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M:Robe 500 Backlight: Add setup based on OF - purpose of operations are a mystery, but needed when loading from flash.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29231 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Karl Kurbjun 2011-02-06 20:44:57 +00:00
parent f65365fc75
commit 916a9f0969
1 changed files with 35 additions and 3 deletions
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36
firmware/target/arm/tms320dm320/mrobe-500/backlight-mr500.c
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@ -31,13 +31,26 @@
short read_brightness = 0x0; short read_brightness = 0x0;
static const char commands [][2] =
{ {0xA0, 0x00},
{0xA1, 0x00},
{0xA2, 0x00},
{0xA3, 0x00},
{0xA4, 0x00},
{0xA5, 0x00},
{0xA6, 0x00},
{0xA7, 0x00},
{0xA8, 0x00},
{0xB9, 0x40},
};
static void _backlight_write_brightness(int brightness) static void _backlight_write_brightness(int brightness)
{ {
uint8_t bl_command[] = {0xA4, 0x00, brightness, 0xA4}; uint8_t bl_command[] = {0xA4, 0x00, brightness, 0xA4};
uint8_t bl_read[] = {0xA8, 0x00}; spi_block_transfer(SPI_target_BACKLIGHT, commands[8], 2, (char *)&read_brightness, 2);
spi_block_transfer(SPI_target_BACKLIGHT, bl_read, 2, (char*)&read_brightness, 2); // bl_command[3] = (char) read_brightness;
spi_block_transfer(SPI_target_BACKLIGHT, bl_command, 4, 0, 0); spi_block_transfer(SPI_target_BACKLIGHT, bl_command, 4, 0, 0);
} }
@ -71,6 +84,25 @@ void __backlight_dim(bool dim_now)
bool _backlight_init(void) bool _backlight_init(void)
{ {
short read_value;
IO_GIO_BITCLR2 = (1 << 5); /* output low (backlight/lcd on) */
spi_block_transfer(SPI_target_BACKLIGHT, commands[6], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[8], 2, (char*)&read_value, 2);
if( (read_value & 0xFF) < 0xD0 )
{
spi_block_transfer(SPI_target_BACKLIGHT, commands[3], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[4], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[9], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[0], 2, 0, 0);
}
spi_block_transfer(SPI_target_BACKLIGHT, commands[2], 2, 0, 0);
_backlight_set_brightness(backlight_brightness); _backlight_set_brightness(backlight_brightness);
return true; return true;
} }