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diff --git a/firmware/target/coldfire/iaudio/lcd-remote-iaudio.c b/firmware/target/coldfire/iaudio/lcd-remote-iaudio.c
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index 0000000000..139ebbc2a3
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+++ b/firmware/target/coldfire/iaudio/lcd-remote-iaudio.c
@@ -0,0 +1,517 @@
+/***************************************************************************
+ * __________ __ ___.
+ * Open \______ \ ____ ____ | | _\_ |__ _______ ___
+ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+ * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+ * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+ * \/ \/ \/ \/ \/
+ * $Id$
+ *
+ * Copyright (C) 2006 by Linus Nielsen Feltzing
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include "config.h"
+#include "system.h"
+#include "kernel.h"
+#include "lcd-remote.h"
+
+/* The LCD in the iAudio M3/M5/X5 remote control is a Tomato LSI 0350 */
+
+#define LCD_SET_DUTY_RATIO 0x48
+#define LCD_SELECT_ADC 0xa0
+#define LCD_SELECT_SHL 0xc0
+#define LCD_SET_COM0 0x44
+#define LCD_OSC_ON 0xab
+#define LCD_SELECT_DCDC 0x64
+#define LCD_SELECT_RES 0x20
+#define LCD_SET_VOLUME 0x81
+#define LCD_SET_BIAS 0x50
+#define LCD_CONTROL_POWER 0x28
+#define LCD_DISPLAY_ON 0xae
+#define LCD_SET_INITLINE 0x40
+#define LCD_SET_COLUMN 0x10
+#define LCD_SET_PAGE 0xb0
+#define LCD_SET_GRAY 0x88
+#define LCD_SET_PWM_FRC 0x90
+#define LCD_SET_POWER_SAVE 0xa8
+#define LCD_REVERSE 0xa6
+
+#define CS_LO and_l(~0x00000020, &GPIO1_OUT)
+#define CS_HI or_l(0x00000020, &GPIO1_OUT)
+#define CLK_LO and_l(~0x00004000, &GPIO_OUT)
+#define CLK_HI or_l(0x00004000, &GPIO_OUT)
+#define DATA_LO and_l(~0x00002000, &GPIO_OUT)
+#define DATA_HI or_l(0x00002000, &GPIO_OUT)
+#define RS_LO and_l(~0x00008000, &GPIO_OUT)
+#define RS_HI or_l(0x00008000, &GPIO_OUT)
+
+/* cached settings values */
+static bool cached_invert = false;
+static bool cached_flip = false;
+static int cached_contrast = DEFAULT_REMOTE_CONTRAST_SETTING;
+
+bool remote_initialized = false;
+
+static void remote_tick(void);
+
+/* 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"
+
+ "lsl.l #1,%[data] \n" /* Shift out MSB */
+ "bcc.s 1f \n"
+ "eor.l %[dbit], %%d0 \n" /* 1: Flip data bit */
+ "1: \n"
+ "eor.l %[cbit], %%d0 \n" /* Flip clock bit */
+ "move.l %%d0, (%[gpo0]) \n" /* Output new state */
+ "eor.l %[cbit], %%d0 \n" /* Flip clock bit */
+ "move.l %%d0, (%[gpo0]) \n" /* Output new state */
+
+ "lsl.l #1,%[data] \n" /* ..unrolled.. */
+ "bcc.s 1f \n"
+ "eor.l %[dbit], %%d0 \n"
+ "1: \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+
+ "lsl.l #1,%[data] \n"
+ "bcc.s 1f \n"
+ "eor.l %[dbit], %%d0 \n"
+ "1: \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+
+ "lsl.l #1,%[data] \n"
+ "bcc.s 1f \n"
+ "eor.l %[dbit], %%d0 \n"
+ "1: \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+
+ "lsl.l #1,%[data] \n"
+ "bcc.s 1f \n"
+ "eor.l %[dbit], %%d0 \n"
+ "1: \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+
+ "lsl.l #1,%[data] \n"
+ "bcc.s 1f \n"
+ "eor.l %[dbit], %%d0 \n"
+ "1: \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+
+ "lsl.l #1,%[data] \n"
+ "bcc.s 1f \n"
+ "eor.l %[dbit], %%d0 \n"
+ "1: \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+
+ "lsl.l #1,%[data] \n"
+ "bcc.s 1f \n"
+ "eor.l %[dbit], %%d0 \n"
+ "1: \n"
+ "eor.l %[cbit], %%d0 \n"
+ "move.l %%d0, (%[gpo0]) \n"
+ "eor.l %[cbit], %%d0 \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 unsigned char* p_bytes, int count)
+{
+ const unsigned char *p_end = p_bytes + 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;
+}
+
+void lcd_remote_powersave(bool on)
+{
+ if(remote_initialized) {
+ if (on)
+ lcd_remote_write_command(LCD_SET_POWER_SAVE | 1);
+ else
+ lcd_remote_write_command(LCD_SET_POWER_SAVE | 1);
+ }
+}
+
+void lcd_remote_set_contrast(int val)
+{
+ if (val < 0)
+ val = 0;
+ else if (val > 63)
+ val = 63;
+
+ cached_contrast = val;
