1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) STMicroelectronics SA 2014 4 * Author: Vincent Abriou <vincent.abriou@st.com> for STMicroelectronics. 5 */ 6 7 #ifndef _STI_HDMI_H_ 8 #define _STI_HDMI_H_ 9 10 #include <linux/hdmi.h> 11 #include <linux/platform_device.h> 12 13 #include <media/cec-notifier.h> 14 15 #include <drm/drm_modes.h> 16 #include <drm/drm_property.h> 17 18 #define HDMI_STA 0x0010 19 #define HDMI_STA_DLL_LCK BIT(5) 20 #define HDMI_STA_HOT_PLUG BIT(4) 21 22 struct sti_hdmi; 23 24 struct hdmi_phy_ops { 25 bool (*start)(struct sti_hdmi *hdmi); 26 void (*stop)(struct sti_hdmi *hdmi); 27 }; 28 29 struct hdmi_audio_params { 30 bool enabled; 31 unsigned int sample_width; 32 unsigned int sample_rate; 33 struct hdmi_audio_infoframe cea; 34 }; 35 36 #define DEFAULT_COLORSPACE_MODE HDMI_COLORSPACE_RGB 37 38 /** 39 * STI hdmi structure 40 * 41 * @dev: driver device 42 * @drm_dev: pointer to drm device 43 * @mode: current display mode selected 44 * @regs: hdmi register 45 * @syscfg: syscfg register for pll rejection configuration 46 * @clk_pix: hdmi pixel clock 47 * @clk_tmds: hdmi tmds clock 48 * @clk_phy: hdmi phy clock 49 * @clk_audio: hdmi audio clock 50 * @irq: hdmi interrupt number 51 * @irq_status: interrupt status register 52 * @phy_ops: phy start/stop operations 53 * @enabled: true if hdmi is enabled else false 54 * @hpd: hot plug detect status 55 * @wait_event: wait event 56 * @event_received: wait event status 57 * @reset: reset control of the hdmi phy 58 * @ddc_adapt: i2c ddc adapter 59 * @colorspace: current colorspace selected 60 * @hdmi_monitor: true if HDMI monitor detected else DVI monitor assumed 61 * @audio_pdev: ASoC hdmi-codec platform device 62 * @audio: hdmi audio parameters. 63 * @drm_connector: hdmi connector 64 * @notifier: hotplug detect notifier 65 */ 66 struct sti_hdmi { 67 struct device dev; 68 struct drm_device *drm_dev; 69 struct drm_display_mode mode; 70 void __iomem *regs; 71 void __iomem *syscfg; 72 struct clk *clk_pix; 73 struct clk *clk_tmds; 74 struct clk *clk_phy; 75 struct clk *clk_audio; 76 int irq; 77 u32 irq_status; 78 struct hdmi_phy_ops *phy_ops; 79 bool enabled; 80 bool hpd; 81 wait_queue_head_t wait_event; 82 bool event_received; 83 struct reset_control *reset; 84 struct i2c_adapter *ddc_adapt; 85 enum hdmi_colorspace colorspace; 86 bool hdmi_monitor; 87 struct platform_device *audio_pdev; 88 struct hdmi_audio_params audio; 89 struct drm_connector *drm_connector; 90 struct cec_notifier *notifier; 91 }; 92 93 u32 hdmi_read(struct sti_hdmi *hdmi, int offset); 94 void hdmi_write(struct sti_hdmi *hdmi, u32 val, int offset); 95 96 /** 97 * hdmi phy config structure 98 * 99 * A pointer to an array of these structures is passed to a TMDS (HDMI) output 100 * via the control interface to provide board and SoC specific 101 * configurations of the HDMI PHY. Each entry in the array specifies a hardware 102 * specific configuration for a given TMDS clock frequency range. 103 * 104 * @min_tmds_freq: Lower bound of TMDS clock frequency this entry applies to 105 * @max_tmds_freq: Upper bound of TMDS clock frequency this entry applies to 106 * @config: SoC specific register configuration 107 */ 108 struct hdmi_phy_config { 109 u32 min_tmds_freq; 110 u32 max_tmds_freq; 111 u32 config[4]; 112 }; 113 114 #endif 115