[PATCH 7/9] drm/meson: dw-hdmi: use matched data
Jerome Brunet
jbrunet at baylibre.com
Tue Jul 30 05:50:17 PDT 2024
Using several string comparisons with if/else if/else clauses
is fairly inefficient and does not scale well.
Use matched data to tweak the driver depending on the matched
SoC instead.
Signed-off-by: Jerome Brunet <jbrunet at baylibre.com>
---
drivers/gpu/drm/meson/meson_dw_hdmi.c | 209 +++++++++++++++++---------
1 file changed, 139 insertions(+), 70 deletions(-)
diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
index 7c39e5c99043..ef059c5ef520 100644
--- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
@@ -125,8 +125,17 @@
#define HHI_HDMI_PHY_CNTL4 0x3b0 /* 0xec */
#define HHI_HDMI_PHY_CNTL5 0x3b4 /* 0xed */
+struct meson_dw_hdmi_speed {
+ const struct reg_sequence *regs;
+ unsigned int reg_num;
+ unsigned int limit;
+};
+
struct meson_dw_hdmi_data {
int (*reg_init)(struct device *dev);
+ const struct meson_dw_hdmi_speed *speeds;
+ unsigned int speed_num;
+ bool use_drm_infoframe;
u32 cntl0_init;
u32 cntl1_init;
};
@@ -185,78 +194,33 @@ struct meson_dw_hdmi {
struct regmap *top;
};
-static inline int dw_hdmi_is_compatible(struct meson_dw_hdmi *dw_hdmi,
- const char *compat)
-{
- return of_device_is_compatible(dw_hdmi->dev->of_node, compat);
-}
-
-/* Bridge */
-
/* Setup PHY bandwidth modes */
-static void meson_hdmi_phy_setup_mode(struct meson_dw_hdmi *dw_hdmi,
+static int meson_hdmi_phy_setup_mode(struct meson_dw_hdmi *dw_hdmi,
const struct drm_display_mode *mode,
bool mode_is_420)
{
struct meson_drm *priv = dw_hdmi->priv;
unsigned int pixel_clock = mode->clock;
+ int i;
/* For 420, pixel clock is half unlike venc clock */
- if (mode_is_420) pixel_clock /= 2;
-
- if (dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxl-dw-hdmi") ||
- dw_hdmi_is_compatible(dw_hdmi, "amlogic,meson-gxm-dw-hdmi")) {
- if (pixel_clock >= 371250) {
- /* 5.94Gbps, 3.7125Gbps */
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x333d3282);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2136315b);
- } else if (pixel_clock >= 297000) {
- /* 2.97Gbps */
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33303382);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2036315b);
- } else if (pixel_clock >= 148500) {
- /* 1.485Gbps */
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33303362);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2016315b);
- } else {
- /* 742.5Mbps, and below */
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33604142);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x0016315b);
- }
- } else if (dw_hdmi_is_compatible(dw_hdmi,
- "amlogic,meson-gxbb-dw-hdmi")) {
- if (pixel_clock >= 371250) {
- /* 5.94Gbps, 3.7125Gbps */
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33353245);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2100115b);
- } else if (pixel_clock >= 297000) {
- /* 2.97Gbps */
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33634283);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0xb000115b);
- } else {
- /* 1.485Gbps, and below */
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33632122);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2000115b);
