summaryrefslogtreecommitdiff
path: root/nuttx/arch/arm/src/lpc17xx/lpc17_lcd.c
diff options
context:
space:
mode:
Diffstat (limited to 'nuttx/arch/arm/src/lpc17xx/lpc17_lcd.c')
-rw-r--r--nuttx/arch/arm/src/lpc17xx/lpc17_lcd.c205
1 files changed, 178 insertions, 27 deletions
diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_lcd.c b/nuttx/arch/arm/src/lpc17xx/lpc17_lcd.c
index 0fdae36e7..270250d83 100644
--- a/nuttx/arch/arm/src/lpc17xx/lpc17_lcd.c
+++ b/nuttx/arch/arm/src/lpc17xx/lpc17_lcd.c
@@ -56,6 +56,11 @@
#define FB_WIDTH ((CONFIG_LPC17_LCD_HWIDTH * CONFIG_LPC17_LCD_BPP + 7) / 8)
#define FB_SIZE (FB_WIDTH * CONFIG_LPC17_LCD_VHEIGHT)
+/* Delays */
+
+#define LPC17_LCD_PWRDIS_DELAY 10000
+#define LPC17_LCD_PWREN_DELAY 10000
+
/****************************************************************************
* Private Types
****************************************************************************/
@@ -113,7 +118,7 @@ static const struct fb_videoinfo_s g_videoinfo =
static const struct fb_planeinfo_s g_planeinfo =
{
- .fbmem = (FAR void *)LCD_VRAM_BASE,
+ .fbmem = (FAR void *)CONFIG_LPC17_LCD_VRAMBASE,
.fblen = FB_SIZE,
.stride = FB_WIDTH,
.bpp = CONFIG_LPC17_LCD_BPP,
@@ -198,30 +203,72 @@ static int lpc17_getplaneinfo(FAR struct fb_vtable_s *vtable, int planeno,
****************************************************************************/
#ifdef CONFIG_FB_CMAP
-static int lpc17_getcmap(FAR struct fb_vtable_s *vtable, FAR struct fb_cmap_s *cmap)
+static int lpc17_getcmap(FAR struct fb_vtable_s *vtable,
+ FAR struct fb_cmap_s *cmap)
{
- int len;
+ uint32_t *pal;
+ uint32_t rgb;
+ int last;
int i;
- dbg("vtable=%p cmap=%p len=%d\n", vtable, cmap, cmap->len);
- if (vtable && cmap)
+ dbg("vtable=%p cmap=%p first=%d len=%d\n",
+ vtable, cmap, cmap->first, cmap->len);
+
+ DEBUGASSERT(vtable && cmap &&
+ cmap->first < 256 && (cmap->first + cmap->len) < 256);
+
+ pal = (uint32_t *)LPC17_LCD_PAL(cmap->first >> 1);
+ last = cmap->first + cmap->len;
+
+ /* Handle the case where the first color starts on an odd boundary */
+
+ i = cmap->first;
+ if ((i & 1) != 0)
{
- for (i = cmap->first, len = 0; i < 256 && len < cmap->len; i++, len++)
+ rgb = *pal++;
+ i++;
+
+ /* Save the odd palette value */
+
+ cmap->red[i] = (rgb & LCD_PAL_R1_MASK) >> LCD_PAL_R1_SHIFT;
+ cmap->green[i] = (rgb & LCD_PAL_G1_MASK) >> LCD_PAL_G1_SHIFT;
+ cmap->blue[i] = (rgb & LCD_PAL_B1_MASK) >> LCD_PAL_B1_SHIFT;
+#ifdef CONFIG_FB_TRANSPARENCY
+ cmap->transp[i] = 0;
+#endif
+ }
+
+ /* Handle even colors */
+
+ for (; i < last; i += 2)
+ {
+ rgb = *pal++;
+
+ /* Save the even palette value */
+
+ cmap->red[i] = (rgb & LCD_PAL_R0_MASK) >> LCD_PAL_R0_SHIFT;
