECT) ? 0x0004 : 0)|
+ ((skt->status&SS_READY) ? 0x0002 : 0)|
+ ((skt->status&SS_BATDEAD)? 0x0010 : 0)|
+ ((skt->status&SS_BATWARN)? 0x0020 : 0)|
+ ((skt->status&SS_STSCHG) ? 0x0010 : 0)|
+ ((skt->status&SS_WRPROT) ? 0x0008 : 0);
+
+ if (!(ncpr & 0x0003)) {
+ SCOOP_DEV[skt->nr].keep_rd = 0;
+ } else if (!SCOOP_DEV[skt->nr].keep_rd) {
+ if (nccr & 0x0080)
+ SCOOP_DEV[skt->nr].keep_rd = 1;
+ else
+ nccr |= 0x0080;
+ }
+
+ if (mcr != nmcr)
+ write_scoop_reg(scoop, SCOOP_MCR, nmcr);
+ if (cpr != ncpr) {
+ if (platform_scoop_config->power_ctrl)
+ platform_scoop_config->power_ctrl(scoop, ncpr , skt->nr);
+ else
+ write_scoop_reg(scoop, SCOOP_CPR, ncpr);
+ }
+ if (ccr != nccr)
+ write_scoop_reg(scoop, SCOOP_CCR, nccr);
+ if (imr != nimr)
+ write_scoop_reg(scoop, SCOOP_IMR, nimr);
+
+ local_irq_restore(flags);
+
+ return 0;
+}
+
+static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+ sharpsl_pcmcia_init_reset(skt);
+
+ /* Enable interrupt */
+ write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_IMR, 0x00C0);
+ write_scoop_reg(SCOOP_DEV[skt->nr].dev, SCOOP_MCR, 0x0101);
+ SCOOP_DEV[skt->nr].keep_vs = NO_KEEP_VS;
+}
+
+static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+ sharpsl_pcmcia_init_reset(skt);
+}
+
+static struct pcmcia_low_level sharpsl_pcmcia_ops = {
+ .owner = THIS_MODULE,
+ .hw_init = sharpsl_pcmcia_hw_init,
+ .socket_state = sharpsl_pcmcia_socket_state,
+ .configure_socket = sharpsl_pcmcia_configure_socket,
+ .socket_init = sharpsl_pcmcia_socket_init,
+ .socket_suspend = sharpsl_pcmcia_socket_suspend,
+ .first = 0,
+ .nr = 0,
+};
+
+#ifdef CONFIG_SA1100_COLLIE
+#include "sa11xx_base.h"
+
+int pcmcia_collie_init(struct device *dev)
+{
+ int ret = -ENODEV;
+
+ if (machine_is_collie())
+ ret = sa11xx_drv_pcmcia_probe(dev, &sharpsl_pcmcia_ops, 0, 1);
+
+ return ret;
+}
+
+#else
+
+static struct platform_device *sharpsl_pcmcia_device;
+
+static int __init sharpsl_pcmcia_init(void)
+{
+ int ret;
+
+ if (!platform_scoop_config)
+ return -ENODEV;
+
+ sharpsl_pcmcia_ops.nr = platform_scoop_config->num_devs;
+ sharpsl_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1);
+
+ if (!sharpsl_pcmcia_device)
+ return -ENOMEM;
+
+ ret = platform_device_add_data(sharpsl_pcmcia_device,
+ &sharpsl_pcmcia_ops, sizeof(sharpsl_pcmcia_ops));
+ if (ret == 0) {
+ sharpsl_pcmcia_device->dev.parent = platform_scoop_config->devs[0].dev;
+ ret = platform_device_add(sharpsl_pcmcia_device);
+ }
+
+ if (ret)
+ platform_device_put(sharpsl_pcmcia_device);
+
+ return ret;
+}
+
+static void __exit sharpsl_pcmcia_exit(void)
+{
+ platform_device_unregister(sharpsl_pcmcia_device);
+}
+
+fs_initcall(sharpsl_pcmcia_init);
+module_exit(sharpsl_pcmcia_exit);
+#endif
+
+MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pxa2xx-pcmcia");
Code Review / kvmfornfv.git / blobdiff