| /* |
| * Copyright 2016 Google Inc. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * 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., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <stdint.h> |
| |
| #include "base/container_of.h" |
| #include "base/xalloc.h" |
| #include "drivers/board/smaug/panel.h" |
| |
| static int smaug_panel_enable(MonitorOps *me) |
| { |
| SmaugPanel *panel = container_of(me, SmaugPanel, ops); |
| |
| return // Brightness mode: BRTHI/BRTLO. |
| i2c_write8(panel->i2c, panel->chip, 0x10, 0x01) || |
| // maxcurrent: 20ma. |
| i2c_write8(panel->i2c, panel->chip, 0x11, 0x05) || |
| // ov: 2v, all 6 current sinks enabled. |
| i2c_write8(panel->i2c, panel->chip, 0x14, 0x7f) || |
| // Backlight on. |
| i2c_write8(panel->i2c, panel->chip, 0x00, 0x01) || |
| // Brightness: BRT[11:4] 0x000: 0%, 0xFFF: 100% |
| i2c_write8(panel->i2c, panel->chip, 0x04, 0x55); |
| } |
| |
| static int smaug_panel_disable(MonitorOps *me) |
| { |
| SmaugPanel *panel = container_of(me, SmaugPanel, ops); |
| |
| // Backlight off. |
| return i2c_write8(panel->i2c, panel->chip, 0x00, 0x00); |
| } |
| |
| SmaugPanel *new_smaug_panel(I2cOps *i2c, uint8_t chip) |
| { |
| SmaugPanel *panel = xzalloc(sizeof(*panel)); |
| |
| panel->ops.enable = &smaug_panel_enable; |
| panel->ops.disable = &smaug_panel_disable; |
| |
| panel->i2c = i2c; |
| panel->chip = chip; |
| |
| return panel; |
| } |