+ cmap->green[i] = (rgb & LCD_PAL_G0_MASK) >> LCD_PAL_G0_SHIFT;
+ cmap->blue[i] = (rgb & LCD_PAL_B0_MASK) >> LCD_PAL_B0_SHIFT;
+#ifdef CONFIG_FB_TRANSPARENCY
+ cmap->transp[i] = 0;
+#endif
+
+ /* Handle the case where the len ends on an odd boudary */
+
+ if ((i + 1) < last)
{
- cmap->red[i] = i;
- cmap->green[i] = i;
- cmap->blue[i] = i;
+ /* Save the even palette value */
+
+ cmap->red[i+1] = (rgb & LCD_PAL_R1_MASK) >> LCD_PAL_R1_SHIFT;
+ cmap->green[i+1] = (rgb & LCD_PAL_G1_MASK) >> LCD_PAL_G1_SHIFT;
+ cmap->blue[i+1] = (rgb & LCD_PAL_B1_MASK) >> LCD_PAL_B1_SHIFT;
#ifdef CONFIG_FB_TRANSPARENCY
- cmap->transp[i] = i;
+ cmap->transp[i+1] = 0;
#endif
}
-
- cmap->len = len;
- return OK;
}
- dbg("Returning EINVAL\n");
- return -EINVAL;
+ return OK;
}
#endif
@@ -230,16 +277,68 @@ static int lpc17_getcmap(FAR struct fb_vtable_s *vtable, FAR struct fb_cmap_s *c
****************************************************************************/
#ifdef CONFIG_FB_CMAP
-static int lpc17_putcmap(FAR struct fb_vtable_s *vtable, FAR const struct fb_cmap_s *cmap)
+static int lpc17_putcmap(FAR struct fb_vtable_s *vtable,
+ FAR const struct fb_cmap_s *cmap)
{
- dbg("vtable=%p cmap=%p len=%d\n", vtable, cmap, cmap->len);
- if (vtable && cmap)
+ uint32_t *pal;
+ uint32_t rgb0;
+ uint32_t rgb1;
+ int last;
+ int i;
+
+ dbg("vtable=%p cmap=%p first=%d len=%d\n",
+ vtable, cmap, cmap->first, cmap->len);
+
+ DEBUGASSERT(vtable && cmap);
+
+ pal = (uint32_t *)LPC17_LCD_PAL(cmap->first >> 1);
+ last = cmap->first + cmap->len;
+
+ /* Handle the case where the first color starts on an odd boundary */
+
+ i = cmap->first;
+ if ((i & 1) != 0)
{
- return OK;
+ rgb0 = *pal;
+ rgb0 &= (LCD_PAL_R0_MASK | LCD_PAL_G0_MASK | LCD_PAL_B0_MASK | LCD_PAL_I0);
+ rgb1 |= ((uint32_t)cmap->red[i] << LCD_PAL_R0_SHIFT |
+ (uint32_t)cmap->green[i] << LCD_PAL_G0_SHIFT |
+ (uint32_t)cmap->blue[i] << LCD_PAL_B0_SHIFT);
+
+ /* Save the new palette value */
+
+ *pal++ = (rgb0 | rgb1);
+ i++;
}
- dbg("Returning EINVAL\n");
- return -EINVAL;
+ /* Handle even colors */
+
+ for (; i < last; i += 2)
+ {
+ uint32_t rgb0 = ((uint32_t)cmap->red[i] << LCD_PAL_R0_SHIFT |
+ (uint32_t)cmap->green[i] << LCD_PAL_G0_SHIFT |
+ (uint32_t)cmap->blue[i] << LCD_PAL_B0_SHIFT);
+
+ /* Handle the case where the len ends on an odd boudary */
+
+ if ((i + 1) >= last)
+ {
+ rgb1 = *pal;
+ rgb1 &= (LCD_PAL_R1_MASK | LCD_PAL_G1_MASK | LCD_PAL_B1_MASK | LCD_PAL_I1);
+ }
+ else
+ {
+ rgb1 = ((uint32_t)cmap->red[i+1] << LCD_PAL_R1_SHIFT |
+ (uint32_t)cmap->green[i+1] << LCD_PAL_G1_SHIFT |
+ (uint32_t)cmap->blue[i+1] << LCD_PAL_B1_SHIFT);
+ }
+
+ /* Save the new pallete value */
