Felix Held | 3f3eca9 | 2020-01-23 17:12:32 +0100 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | /* This file is part of the coreboot project. */ |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 3 | |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 4 | #include <device/device.h> |
| 5 | #include <device/pnp.h> |
Nico Huber | 1c81128 | 2013-06-15 20:33:44 +0200 | [diff] [blame] | 6 | #include <superio/conf_mode.h> |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 7 | #include <stdint.h> |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 8 | #include <pc80/keyboard.h> |
Elyes HAOUAS | 2329a25 | 2019-05-15 22:11:18 +0200 | [diff] [blame] | 9 | |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 10 | #include "w83627uhg.h" |
| 11 | |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 12 | /* |
| 13 | * Set the UART clock source. |
| 14 | * |
| 15 | * Possible UART clock source speeds are: |
| 16 | * |
| 17 | * 0 = 1.8462 MHz (default) |
| 18 | * 1 = 2 MHz |
| 19 | * 2 = 24 MHz |
| 20 | * 3 = 14.769 MHz |
| 21 | * |
| 22 | * The faster clocks allow for BAUD rates up to 2mbits. |
| 23 | * |
| 24 | * Warning: The kernel will need to be adjusted since it assumes |
| 25 | * a 1.8462 MHz clock. |
| 26 | */ |
Edward O'Callaghan | f21bdc3 | 2014-10-21 07:43:41 +1100 | [diff] [blame] | 27 | static void set_uart_clock_source(struct device *dev, u8 uart_clock) |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 28 | { |
| 29 | u8 value; |
| 30 | |
Nico Huber | 13dc976 | 2013-06-15 19:33:15 +0200 | [diff] [blame] | 31 | pnp_enter_conf_mode(dev); |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 32 | pnp_set_logical_device(dev); |
| 33 | value = pnp_read_config(dev, 0xf0); |
| 34 | value &= ~0x03; |
| 35 | value |= (uart_clock & 0x03); |
| 36 | pnp_write_config(dev, 0xf0, value); |
Nico Huber | 13dc976 | 2013-06-15 19:33:15 +0200 | [diff] [blame] | 37 | pnp_exit_conf_mode(dev); |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 38 | } |
| 39 | |
Edward O'Callaghan | f21bdc3 | 2014-10-21 07:43:41 +1100 | [diff] [blame] | 40 | static void w83627uhg_init(struct device *dev) |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 41 | { |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 42 | |
| 43 | if (!dev->enabled) |
| 44 | return; |
| 45 | |
Elyes HAOUAS | 0ce41f1 | 2018-11-13 10:03:31 +0100 | [diff] [blame] | 46 | switch (dev->path.pnp.device) { |
Zheng Bao | 9db833b | 2009-12-28 09:59:44 +0000 | [diff] [blame] | 47 | case W83627UHG_SP1: |
Dave Frodin | 6c6acd7 | 2013-12-26 08:17:16 -0700 | [diff] [blame] | 48 | set_uart_clock_source(dev, 0); |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 49 | break; |
| 50 | case W83627UHG_SP2: |
Dave Frodin | 6c6acd7 | 2013-12-26 08:17:16 -0700 | [diff] [blame] | 51 | set_uart_clock_source(dev, 0); |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 52 | break; |
| 53 | case W83627UHG_SP3: |
Dave Frodin | 6c6acd7 | 2013-12-26 08:17:16 -0700 | [diff] [blame] | 54 | set_uart_clock_source(dev, 0); |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 55 | break; |
