1 files changed, 240 insertions, 0 deletions

diff --git a/drivers/parisc/lasi.c b/drivers/parisc/lasi.c
new file mode 100644
index 000000000000..731855053392
--- /dev/null
+++ b/drivers/parisc/lasi.c
@@ -0,0 +1,240 @@
+/*
+ *      LASI Device Driver
+ *
+ *      (c) Copyright 1999 Red Hat Software
+ *      Portions (c) Copyright 1999 The Puffin Group Inc.
+ *      Portions (c) Copyright 1999 Hewlett-Packard
+ *
+ *      This program is free software; you can redistribute it and/or modify
+ *      it under the terms of the GNU General Public License as published by
+ *      the Free Software Foundation; either version 2 of the License, or
+ *      (at your option) any later version.
+ *
+ *      by Alan Cox <alan@redhat.com> and 
+ *         Alex deVries <alex@onefishtwo.ca>
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <asm/io.h>
+#include <asm/hardware.h>
+#include <asm/led.h>
+
+#include "gsc.h"
+
+
+#define LASI_VER        0xC008  /* LASI Version */
+
+#define LASI_IO_CONF    0x7FFFE /* LASI primary configuration register */
+#define LASI_IO_CONF2   0x7FFFF /* LASI secondary configuration register */
+
+static void lasi_choose_irq(struct parisc_device *dev, void *ctrl)
+{
+        int irq;
+
+        switch (dev->id.sversion) {
+                case 0x74:      irq =  7; break; /* Centronics */
+                case 0x7B:      irq = 13; break; /* Audio */
+                case 0x81:      irq = 14; break; /* Lasi itself */
+                case 0x82:      irq =  9; break; /* SCSI */
+                case 0x83:      irq = 20; break; /* Floppy */
+                case 0x84:      irq = 26; break; /* PS/2 Keyboard */
+                case 0x87:      irq = 18; break; /* ISDN */
+                case 0x8A:      irq =  8; break; /* LAN */
+                case 0x8C:      irq =  5; break; /* RS232 */
+                case 0x8D:      irq = (dev->hw_path == 13) ? 16 : 17; break;
+                                                 /* Telephone */
+                default:        return;          /* unknown */
+        }
+
+        gsc_asic_assign_irq(ctrl, irq, &dev->irq);
+}
+
+static void __init
+lasi_init_irq(struct gsc_asic *this_lasi)
+{
+        unsigned long lasi_base = this_lasi->hpa;
+
+        /* Stop LASI barking for a bit */
+        gsc_writel(0x00000000, lasi_base+OFFSET_IMR);
+
+        /* clear pending interrupts */
+        gsc_readl(lasi_base+OFFSET_IRR);
+
+        /* We're not really convinced we want to reset the onboard
+         * devices. Firmware does it for us...
+         */
+
+        /* Resets */
+        /* gsc_writel(0xFFFFFFFF, lasi_base+0x2000);*/  /* Parallel */
+        if(pdc_add_valid(lasi_base+0x4004) == PDC_OK)
+                gsc_writel(0xFFFFFFFF, lasi_base+0x4004);       /* Audio */
+        /* gsc_writel(0xFFFFFFFF, lasi_base+0x5000);*/  /* Serial */ 
+        /* gsc_writel(0xFFFFFFFF, lasi_base+0x6000);*/  /* SCSI */
+        gsc_writel(0xFFFFFFFF, lasi_base+0x7000);       /* LAN */
+        gsc_writel(0xFFFFFFFF, lasi_base+0x8000);       /* Keyboard */
+        gsc_writel(0xFFFFFFFF, lasi_base+0xA000);       /* FDC */
+        
+        /* Ok we hit it on the head with a hammer, our Dog is now
+        ** comatose and muzzled.  Devices will now unmask LASI
+        ** interrupts as they are registered as irq's in the LASI range.
+        */
+        /* XXX: I thought it was `awks that got `it on the `ead with an
+         * `ammer.  -- willy
+         */
+}
+
+
+/*
+   ** lasi_led_init()
+   ** 
+   ** lasi_led_init() initializes the LED controller on the LASI.
+   **
+   ** Since Mirage and Electra machines use a different LED
+   ** address register, we need to check for these machines 
+   ** explicitly.
