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drm/ast: Base support for AST2500

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Add detection and mode setting updates for AST2500 generation chip,
code originally from Aspeed and slightly reworked for coding style
mostly by Ben. This doesn't contain the BMC DRAM POST code which
is in a separate patch.

Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Y.C. Chen
2017-02-17 14:36:46 +11:00
committed by Dave Airlie
parent 6475a7cce6
commit 9f93c8b3c0
4 changed files with 103 additions and 19 deletions
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30
drivers/gpu/drm/ast/ast_mode.c
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@@ -273,7 +273,11 @@ static void ast_set_crtc_reg(struct drm_crtc *crtc, struct drm_display_mode *mod
{
struct ast_private *ast = crtc->dev->dev_private;
u8 jreg05 = 0, jreg07 = 0, jreg09 = 0, jregAC = 0, jregAD = 0, jregAE = 0;
u16 temp;
u16 temp, precache = 0;
if ((ast->chip == AST2500) &&
(vbios_mode->enh_table->flags & AST2500PreCatchCRT))
precache = 40;
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x00);
@@ -299,12 +303,12 @@ static void ast_set_crtc_reg(struct drm_crtc *crtc, struct drm_display_mode *mod
jregAD |= 0x01; /* HBE D[5] */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x03, 0xE0, (temp & 0x1f));
temp = (mode->crtc_hsync_start >> 3) - 1;
temp = ((mode->crtc_hsync_start-precache) >> 3) - 1;
if (temp & 0x100)
jregAC |= 0x40; /* HRS D[5] */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x04, 0x00, temp);
temp = ((mode->crtc_hsync_end >> 3) - 1) & 0x3f;
temp = (((mode->crtc_hsync_end-precache) >> 3) - 1) & 0x3f;
if (temp & 0x20)
jregAD |= 0x04; /* HRE D[5] */
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x05, 0x60, (u8)((temp & 0x1f) | jreg05));
@@ -365,6 +369,11 @@ static void ast_set_crtc_reg(struct drm_crtc *crtc, struct drm_display_mode *mod
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x09, 0xdf, jreg09);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xAE, 0x00, (jregAE | 0x80));
if (precache)
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb6, 0x3f, 0x80);
else
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xb6, 0x3f, 0x00);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0x11, 0x7f, 0x80);
}
@@ -386,12 +395,16 @@ static void ast_set_dclk_reg(struct drm_device *dev, struct drm_display_mode *mo
struct ast_private *ast = dev->dev_private;
const struct ast_vbios_dclk_info *clk_info;
clk_info = &dclk_table[vbios_mode->enh_table->dclk_index];
if (ast->chip == AST2500)
clk_info = &dclk_table_ast2500[vbios_mode->enh_table->dclk_index];
else
clk_info = &dclk_table[vbios_mode->enh_table->dclk_index];
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xc0, 0x00, clk_info->param1);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xc1, 0x00, clk_info->param2);
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xbb, 0x0f,
(clk_info->param3 & 0x80) | ((clk_info->param3 & 0x3) << 4));
(clk_info->param3 & 0xc0) |
((clk_info->param3 & 0x3) << 4));
}
static void ast_set_ext_reg(struct drm_crtc *crtc, struct drm_display_mode *mode,
@@ -425,7 +438,8 @@ static void ast_set_ext_reg(struct drm_crtc *crtc, struct drm_display_mode *mode
ast_set_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa8, 0xfd, jregA8);
/* Set Threshold */
if (ast->chip == AST2300 || ast->chip == AST2400) {
if (ast->chip == AST2300 || ast->chip == AST2400 ||
ast->chip == AST2500) {
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa7, 0x78);
ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa6, 0x60);
} else if (ast->chip == AST2100 ||
@@ -800,7 +814,9 @@ static int ast_mode_valid(struct drm_connector *connector,
if ((mode->hdisplay == 1600) && (mode->vdisplay == 900))
return MODE_OK;
if ((ast->chip == AST2100) || (ast->chip == AST2200) || (ast->chip == AST2300) || (ast->chip == AST2400) || (ast->chip == AST1180)) {
if ((ast->chip == AST2100) || (ast->chip == AST2200) ||
(ast->chip == AST2300) || (ast->chip == AST2400) ||
(ast->chip == AST2500) || (ast->chip == AST1180)) {
if ((mode->hdisplay == 1920) && (mode->vdisplay == 1080))
return MODE_OK;