src/superio/smsc/lpc47m10x/superio.c

   1 /*
   2  * $Header$
   3  *
   4  * superio.c: RAM driver for SMSC LPC47M10X2 Super I/O chip
   5  *
   6  * Copyright 2000  AG Electronics Ltd.
   7  * Copyright 2003-2004 Linux Networx
   8  * Copyright 2004 Tyan
   9  * Copyright (C) 2005 Digital Design Corporation
  10  * Copyright (C) Ron Minnich, LANL
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  25  *
  26  * $Log$
  27  *
  28  */
  29
  30 #include <arch/io.h>
  31 #include <device/device.h>
  32 #include <device/pnp.h>
  33 #include <console/console.h>
  34 #include <device/smbus.h>
  35 #include <string.h>
  36 #include <bitops.h>
  37 #include <uart8250.h>
  38 #include <pc80/keyboard.h>
  39 #include "chip.h"
  40 #include "lpc47m10x.h"
  41
  42 // Forward declarations
  43 static void enable_dev(device_t dev);
  44 void lpc47m10x_pnp_set_resources(device_t dev);
  45 void lpc47m10x_pnp_set_resources(device_t dev);
  46 void lpc47m10x_pnp_enable_resources(device_t dev);
  47 void lpc47m10x_pnp_enable(device_t dev);
  48 static void lpc47m10x_init(device_t dev);
  49
  50 static void pnp_enter_conf_state(device_t dev);
  51 static void pnp_exit_conf_state(device_t dev);
  52 static void dump_pnp_device(device_t dev);
  53
  54
  55 struct chip_operations superio_smsc_lpc47m10x_ops = {
  56         CHIP_NAME("smsc lpc47m10x")
  57         .enable_dev = enable_dev
  58 };
  59
  60 static struct device_operations ops = {
  61         .read_resources   = pnp_read_resources,
  62         .set_resources    = lpc47m10x_pnp_set_resources,
  63         .enable_resources = lpc47m10x_pnp_enable_resources,
  64         .enable           = lpc47m10x_pnp_enable,
  65         .init             = lpc47m10x_init,
  66 };
  67
  68 static struct pnp_info pnp_dev_info[] = {
  69         { &ops, LPC47M10X2_FDC,  PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
  70         { &ops, LPC47M10X2_PP,   PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, },
  71         { &ops, LPC47M10X2_SP1,  PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
  72         { &ops, LPC47M10X2_SP2,  PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, },
  73         { &ops, LPC47M10X2_KBC,  PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, { 0x7ff, 0 }, { 0x7ff, 0x4}, },
  74         { &ops, LPC47M10X2_RT,   PNP_IO0, { 0x780, 0 }, },
  75 };
  76
  77 /**********************************************************************************/
  78 /*                                                              PUBLIC INTERFACE                                                                  */
  79 /**********************************************************************************/
  80
  81 //----------------------------------------------------------------------------------
  82 // Function:            enable_dev
  83 // Parameters:          dev - pointer to structure describing a Super I/O device
  84 // Return Value:        None
  85 // Description:         Create device structures and allocate resources to devices
  86 //                                      specified in the pnp_dev_info array (above).
  87 //
  88 static void enable_dev(device_t dev)
  89 {
  90         pnp_enable_devices(dev, &pnp_ops,
  91                                            sizeof(pnp_dev_info)/sizeof(pnp_dev_info[0]),
  92                                            pnp_dev_info);
  93 }
  94
  95 //----------------------------------------------------------------------------------
  96 // Function:            lpc47m10x_pnp_set_resources
  97 // Parameters:          dev - pointer to structure describing a Super I/O device
  98 // Return Value:        None
  99 // Description:         Configure the specified Super I/O device with the resources
 100 //                                      (I/O space, etc.) that have been allocated for it.
