/* * This file is part of the LinuxBIOS project. * * Copyright (C) 2000 AG Electronics Ltd. * Copyright (C) 2003-2004 Linux Networx * Copyright (C) 2004 Tyan * Copyright (C) 2005 Digital Design Corporation * * 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. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ /* RAM driver for SMSC LPC47B272 Super I/O chip. */ #include #include #include #include #include #include #include #include #include #include "chip.h" #include "lpc47b272.h" // Forward declarations static void enable_dev(device_t dev); void lpc47b272_pnp_set_resources(device_t dev); void lpc47b272_pnp_set_resources(device_t dev); void lpc47b272_pnp_enable_resources(device_t dev); void lpc47b272_pnp_enable(device_t dev); static void lpc47b272_init(device_t dev); static void pnp_enter_conf_state(device_t dev); static void pnp_exit_conf_state(device_t dev); static void dump_pnp_device(device_t dev); struct chip_operations superio_smsc_lpc47b272_ops = { CHIP_NAME("SMSC LPC47B272 Super I/O") .enable_dev = enable_dev }; static struct device_operations ops = { .read_resources = pnp_read_resources, .set_resources = lpc47b272_pnp_set_resources, .enable_resources = lpc47b272_pnp_enable_resources, .enable = lpc47b272_pnp_enable, .init = lpc47b272_init, }; static struct pnp_info pnp_dev_info[] = { { &ops, LPC47B272_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, }, { &ops, LPC47B272_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, { 0x07f8, 0}, }, { &ops, LPC47B272_SP1, PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, }, { &ops, LPC47B272_SP2, PNP_IO0 | PNP_IRQ0, { 0x7f8, 0 }, }, { &ops, LPC47B272_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, { 0x7ff, 0 }, { 0x7ff, 0x4}, }, { &ops, LPC47B272_RT, PNP_IO0, { 0x780, 0 }, }, }; /**********************************************************************************/ /* PUBLIC INTERFACE */ /**********************************************************************************/ //---------------------------------------------------------------------------------- // Function: enable_dev // Parameters: dev - pointer to structure describing a Super I/O device // Return Value: None // Description: Create device structures and allocate resources to devices // specified in the pnp_dev_info array (above). // static void enable_dev(device_t dev) { pnp_enable_devices(dev, &pnp_ops, sizeof(pnp_dev_info)/sizeof(pnp_dev_info[0]), pnp_dev_info); } //---------------------------------------------------------------------------------- // Function: lpc47b272_pnp_set_resources // Parameters: dev - pointer to structure describing a Super I/O device // Return Value: None // Description: Configure the specified Super I/O device with the resources // (I/O space, etc.) that have been allocated for it. // void lpc47b272_pnp_set_resources(device_t dev) { pnp_enter_conf_state(dev); pnp_set_resources(dev); pnp_exit_conf_state(dev); } void lpc47b272_pnp_enable_resources(device_t dev) { pnp_enter_conf_state(dev); pnp_enable_resources(dev); pnp_exit_conf_state(dev); } void lpc47b272_pnp_enable(device_t dev) { pnp_enter_conf_state(dev); pnp_set_logical_device(dev); if(dev->enabled) { pnp_set_enable(dev, 1); } else { pnp_set_enable(dev, 0); } pnp_exit_conf_state(dev); } //---------------------------------------------------------------------------------- // Function: lpc47b272_init // Parameters: dev - pointer to structure describing a Super I/O device // Return Value: None // Description: Initialize the specified Super I/O device. // Devices other than COM ports and the keyboard controller are // ignored. For COM ports, we configure the baud rate. // static void lpc47b272_init(device_t dev) { struct superio_smsc_lpc47b272_config *conf = dev->chip_info; struct resource *res0, *res1; if (!dev->enabled) return; switch(dev->path.u.pnp.device) { case LPC47B272_SP1: res0 = find_resource(dev, PNP_IDX_IO0); init_uart8250(res0->base, &conf->com1); break; case LPC47B272_SP2: res0 = find_resource(dev, PNP_IDX_IO0); init_uart8250(res0->base, &conf->com2); break; case LPC47B272_KBC: res0 = find_resource(dev, PNP_IDX_IO0); res1 = find_resource(dev, PNP_IDX_IO1); init_pc_keyboard(res0->base, res1->base, &conf->keyboard); break; } } /**********************************************************************************/ /* PRIVATE FUNCTIONS */ /**********************************************************************************/ //---------------------------------------------------------------------------------- // Function: pnp_enter_conf_state // Parameters: dev - pointer to structure describing a Super I/O device // Return Value: None // Description: Enable access to the LPC47B272's configuration registers. // static void pnp_enter_conf_state(device_t dev) { outb(0x55, dev->path.u.pnp.port); } //---------------------------------------------------------------------------------- // Function: pnp_exit_conf_state // Parameters: dev - pointer to structure describing a Super I/O device // Return Value: None // Description: Disable access to the LPC47B272's configuration registers. // static void pnp_exit_conf_state(device_t dev) { outb(0xaa, dev->path.u.pnp.port); } #if 0 //---------------------------------------------------------------------------------- // Function: dump_pnp_device // Parameters: dev - pointer to structure describing a Super I/O device // Return Value: None // Description: Print the values of all of the LPC47B272's configuration registers. // NOTE: The LPC47B272 must be in configuration mode when this // function is called. // static void dump_pnp_device(device_t dev) { int register_index; print_debug("\r\n"); for(register_index = 0; register_index <= LPC47B272_MAX_CONFIG_REGISTER; register_index++) { uint8_t register_value; if ((register_index & 0x0f) == 0) { print_debug_hex8(register_index); print_debug_char(':'); } // Skip over 'register' that would cause exit from configuration mode if (register_index == 0xaa) register_value = 0xaa; else register_value = pnp_read_config(dev, register_index); print_debug_char(' '); print_debug_hex8(register_value); if ((register_index & 0x0f) == 0x0f) { print_debug("\r\n"); } } print_debug("\r\n"); } #endif