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From: Thomas Zimmermann <tzimmermann@suse.de>
To: airlied@redhat.com, daniel@ffwll.ch, kraxel@redhat.com,
	sam@ravnborg.org, chen@aspeedtech.com
Cc: Thomas Zimmermann <tzimmermann@suse.de>, dri-devel@lists.freedesktop.org
Subject: [PATCH 5/9] drm/ast: Split ast_set_vbios_mode_info()
Date: Mon, 28 Oct 2019 16:49:24 +0100	[thread overview]
Message-ID: <20191028154928.4058-6-tzimmermann@suse.de> (raw)
In-Reply-To: <20191028154928.4058-1-tzimmermann@suse.de>

The implementation of ast_set_vbios_mode() converts a DRM display mode
and framebuffer into an adjusted mode and stores information for the
video BIOS to several scratch regsiters.

Here we split the function into individual functions that do the
conversion, set the VBIOS mode information and format information.
This makes it compatible with support for primary planes and atomic
modesetting.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
---
 drivers/gpu/drm/ast/ast_mode.c | 111 +++++++++++++++++++++------------
 1 file changed, 72 insertions(+), 39 deletions(-)

diff --git a/drivers/gpu/drm/ast/ast_mode.c b/drivers/gpu/drm/ast/ast_mode.c
index 5feb687191e0..c4c9fca0f00c 100644
--- a/drivers/gpu/drm/ast/ast_mode.c
+++ b/drivers/gpu/drm/ast/ast_mode.c
@@ -82,13 +82,12 @@ static void ast_crtc_load_lut(struct drm_crtc *crtc)
 		ast_load_palette_index(ast, i, *r++ >> 8, *g++ >> 8, *b++ >> 8);
 }
 
-static bool ast_get_vbios_mode_info(struct drm_crtc *crtc, struct drm_display_mode *mode,
+static bool ast_get_vbios_mode_info(const struct drm_framebuffer *fb,
+				    const struct drm_display_mode *mode,
 				    struct drm_display_mode *adjusted_mode,
 				    struct ast_vbios_mode_info *vbios_mode)
 {
-	struct ast_private *ast = crtc->dev->dev_private;
-	const struct drm_framebuffer *fb = crtc->primary->fb;
-	u32 refresh_rate_index = 0, mode_id, color_index, refresh_rate;
+	u32 refresh_rate_index = 0, refresh_rate;
 	const struct ast_vbios_enhtable *best = NULL;
 	u32 hborder, vborder;
 	bool check_sync;
@@ -96,22 +95,19 @@ static bool ast_get_vbios_mode_info(struct drm_crtc *crtc, struct drm_display_mo
 	switch (fb->format->cpp[0] * 8) {
 	case 8:
 		vbios_mode->std_table = &vbios_stdtable[VGAModeIndex];
-		color_index = VGAModeIndex - 1;
 		break;
 	case 16:
 		vbios_mode->std_table = &vbios_stdtable[HiCModeIndex];
-		color_index = HiCModeIndex;
 		break;
 	case 24:
 	case 32:
 		vbios_mode->std_table = &vbios_stdtable[TrueCModeIndex];
-		color_index = TrueCModeIndex;
 		break;
 	default:
 		return false;
 	}
 
-	switch (crtc->mode.crtc_hdisplay) {
+	switch (mode->crtc_hdisplay) {
 	case 640:
 		vbios_mode->enh_table = &res_640x480[refresh_rate_index];
 		break;
@@ -122,7 +118,7 @@ static bool ast_get_vbios_mode_info(struct drm_crtc *crtc, struct drm_display_mo
 		vbios_mode->enh_table = &res_1024x768[refresh_rate_index];
 		break;
 	case 1280:
-		if (crtc->mode.crtc_vdisplay == 800)
+		if (mode->crtc_vdisplay == 800)
 			vbios_mode->enh_table = &res_1280x800[refresh_rate_index];
 		else
 			vbios_mode->enh_table = &res_1280x1024[refresh_rate_index];
@@ -134,7 +130,7 @@ static bool ast_get_vbios_mode_info(struct drm_crtc *crtc, struct drm_display_mo
 		vbios_mode->enh_table = &res_1440x900[refresh_rate_index];
 		break;
 	case 1600:
-		if (crtc->mode.crtc_vdisplay == 900)
+		if (mode->crtc_vdisplay == 900)
 			vbios_mode->enh_table = &res_1600x900[refresh_rate_index];
 		else
 			vbios_mode->enh_table = &res_1600x1200[refresh_rate_index];
@@ -143,7 +139,7 @@ static bool ast_get_vbios_mode_info(struct drm_crtc *crtc, struct drm_display_mo
 		vbios_mode->enh_table = &res_1680x1050[refresh_rate_index];
 		break;
 	case 1920:
-		if (crtc->mode.crtc_vdisplay == 1080)
+		if (mode->crtc_vdisplay == 1080)
 			vbios_mode->enh_table = &res_1920x1080[refresh_rate_index];
 		else
 			vbios_mode->enh_table = &res_1920x1200[refresh_rate_index];
@@ -154,7 +150,8 @@ static bool ast_get_vbios_mode_info(struct drm_crtc *crtc, struct drm_display_mo
 
