drm/rockchip: lvds: Add PX30 support
Introduce PX30 LVDS support. This means adding the relevant helper functions, a specific probe and also the initialization of a specific PHY. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20191224143900.23567-10-miquel.raynal@bootlin.com
This commit is contained in:
Miquel Raynal
Heiko Stuebner
Родитель
22164fbe27
Коммит
cca1705c3d
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@ -10,6 +10,7 @@
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#include <linux/component.h>
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#include <linux/mfd/syscon.h>
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#include <linux/of_graph.h>
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#include <linux/phy/phy.h>
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#include <linux/pinctrl/devinfo.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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@ -54,6 +55,7 @@ struct rockchip_lvds {
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void __iomem *regs;
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struct regmap *grf;
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struct clk *pclk;
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struct phy *dphy;
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const struct rockchip_lvds_soc_data *soc_data;
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int output; /* rgb lvds or dual lvds output */
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int format; /* vesa or jeida format */
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@ -322,6 +324,103 @@ static void rk3288_lvds_encoder_disable(struct drm_encoder *encoder)
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drm_panel_unprepare(lvds->panel);
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}
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static int px30_lvds_poweron(struct rockchip_lvds *lvds)
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{
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int ret;
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ret = pm_runtime_get_sync(lvds->dev);
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if (ret < 0) {
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DRM_DEV_ERROR(lvds->dev, "failed to get pm runtime: %d\n", ret);
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return ret;
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}
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/* Enable LVDS mode */
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return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
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PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1),
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PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1));
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}
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static void px30_lvds_poweroff(struct rockchip_lvds *lvds)
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{
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regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
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PX30_LVDS_MODE_EN(1) | PX30_LVDS_P2S_EN(1),
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PX30_LVDS_MODE_EN(0) | PX30_LVDS_P2S_EN(0));
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pm_runtime_put(lvds->dev);
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}
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static int px30_lvds_grf_config(struct drm_encoder *encoder,
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struct drm_display_mode *mode)
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{
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struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
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if (lvds->output != DISPLAY_OUTPUT_LVDS) {
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DRM_DEV_ERROR(lvds->dev, "Unsupported display output %d\n",
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lvds->output);
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return -EINVAL;
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}
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/* Set format */
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return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
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PX30_LVDS_FORMAT(lvds->format),
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PX30_LVDS_FORMAT(lvds->format));
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}
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static int px30_lvds_set_vop_source(struct rockchip_lvds *lvds,
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struct drm_encoder *encoder)
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{
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int vop;
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vop = drm_of_encoder_active_endpoint_id(lvds->dev->of_node, encoder);
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if (vop < 0)
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return vop;
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return regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
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PX30_LVDS_VOP_SEL(1),
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PX30_LVDS_VOP_SEL(vop));
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}
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static void px30_lvds_encoder_enable(struct drm_encoder *encoder)
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{
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struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
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struct drm_display_mode *mode = &encoder->crtc->state->adjusted_mode;
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int ret;
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drm_panel_prepare(lvds->panel);
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ret = px30_lvds_poweron(lvds);
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if (ret) {
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DRM_DEV_ERROR(lvds->dev, "failed to power on LVDS: %d\n", ret);
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drm_panel_unprepare(lvds->panel);
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return;
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}
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ret = px30_lvds_grf_config(encoder, mode);
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if (ret) {
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DRM_DEV_ERROR(lvds->dev, "failed to configure LVDS: %d\n", ret);
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drm_panel_unprepare(lvds->panel);
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return;
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}
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ret = px30_lvds_set_vop_source(lvds, encoder);
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if (ret) {
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DRM_DEV_ERROR(lvds->dev, "failed to set VOP source: %d\n", ret);
