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From 2f37934f81b3f46ad5c3dac6484a2c3c255066fc Mon Sep 17 00:00:00 2001
From: Thomas White <taw@bitwiz.org.uk>
Date: Wed, 28 Apr 2010 00:09:00 +0200
Subject: [PATCH 27/27] Almost make rotation work
Signed-off-by: Thomas White <taw@bitwiz.org.uk>
---
drivers/mfd/glamo/glamo-display.c | 171 ++++++++++++++++++++++++++++---------
1 files changed, 129 insertions(+), 42 deletions(-)
diff --git a/drivers/mfd/glamo/glamo-display.c b/drivers/mfd/glamo/glamo-display.c
index a551968..75ad734 100644
--- a/drivers/mfd/glamo/glamo-display.c
+++ b/drivers/mfd/glamo/glamo-display.c
@@ -298,6 +298,7 @@ static int glamo_crtc_mode_set(struct drm_crtc *crtc,
struct glamodrm_handle *gdrm;
struct glamo_crtc *gcrtc;
int retr_start, retr_end, disp_start, disp_end;
+ int rot;
/* Dig out our handle */
gcrtc = to_glamo_crtc(crtc);
@@ -310,49 +311,135 @@ static int glamo_crtc_mode_set(struct drm_crtc *crtc,
msleep(500);
}
+ /* Rotate? */
+ if ( (mode->hdisplay == 640) && (mode->vdisplay == 480) ) {
+ rot = GLAMO_LCD_ROT_MODE_90;
+ } else if ( (mode->hdisplay == 480) && (mode->vdisplay == 640) ) {
+ rot = GLAMO_LCD_ROT_MODE_0;
+ } else if ( (mode->hdisplay == 320) && (mode->vdisplay == 240) ) {
+ rot = GLAMO_LCD_ROT_MODE_90;
+ } else if ( (mode->hdisplay == 240) && (mode->vdisplay == 320) ) {
+ rot = GLAMO_LCD_ROT_MODE_0;
+ } else {
+ printk(KERN_WARNING "[glamo-drm] Couldn't choose rotation.\n");
+ rot = GLAMO_LCD_ROT_MODE_0;
+ }
+
glamo_lcd_cmd_mode(gdrm, 1);
- glamo_engine_reclock(gdrm->glamo_core, GLAMO_ENGINE_LCD, mode->clock);
- gdrm->saved_clock = mode->clock;
+ /* Set dimensions */
+ if ( rot == GLAMO_LCD_ROT_MODE_0 ) {
+
+ glamo_engine_reclock(gdrm->glamo_core, GLAMO_ENGINE_LCD,
+ mode->clock);
+
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_WIDTH,
+ GLAMO_LCD_WIDTH_MASK, mode->hdisplay);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HEIGHT,
+ GLAMO_LCD_HEIGHT_MASK, mode->vdisplay);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_PITCH,
+ GLAMO_LCD_PITCH_MASK, mode->hdisplay*2);
+
+ /* Set rotation */
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_WIDTH,
+ GLAMO_LCD_ROT_MODE_MASK, rot);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_MODE1,
+ GLAMO_LCD_MODE1_ROTATE_EN,
+ (rot != GLAMO_LCD_ROT_MODE_0) ?
+ GLAMO_LCD_MODE1_ROTATE_EN : 0);
+
+ /* Convert "X modeline timings" into "Glamo timings" */
+ retr_start = 0;
+ retr_end = retr_start + mode->hsync_end - mode->hsync_start;
+ disp_start = mode->htotal - mode->hsync_start;
+ disp_end = disp_start + mode->hdisplay;
+
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_TOTAL,
+ GLAMO_LCD_HV_TOTAL_MASK, mode->htotal);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_RETR_START,
+ GLAMO_LCD_HV_RETR_START_MASK, retr_start);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_RETR_END,
+ GLAMO_LCD_HV_RETR_END_MASK, retr_end);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_DISP_START,
+ GLAMO_LCD_HV_RETR_DISP_START_MASK, disp_start);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_DISP_END,
+ GLAMO_LCD_HV_RETR_DISP_END_MASK, disp_end);
+
+ /* The same in the vertical direction */
+ retr_start = 0;
+ retr_end = retr_start + mode->vsync_end - mode->vsync_start;
+ disp_start = mode->vtotal - mode->vsync_start;
+ disp_end = disp_start + mode->vdisplay;
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_TOTAL,
+ GLAMO_LCD_HV_TOTAL_MASK, mode->vtotal);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_RETR_START,
+ GLAMO_LCD_HV_RETR_START_MASK, retr_start);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_RETR_END,
+ GLAMO_LCD_HV_RETR_END_MASK, retr_end);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_DISP_START,
+ GLAMO_LCD_HV_RETR_DISP_START_MASK,
+ disp_start);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_DISP_END,
+ GLAMO_LCD_HV_RETR_DISP_END_MASK, disp_end);
+
+ } else {
+
+ glamo_engine_reclock(gdrm->glamo_core, GLAMO_ENGINE_LCD,
+ mode->clock/2);
+
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_WIDTH,
+ GLAMO_LCD_WIDTH_MASK, mode->vdisplay);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HEIGHT,
+ GLAMO_LCD_HEIGHT_MASK, mode->hdisplay);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_PITCH,
+ GLAMO_LCD_PITCH_MASK, mode->hdisplay*2);
+
+ /* Set rotation */
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_WIDTH,
+ GLAMO_LCD_ROT_MODE_MASK, rot);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_MODE1,
+ GLAMO_LCD_MODE1_ROTATE_EN,
+ (rot != GLAMO_LCD_ROT_MODE_0) ?
