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path: root/drivers/gpu/drm/meson/meson_vclk.c
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Diffstat (limited to 'drivers/gpu/drm/meson/meson_vclk.c')
-rw-r--r--drivers/gpu/drm/meson/meson_vclk.c127
1 files changed, 86 insertions, 41 deletions
diff --git a/drivers/gpu/drm/meson/meson_vclk.c b/drivers/gpu/drm/meson/meson_vclk.c
index ae5473257f72..f6ba35a405f8 100644
--- a/drivers/gpu/drm/meson/meson_vclk.c
+++ b/drivers/gpu/drm/meson/meson_vclk.c
@@ -117,6 +117,8 @@
#define HDMI_PLL_RESET BIT(28)
#define HDMI_PLL_LOCK BIT(31)
+#define FREQ_1000_1001(_freq) DIV_ROUND_CLOSEST(_freq * 1000, 1001)
+
/* VID PLL Dividers */
enum {
VID_PLL_DIV_1 = 0,
@@ -323,7 +325,7 @@ static void meson_venci_cvbs_clock_config(struct meson_drm *priv)
enum {
/* PLL O1 O2 O3 VP DV EN TX */
/* 4320 /4 /4 /1 /5 /1 => /2 /2 */
- MESON_VCLK_HDMI_ENCI_54000 = 1,
+ MESON_VCLK_HDMI_ENCI_54000 = 0,
/* 4320 /4 /4 /1 /5 /1 => /1 /2 */
MESON_VCLK_HDMI_DDR_54000,
/* 2970 /4 /1 /1 /5 /1 => /1 /2 */
@@ -339,6 +341,7 @@ enum {
};
struct meson_vclk_params {
+ unsigned int pixel_freq;
unsigned int pll_base_freq;
unsigned int pll_od1;
unsigned int pll_od2;
@@ -347,6 +350,7 @@ struct meson_vclk_params {
unsigned int vclk_div;
} params[] = {
[MESON_VCLK_HDMI_ENCI_54000] = {
+ .pixel_freq = 54000,
.pll_base_freq = 4320000,
.pll_od1 = 4,
.pll_od2 = 4,
@@ -355,6 +359,7 @@ struct meson_vclk_params {
.vclk_div = 1,
},
[MESON_VCLK_HDMI_DDR_54000] = {
+ .pixel_freq = 54000,
.pll_base_freq = 4320000,
.pll_od1 = 4,
.pll_od2 = 4,
@@ -363,6 +368,7 @@ struct meson_vclk_params {
.vclk_div = 1,
},
[MESON_VCLK_HDMI_DDR_148500] = {
+ .pixel_freq = 148500,
.pll_base_freq = 2970000,
.pll_od1 = 4,
.pll_od2 = 1,
@@ -371,6 +377,7 @@ struct meson_vclk_params {
.vclk_div = 1,
},
[MESON_VCLK_HDMI_74250] = {
+ .pixel_freq = 74250,
.pll_base_freq = 2970000,
.pll_od1 = 2,
.pll_od2 = 2,
@@ -379,6 +386,7 @@ struct meson_vclk_params {
.vclk_div = 1,
},
[MESON_VCLK_HDMI_148500] = {
+ .pixel_freq = 148500,
.pll_base_freq = 2970000,
.pll_od1 = 1,
.pll_od2 = 2,
@@ -387,6 +395,7 @@ struct meson_vclk_params {
.vclk_div = 1,
},
[MESON_VCLK_HDMI_297000] = {
+ .pixel_freq = 297000,
.pll_base_freq = 2970000,
.pll_od1 = 1,
.pll_od2 = 1,
@@ -395,6 +404,7 @@ struct meson_vclk_params {
.vclk_div = 2,
},
[MESON_VCLK_HDMI_594000] = {
+ .pixel_freq = 594000,
.pll_base_freq = 5940000,
.pll_od1 = 1,
.pll_od2 = 1,
@@ -402,6 +412,7 @@ struct meson_vclk_params {
.vid_pll_div = VID_PLL_DIV_5,
.vclk_div = 1,
},
+ { /* sentinel */ },
};
static inline unsigned int pll_od_to_reg(unsigned int od)
@@ -626,12 +637,37 @@ static void meson_hdmi_pll_generic_set(struct meson_drm *priv,
pll_freq);
}
+enum drm_mode_status
+meson_vclk_vic_supported_freq(unsigned int freq)
+{
+ int i;
+
+ DRM_DEBUG_DRIVER("freq = %d\n", freq);
+
+ for (i = 0 ; params[i].pixel_freq ; ++i) {
+ DRM_DEBUG_DRIVER("i = %d pixel_freq = %d alt = %d\n",
+ i, params[i].pixel_freq,
+ FREQ_1000_1001(params[i].pixel_freq));
+ /* Match strict frequency */
+ if (freq == params[i].pixel_freq)
+ return MODE_OK;
+ /* Match 1000/1001 variant */
+ if (freq == FREQ_1000_1001(params[i].pixel_freq))
+ return MODE_OK;
+ }
+
+ return MODE_CLOCK_RANGE;
+}
+EXPORT_SYMBOL_GPL(meson_vclk_vic_supported_freq);
+
static void meson_vclk_set(struct meson_drm *priv, unsigned int pll_base_freq,
unsigned int od1, unsigned int od2, unsigned int od3,
unsigned int vid_pll_div, unsigned int vclk_div,
unsigned int hdmi_tx_div, unsigned int venc_div,
- bool hdmi_use_enci)
+ bool hdmi_use_enci, bool vic_alternate_clock)
{
+ unsigned int m = 0, frac = 0;
+
/* Set HDMI-TX sys clock */