+ if(remote_initialized)
+ lcd_remote_write_command_ex(LCD_SET_VOLUME, val);
+}
+
+bool remote_detect(void)
+{
+ return (GPIO_READ & 0x01000000)?false:true;
+}
+
+void lcd_remote_init_device(void)
+{
+ or_l(0x0000e000, &GPIO_OUT);
+ or_l(0x0000e000, &GPIO_ENABLE);
+ or_l(0x0000e000, &GPIO_FUNCTION);
+
+ or_l(0x00000020, &GPIO1_OUT);
+ or_l(0x00000020, &GPIO1_ENABLE);
+ or_l(0x00000020, &GPIO1_FUNCTION);
+
+ and_l(~0x01000000, &GPIO_OUT);
+ and_l(~0x01000000, &GPIO_ENABLE);
+ or_l(0x01000000, &GPIO_FUNCTION);
+
+ lcd_remote_clear_display();
+ tick_add_task(remote_tick);
+}
+
+void lcd_remote_on(void)
+{
+ CS_HI;
+ CLK_HI;
+ sleep(10);
+
+ lcd_remote_write_command(LCD_SET_DUTY_RATIO);
+ lcd_remote_write_command(0x70); /* 1/128 */
+
+ lcd_remote_write_command(LCD_OSC_ON);
+
+ lcd_remote_write_command(LCD_SELECT_DCDC | 2); /* DC/DC 5xboost */
+
+ lcd_remote_write_command(LCD_SELECT_RES | 7); /* Regulator resistor: 7.2 */
+
+ lcd_remote_write_command(LCD_SET_BIAS | 6); /* 1/11 */
+
+ lcd_remote_write_command(LCD_CONTROL_POWER | 7); /* All circuits ON */
+
+ sleep(30);
+
+ lcd_remote_write_command_ex(LCD_SET_GRAY | 0, 0x00);
+ lcd_remote_write_command_ex(LCD_SET_GRAY | 1, 0x00);
+ lcd_remote_write_command_ex(LCD_SET_GRAY | 2, 0x0c);
+ lcd_remote_write_command_ex(LCD_SET_GRAY | 3, 0x00);
+ lcd_remote_write_command_ex(LCD_SET_GRAY | 4, 0xcc);
+ lcd_remote_write_command_ex(LCD_SET_GRAY | 5, 0x00);
+ 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_DISPLAY_ON | 1); /* display on */
+
+ remote_initialized = true;
+
+ lcd_remote_set_flip(cached_flip);
+ lcd_remote_set_contrast(cached_contrast);
+ lcd_remote_set_invert_display(cached_invert);
+}
+
+void lcd_remote_off(void)
+{
+ remote_initialized = false;
+ CS_HI;
+ RS_HI;
+}
+
+void lcd_remote_poweroff(void)
+{
+ /* Set power save -> Power OFF (VDD - VSS) .. that's it */
+ if (remote_initialized && remote_detect())
+ lcd_remote_write_command(LCD_SET_POWER_SAVE | 1);
+}
+
+/* Monitor remote hotswap */
+static void remote_tick(void)
+{
+ static bool last_status = false;
+ static int countdown = 0;
+ static int init_delay = 0;
+ bool current_status;
+
+ current_status = remote_detect();
+
+ /* Only report when the status has changed */
+ if (current_status != last_status)
+ {
+ last_status = current_status;
+ countdown = current_status ? 20*HZ : 1;
+ }
+ else
+ {
+ /* Count down until it gets negative */
+ if (countdown >= 0)
+ countdown--;
+
+ if (current_status)
+ {
+ if (!(countdown % 8))
+ {
+ if (--init_delay <= 0)
+ {
+ queue_post(&remote_scroll_queue, REMOTE_INIT_LCD, 0);
+ init_delay = 6;
+ }
+ }
+ }
+ else
+ {
+ if (countdown == 0)
+ {
+ queue_post(&remote_scroll_queue, REMOTE_DEINIT_LCD, 0);
+ }
+ }
+ }
+}
+
+/* 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++) {
+ /* 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_ex(LCD_SET_COLUMN | 0, 0);
+ lcd_remote_write_data((unsigned char *)lcd_remote_framebuffer[y],
+ LCD_REMOTE_WIDTH*2);
+ }
+ }
+}
+
+/* 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) {
+ int ymax;
+
+ /* The Y coordinates have to work on even 8 pixel rows */
+ ymax = (y + height-1) >> 3;
+ y >>= 3;
+
+ if(x + width > LCD_REMOTE_WIDTH)
+ width = LCD_REMOTE_WIDTH - x;
+ if (width <= 0)
+ return; /* nothing left to do, 0 is harmful to lcd_write_data() */
+ if(ymax >= LCD_REMOTE_FBHEIGHT)
+ ymax = LCD_REMOTE_FBHEIGHT-1;
+
+ /* Copy specified rectangle bitmap to hardware
+ 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_ex(LCD_SET_COLUMN | ((x >> 4) & 0xf),
+ x & 0xf);
+
+ lcd_remote_write_data (
+ (unsigned char *)&lcd_remote_framebuffer[y][x], width*2);
+ }
+ }
+}
+
+void lcd_remote_set_invert_display(bool yesno)
+{
+ cached_invert = yesno;
+ if(remote_initialized)
+ lcd_remote_write_command(LCD_REVERSE | yesno);
+}
+
+void lcd_remote_set_flip(bool yesno)
+{
+ cached_flip = 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 {
+ 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 v1.2.3 (git 2.25.1) at 2024-11-02 13:32:31 +0000