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Diffstat (limited to 'drivers/gpu/drm/sti/sti_hdmi.h')
| -rw-r--r-- | drivers/gpu/drm/sti/sti_hdmi.h | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sti/sti_hdmi.h b/drivers/gpu/drm/sti/sti_hdmi.h new file mode 100644 index 000000000..1f6dc90b5 --- /dev/null +++ b/drivers/gpu/drm/sti/sti_hdmi.h @@ -0,0 +1,120 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) STMicroelectronics SA 2014 + * Author: Vincent Abriou <vincent.abriou@st.com> for STMicroelectronics. + */ + +#ifndef _STI_HDMI_H_ +#define _STI_HDMI_H_ + +#include <linux/hdmi.h> +#include <linux/platform_device.h> + +#include <media/cec-notifier.h> + +#include <drm/drm_modes.h> +#include <drm/drm_property.h> + +#define HDMI_STA 0x0010 +#define HDMI_STA_DLL_LCK BIT(5) +#define HDMI_STA_HOT_PLUG BIT(4) + +struct sti_hdmi; + +struct hdmi_phy_ops { + bool (*start)(struct sti_hdmi *hdmi); + void (*stop)(struct sti_hdmi *hdmi); +}; + +struct hdmi_audio_params { + bool enabled; + unsigned int sample_width; + unsigned int sample_rate; + struct hdmi_audio_infoframe cea; +}; + +static const struct drm_prop_enum_list colorspace_mode_names[] = { + { HDMI_COLORSPACE_RGB, "rgb" }, + { HDMI_COLORSPACE_YUV422, "yuv422" }, + { HDMI_COLORSPACE_YUV444, "yuv444" }, +}; + +#define DEFAULT_COLORSPACE_MODE HDMI_COLORSPACE_RGB + +/** + * STI hdmi structure + * + * @dev: driver device + * @drm_dev: pointer to drm device + * @mode: current display mode selected + * @regs: hdmi register + * @syscfg: syscfg register for pll rejection configuration + * @clk_pix: hdmi pixel clock + * @clk_tmds: hdmi tmds clock + * @clk_phy: hdmi phy clock + * @clk_audio: hdmi audio clock + * @irq: hdmi interrupt number + * @irq_status: interrupt status register + * @phy_ops: phy start/stop operations + * @enabled: true if hdmi is enabled else false + * @hpd: hot plug detect status + * @wait_event: wait event + * @event_received: wait event status + * @reset: reset control of the hdmi phy + * @ddc_adapt: i2c ddc adapter + * @colorspace: current colorspace selected + * @hdmi_monitor: true if HDMI monitor detected else DVI monitor assumed + * @audio_pdev: ASoC hdmi-codec platform device + * @audio: hdmi audio parameters. + * @drm_connector: hdmi connector + * @notifier: hotplug detect notifier + */ +struct sti_hdmi { + struct device dev; + struct drm_device *drm_dev; + struct drm_display_mode mode; + void __iomem *regs; + void __iomem *syscfg; + struct clk *clk_pix; + struct clk *clk_tmds; + struct clk *clk_phy; + struct clk *clk_audio; + int irq; + u32 irq_status; + struct hdmi_phy_ops *phy_ops; + bool enabled; + bool hpd; + wait_queue_head_t wait_event; + bool event_received; + struct reset_control *reset; + struct i2c_adapter *ddc_adapt; + enum hdmi_colorspace colorspace; + bool hdmi_monitor; + struct platform_device *audio_pdev; + struct hdmi_audio_params audio; + struct drm_connector *drm_connector; + struct cec_notifier *notifier; +}; + +u32 hdmi_read(struct sti_hdmi *hdmi, int offset); +void hdmi_write(struct sti_hdmi *hdmi, u32 val, int offset); + +/** + * hdmi phy config structure + * + * A pointer to an array of these structures is passed to a TMDS (HDMI) output + * via the control interface to provide board and SoC specific + * configurations of the HDMI PHY. Each entry in the array specifies a hardware + * specific configuration for a given TMDS clock frequency range. + * + * @min_tmds_freq: Lower bound of TMDS clock frequency this entry applies to + * @max_tmds_freq: Upper bound of TMDS clock frequency this entry applies to + * @config: SoC specific register configuration + */ +struct hdmi_phy_config { + u32 min_tmds_freq; + u32 max_tmds_freq; + u32 config[4]; +}; + +#endif |