 	refresh_rate = drm_mode_vrefresh(mode);
 	check_sync = vbios_mode->enh_table->flags & WideScreenMode;
-	do {
+
+	while (1) {
 		const struct ast_vbios_enhtable *loop = vbios_mode->enh_table;
 
 		while (loop->refresh_rate != 0xff) {
@@ -178,7 +175,8 @@ static bool ast_get_vbios_mode_info(struct drm_crtc *crtc, struct drm_display_mo
 		if (best || !check_sync)
 			break;
 		check_sync = 0;
-	} while (1);
+	}
+
 	if (best)
 		vbios_mode->enh_table = best;
 
@@ -203,34 +201,65 @@ static bool ast_get_vbios_mode_info(struct drm_crtc *crtc, struct drm_display_mo
 					 vbios_mode->enh_table->vfp +
 					 vbios_mode->enh_table->vsync);
 
-	refresh_rate_index = vbios_mode->enh_table->refresh_rate_index;
-	mode_id = vbios_mode->enh_table->mode_id;
+	return true;
+}
 
-	if (ast->chip == AST1180) {
-		/* TODO 1180 */
-	} else {
-		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8c, (u8)((color_index & 0xf) << 4));
-		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8d, refresh_rate_index & 0xff);
-		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8e, mode_id & 0xff);
-
-		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0x00);
-		if (vbios_mode->enh_table->flags & NewModeInfo) {
-			ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0xa8);
-			ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x92,
-					  fb->format->cpp[0] * 8);
-			ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x93, adjusted_mode->clock / 1000);
-			ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x94, adjusted_mode->crtc_hdisplay);
-			ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x95, adjusted_mode->crtc_hdisplay >> 8);
-
-			ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x96, adjusted_mode->crtc_vdisplay);
-			ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x97, adjusted_mode->crtc_vdisplay >> 8);
-		}
+static void ast_set_vbios_color_reg(struct drm_crtc *crtc,
+				    const struct drm_framebuffer *fb,
+				    const struct ast_vbios_mode_info *vbios_mode)
+{
+	struct ast_private *ast = crtc->dev->dev_private;
+	u32 color_index;
+
+	switch (fb->format->cpp[0]) {
+	case 1:
+		color_index = VGAModeIndex - 1;
+		break;
+	case 2:
+		color_index = HiCModeIndex;
+		break;
+	case 3:
+	case 4:
+		color_index = TrueCModeIndex;
+	default:
+		return;
 	}
 
-	return true;
+	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8c, (u8)((color_index & 0x0f) << 4));
+
+	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0x00);
+
+	if (vbios_mode->enh_table->flags & NewModeInfo) {
+		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0xa8);
+		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x92, fb->format->cpp[0] * 8);
+	}
+}
+
+static void ast_set_vbios_mode_reg(struct drm_crtc *crtc,
+				   const struct drm_display_mode *adjusted_mode,
+				   const struct ast_vbios_mode_info *vbios_mode)
+{
+	struct ast_private *ast = crtc->dev->dev_private;
+	u32 refresh_rate_index, mode_id;
+
+	refresh_rate_index = vbios_mode->enh_table->refresh_rate_index;
+	mode_id = vbios_mode->enh_table->mode_id;
+
+	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8d, refresh_rate_index & 0xff);
+	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x8e, mode_id & 0xff);
 
+	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0x00);
 