| 56 | case W83627UHG_SP4: |
Dave Frodin | 6c6acd7 | 2013-12-26 08:17:16 -0700 | [diff] [blame] | 57 | set_uart_clock_source(dev, 0); |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 58 | break; |
| 59 | case W83627UHG_SP5: |
Dave Frodin | 6c6acd7 | 2013-12-26 08:17:16 -0700 | [diff] [blame] | 60 | set_uart_clock_source(dev, 0); |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 61 | break; |
| 62 | case W83627UHG_SP6: |
Dave Frodin | 6c6acd7 | 2013-12-26 08:17:16 -0700 | [diff] [blame] | 63 | set_uart_clock_source(dev, 0); |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 64 | break; |
| 65 | case W83627UHG_KBC: |
Timothy Pearson | 448e386 | 2015-11-24 14:12:01 -0600 | [diff] [blame] | 66 | pc_keyboard_init(NO_AUX_DEVICE); |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 67 | break; |
| 68 | } |
| 69 | } |
| 70 | |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 71 | static struct device_operations ops = { |
| 72 | .read_resources = pnp_read_resources, |
Nico Huber | 0b2ee93 | 2013-06-15 19:58:35 +0200 | [diff] [blame] | 73 | .set_resources = pnp_set_resources, |
| 74 | .enable_resources = pnp_enable_resources, |
| 75 | .enable = pnp_enable, |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 76 | .init = w83627uhg_init, |
Nico Huber | 1c81128 | 2013-06-15 20:33:44 +0200 | [diff] [blame] | 77 | .ops_pnp_mode = &pnp_conf_mode_8787_aa, |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 78 | }; |
| 79 | |
| 80 | static struct pnp_info pnp_dev_info[] = { |
Felix Held | 8c85880 | 2018-07-06 20:22:08 +0200 | [diff] [blame] | 81 | { NULL, W83627UHG_FDC, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, 0x07f8, }, |
| 82 | { NULL, W83627UHG_PP, PNP_IO0 | PNP_IRQ0 | PNP_DRQ0, 0x07f8, }, |
| 83 | { NULL, W83627UHG_SP1, PNP_IO0 | PNP_IRQ0, 0x07f8, }, |
| 84 | { NULL, W83627UHG_SP2, PNP_IO0 | PNP_IRQ0, 0x07f8, }, |
| 85 | { NULL, W83627UHG_KBC, PNP_IO0 | PNP_IO1 | PNP_IRQ0 | PNP_IRQ1, |
| 86 | 0x07ff, 0x07ff, }, |
| 87 | { NULL, W83627UHG_SP3, PNP_IO0 | PNP_IRQ0, 0x07f8, }, |
| 88 | { NULL, W83627UHG_GPIO3_4, }, |
| 89 | { NULL, W83627UHG_WDTO_PLED_GPIO5_6, }, |
| 90 | { NULL, W83627UHG_GPIO1_2, }, |
| 91 | { NULL, W83627UHG_ACPI, PNP_IRQ0, }, |
| 92 | { NULL, W83627UHG_HWM, PNP_IO0 | PNP_IRQ0, 0x0ff8, }, |
| 93 | { NULL, W83627UHG_PECI_SST, }, |
| 94 | { NULL, W83627UHG_SP4, PNP_IO0 | PNP_IRQ0, 0x07f8, }, |
| 95 | { NULL, W83627UHG_SP5, PNP_IO0 | PNP_IRQ0, 0x07f8, }, |
| 96 | { NULL, W83627UHG_SP6, PNP_IO0 | PNP_IRQ0, 0x07f8, }, |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 97 | }; |
| 98 | |
Edward O'Callaghan | f21bdc3 | 2014-10-21 07:43:41 +1100 | [diff] [blame] | 99 | static void enable_dev(struct device *dev) |
Dan Lykowski | fdbb8d8 | 2009-01-06 00:33:30 +0000 | [diff] [blame] | 100 | { |
| 101 | pnp_enable_devices(dev, &ops, ARRAY_SIZE(pnp_dev_info), pnp_dev_info); |
| 102 | } |
| 103 | |
| 104 | struct chip_operations superio_winbond_w83627uhg_ops = { |
| 105 | CHIP_NAME("Winbond W83627UHG Super I/O") |
| 106 | .enable_dev = enable_dev, |
| 107 | }; |