regmap_update_bits(priv->hhi, HHI_HDMI_CLK_CNTL,
CTS_HDMI_SYS_SEL_MASK, 0);
@@ -646,34 +682,38 @@ static void meson_vclk_set(struct meson_drm *priv, unsigned int pll_base_freq,
} else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxbb-vpu")) {
switch (pll_base_freq) {
case 2970000:
- meson_hdmi_pll_set_params(priv, 0x3d, 0xe00,
- od1, od2, od3);
+ m = 0x3d;
+ frac = vic_alternate_clock ? 0xd02 : 0xe00;
break;
case 4320000:
- meson_hdmi_pll_set_params(priv, 0x5a, 0,
- od1, od2, od3);
+ m = vic_alternate_clock ? 0x59 : 0x5a;
+ frac = vic_alternate_clock ? 0xe8f : 0;
break;
case 5940000:
- meson_hdmi_pll_set_params(priv, 0x7b, 0xc00,
- od1, od2, od3);
+ m = 0x7b;
+ frac = vic_alternate_clock ? 0xa05 : 0xc00;
break;
}
+
+ meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3);
} else if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
meson_vpu_is_compatible(priv, "amlogic,meson-gxl-vpu")) {
switch (pll_base_freq) {
case 2970000:
- meson_hdmi_pll_set_params(priv, 0x7b, 0x300,
- od1, od2, od3);
+ m = 0x7b;
+ frac = vic_alternate_clock ? 0x281 : 0x300;
break;
case 4320000:
- meson_hdmi_pll_set_params(priv, 0xb4, 0,
- od1, od2, od3);
+ m = vic_alternate_clock ? 0xb3 : 0xb4;
+ frac = vic_alternate_clock ? 0x347 : 0;
break;
case 5940000:
- meson_hdmi_pll_set_params(priv, 0xf7, 0x200,
- od1, od2, od3);
+ m = 0xf7;
+ frac = vic_alternate_clock ? 0x102 : 0x200;
break;
}
+
+ meson_hdmi_pll_set_params(priv, m, frac, od1, od2, od3);
}
/* Setup vid_pll divider */
@@ -826,6 +866,7 @@ void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
unsigned int vclk_freq, unsigned int venc_freq,
unsigned int dac_freq, bool hdmi_use_enci)
{
+ bool vic_alternate_clock = false;
unsigned int freq;
unsigned int hdmi_tx_div;
unsigned int venc_div;
@@ -843,7 +884,7 @@ void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
* - encp encoder
*/
meson_vclk_set(priv, vclk_freq * 10, 0, 0, 0,
- VID_PLL_DIV_5, 2, 1, 1, false);
+ VID_PLL_DIV_5, 2, 1, 1, false, false);
return;
}
@@ -863,31 +904,35 @@ void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
return;
}
- switch (vclk_freq) {
- case 54000:
- if (hdmi_use_enci)
- freq = MESON_VCLK_HDMI_ENCI_54000;
- else
- freq = MESON_VCLK_HDMI_DDR_54000;
- break;
- case 74250:
- freq = MESON_VCLK_HDMI_74250;
- break;
- case 148500:
- if (dac_freq != 148500)
- freq = MESON_VCLK_HDMI_DDR_148500;
- else
- freq = MESON_VCLK_HDMI_148500;
- break;
- case 297000:
- freq = MESON_VCLK_HDMI_297000;
- break;
- case 594000:
- freq = MESON_VCLK_HDMI_594000;
- break;
- default:
- pr_err("Fatal Error, invalid HDMI vclk freq %d\n",
- vclk_freq);
+ for (freq = 0 ; params[freq].pixel_freq ; ++freq) {
+ if (vclk_freq == params[freq].pixel_freq ||
+ vclk_freq == FREQ_1000_1001(params[freq].pixel_freq)) {
+ if (vclk_freq != params[freq].pixel_freq)
+ vic_alternate_clock = true;
+ else
+ vic_alternate_clock = false;
+
+ if (freq == MESON_VCLK_HDMI_ENCI_54000 &&
+ !hdmi_use_enci)
+ continue;
+
+ if (freq == MESON_VCLK_HDMI_DDR_54000 &&
+ hdmi_use_enci)
+ continue;
+
+ if (freq == MESON_VCLK_HDMI_DDR_148500 &&
+ dac_freq == vclk_freq)
+ continue;
+
+ if (freq == MESON_VCLK_HDMI_148500 &&
+ dac_freq != vclk_freq)
+ continue;
+ break;
+ }
+ }
+
+ if (!params[freq].pixel_freq) {
+ pr_err("Fatal Error, invalid HDMI vclk freq %d\n", vclk_freq);
return;
}
@@ -895,6 +940,6 @@ void meson_vclk_setup(struct meson_drm *priv, unsigned int target,
params[freq].pll_od1, params[freq].pll_od2,
params[freq].pll_od3, params[freq].vid_pll_div,
params[freq].vclk_div, hdmi_tx_div, venc_div,
- hdmi_use_enci);
+ hdmi_use_enci, vic_alternate_clock);
}
EXPORT_SYMBOL_GPL(meson_vclk_setup);
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.