- }
- } else if (dw_hdmi_is_compatible(dw_hdmi,
- "amlogic,meson-g12a-dw-hdmi")) {
- if (pixel_clock >= 371250) {
- /* 5.94Gbps, 3.7125Gbps */
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x37eb65c4);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2ab0ff3b);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL5, 0x0000080b);
- } else if (pixel_clock >= 297000) {
- /* 2.97Gbps */
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33eb6262);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2ab0ff3b);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL5, 0x00000003);
- } else {
- /* 1.485Gbps, and below */
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL0, 0x33eb4242);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL3, 0x2ab0ff3b);
- regmap_write(priv->hhi, HHI_HDMI_PHY_CNTL5, 0x00000003);
- }
+ if (mode_is_420)
+ pixel_clock /= 2;
+
+ for (i = 0; i < dw_hdmi->data->speed_num; i++) {
+ if (pixel_clock >= dw_hdmi->data->speeds[i].limit)
+ break;
}
+
+ /* No match found - Last entry should have a 0 limit */
+ if (WARN_ON(i == dw_hdmi->data->speed_num))
+ return -EINVAL;
+
+ regmap_multi_reg_write(priv->hhi,
+ dw_hdmi->data->speeds[i].regs,
+ dw_hdmi->data->speeds[i].reg_num);
+
+ return 0;
}
static inline void meson_dw_hdmi_phy_reset(struct meson_dw_hdmi *dw_hdmi)
@@ -543,22 +507,133 @@ static int meson_dw_init_regmap_g12(struct device *dev)
return 0;
}
+static const struct reg_sequence gxbb_3g7_regs[] = {
+ { .reg = HHI_HDMI_PHY_CNTL0, .def = 0x33353245 },
+ { .reg = HHI_HDMI_PHY_CNTL3, .def = 0x2100115b },
+};
+
+static const struct reg_sequence gxbb_3g_regs[] = {
+ { .reg = HHI_HDMI_PHY_CNTL0, .def = 0x33634283 },
+ { .reg = HHI_HDMI_PHY_CNTL3, .def = 0xb000115b },
+};
+
+static const struct reg_sequence gxbb_def_regs[] = {
+ { .reg = HHI_HDMI_PHY_CNTL0, .def = 0x33632122 },
+ { .reg = HHI_HDMI_PHY_CNTL3, .def = 0x2000115b },
+};
+
+static const struct meson_dw_hdmi_speed gxbb_speeds[] = {
+ {
+ .limit = 371250,
+ .regs = gxbb_3g7_regs,
+ .reg_num = ARRAY_SIZE(gxbb_3g7_regs)
+ }, {
+ .limit = 297000,
+ .regs = gxbb_3g_regs,
+ .reg_num = ARRAY_SIZE(gxbb_3g_regs)
+ }, {
+ .regs = gxbb_def_regs,
+ .reg_num = ARRAY_SIZE(gxbb_def_regs)
+ }
+};
+
static const struct meson_dw_hdmi_data meson_dw_hdmi_gxbb_data = {
.reg_init = meson_dw_init_regmap_gx,
.cntl0_init = 0x0,
.cntl1_init = PHY_CNTL1_INIT | PHY_INVERT,
+ .use_drm_infoframe = false,
+ .speeds = gxbb_speeds,
+ .speed_num = ARRAY_SIZE(gxbb_speeds),
+};
+
+static const struct reg_sequence gxl_3g7_regs[] = {
+ { .reg = HHI_HDMI_PHY_CNTL0, .def = 0x333d3282 },
+ { .reg = HHI_HDMI_PHY_CNTL3, .def = 0x2136315b },
+};
+
+static const struct reg_sequence gxl_3g_regs[] = {
+ { .reg = HHI_HDMI_PHY_CNTL0, .def = 0x33303382 },
+ { .reg = HHI_HDMI_PHY_CNTL3, .def = 0x2036315b },
+};
+
+static const struct reg_sequence gxl_def_regs[] = {
+ { .reg = HHI_HDMI_PHY_CNTL0, .def = 0x33303362 },
+ { .reg = HHI_HDMI_PHY_CNTL3, .def = 0x2016315b },
+};
+
+static const struct reg_sequence gxl_270m_regs[] = {
+ { .reg = HHI_HDMI_PHY_CNTL0, .def = 0x33604142 },
+ { .reg = HHI_HDMI_PHY_CNTL3, .def = 0x0016315b },