+
+ *pal++ = (rgb0 | rgb1);
+ }
+
+ return OK;
}
#endif
@@ -326,11 +425,21 @@ static int lpc17_setcursor(FAR struct fb_vtable_s *vtable,
int up_fbinitialize(void)
{
+ int i;
+
/* Disable LCD controller */
-#warning "Missing logioc"
+
+ regval = getreg32(LPC17_LCD_CTRL);
+ regval &= ~LCD_CTRL_LCDPWR;
+ putreg32(regval, LPC17_LCD_CTRL);
+
+ for (i = LPC17_LCD_PWRDIS_DELAY; i; i--);
+
+ regval &= ~LCD_CTRL_LCDEN;
+ putreg32(regval, LPC17_LCD_CTRL);
/* Configure pins */
- /* R */
+ /* Video data */
lpc17_configgpio(GPIO_LCD_VD0);
lpc17_configgpio(GPIO_LCD_VD1);
@@ -341,8 +450,6 @@ int up_fbinitialize(void)
lpc17_configgpio(GPIO_LCD_VD6);
lpc17_configgpio(GPIO_LCD_VD7);
- /* G */
-
lpc17_configgpio(GPIO_LCD_VD8);
lpc17_configgpio(GPIO_LCD_VD9);
lpc17_configgpio(GPIO_LCD_VD10);
@@ -352,8 +459,7 @@ int up_fbinitialize(void)
lpc17_configgpio(GPIO_LCD_VD14);
lpc17_configgpio(GPIO_LCD_VD15);
- /* B */
-
+#if CONFIG_LPC17_LCD_BPP == 24
lpc17_configgpio(GPIO_LCD_VD16);
lpc17_configgpio(GPIO_LCD_VD17);
lpc17_configgpio(GPIO_LCD_VD18);
@@ -362,6 +468,7 @@ int up_fbinitialize(void)
lpc17_configgpio(GPIO_LCD_VD21);
lpc17_configgpio(GPIO_LCD_VD22);
lpc17_configgpio(GPIO_LCD_VD23);
+#endif
/* Other pins */
@@ -371,6 +478,24 @@ int up_fbinitialize(void)
lpc17_configgpio(GPIO_LCD_ENABM);
lpc17_configgpio(GPIO_LCD_PWR);
+#warning "Missing logic"
+
+ /* Clear the display */
+
+ lpc17_lcdclear(CONFIG_LPC17_LCD_BACKCOLOR);
+ for (i = LPC17_LCD_PWREN_DELAY; i; i--);
+
+ /* Enable LCD */
+
+ regval = getreg32(LPC17_LCD_CTRL);
+ regval |= LCD_CTRL_LCDEN;
+ putreg32(regval, LPC17_LCD_CTRL);
+
+ for (i = LPC17_LCD_PWREN_DELAY; i; i--);
+
+ regval |= LCD_CTRL_LCDPWR;
+ putreg32(regval, LPC17_LCD_CTRL);
+
return OK;
}
@@ -414,3 +539,29 @@ void fb_uninitialize(void)
return OK;
}
+/************************************************************************************
+ * Name: lpc17_lcdclear
+ *
+ * Description:
+ * This is a non-standard LCD interface just for the LPC17xx. Clearing the display
+ * in the normal way by writing a sequences of runs that covers the entire display
+ * can be slow. Here the dispaly is cleared by simply setting all VRAM memory to
+ * the specified color.
+ *
+ ************************************************************************************/
+
+void lpc17_lcdclear(nxgl_pixel_t color)
+{
+#if CONFIG_LPC17_LCD_BPP == 16
+ uint16_t *dest;
+#else
+ uint32_t *dest;
+#endif
+ int i;
+
+ dest = (uint32_t *) CONFIG_LPC17_LCD_VRAMBASE;
+ for (i = 0; (CONFIG_LPC17_LCD_HWIDTH * CONFIG_LPC17_LCD_VHEIGHT) > i; i++)
+ {
+ *dest++ = color;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-07 02:43:33 +0000