1 files changed, 202 insertions, 0 deletions

diff --git a/drivers/pcmcia/pxa2xx_mainstone.c b/drivers/pcmcia/pxa2xx_mainstone.c
new file mode 100644
index 000000000000..5309734e1687
--- /dev/null
+++ b/drivers/pcmcia/pxa2xx_mainstone.c
@@ -0,0 +1,202 @@
+/*
+ * linux/drivers/pcmcia/pxa2xx_mainstone.c
+ *
+ * Mainstone PCMCIA specific routines.
+ *
+ * Created:     May 12, 2004
+ * Author:      Nicolas Pitre
+ * Copyright:   MontaVista Software Inc.
+ *
+ * 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 <pcmcia/ss.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+
+#include <asm/arch/pxa-regs.h>
+#include <asm/arch/mainstone.h>
+
+#include "soc_common.h"
+
+
+static struct pcmcia_irqs irqs[] = {
+        { 0, MAINSTONE_S0_CD_IRQ, "PCMCIA0 CD" },
+        { 1, MAINSTONE_S1_CD_IRQ, "PCMCIA1 CD" },
+        { 0, MAINSTONE_S0_STSCHG_IRQ, "PCMCIA0 STSCHG" },
+        { 1, MAINSTONE_S1_STSCHG_IRQ, "PCMCIA1 STSCHG" },
+};
+
+static int mst_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
+{
+        /*
+         * 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(GPIO85_nPCE_1) |
+                GPIO_bit(GPIO54_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(GPIO85_nPCE_1_MD);
+        pxa_gpio_mode(GPIO54_nPCE_2_MD);
+        pxa_gpio_mode(GPIO79_pSKTSEL_MD);
+        pxa_gpio_mode(GPIO55_nPREG_MD);
+        pxa_gpio_mode(GPIO56_nPWAIT_MD);
+        pxa_gpio_mode(GPIO57_nIOIS16_MD);
+
+        skt->irq = (skt->nr == 0) ? MAINSTONE_S0_IRQ : MAINSTONE_S1_IRQ;
+        return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs));
+}
+
+static void mst_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
+{
+        soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs));
+}
+
+static unsigned long mst_pcmcia_status[2];
+
+static void mst_pcmcia_socket_state(struct soc_pcmcia_socket *skt,
+                                    struct pcmcia_state *state)
+{
+        unsigned long status, flip;
+
+        status = (skt->nr == 0) ? MST_PCMCIA0 : MST_PCMCIA1;
+        flip = (status ^ mst_pcmcia_status[skt->nr]) & MST_PCMCIA_nSTSCHG_BVD1;
+
+        /*
+         * Workaround for STSCHG which can't be deasserted:
+         * We therefore disable/enable corresponding IRQs
+         * as needed to avoid IRQ locks.
+         */
+        if (flip) {
+                mst_pcmcia_status[skt->nr] = status;
+                if (status & MST_PCMCIA_nSTSCHG_BVD1)
+                        enable_irq( (skt->nr == 0) ? MAINSTONE_S0_STSCHG_IRQ
+                                                   : MAINSTONE_S1_STSCHG_IRQ );
+                else
+                        disable_irq( (skt->nr == 0) ? MAINSTONE_S0_STSCHG_IRQ
+                                                    : MAINSTONE_S1_STSCHG_IRQ );
+        }
+
+        state->detect = (status & MST_PCMCIA_nCD) ? 0 : 1;
+        state->ready  = (status & MST_PCMCIA_nIRQ) ? 1 : 0;
+        state->bvd1   = (status & MST_PCMCIA_nSTSCHG_BVD1) ? 1 : 0;
+        state->bvd2   = (status & MST_PCMCIA_nSPKR_BVD2) ? 1 : 0;
+        state->vs_3v  = (status & MST_PCMCIA_nVS1) ? 0 : 1;
+        state->vs_Xv  = (status & MST_PCMCIA_nVS2) ? 0 : 1;
+        state->wrprot = 0;  /* not available */
+}
+
+static int mst_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
+                                       const socket_state_t *state)
+{
+        unsigned long power = 0;
+        int ret = 0;
+
+        switch (state->Vcc) {
+        case 0:  power |= MST_PCMCIA_PWR_VCC_0;  break;
+        case 33: power |= MST_PCMCIA_PWR_VCC_33; break;
+        case 50: power |= MST_PCMCIA_PWR_VCC_50; break;
+        default:
+                 printk(KERN_ERR "%s(): bad Vcc %u\n",
+                                 __FUNCTION__, state->Vcc);
+                 ret = -1;
+        }
+
+        switch (state->Vpp) {
+        case 0:   power |= MST_PCMCIA_PWR_VPP_0;   break;
+        case 120: power |= MST_PCMCIA_PWR_VPP_120; break;
+        default:
+                  if(state->Vpp == state->Vcc) {
+                          power |= MST_PCMCIA_PWR_VPP_VCC;
+                  } else {
+                          printk(KERN_ERR "%s(): bad Vpp %u\n",
+                                          __FUNCTION__, state->Vpp);
+                          ret = -1;
+                  }
+        }
+
+        if (state->flags & SS_RESET)
+               power |= MST_PCMCIA_RESET;
+
+        switch (skt->nr) {
+        case 0:  MST_PCMCIA0 = power; break;
+        case 1:  MST_PCMCIA1 = power; break;
+        default: ret = -1;
+        }
+
+        return ret;
+}
+
+static void mst_pcmcia_socket_init(struct soc_pcmcia_socket *skt)
+{
+}
+
+static void mst_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt)
+{
+}
+
+static struct pcmcia_low_level mst_pcmcia_ops = {
+        .owner                  = THIS_MODULE,
+        .hw_init                = mst_pcmcia_hw_init,
+        .hw_shutdown            = mst_pcmcia_hw_shutdown,
+        .socket_state           = mst_pcmcia_socket_state,
+        .configure_socket       = mst_pcmcia_configure_socket,
+        .socket_init            = mst_pcmcia_socket_init,
+        .socket_suspend         = mst_pcmcia_socket_suspend,
+        .nr                     = 2,
+};
+
+static struct platform_device *mst_pcmcia_device;
+
+static int __init mst_pcmcia_init(void)
+{
+        int ret;
+
+        mst_pcmcia_device = kmalloc(sizeof(*mst_pcmcia_device), GFP_KERNEL);
+        if (!mst_pcmcia_device)
+                return -ENOMEM;
+        memset(mst_pcmcia_device, 0, sizeof(*mst_pcmcia_device));
+        mst_pcmcia_device->name = "pxa2xx-pcmcia";
+        mst_pcmcia_device->dev.platform_data = &mst_pcmcia_ops;
+
+        ret = platform_device_register(mst_pcmcia_device);
+        if (ret)
+                kfree(mst_pcmcia_device);
+
+        return ret;
+}
+
+static void __exit mst_pcmcia_exit(void)
+{
+        /*
+         * This call is supposed to free our mst_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(mst_pcmcia_device);
+}
+
+module_init(mst_pcmcia_init);
+module_exit(mst_pcmcia_exit);
+
+MODULE_LICENSE("GPL");