// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) STMicroelectronics SA 2014 * Authors: Benjamin Gaignard <[email protected]> * Fabien Dessenne <[email protected]> * Vincent Abriou <[email protected]> * for STMicroelectronics. */ #include <linux/module.h> #include <linux/io.h> #include <linux/notifier.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <drm/drm_modes.h> #include <drm/drm_print.h> #include "sti_drv.h" #include "sti_vtg.h" #define VTG_MODE_MASTER … /* registers offset */ #define VTG_MODE … #define VTG_CLKLN … #define VTG_HLFLN … #define VTG_DRST_AUTOC … #define VTG_VID_TFO … #define VTG_VID_TFS … #define VTG_VID_BFO … #define VTG_VID_BFS … #define VTG_HOST_ITS … #define VTG_HOST_ITS_BCLR … #define VTG_HOST_ITM_BCLR … #define VTG_HOST_ITM_BSET … #define VTG_H_HD_1 … #define VTG_TOP_V_VD_1 … #define VTG_BOT_V_VD_1 … #define VTG_TOP_V_HD_1 … #define VTG_BOT_V_HD_1 … #define VTG_H_HD_2 … #define VTG_TOP_V_VD_2 … #define VTG_BOT_V_VD_2 … #define VTG_TOP_V_HD_2 … #define VTG_BOT_V_HD_2 … #define VTG_H_HD_3 … #define VTG_TOP_V_VD_3 … #define VTG_BOT_V_VD_3 … #define VTG_TOP_V_HD_3 … #define VTG_BOT_V_HD_3 … #define VTG_H_HD_4 … #define VTG_TOP_V_VD_4 … #define VTG_BOT_V_VD_4 … #define VTG_TOP_V_HD_4 … #define VTG_BOT_V_HD_4 … #define VTG_IRQ_BOTTOM … #define VTG_IRQ_TOP … #define VTG_IRQ_MASK … /* Delay introduced by the HDMI in nb of pixel */ #define HDMI_DELAY … /* Delay introduced by the DVO in nb of pixel */ #define DVO_DELAY … /* delay introduced by the Arbitrary Waveform Generator in nb of pixels */ #define AWG_DELAY_HD … #define AWG_DELAY_ED … #define AWG_DELAY_SD … /* * STI VTG register offset structure * *@h_hd: stores the VTG_H_HD_x register offset *@top_v_vd: stores the VTG_TOP_V_VD_x register offset *@bot_v_vd: stores the VTG_BOT_V_VD_x register offset *@top_v_hd: stores the VTG_TOP_V_HD_x register offset *@bot_v_hd: stores the VTG_BOT_V_HD_x register offset */ struct sti_vtg_regs_offs { … }; #define VTG_MAX_SYNC_OUTPUT … static const struct sti_vtg_regs_offs vtg_regs_offs[VTG_MAX_SYNC_OUTPUT] = …; /* * STI VTG synchronisation parameters structure * *@hsync: sample number falling and rising edge *@vsync_line_top: vertical top field line number falling and rising edge *@vsync_line_bot: vertical bottom field line number falling and rising edge *@vsync_off_top: vertical top field sample number rising and falling edge *@vsync_off_bot: vertical bottom field sample number rising and falling edge */ struct sti_vtg_sync_params { … }; /* * STI VTG structure * * @regs: register mapping * @sync_params: synchronisation parameters used to generate timings * @irq: VTG irq * @irq_status: store the IRQ status value * @notifier_list: notifier callback * @crtc: the CRTC for vblank event */ struct sti_vtg { … }; struct sti_vtg *of_vtg_find(struct device_node *np) { … } static void vtg_reset(struct sti_vtg *vtg) { … } static void vtg_set_output_window(void __iomem *regs, const struct drm_display_mode *mode) { … } static void vtg_set_hsync_vsync_pos(struct sti_vtg_sync_params *sync, int delay, const struct drm_display_mode *mode) { … } static void vtg_set_mode(struct sti_vtg *vtg, int type, struct sti_vtg_sync_params *sync, const struct drm_display_mode *mode) { … } static void vtg_enable_irq(struct sti_vtg *vtg) { … } void sti_vtg_set_config(struct sti_vtg *vtg, const struct drm_display_mode *mode) { … } /** * sti_vtg_get_line_number * * @mode: display mode to be used * @y: line * * Return the line number according to the display mode taking * into account the Sync and Back Porch information. * Video frame line numbers start at 1, y starts at 0. * In interlaced modes the start line is the field line number of the odd * field, but y is still defined as a progressive frame. */ u32 sti_vtg_get_line_number(struct drm_display_mode mode, int y) { … } /** * sti_vtg_get_pixel_number * * @mode: display mode to be used * @x: row * * Return the pixel number according to the display mode taking * into account the Sync and Back Porch information. * Pixels are counted from 0. */ u32 sti_vtg_get_pixel_number(struct drm_display_mode mode, int x) { … } int sti_vtg_register_client(struct sti_vtg *vtg, struct notifier_block *nb, struct drm_crtc *crtc) { … } int sti_vtg_unregister_client(struct sti_vtg *vtg, struct notifier_block *nb) { … } static irqreturn_t vtg_irq_thread(int irq, void *arg) { … } static irqreturn_t vtg_irq(int irq, void *arg) { … } static int vtg_probe(struct platform_device *pdev) { … } static const struct of_device_id vtg_of_match[] = …; MODULE_DEVICE_TABLE(of, vtg_of_match); struct platform_driver sti_vtg_driver = …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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