+ */
+
+#ifndef CONFIG_CHASSIS_LCD_LED
+
+#define lasi_led_init(x)        /* nothing */
+
+#else
+
+void __init lasi_led_init(unsigned long lasi_hpa)
+{
+        unsigned long datareg;
+
+        switch (CPU_HVERSION) {
+        /* Gecko machines have only one single LED, which can be permanently 
+           turned on by writing a zero into the power control register. */ 
+        case 0x600:             /* Gecko (712/60) */
+        case 0x601:             /* Gecko (712/80) */
+        case 0x602:             /* Gecko (712/100) */
+        case 0x603:             /* Anole 64 (743/64) */
+        case 0x604:             /* Anole 100 (743/100) */
+        case 0x605:             /* Gecko (712/120) */
+                datareg = lasi_hpa + 0x0000C000;
+                gsc_writeb(0, datareg);
+                return; /* no need to register the LED interrupt-function */  
+
+        /* Mirage and Electra machines need special offsets */
+        case 0x60A:             /* Mirage Jr (715/64) */
+        case 0x60B:             /* Mirage 100 */
+        case 0x60C:             /* Mirage 100+ */
+        case 0x60D:             /* Electra 100 */
+        case 0x60E:             /* Electra 120 */
+                datareg = lasi_hpa - 0x00020000;
+                break;
+
+        default:
+                datareg = lasi_hpa + 0x0000C000;
+                break;
+        }
+
+        register_led_driver(DISPLAY_MODEL_LASI, LED_CMD_REG_NONE, datareg);
+}
+#endif
+
+/*
+ * lasi_power_off
+ *
+ * Function for lasi to turn off the power.  This is accomplished by setting a
+ * 1 to PWR_ON_L in the Power Control Register
+ * 
+ */
+
+static unsigned long lasi_power_off_hpa;
+
+static void lasi_power_off(void)
+{
+        unsigned long datareg;
+
+        /* calculate addr of the Power Control Register */
+        datareg = lasi_power_off_hpa + 0x0000C000;
+
+        /* Power down the machine */
+        gsc_writel(0x02, datareg);
+}
+
+int __init
+lasi_init_chip(struct parisc_device *dev)
+{
+        struct gsc_asic *lasi;
+        struct gsc_irq gsc_irq;
+        int ret;
+
+        lasi = kmalloc(sizeof(*lasi), GFP_KERNEL);
+        if (!lasi)
+                return -ENOMEM;
+
+        lasi->name = "Lasi";
+        lasi->hpa = dev->hpa;
+
+        /* Check the 4-bit (yes, only 4) version register */
+        lasi->version = gsc_readl(lasi->hpa + LASI_VER) & 0xf;
+        printk(KERN_INFO "%s version %d at 0x%lx found.\n",
+                lasi->name, lasi->version, lasi->hpa);
+
+        /* initialize the chassis LEDs really early */ 
+        lasi_led_init(lasi->hpa);
+
+        /* Stop LASI barking for a bit */
+        lasi_init_irq(lasi);
+
+        /* the IRQ lasi should use */
+        dev->irq = gsc_alloc_irq(&gsc_irq);
+        if (dev->irq < 0) {
+                printk(KERN_ERR "%s(): cannot get GSC irq\n",
+                                __FUNCTION__);
+                kfree(lasi);
+                return -EBUSY;
+        }
+
+        lasi->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
+
+        ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "lasi", lasi);
+        if (ret < 0) {
+                kfree(lasi);
+                return ret;
+        }
+
+        /* enable IRQ's for devices below LASI */
+        gsc_writel(lasi->eim, lasi->hpa + OFFSET_IAR);
+
+        /* Done init'ing, register this driver */
+        ret = gsc_common_setup(dev, lasi);
+        if (ret) {
+                kfree(lasi);
+                return ret;
+        }    
+
+        gsc_fixup_irqs(dev, lasi, lasi_choose_irq);
+
+        /* initialize the power off function */
+        /* FIXME: Record the LASI HPA for the power off function.  This should
+         * ensure that only the first LASI (the one controlling the power off)
+         * should set the HPA here */
+        lasi_power_off_hpa = lasi->hpa;
+        pm_power_off = lasi_power_off;
+        
+        return ret;
+}
+
+static struct parisc_device_id lasi_tbl[] = {
+        { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00081 },
+        { 0, }
+};
+
+struct parisc_driver lasi_driver = {
+        .name =         "Lasi",
+        .id_table =     lasi_tbl,
+        .probe =        lasi_init_chip,
+};