| Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| H. Peter Anvin | 1965aae | 2008-10-22 22:26:29 -0700 | [diff] [blame] | 2 | #ifndef _ASM_X86_SERIAL_H |
| 3 | #define _ASM_X86_SERIAL_H |
| Roland Dreier | 217d115 | 2007-10-15 13:57:46 +0200 | [diff] [blame] | 4 | |
| 5 | /* |
| 6 | * This assumes you have a 1.8432 MHz clock for your UART. |
| 7 | * |
| 8 | * It'd be nice if someone built a serial card with a 24.576 MHz |
| 9 | * clock, since the 16550A is capable of handling a top speed of 1.5 |
| Ingo Molnar | 196cf35 | 2014-09-06 10:12:19 +0200 | [diff] [blame] | 10 | * megabits/second; but this requires a faster clock. |
| Roland Dreier | 217d115 | 2007-10-15 13:57:46 +0200 | [diff] [blame] | 11 | */ |
| Ingo Molnar | 196cf35 | 2014-09-06 10:12:19 +0200 | [diff] [blame] | 12 | #define BASE_BAUD (1843200/16) |
| Roland Dreier | 217d115 | 2007-10-15 13:57:46 +0200 | [diff] [blame] | 13 | |
| 14 | /* Standard COM flags (except for COM4, because of the 8514 problem) */ |
| Valentin Rothberg | 507224a | 2015-04-12 17:37:24 +0200 | [diff] [blame] | 15 | #ifdef CONFIG_SERIAL_8250_DETECT_IRQ |
| Andy Shevchenko | 079119a | 2015-03-11 13:52:53 +0200 | [diff] [blame] | 16 | # define STD_COMX_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ) |
| 17 | # define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | 0 | UPF_AUTO_IRQ) |
| Thomas Gleixner | 96a388d | 2007-10-11 11:20:03 +0200 | [diff] [blame] | 18 | #else |
| Andy Shevchenko | 079119a | 2015-03-11 13:52:53 +0200 | [diff] [blame] | 19 | # define STD_COMX_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | 0 ) |
| 20 | # define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | 0 | 0 ) |
| Thomas Gleixner | 96a388d | 2007-10-11 11:20:03 +0200 | [diff] [blame] | 21 | #endif |
| Roland Dreier | 217d115 | 2007-10-15 13:57:46 +0200 | [diff] [blame] | 22 | |
| Ingo Molnar | 196cf35 | 2014-09-06 10:12:19 +0200 | [diff] [blame] | 23 | #define SERIAL_PORT_DFNS \ |
| 24 | /* UART CLK PORT IRQ FLAGS */ \ |
| 25 | { .uart = 0, BASE_BAUD, 0x3F8, 4, STD_COMX_FLAGS }, /* ttyS0 */ \ |
| 26 | { .uart = 0, BASE_BAUD, 0x2F8, 3, STD_COMX_FLAGS }, /* ttyS1 */ \ |
| 27 | { .uart = 0, BASE_BAUD, 0x3E8, 4, STD_COMX_FLAGS }, /* ttyS2 */ \ |
| 28 | { .uart = 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS }, /* ttyS3 */ |
| Roland Dreier | 217d115 | 2007-10-15 13:57:46 +0200 | [diff] [blame] | 29 | |
| H. Peter Anvin | 1965aae | 2008-10-22 22:26:29 -0700 | [diff] [blame] | 30 | #endif /* _ASM_X86_SERIAL_H */ |