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Diffstat (limited to 'firmware/target/coldfire/iaudio/lcd-remote-iaudio.c')
-rw-r--r--firmware/target/coldfire/iaudio/lcd-remote-iaudio.c257
1 files changed, 17 insertions, 240 deletions
diff --git a/firmware/target/coldfire/iaudio/lcd-remote-iaudio.c b/firmware/target/coldfire/iaudio/lcd-remote-iaudio.c
index 5a03dc6180..8fa473fbdd 100644
--- a/firmware/target/coldfire/iaudio/lcd-remote-iaudio.c
+++ b/firmware/target/coldfire/iaudio/lcd-remote-iaudio.c
@@ -60,234 +60,6 @@ static int cached_contrast = DEFAULT_REMOTE_CONTRAST_SETTING;
bool remote_initialized = false;
-/* Standard low-level byte writer. Requires CLK high on entry */
-static inline void _write_byte(unsigned data)
-{
- asm volatile (
- "move.l (%[gpo0]), %%d0 \n" /* Get current state of data line */
- "and.l %[dbit], %%d0 \n"
- "beq.s 1f \n" /* and set it as previous-state bit */
- "bset #8, %[data] \n"
- "1: \n"
- "move.l %[data], %%d0 \n" /* Compute the 'bit derivative', i.e. a value */
- "lsr.l #1, %%d0 \n" /* with 1's where the data changes from the */
- "eor.l %%d0, %[data] \n" /* previous state, and 0's where it doesn't */
- "swap %[data] \n" /* Shift data to upper byte */
- "lsl.l #8, %[data] \n"
-
- "move.l %[cbit], %%d1 \n" /* Prepare mask for flipping CLK */
- "or.l %[dbit], %%d1 \n" /* and DATA at once */
-
- "lsl.l #1,%[data] \n" /* Shift out MSB */
- "bcc.s 1f \n"
- "eor.l %%d1, (%[gpo0]) \n" /* 1: Flip both CLK and DATA */
- ".word 0x51fa \n" /* (trapf.w - shadow next insn) */
- "1: \n"
- "eor.l %[cbit], (%[gpo0]) \n" /* else flip CLK only */
- "eor.l %[cbit], (%[gpo0]) \n" /* Flip CLK again */
-
- "lsl.l #1,%[data] \n" /* ..unrolled.. */
- "bcc.s 1f \n"
- "eor.l %%d1, (%[gpo0]) \n"
- ".word 0x51fa \n"
- "1: \n"
- "eor.l %[cbit], (%[gpo0]) \n"
- "eor.l %[cbit], (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %%d1, (%[gpo0]) \n"
- ".word 0x51fa \n"
- "1: \n"
- "eor.l %[cbit], (%[gpo0]) \n"
- "eor.l %[cbit], (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %%d1, (%[gpo0]) \n"
- ".word 0x51fa \n"
- "1: \n"
- "eor.l %[cbit], (%[gpo0]) \n"
- "eor.l %[cbit], (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %%d1, (%[gpo0]) \n"
- ".word 0x51fa \n"
- "1: \n"
- "eor.l %[cbit], (%[gpo0]) \n"
- "eor.l %[cbit], (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %%d1, (%[gpo0]) \n"
- ".word 0x51fa \n"
- "1: \n"
- "eor.l %[cbit], (%[gpo0]) \n"
- "eor.l %[cbit], (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %%d1, (%[gpo0]) \n"
- ".word 0x51fa \n"
- "1: \n"
- "eor.l %[cbit], (%[gpo0]) \n"
- "eor.l %[cbit], (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %%d1, (%[gpo0]) \n"
- ".word 0x51fa \n"
- "1: \n"
- "eor.l %[cbit], (%[gpo0]) \n"
- "eor.l %[cbit], (%[gpo0]) \n"
- : /* outputs */
- [data]"+d"(data)
- : /* inputs */
- [gpo0]"a"(&GPIO_OUT),
- [cbit]"d"(0x00004000),
- [dbit]"d"(0x00002000)
- : /* clobbers */
- "d0", "d1"
- );
-}
-
-/* Fast low-level byte writer. Don't use with high CPU clock.
