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Apply FS#10447 - e200v2 lcd driver cleanup by Michael Chicoine

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22210 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Bertrik Sikken 2009-08-08 14:37:42 +00:00
parent 367d8148a7
commit 978f3798a9
1 changed files with 26 additions and 15 deletions
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41
firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
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@ -36,8 +36,8 @@
static bool display_on = false; /* is the display turned on? */ static bool display_on = false; /* is the display turned on? */
static bool display_flipped = false; static bool display_flipped = false;
/* we need to write a red pixel for correct button reads /* we need to write a red pixel for correct button reads
* (see lcd_button_support()), but that must not happen while the lcd is updating * (see lcd_button_support()), but that must not happen while the lcd is
* so block lcd_button_support the during updates */ * updating so block lcd_button_support the during updates */
static volatile bool lcd_busy = false; static volatile bool lcd_busy = false;
/* register defines */ /* register defines */
@ -113,13 +113,17 @@ static void ams3525_dbop_init(void)
DBOP_TIMPOL_01 = 0xe167e167; DBOP_TIMPOL_01 = 0xe167e167;
DBOP_TIMPOL_23 = 0xe167006e; DBOP_TIMPOL_23 = 0xe167006e;
DBOP_CTRL = (1<<18)|(1<<12)|(8<<0); /* short count, 16bit write, read-timing =8 */
/* short count, 16bit write, read-timing =8 */
DBOP_CTRL = (1<<18)|(1<<12)|(8<<0);
GPIOB_AFSEL = 0xfc; GPIOB_AFSEL = 0xfc;
GPIOC_AFSEL = 0xff; GPIOC_AFSEL = 0xff;
DBOP_TIMPOL_23 = 0x6000e; DBOP_TIMPOL_23 = 0x6000e;
DBOP_CTRL = (1<<18)|(1<<16)|(1<<12)|(8<<0);/* short count,write enable, 16bit write, read-timing =8 */
/* short count,write enable, 16bit write, read-timing =8 */
DBOP_CTRL = (1<<18)|(1<<16)|(1<<12)|(8<<0);
DBOP_TIMPOL_01 = 0x6e167; DBOP_TIMPOL_01 = 0x6e167;
DBOP_TIMPOL_23 = 0xa167e06f; DBOP_TIMPOL_23 = 0xa167e06f;
@ -203,9 +207,12 @@ static void lcd_window(int xmin, int ymin, int xmax, int ymax)
} }
else else
{ {
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax)); lcd_write_reg(R_HORIZ_RAM_ADDR_POS,
lcd_write_reg(R_VERT_RAM_ADDR_POS, ((LCD_HEIGHT-1 - ymin) << 8) | (LCD_HEIGHT-1 - ymax)); ((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax));
lcd_write_reg(R_RAM_ADDR_SET, ((LCD_HEIGHT-1 - ymin) << 8) | (LCD_WIDTH-1 - xmin)); lcd_write_reg(R_VERT_RAM_ADDR_POS,
((LCD_HEIGHT-1 - ymin) << 8) | (LCD_HEIGHT-1 - ymax));
lcd_write_reg(R_RAM_ADDR_SET,
((LCD_HEIGHT-1 - ymin) << 8) | (LCD_WIDTH-1 - xmin));
} }
} }
@ -232,7 +239,8 @@ static void _display_on(void)
lcd_write_reg(R_COMPARE_REG1, 0); lcd_write_reg(R_COMPARE_REG1, 0);
lcd_write_reg(R_COMPARE_REG2, 0); lcd_write_reg(R_COMPARE_REG2, 0);
lcd_write_reg(R_DISP_CONTROL1, 0x0000 | r_disp_control_rev); /* GON = 0, DTE = 0, D1-0 = 00b */ /* GON = 0, DTE = 0, D1-0 = 00b */
lcd_write_reg(R_DISP_CONTROL1, 0x0000 | r_disp_control_rev);
/* Front porch lines: 2; Back porch lines: 2; */ /* Front porch lines: 2; Back porch lines: 2; */
lcd_write_reg(R_DISP_CONTROL2, 0x0203); lcd_write_reg(R_DISP_CONTROL2, 0x0203);
@ -369,10 +377,10 @@ extern void lcd_write_yuv420_lines(unsigned char const * const src[3],
int width, int width,
int stride); int stride);
extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3], extern void lcd_write_yuv420_lines_odither(unsigned char const * const src[3],
int width, int width,
int stride, int stride,
int x_screen, /* To align dither pattern */ int x_screen, /* To align dither pattern */
int y_screen); int y_screen);
void lcd_yuv_set_options(unsigned options) void lcd_yuv_set_options(unsigned options)
{ {
@ -383,9 +391,11 @@ static void lcd_window_blit(int xmin, int ymin, int xmax, int ymax)
{ {
if (!display_flipped) if (!display_flipped)
{ {
lcd_write_reg(R_HORIZ_RAM_ADDR_POS, ((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax)); lcd_write_reg(R_HORIZ_RAM_ADDR_POS,
((LCD_WIDTH-1 - xmin) << 8) | (LCD_WIDTH-1 - xmax));
lcd_write_reg(R_VERT_RAM_ADDR_POS, (ymax << 8) | ymin); lcd_write_reg(R_VERT_RAM_ADDR_POS, (ymax << 8) | ymin);
lcd_write_reg(R_RAM_ADDR_SET, (ymin << 8) | (LCD_WIDTH-1 - xmin)); lcd_write_reg(R_RAM_ADDR_SET,
(ymin << 8) | (LCD_WIDTH-1 - xmin));
} }
else else
{ {
@ -530,7 +540,8 @@ void lcd_update_rect(int x, int y, int width, int height)
lcd_busy = false; lcd_busy = false;
} /* lcd_update_rect */ } /* lcd_update_rect */
/* writes one read pixel outside the visible area, needed for correct dbop reads */ /* writes one red pixel outside the visible area, needed for correct
* dbop reads */
bool lcd_button_support(void) bool lcd_button_support(void)
{ {
fb_data data = (0xf<<12); fb_data data = (0xf<<12);