 101 //
 102 void lpc47m10x_pnp_set_resources(device_t dev)
 103 {
 104         pnp_enter_conf_state(dev);
 105         pnp_set_resources(dev);
 106     pnp_exit_conf_state(dev);
 107 }
 108
 109 void lpc47m10x_pnp_enable_resources(device_t dev)
 110 {
 111         pnp_enter_conf_state(dev);
 112     pnp_enable_resources(dev);
 113     pnp_exit_conf_state(dev);
 114 }
 115
 116 void lpc47m10x_pnp_enable(device_t dev)
 117 {
 118         pnp_enter_conf_state(dev);
 119         pnp_set_logical_device(dev);
 120
 121         if(dev->enabled) {
 122                 pnp_set_enable(dev, 1);
 123         }
 124         else {
 125                 pnp_set_enable(dev, 0);
 126         }
 127         pnp_exit_conf_state(dev);
 128 }
 129
 130 //----------------------------------------------------------------------------------
 131 // Function:            lpc47m10x_init
 132 // Parameters:          dev - pointer to structure describing a Super I/O device
 133 // Return Value:        None
 134 // Description:         Initialize the specified Super I/O device.
 135 //                                      Devices other than COM ports and the keyboard controller are
 136 //                                      ignored. For COM ports, we configure the baud rate.
 137 //
 138 static void lpc47m10x_init(device_t dev)
 139 {
 140         struct superio_smsc_lpc47m10x_config *conf = dev->chip_info;
 141         struct resource *res0, *res1;
 142
 143         if (!dev->enabled)
 144                 return;
 145
 146         switch(dev->path.u.pnp.device) {
 147         case LPC47M10X2_SP1:
 148                 res0 = find_resource(dev, PNP_IDX_IO0);
 149                 init_uart8250(res0->base, &conf->com1);
 150                 break;
 151
 152         case LPC47M10X2_SP2:
 153                 res0 = find_resource(dev, PNP_IDX_IO0);
 154                 init_uart8250(res0->base, &conf->com2);
 155                 break;
 156
 157         case LPC47M10X2_KBC:
 158                 res0 = find_resource(dev, PNP_IDX_IO0);
 159                 res1 = find_resource(dev, PNP_IDX_IO1);
 160                 init_pc_keyboard(res0->base, res1->base, &conf->keyboard);
 161                 break;
 162         }
 163 }
 164
 165 /**********************************************************************************/
 166 /*                                                              PRIVATE FUNCTIONS                                                             */
 167 /**********************************************************************************/
 168
 169 //----------------------------------------------------------------------------------
 170 // Function:            pnp_enter_conf_state
 171 // Parameters:          dev - pointer to structure describing a Super I/O device
 172 // Return Value:        None
 173 // Description:         Enable access to the LPC47M10X2's configuration registers.
 174 //
 175 static void pnp_enter_conf_state(device_t dev)
 176 {
 177         outb(0x55, dev->path.u.pnp.port);
 178 }
 179
 180 //----------------------------------------------------------------------------------
 181 // Function:            pnp_exit_conf_state
 182 // Parameters:          dev - pointer to structure describing a Super I/O device
 183 // Return Value:        None
 184 // Description:         Disable access to the LPC47M10X2's configuration registers.
 185 //
 186 static void pnp_exit_conf_state(device_t dev)
 187 {
 188     outb(0xaa, dev->path.u.pnp.port);
 189 }
 190
 191 #if 0
 192 //----------------------------------------------------------------------------------
 193 // Function:            dump_pnp_device
 194 // Parameters:          dev - pointer to structure describing a Super I/O device
 195 // Return Value:        None
 196 // Description:         Print the values of all of the LPC47M10X2's configuration registers.
 197 //                                      NOTE: The LPC47M10X2 must be in configuration mode when this
 198 //                                                function is called.
 199 //
 200 static void dump_pnp_device(device_t dev)
 201 {
 202     int register_index;
 203     print_debug("\r\n");
 204
 205     for(register_index = 0; register_index <= LPC47M10X2_MAX_CONFIG_REGISTER; register_index++) {
 206         uint8_t register_value;
 207
 208         if ((register_index & 0x0f) == 0) {
 209                 print_debug_hex8(register_index);
 210                 print_debug_char(':');
 211         }
 212
 213                 // Skip over 'register' that would cause exit from configuration mode
 214             if (register_index == 0xaa)
 215                         register_value = 0xaa;
 216                 else
 217                 register_value = pnp_read_config(dev, register_index);
 218
 219         print_debug_char(' ');
 220         print_debug_hex8(register_value);
 221         if ((register_index & 0x0f) == 0x0f) {
 222                 print_debug("\r\n");
 223         }
 224     }
 225
 226         print_debug("\r\n");
 227 }
 228 #endif