+};
+
+static const struct meson_dw_hdmi_speed gxl_speeds[] = {
+ {
+ .limit = 371250,
+ .regs = gxl_3g7_regs,
+ .reg_num = ARRAY_SIZE(gxl_3g7_regs)
+ }, {
+ .limit = 297000,
+ .regs = gxl_3g_regs,
+ .reg_num = ARRAY_SIZE(gxl_3g_regs)
+ }, {
+ .limit = 148500,
+ .regs = gxl_def_regs,
+ .reg_num = ARRAY_SIZE(gxl_def_regs)
+ }, {
+ .regs = gxl_270m_regs,
+ .reg_num = ARRAY_SIZE(gxl_270m_regs)
+ }
};
static const struct meson_dw_hdmi_data meson_dw_hdmi_gxl_data = {
.reg_init = meson_dw_init_regmap_gx,
.cntl0_init = 0x0,
.cntl1_init = PHY_CNTL1_INIT,
+ .use_drm_infoframe = true,
+ .speeds = gxl_speeds,
+ .speed_num = ARRAY_SIZE(gxl_speeds),
+};
+
+static const struct reg_sequence g12a_3g7_regs[] = {
+ { .reg = HHI_HDMI_PHY_CNTL0, .def = 0x37eb65c4 },
+ { .reg = HHI_HDMI_PHY_CNTL3, .def = 0x2ab0ff3b },
+ { .reg = HHI_HDMI_PHY_CNTL5, .def = 0x0000080b },
+};
+
+static const struct reg_sequence g12a_3g_regs[] = {
+ { .reg = HHI_HDMI_PHY_CNTL0, .def = 0x33eb6262 },
+ { .reg = HHI_HDMI_PHY_CNTL3, .def = 0x2ab0ff3b },
+ { .reg = HHI_HDMI_PHY_CNTL5, .def = 0x00000003 },
+};
+
+static const struct reg_sequence g12a_def_regs[] = {
+ { .reg = HHI_HDMI_PHY_CNTL0, .def = 0x33eb4242 },
+ { .reg = HHI_HDMI_PHY_CNTL3, .def = 0x2ab0ff3b },
+ { .reg = HHI_HDMI_PHY_CNTL5, .def = 0x00000003 },
+};
+
+static const struct meson_dw_hdmi_speed g12a_speeds[] = {
+ {
+ .limit = 371250,
+ .regs = g12a_3g7_regs,
+ .reg_num = ARRAY_SIZE(g12a_3g7_regs)
+ }, {
+ .limit = 297000,
+ .regs = g12a_3g_regs,
+ .reg_num = ARRAY_SIZE(g12a_3g_regs)
+ }, {
+ .regs = g12a_def_regs,
+ .reg_num = ARRAY_SIZE(g12a_def_regs)
+ }
};
static const struct meson_dw_hdmi_data meson_dw_hdmi_g12a_data = {
.reg_init = meson_dw_init_regmap_g12,
.cntl0_init = 0x000b4242, /* Bandgap */
.cntl1_init = PHY_CNTL1_INIT,
+ .use_drm_infoframe = true,
+ .speeds = g12a_speeds,
+ .speed_num = ARRAY_SIZE(g12a_speeds),
};
static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
@@ -590,7 +665,6 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
platform_set_drvdata(pdev, meson_dw_hdmi);
meson_dw_hdmi->priv = priv;
- meson_dw_hdmi->dev = dev;
meson_dw_hdmi->data = match;
dw_plat_data = &meson_dw_hdmi->dw_plat_data;
@@ -650,7 +724,6 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
meson_dw_hdmi_init(meson_dw_hdmi);
/* Bridge / Connector */
-
dw_plat_data->priv_data = meson_dw_hdmi;
dw_plat_data->phy_ops = &meson_dw_hdmi_phy_ops;
dw_plat_data->phy_name = "meson_dw_hdmi_phy";
@@ -659,11 +732,7 @@ static int meson_dw_hdmi_bind(struct device *dev, struct device *master,
dw_plat_data->ycbcr_420_allowed = true;
dw_plat_data->disable_cec = true;
dw_plat_data->output_port = 1;
-
- if (dw_hdmi_is_compatible(meson_dw_hdmi, "amlogic,meson-gxl-dw-hdmi") ||
- dw_hdmi_is_compatible(meson_dw_hdmi, "amlogic,meson-gxm-dw-hdmi") ||
- dw_hdmi_is_compatible(meson_dw_hdmi, "amlogic,meson-g12a-dw-hdmi"))
- dw_plat_data->use_drm_infoframe = true;
+ dw_plat_data->use_drm_infoframe = meson_dw_hdmi->data->use_drm_infoframe;
meson_dw_hdmi->hdmi = dw_hdmi_probe(pdev, &meson_dw_hdmi->dw_plat_data);
if (IS_ERR(meson_dw_hdmi->hdmi))
--
2.43.0
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