+	if (vbios_mode->enh_table->flags & NewModeInfo) {
+		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x91, 0xa8);
+		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x93, adjusted_mode->clock / 1000);
+		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x94, adjusted_mode->crtc_hdisplay);
+		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x95, adjusted_mode->crtc_hdisplay >> 8);
+		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x96, adjusted_mode->crtc_vdisplay);
+		ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x97, adjusted_mode->crtc_vdisplay >> 8);
+	}
 }
+
 static void ast_set_std_reg(struct drm_crtc *crtc, struct drm_display_mode *mode,
 			    struct ast_vbios_mode_info *vbios_mode)
 {
@@ -581,20 +610,24 @@ static int ast_crtc_mode_set(struct drm_crtc *crtc,
 {
 	struct drm_device *dev = crtc->dev;
 	struct ast_private *ast = crtc->dev->dev_private;
+	const struct drm_framebuffer *fb = crtc->primary->fb;
 	struct ast_vbios_mode_info vbios_mode;
-	bool ret;
+	bool succ;
+
 	if (ast->chip == AST1180) {
 		DRM_ERROR("AST 1180 modesetting not supported\n");
 		return -EINVAL;
 	}
 
-	ret = ast_get_vbios_mode_info(crtc, mode, adjusted_mode, &vbios_mode);
-	if (ret == false)
+	succ = ast_get_vbios_mode_info(fb, mode, adjusted_mode, &vbios_mode);
+	if (!succ)
 		return -EINVAL;
+
 	ast_open_key(ast);
 
+	ast_set_vbios_color_reg(crtc, fb, &vbios_mode);
+	ast_set_vbios_mode_reg(crtc, adjusted_mode, &vbios_mode);
 	ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x06);
-
 	ast_set_std_reg(crtc, adjusted_mode, &vbios_mode);
 	ast_set_crtc_reg(crtc, adjusted_mode, &vbios_mode);
 	ast_set_offset_reg(crtc);
-- 
2.23.0

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  parent reply	other threads:[~2019-10-28 15:49 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-28 15:49 [PATCH 0/9] drm/ast: Convert to atomic modesetting Thomas Zimmermann
2019-10-28 15:49 ` [PATCH 1/9] drm/ast: Remove last traces of struct ast_gem_object Thomas Zimmermann
2019-11-05  9:42   ` Gerd Hoffmann
2019-10-28 15:49 ` [PATCH 2/9] drm/ast: Check video-mode requirements against VRAM size Thomas Zimmermann
2019-11-05  9:42   ` Gerd Hoffmann
2019-10-28 15:49 ` [PATCH 3/9] drm/ast: Don't clear base address and offset with default values Thomas Zimmermann
2019-11-05  9:44   ` Gerd Hoffmann
2019-10-28 15:49 ` [PATCH 4/9] drm/ast: Split ast_set_ext_reg() into color and threshold function Thomas Zimmermann
2019-11-05  9:45   ` Gerd Hoffmann
2019-10-28 15:49 ` Thomas Zimmermann [this message]
2019-11-05  9:47   ` [PATCH 5/9] drm/ast: Split ast_set_vbios_mode_info() Gerd Hoffmann
2019-10-28 15:49 ` [PATCH 6/9] drm/ast: Add primary plane Thomas Zimmermann
2019-11-05  9:51   ` Gerd Hoffmann
2019-11-05  9:54     ` Daniel Vetter
2019-11-06  8:24     ` Thomas Zimmermann
2019-10-28 15:49 ` [PATCH 7/9] drm/ast: Add CRTC helpers for atomic modesetting Thomas Zimmermann
2019-11-05  9:51   ` Gerd Hoffmann
2019-10-28 15:49 ` [PATCH 8/9] drm/ast: Add cursor plane Thomas Zimmermann
2019-11-05  9:52   ` Gerd Hoffmann
2019-11-05  9:55   ` Daniel Vetter
2019-11-06  8:31     ` Thomas Zimmermann
2019-11-06  9:05       ` Daniel Vetter
2019-11-06  9:46         ` Thomas Zimmermann
2019-10-28 15:49 ` [PATCH 9/9] drm/ast: Enable atomic modesetting Thomas Zimmermann
2019-11-05  9:57   ` Gerd Hoffmann
2019-11-05 10:31     ` Daniel Vetter
2019-11-06  8:28       ` Thomas Zimmermann
2019-11-06 13:36     ` Thomas Zimmermann
2019-11-07  6:55       ` Gerd Hoffmann
2019-11-07  7:32         ` Thomas Zimmermann
2019-10-28 16:00 ` [PATCH 0/9] drm/ast: Convert to " Thomas Zimmermann
2019-10-28 16:00   ` Thomas Zimmermann

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