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drm_panel_unprepare(lvds->panel);
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return;
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}
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drm_panel_enable(lvds->panel);
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}
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static void px30_lvds_encoder_disable(struct drm_encoder *encoder)
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{
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struct rockchip_lvds *lvds = encoder_to_lvds(encoder);
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drm_panel_disable(lvds->panel);
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px30_lvds_poweroff(lvds);
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drm_panel_unprepare(lvds->panel);
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}
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static const
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struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {
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.enable = rk3288_lvds_encoder_enable,
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@ -329,6 +428,13 @@ struct drm_encoder_helper_funcs rk3288_lvds_encoder_helper_funcs = {
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.atomic_check = rockchip_lvds_encoder_atomic_check,
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};
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static const
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struct drm_encoder_helper_funcs px30_lvds_encoder_helper_funcs = {
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.enable = px30_lvds_encoder_enable,
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.disable = px30_lvds_encoder_disable,
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.atomic_check = rockchip_lvds_encoder_atomic_check,
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};
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static const struct drm_encoder_funcs rockchip_lvds_encoder_funcs = {
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.destroy = drm_encoder_cleanup,
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};
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@ -379,16 +485,53 @@ static int rk3288_lvds_probe(struct platform_device *pdev,
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return 0;
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}
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static int px30_lvds_probe(struct platform_device *pdev,
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struct rockchip_lvds *lvds)
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{
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int ret;
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/* MSB */
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ret = regmap_update_bits(lvds->grf, PX30_LVDS_GRF_PD_VO_CON1,
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PX30_LVDS_MSBSEL(1),
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PX30_LVDS_MSBSEL(1));
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if (ret)
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return ret;
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/* PHY */
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lvds->dphy = devm_phy_get(&pdev->dev, "dphy");
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if (IS_ERR(lvds->dphy))
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return PTR_ERR(lvds->dphy);
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phy_init(lvds->dphy);
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if (ret)
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return ret;
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phy_set_mode(lvds->dphy, PHY_MODE_LVDS);
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if (ret)
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return ret;
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return phy_power_on(lvds->dphy);
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}
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static const struct rockchip_lvds_soc_data rk3288_lvds_data = {
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.probe = rk3288_lvds_probe,
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.helper_funcs = &rk3288_lvds_encoder_helper_funcs,
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};
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static const struct rockchip_lvds_soc_data px30_lvds_data = {
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.probe = px30_lvds_probe,
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.helper_funcs = &px30_lvds_encoder_helper_funcs,
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};
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static const struct of_device_id rockchip_lvds_dt_ids[] = {
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{
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.compatible = "rockchip,rk3288-lvds",
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.data = &rk3288_lvds_data
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},
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{
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.compatible = "rockchip,px30-lvds",
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.data = &px30_lvds_data
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},
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{}
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};
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MODULE_DEVICE_TABLE(of, rockchip_lvds_dt_ids);
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@ -106,4 +106,18 @@
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#define LVDS_VESA_18 2
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#define LVDS_JEIDA_18 3
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#define HIWORD_UPDATE(v, h, l) ((GENMASK(h, l) << 16) | ((v) << (l)))
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#define PX30_LVDS_GRF_PD_VO_CON0 0x434
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#define PX30_LVDS_TIE_CLKS(val) HIWORD_UPDATE(val, 8, 8)
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#define PX30_LVDS_INVERT_CLKS(val) HIWORD_UPDATE(val, 9, 9)
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#define PX30_LVDS_INVERT_DCLK(val) HIWORD_UPDATE(val, 5, 5)
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#define PX30_LVDS_GRF_PD_VO_CON1 0x438
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#define PX30_LVDS_FORMAT(val) HIWORD_UPDATE(val, 14, 13)
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#define PX30_LVDS_MODE_EN(val) HIWORD_UPDATE(val, 12, 12)
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#define PX30_LVDS_MSBSEL(val) HIWORD_UPDATE(val, 11, 11)
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#define PX30_LVDS_P2S_EN(val) HIWORD_UPDATE(val, 6, 6)
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#define PX30_LVDS_VOP_SEL(val) HIWORD_UPDATE(val, 1, 1)
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#endif /* _ROCKCHIP_LVDS_ */
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