1 files changed, 264 insertions, 0 deletions

diff --git a/drivers/pcmcia/pxa2xx_sharpsl.c b/drivers/pcmcia/pxa2xx_sharpsl.c
new file mode 100644
index 000000000000..42efe218867a
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_sharpsl.c
@@ -0,0 +1,264 @@
+/*
+ * 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/device.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+
+#include <asm/hardware/scoop.h>
+#include <asm/arch/corgi.h>
+#include <asm/arch/pxa-regs.h>
+
+#include "soc_common.h"
+
+#define NO_KEEP_VS 0x0001
+
+static unsigned char keep_vs;
+static unsigned char keep_rd;
+
+static struct pcmcia_irqs irqs[] = {
+        { 0, CORGI_IRQ_GPIO_CF_CD, "PCMCIA0 CD"},
+};
+
+static void sharpsl_pcmcia_init_reset(void)
+{
+        reset_scoop(&corgiscoop_device.dev);
+        keep_vs = NO_KEEP_VS;
+        keep_rd = 0;
+}
+
+static int sharpsl_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+        int ret;
+
+        /*
+         * Setup default state of GPIO outputs
+         * before we enable them as outputs.
+         */
+        GPSR(GPIO48_nPOE) =
+                GPIO_bit(GPIO48_nPOE) |
+                GPIO_bit(GPIO49_nPWE) |
+                GPIO_bit(GPIO50_nPIOR) |
+                GPIO_bit(GPIO51_nPIOW) |
+                GPIO_bit(GPIO52_nPCE_1) |
+                GPIO_bit(GPIO53_nPCE_2);
+
+        pxa_gpio_mode(GPIO48_nPOE_MD);
+        pxa_gpio_mode(GPIO49_nPWE_MD);
+        pxa_gpio_mode(GPIO50_nPIOR_MD);
+        pxa_gpio_mode(GPIO51_nPIOW_MD);
+        pxa_gpio_mode(GPIO52_nPCE_1_MD);
+        pxa_gpio_mode(GPIO53_nPCE_2_MD);
+        pxa_gpio_mode(GPIO54_pSKTSEL_MD);
+        pxa_gpio_mode(GPIO55_nPREG_MD);
+        pxa_gpio_mode(GPIO56_nPWAIT_MD);
+        pxa_gpio_mode(GPIO57_nIOIS16_MD);
+
+        /* Register interrupts */
+        ret = soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
+
+        if (ret) {
+                printk(KERN_ERR "Request for Compact Flash IRQ failed\n");
+                return ret;
+        }
+
+        /* Enable interrupt */
+        write_scoop_reg(&corgiscoop_device.dev, SCOOP_IMR, 0x00C0);
+        write_scoop_reg(&corgiscoop_device.dev, SCOOP_MCR, 0x0101);
+        keep_vs = NO_KEEP_VS;
+
+        skt->irq = CORGI_IRQ_GPIO_CF_IRQ;
+
+        return 0;
+}
+
+static void sharpsl_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+        soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
+
+        /* CF_BUS_OFF */
+        sharpsl_pcmcia_init_reset();
+}
+
+
+static void sharpsl_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                                    struct pcmcia_state *state)
+{
+        unsigned short cpr, csr;
+
+        cpr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_CPR);
+
+        write_scoop_reg(&corgiscoop_device.dev, SCOOP_IRM, 0x00FF);
+        write_scoop_reg(&corgiscoop_device.dev, SCOOP_ISR, 0x0000);
+        write_scoop_reg(&corgiscoop_device.dev, SCOOP_IRM, 0x0000);
+        csr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_CSR);
+        if (csr & 0x0004) {
+                /* card eject */
+                write_scoop_reg(&corgiscoop_device.dev, SCOOP_CDR, 0x0000);
+                keep_vs = NO_KEEP_VS;
+        }
+        else if (!(keep_vs & NO_KEEP_VS)) {
+                /* keep vs1,vs2 */
+                write_scoop_reg(&corgiscoop_device.dev, SCOOP_CDR, 0x0000);
+                csr |= keep_vs;
+        }
+        else if (cpr & 0x0003) {
+                /* power on */
+                write_scoop_reg(&corgiscoop_device.dev, SCOOP_CDR, 0x0000);
+                keep_vs = (csr & 0x00C0);
+        }
+        else {
+                /* card detect */
+                write_scoop_reg(&corgiscoop_device.dev, 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;
+
+        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(&corgiscoop_device.dev, SCOOP_MCR)) & ~0x0010;
+        ncpr = (cpr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_CPR)) & ~0x0083;
+        nccr = (ccr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_CCR)) & ~0x0080;
+        nimr = (imr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_IMR)) & ~0x003E;
+
+        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)) {
+                keep_rd = 0;
+        } else if (!keep_rd) {
+                if (nccr & 0x0080)
+                        keep_rd = 1;
+                else
+                        nccr |= 0x0080;
+        }
+
+        if (mcr != nmcr)
+                write_scoop_reg(&corgiscoop_device.dev, SCOOP_MCR, nmcr);
+        if (cpr != ncpr)
+                write_scoop_reg(&corgiscoop_device.dev, SCOOP_CPR, ncpr);
+        if (ccr != nccr)
+                write_scoop_reg(&corgiscoop_device.dev, SCOOP_CCR, nccr);
+        if (imr != nimr)
+                write_scoop_reg(&corgiscoop_device.dev, SCOOP_IMR, nimr);
+
+        local_irq_restore(flags);
+
+        return 0;
+}
+
+static void sharpsl_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+}
+
+static void sharpsl_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+}
+
+static struct pcmcia_low_level sharpsl_pcmcia_ops = {
+        .owner                          = THIS_MODULE,
+        .hw_init                        = sharpsl_pcmcia_hw_init,
+        .hw_shutdown            = sharpsl_pcmcia_hw_shutdown,
+        .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                                     = 1,
+};
+
+static struct platform_device *sharpsl_pcmcia_device;
+
+static int __init sharpsl_pcmcia_init(void)
+{
+        int ret;
+
+        sharpsl_pcmcia_device = kmalloc(sizeof(*sharpsl_pcmcia_device), GFP_KERNEL);
+        if (!sharpsl_pcmcia_device)
+                return -ENOMEM;
+        memset(sharpsl_pcmcia_device, 0, sizeof(*sharpsl_pcmcia_device));
+        sharpsl_pcmcia_device->name = "pxa2xx-pcmcia";
+        sharpsl_pcmcia_device->dev.platform_data = &sharpsl_pcmcia_ops;
+
+        ret = platform_device_register(sharpsl_pcmcia_device);
+        if (ret)
+                kfree(sharpsl_pcmcia_device);
+
+        return ret;
+}
+
+static void __exit sharpsl_pcmcia_exit(void)
+{
+        /*
+         * This call is supposed to free our sharpsl_pcmcia_device.
+         * Unfortunately platform_device don't have a free method, and
+         * we can't assume it's free of any reference at this point so we
+         * can't free it either.
+         */
+        platform_device_unregister(sharpsl_pcmcia_device);
+}
+
+module_init(sharpsl_pcmcia_init);
+module_exit(sharpsl_pcmcia_exit);
+
+MODULE_DESCRIPTION("Sharp SL Series PCMCIA Support");
+MODULE_LICENSE("GPL");