src/superio/smsc/lpc47m15x/superio.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2009 coresystems GmbH
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  18  */
  19
  20 /* RAM driver for the SMSC LPC47M15X Super I/O chip */
  21
  22 #include <arch/io.h>
  23 #include <device/device.h>
  24 #include <device/pnp.h>
  25 #include <console/console.h>
  26 #include <device/smbus.h>
  27 #include <string.h>
  28 #include <bitops.h>
  29 #include <uart8250.h>
  30 #include <pc80/keyboard.h>
  31 #include <stdlib.h>
  32 #include "chip.h"
  33 #include "lpc47m15x.h"
  34
  35 /* Forward declarations */
  36 static void enable_dev(device_t dev);
  37 static void lpc47m15x_pnp_set_resources(device_t dev);
  38 static void lpc47m15x_pnp_enable_resources(device_t dev);
  39 static void lpc47m15x_pnp_enable(device_t dev);
  40 static void lpc47m15x_init(device_t dev);
  41
  42 static void pnp_enter_conf_state(device_t dev);
  43 static void pnp_exit_conf_state(device_t dev);
  44
  45 struct chip_operations superio_smsc_lpc47m15x_ops = {
  46         CHIP_NAME("SMSC LPC47M15x/192/997 Super I/O")
  47         .enable_dev = enable_dev
  48 };
  49
  50 static struct device_operations ops = {
  51         .read_resources   = pnp_read_resources,
  52         .set_resources    = lpc47m15x_pnp_set_resources,
  53         .enable_resources = lpc47m15x_pnp_enable_resources,
  54         .enable           = lpc47m15x_pnp_enable,
  55         .init             = lpc47m15x_init,
  56 };
  57
  58 static struct pnp_info pnp_dev_info[] = {
  59         { &ops, LPC47M15X_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
  60         { &ops, LPC47M15X_PP,  PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, {0x07f8, 0}, },
  61         { &ops, LPC47M15X_SP1, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
  62         { &ops, LPC47M15X_SP2, PNP_IO0 | PNP_IRQ0, {0x07f8, 0}, },
  63         { &ops, LPC47M15X_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, {0x07ff, 0}, {0x07ff, 4}, },
  64 };
  65
  66 static void enable_dev(device_t dev)
  67 {
  68         pnp_enable_devices(dev, &pnp_ops,
  69                            ARRAY_SIZE(pnp_dev_info), pnp_dev_info);
  70 }
  71
  72 static void lpc47m15x_pnp_set_resources(device_t dev)
  73 {
  74         pnp_enter_conf_state(dev);
  75         pnp_set_resources(dev);
  76         pnp_exit_conf_state(dev);
  77 }
  78
  79 static void lpc47m15x_pnp_enable_resources(device_t dev)
  80 {
  81         pnp_enter_conf_state(dev);
  82         pnp_enable_resources(dev);
  83         pnp_exit_conf_state(dev);
  84 }
  85
  86 static void lpc47m15x_pnp_enable(device_t dev)
  87 {
  88         pnp_enter_conf_state(dev);
  89         pnp_set_logical_device(dev);
  90         pnp_set_enable(dev, (dev->enabled) ? 1 : 0);
  91         pnp_exit_conf_state(dev);
  92 }
  93
  94 static void lpc47m15x_init(device_t dev)
  95 {
  96         struct superio_smsc_lpc47m15x_config *conf = dev->chip_info;
  97         struct resource *res0;
  98
  99         if (!dev->enabled)
 100                 return;
 101
 102         switch(dev->path.pnp.device) {
 103         case LPC47M15X_SP1:
 104                 res0 = find_resource(dev, PNP_IDX_IO0);
 105                 init_uart8250(res0->base, &conf->com1);
 106                 break;
 107         case LPC47M15X_SP2:
 108                 res0 = find_resource(dev, PNP_IDX_IO0);
 109                 init_uart8250(res0->base, &conf->com2);
 110                 break;
 111         case LPC47M15X_KBC:
 112                 pc_keyboard_init(&conf->keyboard);
 113                 break;
 114         }
 115 }
 116
 117 static void pnp_enter_conf_state(device_t dev)
 118 {
 119         outb(0x55, dev->path.pnp.port);
 120 }
 121
 122 static void pnp_exit_conf_state(device_t dev)
 123 {
 124         outb(0xaa, dev->path.pnp.port);
 125 }