+ GLAMO_LCD_MODE1_ROTATE_EN : 0);
+
+ /* Apply "vertical" numbers to the horizontal registers */
+ retr_start = 0;
+ retr_end = retr_start + mode->vsync_end - mode->vsync_start;
+ disp_start = mode->vtotal - mode->vsync_start;
+ disp_end = disp_start + mode->vdisplay;
+
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_TOTAL,
+ GLAMO_LCD_HV_TOTAL_MASK, mode->vtotal);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_RETR_START,
+ GLAMO_LCD_HV_RETR_START_MASK, retr_start);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_RETR_END,
+ GLAMO_LCD_HV_RETR_END_MASK, retr_end);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_DISP_START,
+ GLAMO_LCD_HV_RETR_DISP_START_MASK,
+ disp_start);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_DISP_END,
+ GLAMO_LCD_HV_RETR_DISP_END_MASK, disp_end);
+
+ /* Apply "horizontal" numbers to the vertical registers */
+ retr_start = 0;
+ retr_end = retr_start + mode->hsync_end - mode->hsync_start;
+ disp_start = mode->htotal - mode->hsync_start;
+ disp_end = disp_start + mode->hdisplay;
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_TOTAL,
+ GLAMO_LCD_HV_TOTAL_MASK, mode->htotal);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_RETR_START,
+ GLAMO_LCD_HV_RETR_START_MASK, retr_start);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_RETR_END,
+ GLAMO_LCD_HV_RETR_END_MASK, retr_end);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_DISP_START,
+ GLAMO_LCD_HV_RETR_DISP_START_MASK,
+ disp_start);
+ reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_DISP_END,
+ GLAMO_LCD_HV_RETR_DISP_END_MASK, disp_end);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_WIDTH,
- GLAMO_LCD_WIDTH_MASK, mode->hdisplay);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HEIGHT,
- GLAMO_LCD_HEIGHT_MASK, mode->vdisplay);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_PITCH,
- GLAMO_LCD_PITCH_MASK, mode->hdisplay*2);
-
- /* Convert "X modeline timings" into "Glamo timings" */
- retr_start = 0;
- retr_end = retr_start + mode->hsync_end - mode->hsync_start;
- disp_start = mode->htotal - mode->hsync_start;
- disp_end = disp_start + mode->hdisplay;
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_TOTAL,
- GLAMO_LCD_HV_TOTAL_MASK, mode->htotal);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_RETR_START,
- GLAMO_LCD_HV_RETR_START_MASK, retr_start);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_RETR_END,
- GLAMO_LCD_HV_RETR_END_MASK, retr_end);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_DISP_START,
- GLAMO_LCD_HV_RETR_DISP_START_MASK, disp_start);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_HORIZ_DISP_END,
- GLAMO_LCD_HV_RETR_DISP_END_MASK, disp_end);
-
- /* The same in the vertical direction */
- retr_start = 0;
- retr_end = retr_start + mode->vsync_end - mode->vsync_start;
- disp_start = mode->vtotal - mode->vsync_start;
- disp_end = disp_start + mode->vdisplay;
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_TOTAL,
- GLAMO_LCD_HV_TOTAL_MASK, mode->vtotal);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_RETR_START,
- GLAMO_LCD_HV_RETR_START_MASK, retr_start);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_RETR_END,
- GLAMO_LCD_HV_RETR_END_MASK, retr_end);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_DISP_START,
- GLAMO_LCD_HV_RETR_DISP_START_MASK, disp_start);
- reg_set_bit_mask_lcd(gdrm, GLAMO_REG_LCD_VERT_DISP_END,
- GLAMO_LCD_HV_RETR_DISP_END_MASK, disp_end);
+ }
+
+ gdrm->saved_clock = mode->clock;
glamo_lcd_cmd_mode(gdrm, 0);
@@ -747,8 +834,8 @@ int glamo_display_init(struct drm_device *dev)
drm_mode_config_init(dev);
dev->mode_config.min_width = 240;
- dev->mode_config.min_height = 320;
- dev->mode_config.max_width = 480;
+ dev->mode_config.min_height = 240;
+ dev->mode_config.max_width = 640;
dev->mode_config.max_height = 640;
dev->mode_config.funcs = (void *)&glamo_mode_funcs;
--
1.7.1
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