diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/imx')
| -rw-r--r-- | drivers/gpu/drm/bridge/imx/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/imx/Makefile | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c | 88 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c | 20 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/imx/imx8qm-ldb.c | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/imx/imx8qxp-ldb.c | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c | 9 |
7 files changed, 124 insertions, 22 deletions
diff --git a/drivers/gpu/drm/bridge/imx/Kconfig b/drivers/gpu/drm/bridge/imx/Kconfig index 8dd89efa8ea7..9a480c6abb85 100644 --- a/drivers/gpu/drm/bridge/imx/Kconfig +++ b/drivers/gpu/drm/bridge/imx/Kconfig @@ -3,6 +3,16 @@ if ARCH_MXC || COMPILE_TEST config DRM_IMX_LDB_HELPER tristate +config DRM_IMX_LEGACY_BRIDGE + tristate + depends on DRM_IMX + help + This is a DRM bridge implementation for the DRM i.MX IPUv3 driver, + that uses of_get_drm_display_mode to acquire display mode. + + Newer designs should not use this bridge and should use proper panel + driver instead. + config DRM_IMX8MP_DW_HDMI_BRIDGE tristate "Freescale i.MX8MP HDMI-TX bridge support" depends on OF diff --git a/drivers/gpu/drm/bridge/imx/Makefile b/drivers/gpu/drm/bridge/imx/Makefile index edb0a7b71b30..dd5d48584806 100644 --- a/drivers/gpu/drm/bridge/imx/Makefile +++ b/drivers/gpu/drm/bridge/imx/Makefile @@ -1,4 +1,5 @@ obj-$(CONFIG_DRM_IMX_LDB_HELPER) += imx-ldb-helper.o +obj-$(CONFIG_DRM_IMX_LEGACY_BRIDGE) += imx-legacy-bridge.o obj-$(CONFIG_DRM_IMX8MP_DW_HDMI_BRIDGE) += imx8mp-hdmi-tx.o obj-$(CONFIG_DRM_IMX8MP_HDMI_PVI) += imx8mp-hdmi-pvi.o obj-$(CONFIG_DRM_IMX8QM_LDB) += imx8qm-ldb.o diff --git a/drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c b/drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c new file mode 100644 index 000000000000..3ebf0b9866de --- /dev/null +++ b/drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c @@ -0,0 +1,88 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Freescale i.MX drm driver + * + * bridge driver for legacy DT bindings, utilizing display-timings node + */ + +#include <drm/drm_bridge.h> +#include <drm/drm_modes.h> +#include <drm/drm_probe_helper.h> +#include <drm/bridge/imx.h> + +#include <video/of_display_timing.h> +#include <video/of_videomode.h> + +struct imx_legacy_bridge { + struct drm_bridge base; + + struct drm_display_mode mode; + u32 bus_flags; +}; + +#define to_imx_legacy_bridge(bridge) container_of(bridge, struct imx_legacy_bridge, base) + +static int imx_legacy_bridge_attach(struct drm_bridge *bridge, + enum drm_bridge_attach_flags flags) +{ + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) + return -EINVAL; + + return 0; +} + +static int imx_legacy_bridge_get_modes(struct drm_bridge *bridge, + struct drm_connector *connector) +{ + struct imx_legacy_bridge *imx_bridge = to_imx_legacy_bridge(bridge); + int ret; + + ret = drm_connector_helper_get_modes_fixed(connector, &imx_bridge->mode); + if (ret) + return ret; + + connector->display_info.bus_flags = imx_bridge->bus_flags; + + return 0; +} + +struct drm_bridge_funcs imx_legacy_bridge_funcs = { + .attach = imx_legacy_bridge_attach, + .get_modes = imx_legacy_bridge_get_modes, +}; + +struct drm_bridge *devm_imx_drm_legacy_bridge(struct device *dev, + struct device_node *np, + int type) +{ + struct imx_legacy_bridge *imx_bridge; + int ret; + + imx_bridge = devm_kzalloc(dev, sizeof(*imx_bridge), GFP_KERNEL); + if (!imx_bridge) + return ERR_PTR(-ENOMEM); + + ret = of_get_drm_display_mode(np, + &imx_bridge->mode, + &imx_bridge->bus_flags, + OF_USE_NATIVE_MODE); + if (ret) + return ERR_PTR(ret); + + imx_bridge->mode.type |= DRM_MODE_TYPE_DRIVER; + + imx_bridge->base.funcs = &imx_legacy_bridge_funcs; + imx_bridge->base.of_node = np; + imx_bridge->base.ops = DRM_BRIDGE_OP_MODES; + imx_bridge->base.type = type; + + ret = devm_drm_bridge_add(dev, &imx_bridge->base); + if (ret) + return ERR_PTR(ret); + + return &imx_bridge->base; +} +EXPORT_SYMBOL_GPL(devm_imx_drm_legacy_bridge); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Freescale i.MX DRM bridge driver for legacy DT bindings"); diff --git a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c index 13bc570c5473..8fcc6d18f4ab 100644 --- a/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c +++ b/drivers/gpu/drm/bridge/imx/imx8mp-hdmi-tx.c @@ -23,6 +23,7 @@ imx8mp_hdmi_mode_valid(struct dw_hdmi *dw_hdmi, void *data, const struct drm_display_mode *mode) { struct imx8mp_hdmi *hdmi = (struct imx8mp_hdmi *)data; + long round_rate; if (mode->clock < 13500) return MODE_CLOCK_LOW; @@ -30,8 +31,14 @@ imx8mp_hdmi_mode_valid(struct dw_hdmi *dw_hdmi, void *data, if (mode->clock > 297000) return MODE_CLOCK_HIGH; - if (clk_round_rate(hdmi->pixclk, mode->clock * 1000) != - mode->clock * 1000) + round_rate = clk_round_rate(hdmi->pixclk, mode->clock * 1000); + /* imx8mp's pixel clock generator (fsl-samsung-hdmi) cannot generate + * all possible frequencies, so allow some tolerance to support more + * modes. + * Allow 0.5% difference allowed in various standards (VESA, CEA861) + * 0.5% = 5/1000 tolerance (mode->clock is 1/1000) + */ + if (abs(round_rate - mode->clock * 1000) > mode->clock * 5) return MODE_CLOCK_RANGE; /* We don't support double-clocked and Interlaced modes */ @@ -111,12 +118,12 @@ static void imx8mp_dw_hdmi_remove(struct platform_device *pdev) dw_hdmi_remove(hdmi->dw_hdmi); } -static int __maybe_unused imx8mp_dw_hdmi_pm_suspend(struct device *dev) +static int imx8mp_dw_hdmi_pm_suspend(struct device *dev) { return 0; } -static int __maybe_unused imx8mp_dw_hdmi_pm_resume(struct device *dev) +static int imx8mp_dw_hdmi_pm_resume(struct device *dev) { struct imx8mp_hdmi *hdmi = dev_get_drvdata(dev); @@ -126,8 +133,7 @@ static int __maybe_unused imx8mp_dw_hdmi_pm_resume(struct device *dev) } static const struct dev_pm_ops imx8mp_dw_hdmi_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(imx8mp_dw_hdmi_pm_suspend, - imx8mp_dw_hdmi_pm_resume) + SYSTEM_SLEEP_PM_OPS(imx8mp_dw_hdmi_pm_suspend, imx8mp_dw_hdmi_pm_resume) }; static const struct of_device_id imx8mp_dw_hdmi_of_table[] = { @@ -142,7 +148,7 @@ static struct platform_driver imx8mp_dw_hdmi_platform_driver = { .driver = { .name = "imx8mp-dw-hdmi-tx", .of_match_table = imx8mp_dw_hdmi_of_table, - .pm = &imx8mp_dw_hdmi_pm_ops, + .pm = pm_ptr(&imx8mp_dw_hdmi_pm_ops), }, }; diff --git a/drivers/gpu/drm/bridge/imx/imx8qm-ldb.c b/drivers/gpu/drm/bridge/imx/imx8qm-ldb.c index 21471a9a28b2..c879e37f5811 100644 --- a/drivers/gpu/drm/bridge/imx/imx8qm-ldb.c +++ b/drivers/gpu/drm/bridge/imx/imx8qm-ldb.c @@ -542,12 +542,12 @@ static void imx8qm_ldb_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); } -static int __maybe_unused imx8qm_ldb_runtime_suspend(struct device *dev) +static int imx8qm_ldb_runtime_suspend(struct device *dev) { return 0; } -static int __maybe_unused imx8qm_ldb_runtime_resume(struct device *dev) +static int imx8qm_ldb_runtime_resume(struct device *dev) { struct imx8qm_ldb *imx8qm_ldb = dev_get_drvdata(dev); struct ldb *ldb = &imx8qm_ldb->base; @@ -559,8 +559,7 @@ static int __maybe_unused imx8qm_ldb_runtime_resume(struct device *dev) } static const struct dev_pm_ops imx8qm_ldb_pm_ops = { - SET_RUNTIME_PM_OPS(imx8qm_ldb_runtime_suspend, - imx8qm_ldb_runtime_resume, NULL) + RUNTIME_PM_OPS(imx8qm_ldb_runtime_suspend, imx8qm_ldb_runtime_resume, NULL) }; static const struct of_device_id imx8qm_ldb_dt_ids[] = { @@ -573,7 +572,7 @@ static struct platform_driver imx8qm_ldb_driver = { .probe = imx8qm_ldb_probe, .remove_new = imx8qm_ldb_remove, .driver = { - .pm = &imx8qm_ldb_pm_ops, + .pm = pm_ptr(&imx8qm_ldb_pm_ops), .name = DRIVER_NAME, .of_match_table = imx8qm_ldb_dt_ids, }, diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-ldb.c b/drivers/gpu/drm/bridge/imx/imx8qxp-ldb.c index 7984da9c0a35..b33011f397f0 100644 --- a/drivers/gpu/drm/bridge/imx/imx8qxp-ldb.c +++ b/drivers/gpu/drm/bridge/imx/imx8qxp-ldb.c @@ -678,12 +678,12 @@ static void imx8qxp_ldb_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); } -static int __maybe_unused imx8qxp_ldb_runtime_suspend(struct device *dev) +static int imx8qxp_ldb_runtime_suspend(struct device *dev) { return 0; } -static int __maybe_unused imx8qxp_ldb_runtime_resume(struct device *dev) +static int imx8qxp_ldb_runtime_resume(struct device *dev) { struct imx8qxp_ldb *imx8qxp_ldb = dev_get_drvdata(dev); struct ldb *ldb = &imx8qxp_ldb->base; @@ -695,8 +695,7 @@ static int __maybe_unused imx8qxp_ldb_runtime_resume(struct device *dev) } static const struct dev_pm_ops imx8qxp_ldb_pm_ops = { - SET_RUNTIME_PM_OPS(imx8qxp_ldb_runtime_suspend, - imx8qxp_ldb_runtime_resume, NULL) + RUNTIME_PM_OPS(imx8qxp_ldb_runtime_suspend, imx8qxp_ldb_runtime_resume, NULL) }; static const struct of_device_id imx8qxp_ldb_dt_ids[] = { @@ -709,7 +708,7 @@ static struct platform_driver imx8qxp_ldb_driver = { .probe = imx8qxp_ldb_probe, .remove_new = imx8qxp_ldb_remove, .driver = { - .pm = &imx8qxp_ldb_pm_ops, + .pm = pm_ptr(&imx8qxp_ldb_pm_ops), .name = DRIVER_NAME, .of_match_table = imx8qxp_ldb_dt_ids, }, diff --git a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c index e6dbbdc87ce2..ce43e4069e21 100644 --- a/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c +++ b/drivers/gpu/drm/bridge/imx/imx8qxp-pixel-combiner.c @@ -371,7 +371,7 @@ static void imx8qxp_pc_bridge_remove(struct platform_device *pdev) pm_runtime_disable(&pdev->dev); } -static int __maybe_unused imx8qxp_pc_runtime_suspend(struct device *dev) +static int imx8qxp_pc_runtime_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct imx8qxp_pc *pc = platform_get_drvdata(pdev); @@ -393,7 +393,7 @@ static int __maybe_unused imx8qxp_pc_runtime_suspend(struct device *dev) return ret; } -static int __maybe_unused imx8qxp_pc_runtime_resume(struct device *dev) +static int imx8qxp_pc_runtime_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct imx8qxp_pc *pc = platform_get_drvdata(pdev); @@ -415,8 +415,7 @@ static int __maybe_unused imx8qxp_pc_runtime_resume(struct device *dev) } static const struct dev_pm_ops imx8qxp_pc_pm_ops = { - SET_RUNTIME_PM_OPS(imx8qxp_pc_runtime_suspend, - imx8qxp_pc_runtime_resume, NULL) + RUNTIME_PM_OPS(imx8qxp_pc_runtime_suspend, imx8qxp_pc_runtime_resume, NULL) }; static const struct of_device_id imx8qxp_pc_dt_ids[] = { @@ -430,7 +429,7 @@ static struct platform_driver imx8qxp_pc_bridge_driver = { .probe = imx8qxp_pc_bridge_probe, .remove_new = imx8qxp_pc_bridge_remove, .driver = { - .pm = &imx8qxp_pc_pm_ops, + .pm = pm_ptr(&imx8qxp_pc_pm_ops), .name = DRIVER_NAME, .of_match_table = imx8qxp_pc_dt_ids, }, |