Initial import

1 files changed, 262 insertions, 0 deletions

diff --git a/drivers/pcmcia/pxa2xx_sharpsl.c b/drivers/pcmcia/pxa2xx_sharpsl.c
new file mode 100644
index 000000000..89ebd8c76
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_sharpsl.c
@@ -0,0 +1,262 @@
+/*
+ * 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");