diff options
author | Libreboot Contributor <contributor@libreboot.org> | 2020-04-02 20:59:23 +0200 |
---|---|---|
committer | Libreboot Contributor <contributor@libreboot.org> | 2020-04-02 20:59:43 +0200 |
commit | a2f4bef6de0e1f5770d489e861c78890f81229c1 (patch) | |
tree | bc74ce87d44cfcae1eecff62c0fbf6a97b1812fc /i18n/fr_FR/resources/utilities/i945-pwm/i945-pwm.c | |
parent | c6cb6cf4769cd535eee9abfd41fbf717a51d067c (diff) | |
download | librebootfr-a2f4bef6de0e1f5770d489e861c78890f81229c1.tar.gz librebootfr-a2f4bef6de0e1f5770d489e861c78890f81229c1.zip |
link to french version of gplv3 at the top of i18n/fr_FR/COPYING . Also, we remove files that we haven't translated yet, it weights a lot.
Diffstat (limited to 'i18n/fr_FR/resources/utilities/i945-pwm/i945-pwm.c')
-rw-r--r-- | i18n/fr_FR/resources/utilities/i945-pwm/i945-pwm.c | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/i18n/fr_FR/resources/utilities/i945-pwm/i945-pwm.c b/i18n/fr_FR/resources/utilities/i945-pwm/i945-pwm.c deleted file mode 100644 index e3dc5742..00000000 --- a/i18n/fr_FR/resources/utilities/i945-pwm/i945-pwm.c +++ /dev/null @@ -1,163 +0,0 @@ -/* - Copyright (C) 2014 Michał Masłowski <mtjm@mtjm.eu> - - 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 3 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, see <http://www.gnu.org/licenses/>. -*/ - -/* Try several backlight PWM frequencies and duty cycles to see which - expose the noise on X60 with coreboot. -*/ - -#include <assert.h> -#include <fcntl.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <sys/mman.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <pci/pci.h> - -static struct pci_access *pacc; -static uint32_t *map; -static int fd; - -#define REGISTER 0x61254 - -static void -init (void) -{ - fd = -1; - /* Find the device. */ - struct pci_dev *dev; - pacc = pci_alloc (); - pacc->writeable = 1; - pci_init (pacc); - pci_scan_bus (pacc); - for (dev = pacc->devices; dev != NULL; dev = dev->next) - { - pci_fill_info (dev, PCI_FILL_IDENT | PCI_FILL_BASES); - if (dev->vendor_id != 0x8086 || dev->device_id != 0x27a2) - continue; - break; - } - if (dev == NULL) - { - fprintf (stderr, "Device not found.\n"); - goto fail; - } - /* Map a part of its MMIO. */ - fd = open ("/dev/mem", O_RDWR); - if (fd == -1) - { - fprintf (stderr, "Cannot open memory. Are you root?\n"); - goto fail; - } - map = mmap (NULL, 4096, PROT_READ | PROT_WRITE, MAP_SHARED, fd, dev->base_addr[0] + (REGISTER & (~4095))); - if (map != MAP_FAILED) - return; - else - perror ("mmap failed"); - fail: - if (pacc != NULL) - pci_cleanup (pacc); - if (fd != -1) - close (fd); - exit (1); -} - -static void -set_pwm (uint16_t freq, uint16_t duty) -{ - assert (duty <= freq); - map[((REGISTER - 4) & 4095) >> 2] = 0x80000000; - map[(REGISTER & 4095) >> 2] = ((freq | 1) << 16) | duty; -} - -int -main (void) -{ - init (); - int exponent = 8; - int diff = 0; - int divisor = 2; - uint16_t freq = 0x61; - uint16_t duties[] = { -#if 1 - // i945 - 0xf, - 0x13, - 0x19, - 0x1f, - 0x23, - 0x29, - 0x2f, - 0x35, - 0x39, - 0x3f, - 0x45, - 0x4b, - 0x4f, - 0x55, - 0x5b, - 0x61 -#else - // gm45 - 0x2, - 0x4, - 0x5, - 0x7, - 0x9, - 0xb, - 0xd, - 0x11, - 0x14, - 0x17, - 0x1c, - 0x20, - 0x27, - 0x31, - 0x41, - 0x61, -#endif - }; -#if 1 - for (unsigned int di = 0; di < sizeof (duties) / sizeof (duties[0]); di++) - { - uint16_t duty = duties[di]; -#else - for (uint16_t duty = 0; duty < 0x61; duty++) - { -#endif -#if 0 - } -#endif - uint16_t pwm_freq = (freq + diff) << exponent; - pwm_freq += (pwm_freq >> divisor); - //pwm_freq |= 0x33; - uint16_t pwm_duty = (duty + diff) << exponent; - pwm_duty += (pwm_duty >> divisor); - //pwm_duty |= 0x32; - set_pwm (pwm_freq, pwm_duty); - sleep (1); - } - if (pacc != NULL) - pci_cleanup (pacc); - if (map != NULL) - munmap (map, 4096); - if (fd != -1) - close (fd); - return 0; -} |