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clipzip clean up lcd driver a bit

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consolidate some of the lcd cmd / data calls

Change-Id: I2e2ccc7833806f7bf931138a04c48aa55ef4a13d
This commit is contained in:
William Wilgus 2024-03-30 22:37:34 -04:00 • committed by William Wilgus
parent 8bdf08cd2d
commit 4f652b49ae
1 changed files with 36 additions and 58 deletions
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94
firmware/target/arm/as3525/sansa-clipzip/lcd-clipzip.c
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@ -116,6 +116,13 @@ static void lcd_write_dat(uint8_t data)
SSP_DATA = data;
}
/* writes 2 data bytes to the LCD */
static void lcd_write_dat_word(uint8_t data1, uint8_t data2)
{
lcd_write_dat(data1);
lcd_write_dat(data2);
}
/* writes both a command and data value to the lcd */
static void lcd_write(uint8_t cmd, uint8_t data)
{
@ -167,8 +174,7 @@ static void lcd_init_type0(void)
/* writes a table entry (for type 1 LCDs) */
static void lcd_write_nibbles(uint8_t val)
{
lcd_write_dat((val >> 4) & 0x0F);
lcd_write_dat((val >> 0) & 0x0F);
lcd_write_dat_word((val >> 4) & 0x0F, (val >> 0) & 0x0F);
}
/* Initialises lcd type 1
@ -191,38 +197,27 @@ static void lcd_init_type1(void)
};
int i;
lcd_write_cmd(0x02);
lcd_write_dat(0x00);
lcd_write(0x02, 0x00);
lcd_write_cmd(0x01);
lcd_write_cmd(0x03);
lcd_write_dat(0x00);
lcd_write(0x03, 0x00);
lcd_write_cmd(0x04);
lcd_write_dat(0x03);
lcd_write(0x04, 0x03);
lcd_write_cmd(0x05);
lcd_write_dat(0x00); /* 0x08 results in BGR colour */
lcd_write(0x05, 0x00); /* 0x08 results in BGR colour */
lcd_write_cmd(0x06);
lcd_write_dat(0x00);
lcd_write(0x06, 0x00);
lcd_write_cmd(0x07);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_dat(0x04);
lcd_write_dat(0x1F);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_dat(0x05);
lcd_write(0x07, 0x00);
lcd_write_dat_word(0x00, 0x04);
lcd_write_dat_word(0x1F, 0x00);
lcd_write_dat_word(0x00, 0x05);
lcd_write_dat(0x0F);
lcd_write_cmd(0x08);
lcd_write_dat(0x01);
lcd_write(0x08, 0x01);
lcd_write_cmd(0x09);
lcd_write_dat(0x07);
lcd_write(0x09, 0x07);
lcd_write_cmd(0x0A);
lcd_write_nibbles(0);
@ -230,10 +225,8 @@ static void lcd_init_type1(void)
lcd_write_nibbles(0);
lcd_write_nibbles(LCD_HEIGHT - 1);
lcd_write_cmd(0x0B);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write(0x0B, 0x00);
lcd_write_dat_word(0x00, 0x00);
lcd_write_dat(0x00);
lcd_write_cmd(0x0E);
@ -241,38 +234,28 @@ static void lcd_init_type1(void)
lcd_write_nibbles(0x25);
lcd_write_nibbles(0x3F);
lcd_write_cmd(0x0F);
lcd_write_dat(0x0A);
lcd_write_dat(0x0A);
lcd_write_dat(0x0A);
lcd_write(0x0F, 0x0A);
lcd_write_dat_word(0x0A, 0x0A);
lcd_write_cmd(0x1C);
lcd_write_dat(0x08);
lcd_write(0x1C, 0x08);
lcd_write_cmd(0x1D);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write_dat(0x00);
lcd_write(0x1D, 0x00);
lcd_write_dat_word(0x00, 0x00);
lcd_write_cmd(0x1E);
lcd_write_dat(0x05);
lcd_write(0x1E, 0x05);
lcd_write_cmd(0x1F);
lcd_write_dat(0x00);
lcd_write(0x1F, 0x00);
lcd_write_cmd(0x30);
lcd_write_dat(0x10);
lcd_write(0x30, 0x10);
lcd_write_cmd(0x3A);
for (i = 0; i < 128; i++) {
lcd_write_nibbles(curve[i]);
}
lcd_write_cmd(0x3C);
lcd_write_dat(0x00);
lcd_write(0x3C, 0x00);
lcd_write_cmd(0x3D);
lcd_write_dat(0x00);
lcd_write(0x3D, 0x00);
}
#ifdef HAVE_LCD_ENABLE
@ -305,18 +288,14 @@ void lcd_enable(bool on)
}
else {
if (on) {
lcd_write_cmd(0x03);
lcd_write_dat(0x00);
lcd_write(0x03, 0x00);
lcd_write_cmd(0x02);
lcd_write_dat(0x01);
lcd_write(0x02, 0x01);
}
else {
lcd_write_cmd(0x02);
lcd_write_dat(0x00);
lcd_write(0x02, 0x00);
lcd_write_cmd(0x03);
lcd_write_dat(0x01);
lcd_write(0x03, 0x01);
}
}
@ -398,8 +377,7 @@ void lcd_write_data(const fb_data *data, int count)
while (count--) {
pixel = *data++;
lcd_write_dat((pixel >> 8) & 0xFF);
lcd_write_dat((pixel >> 0) & 0xFF);
lcd_write_dat_word((pixel >> 8) & 0xFF, (pixel >> 0) & 0xFF);
}
}