diff options
Diffstat (limited to 'drivers/staging/panel')
| -rw-r--r-- | drivers/staging/panel/panel.c | 50 |
1 files changed, 48 insertions, 2 deletions
diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c index c2747bc88c6f..dd7d3fde9699 100644 --- a/drivers/staging/panel/panel.c +++ b/drivers/staging/panel/panel.c @@ -243,6 +243,7 @@ static unsigned char lcd_bits[LCD_PORTS][LCD_BITS][BIT_STATES]; */ #define LCD_PROTO_PARALLEL 0 #define LCD_PROTO_SERIAL 1 +#define LCD_PROTO_TI_DA8XX_LCD 2 /* * LCD character sets @@ -440,7 +441,8 @@ MODULE_PARM_DESC(lcd_type, static int lcd_proto = -1; module_param(lcd_proto, int, 0000); -MODULE_PARM_DESC(lcd_proto, "LCD communication: 0=parallel (//), 1=serial"); +MODULE_PARM_DESC(lcd_proto, "LCD communication: 0=parallel (//), 1=serial," + "2=TI LCD Interface"); static int lcd_charset = -1; module_param(lcd_charset, int, 0000); @@ -797,6 +799,26 @@ static void lcd_write_data_p8(int data) spin_unlock(&pprt_lock); } +/* send a command to the TI LCD panel */ +static void lcd_write_cmd_tilcd(int cmd) +{ + spin_lock(&pprt_lock); + /* present the data to the control port */ + w_ctr(pprt, cmd); + udelay(60); + spin_unlock(&pprt_lock); +} + +/* send data to the TI LCD panel */ +static void lcd_write_data_tilcd(int data) +{ + spin_lock(&pprt_lock); + /* present the data to the data port */ + w_dtr(pprt, data); + udelay(60); + spin_unlock(&pprt_lock); +} + static void lcd_gotoxy(void) { lcd_write_cmd(0x80 /* set DDRAM address */ @@ -870,6 +892,26 @@ static void lcd_clear_fast_p8(void) lcd_gotoxy(); } +/* fills the display with spaces and resets X/Y */ +static void lcd_clear_fast_tilcd(void) +{ + int pos; + lcd_addr_x = lcd_addr_y = 0; + lcd_gotoxy(); + + spin_lock(&pprt_lock); + for (pos = 0; pos < lcd_height * lcd_hwidth; pos++) { + /* present the data to the data port */ + w_dtr(pprt, ' '); + udelay(60); + } + + spin_unlock(&pprt_lock); + + lcd_addr_x = lcd_addr_y = 0; + lcd_gotoxy(); +} + /* clears the display and resets X/Y */ static void lcd_clear_display(void) { @@ -1396,7 +1438,7 @@ void lcd_init(void) if (lcd_da_pin == PIN_NOT_SET) lcd_da_pin = DEFAULT_LCD_PIN_SDA; - } else { /* PARALLEL */ + } else if (lcd_proto == LCD_PROTO_PARALLEL) { /* PARALLEL */ lcd_write_cmd = lcd_write_cmd_p8; lcd_write_data = lcd_write_data_p8; lcd_clear_fast = lcd_clear_fast_p8; @@ -1407,6 +1449,10 @@ void lcd_init(void) lcd_rs_pin = DEFAULT_LCD_PIN_RS; if (lcd_rw_pin == PIN_NOT_SET) lcd_rw_pin = DEFAULT_LCD_PIN_RW; + } else { + lcd_write_cmd = lcd_write_cmd_tilcd; + lcd_write_data = lcd_write_data_tilcd; + lcd_clear_fast = lcd_clear_fast_tilcd; } if (lcd_bl_pin == PIN_NOT_SET) |