- * Requires CLK high on entry */
-static inline void _write_fast(unsigned data)
-{
- asm volatile (
- "move.w %%sr,%%d3 \n" /* Get current interrupt level */
- "move.w #0x2700,%%sr \n" /* Disable interrupts */
-
- "move.l (%[gpo0]), %%d0 \n" /* Get current state of data port */
- "move.l %%d0, %%d1 \n"
- "and.l %[dbit], %%d1 \n" /* Check current state of data line */
- "beq.s 1f \n" /* and set it as previous-state bit */
- "bset #8, %[data] \n"
- "1: \n"
- "move.l %[data], %%d1 \n" /* Compute the 'bit derivative', i.e. a value */
- "lsr.l #1, %%d1 \n" /* with 1's where the data changes from the */
- "eor.l %%d1, %[data] \n" /* previous state, and 0's where it doesn't */
- "swap %[data] \n" /* Shift data to upper byte */
- "lsl.l #8, %[data] \n"
-
- "move.l %%d0, %%d1 \n" /* precalculate opposite state of clock line */
- "eor.l %[cbit], %%d1 \n"
-
- "lsl.l #1,%[data] \n" /* Shift out MSB */
- "bcc.s 1f \n"
- "eor.l %[dbit], %%d0 \n" /* 1: Flip data bit */
- "eor.l %[dbit], %%d1 \n" /* for both clock states */
- "1: \n"
- "move.l %%d1, (%[gpo0]) \n" /* Output new state and set CLK */
- "move.l %%d0, (%[gpo0]) \n" /* reset CLK */
-
- "lsl.l #1,%[data] \n" /* ..unrolled.. */
- "bcc.s 1f \n"
- "eor.l %[dbit], %%d0 \n"
- "eor.l %[dbit], %%d1 \n"
- "1: \n"
- "move.l %%d1, (%[gpo0]) \n"
- "move.l %%d0, (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %[dbit], %%d0 \n"
- "eor.l %[dbit], %%d1 \n"
- "1: \n"
- "move.l %%d1, (%[gpo0]) \n"
- "move.l %%d0, (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %[dbit], %%d0 \n"
- "eor.l %[dbit], %%d1 \n"
- "1: \n"
- "move.l %%d1, (%[gpo0]) \n"
- "move.l %%d0, (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %[dbit], %%d0 \n"
- "eor.l %[dbit], %%d1 \n"
- "1: \n"
- "move.l %%d1, (%[gpo0]) \n"
- "move.l %%d0, (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %[dbit], %%d0 \n"
- "eor.l %[dbit], %%d1 \n"
- "1: \n"
- "move.l %%d1, (%[gpo0]) \n"
- "move.l %%d0, (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %[dbit], %%d0 \n"
- "eor.l %[dbit], %%d1 \n"
- "1: \n"
- "move.l %%d1, (%[gpo0]) \n"
- "move.l %%d0, (%[gpo0]) \n"
-
- "lsl.l #1,%[data] \n"
- "bcc.s 1f \n"
- "eor.l %[dbit], %%d0 \n"
- "eor.l %[dbit], %%d1 \n"
- "1: \n"
- "move.l %%d1, (%[gpo0]) \n"
- "move.l %%d0, (%[gpo0]) \n"
-
- "move.w %%d3, %%sr \n" /* Restore interrupt level */
- : /* outputs */
- [data]"+d"(data)
- : /* inputs */
- [gpo0]"a"(&GPIO_OUT),
- [cbit]"d"(0x00004000),
- [dbit]"d"(0x00002000)
- : /* clobbers */
- "d0", "d1", "d2", "d3"
- );
-}
-
-void lcd_remote_write_command(int cmd)
-{
- RS_LO;
- CS_LO;
- _write_byte(cmd);
- CS_HI;
-}
-
-void lcd_remote_write_command_ex(int cmd, int data)
-{
- RS_LO;
- CS_LO;
- _write_byte(cmd);
- _write_byte(data);
- CS_HI;
-}
-
-void lcd_remote_write_data(const fb_remote_data *p_words, int count)
-{
- const unsigned char *p_bytes = (const unsigned char *)p_words;
