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Remote LCD communication driver for X5, very loosely based on patch FS#5634 by Rani Hod
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10331 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing
parent
b98b895bab
commit
40a3fd6938
5 changed files with 220 additions and 0 deletions
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@ -21,5 +21,7 @@
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void __backlight_on(void);
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void __backlight_off(void);
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void __remote_backlight_on(void);
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void __remote_backlight_off(void);
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#endif
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@ -35,3 +35,13 @@ void __backlight_off(void)
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pcf50606_write(0x38, 0x80); /* Backlight OFF, GPO1INV=1, GPO1ACT=000 */
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set_irq_level(level);
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}
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void __remote_backlight_on(void)
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{
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and_l(~0x00200000, &GPIO_OUT);
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}
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void __remote_backlight_off(void)
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{
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or_l(0x00200000, &GPIO_OUT);
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}
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30
firmware/target/coldfire/iaudio/x5/lcd-remote-target.h
Executable file
30
firmware/target/coldfire/iaudio/x5/lcd-remote-target.h
Executable file
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@ -0,0 +1,30 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2006 by Linus Nielsen Feltzing
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef LCD_REMOTE_TARGET_H
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#define LCD_REMOTE_TARGET_H
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void lcd_remote_write_command(int cmd);
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void lcd_remote_write_command_ex(int cmd, int data);
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void lcd_remote_write_data(const unsigned char* p_bytes, int count);
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bool remote_detect(void);
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void lcd_remote_powersave(bool on);
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void lcd_remote_set_contrast(int val);
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void remote_set_row_and_col(int row, int col);
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#endif
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177
firmware/target/coldfire/iaudio/x5/lcd-remote-x5.c
Executable file
177
firmware/target/coldfire/iaudio/x5/lcd-remote-x5.c
Executable file
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@ -0,0 +1,177 @@
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2006 by Linus Nielsen Feltzing
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "config.h"
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#include "system.h"
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#include "kernel.h"
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/* The LCD in the iAudio M3/M5/X5 remote control is a Tomato LSI 0350 */
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#define LCD_SET_DUTY_RATIO 0x48
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#define LCD_SELECT_ADC 0xa0
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#define LCD_SELECT_SHL 0xc0
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#define LCD_SET_COM0 0x44
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#define LCD_OSC_ON 0xab
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#define LCD_SELECT_DCDC 0x64
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#define LCD_SELECT_RES 0x20
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#define LCD_SET_VOLUME 0x81
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#define LCD_SET_BIAS 0x50
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#define LCD_CONTROL_POWER 0x28
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#define LCD_DISPLAY_ON 0xae
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#define LCD_SET_INITLINE 0x40
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#define LCD_SET_COLUMN 0x10
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#define LCD_SET_PAGE 0xb0
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#define LCD_SET_GRAY 0x88
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#define LCD_SET_PWM_FRC 0x90
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#define LCD_SET_POWER_SAVE 0xa8
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#define CS_LO and_l(~0x00000020, &GPIO1_OUT)
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#define CS_HI or_l(0x00000020, &GPIO1_OUT)
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#define CLK_LO and_l(~0x00004000, &GPIO_OUT)
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#define CLK_HI or_l(0x00004000, &GPIO_OUT)
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#define DATA_LO and_l(~0x00002000, &GPIO_OUT)
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#define DATA_HI or_l(0x00002000, &GPIO_OUT)
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#define RS_LO and_l(~0x00008000, &GPIO_OUT)
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#define RS_HI or_l(0x00008000, &GPIO_OUT)
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#define LCD_REMOTE_DEFAULT_CONTRAST 0x18;
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static int cached_contrast = LCD_REMOTE_DEFAULT_CONTRAST;
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static bool remote_initialized = false;
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static void remote_write(unsigned char byte, bool is_command)
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{
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int i;
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CS_LO;
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if (is_command)
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RS_LO;
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else
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RS_HI;
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for (i = 0x80; i; i >>= 1)
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{
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CLK_LO;
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if (i & byte)
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DATA_HI;
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else
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DATA_LO;
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CLK_HI;
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}
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CS_HI;
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}
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void lcd_remote_write_command(int cmd)
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{
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remote_write(cmd, true);
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}
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void lcd_remote_write_command_ex(int cmd, int data)
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{
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remote_write(cmd, true);
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remote_write(data, true);
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}
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void lcd_remote_write_data(const unsigned char* p_bytes, int count)
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{
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while(count--)
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remote_write(*p_bytes++, false);
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}
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void remote_set_row_and_col(int row, int col)
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{
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lcd_remote_write_command(LCD_SET_PAGE | (row & 0xf));
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lcd_remote_write_command_ex(LCD_SET_COLUMN | ((col >> 4) & 0xf),
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col & 0xf);
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}
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int lcd_remote_default_contrast(void)
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{
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return LCD_REMOTE_DEFAULT_CONTRAST;
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}
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void lcd_remote_powersave(bool on)
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{
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if (on)
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lcd_remote_write_command(LCD_SET_POWER_SAVE | 1);
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else
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lcd_remote_write_command(LCD_SET_POWER_SAVE | 1);
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}
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void lcd_remote_set_contrast(int val)
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{
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cached_contrast = val;
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lcd_remote_write_command_ex(LCD_SET_VOLUME, val);
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}
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bool remote_detect(void)
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{
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return (GPIO_READ & 0x01000000);
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}
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void remote_init(void)
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{
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or_l(0x0000e000, &GPIO_OUT);
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or_l(0x0000e000, &GPIO_ENABLE);
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or_l(0x0000e000, &GPIO_FUNCTION);
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or_l(0x00000020, &GPIO1_OUT);
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or_l(0x00000020, &GPIO1_ENABLE);
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or_l(0x00000020, &GPIO1_FUNCTION);
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sleep(10);
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lcd_remote_write_command(LCD_SET_DUTY_RATIO);
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lcd_remote_write_command(0x70); /* 1/128 */
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lcd_remote_write_command(LCD_SELECT_ADC | 1); /* Reverse direction */
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lcd_remote_write_command(LCD_SELECT_SHL | 8); /* Reverse direction */
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lcd_remote_write_command(LCD_SET_COM0);
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lcd_remote_write_command(0x00);
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lcd_remote_write_command(LCD_OSC_ON);
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lcd_remote_write_command(LCD_SELECT_DCDC | 2); /* DC/DC 5xboost */
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lcd_remote_write_command(LCD_SELECT_RES | 7); /* Regulator resistor: 7.2 */
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lcd_remote_write_command(LCD_SET_BIAS | 6); /* 1/11 */
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lcd_remote_write_command(LCD_CONTROL_POWER | 7); /* All circuits ON */
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sleep(30);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 0, 0x00);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 1, 0x00);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 2, 0x0c);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 3, 0x00);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 4, 0xcc);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 5, 0x00);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 6, 0xcc);
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lcd_remote_write_command_ex(LCD_SET_GRAY | 7, 0x0c);
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lcd_remote_write_command(LCD_SET_PWM_FRC | 6); /* 4FRC + 12PWM */
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lcd_remote_write_command(LCD_DISPLAY_ON | 1); /* display on */
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remote_initialized = true;
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lcd_remote_set_contrast(cached_contrast);
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}
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