- const unsigned char *p_end = (const unsigned char *)(p_words + count);
-
- RS_HI;
- CS_LO;
- if (cpu_frequency < 50000000)
- {
- while (p_bytes < p_end)
- _write_fast(*p_bytes++);
- }
- else
- {
- while (p_bytes < p_end)
- _write_byte(*p_bytes++);
- }
- CS_HI;
-}
-
int lcd_remote_default_contrast(void)
{
return DEFAULT_REMOTE_CONTRAST_SETTING;
@@ -350,7 +122,7 @@ void lcd_remote_on(void)
lcd_remote_write_command_ex(LCD_SET_GRAY | 6, 0xcc);
lcd_remote_write_command_ex(LCD_SET_GRAY | 7, 0x0c);
- lcd_remote_write_command(LCD_SET_PWM_FRC | 6); /* 4FRC + 12PWM */
+ lcd_remote_write_command(LCD_SET_PWM_FRC | 6); /* 3FRC + 12PWM */
lcd_remote_write_command(LCD_DISPLAY_ON | 1); /* display on */
@@ -439,17 +211,18 @@ void lcd_remote_init_device(void)
/* Update the display.
This must be called after all other LCD functions that change the display. */
-void lcd_remote_update(void) ICODE_ATTR;
void lcd_remote_update(void)
{
int y;
- if(remote_initialized) {
- for(y = 0;y < LCD_REMOTE_FBHEIGHT;y++) {
+ if(remote_initialized)
+ {
+ for(y = 0;y < LCD_REMOTE_FBHEIGHT;y++)
+ {
/* Copy display bitmap to hardware.
The COM48-COM63 lines are not connected so we have to skip
them. Further, the column address doesn't wrap, so we
have to update one page at a time. */
- lcd_remote_write_command(LCD_SET_PAGE | (y>5?y+2:y));
+ lcd_remote_write_command(LCD_SET_PAGE | (y > 5 ? y + 2 : y));
lcd_remote_write_command_ex(LCD_SET_COLUMN | 0, 0);
lcd_remote_write_data(lcd_remote_framebuffer[y], LCD_REMOTE_WIDTH);
}
@@ -457,10 +230,10 @@ void lcd_remote_update(void)
}
/* Update a fraction of the display. */
-void lcd_remote_update_rect(int, int, int, int) ICODE_ATTR;
void lcd_remote_update_rect(int x, int y, int width, int height)
{
- if(remote_initialized) {
+ if(remote_initialized)
+ {
int ymax;
/* The Y coordinates have to work on even 8 pixel rows */
@@ -478,8 +251,8 @@ void lcd_remote_update_rect(int x, int y, int width, int height)
COM48-COM63 are not connected, so we need to skip those */
for (; y <= ymax; y++)
{
- lcd_remote_write_command(LCD_SET_PAGE |
- ((y > 5?y + 2:y) & 0xf));
+ lcd_remote_write_command(LCD_SET_PAGE
+ | ((y > 5 ? y + 2 : y) & 0xf));
lcd_remote_write_command_ex(LCD_SET_COLUMN | ((x >> 4) & 0xf),
x & 0xf);
@@ -498,12 +271,16 @@ void lcd_remote_set_invert_display(bool yesno)
void lcd_remote_set_flip(bool yesno)
{
cached_flip = yesno;
- if(remote_initialized) {
- if(yesno) {
+ if(remote_initialized)
+ {
+ if(yesno)
+ {
lcd_remote_write_command(LCD_SELECT_ADC | 0);
lcd_remote_write_command(LCD_SELECT_SHL | 0);
lcd_remote_write_command_ex(LCD_SET_COM0, 16);
- } else {
+ }
+ else
+ {
lcd_remote_write_command(LCD_SELECT_ADC | 1);
lcd_remote_write_command(LCD_SELECT_SHL | 8);
lcd_remote_write_command_ex(LCD_SET_COM0, 0);
generated by cgit (git 2.34.1) at 2023-09-26 09:17:38 +0000