405 lines
10 KiB
C
405 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright 2017 Linaro Ltd.
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* Copyright 2017 ZTE Corporation.
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*/
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#include <linux/clk.h>
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#include <linux/component.h>
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#include <linux/mfd/syscon.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_print.h>
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#include <drm/drm_probe_helper.h>
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#include "zx_drm_drv.h"
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#include "zx_tvenc_regs.h"
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#include "zx_vou.h"
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struct zx_tvenc_pwrctrl {
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struct regmap *regmap;
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u32 reg;
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u32 mask;
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};
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struct zx_tvenc {
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struct drm_connector connector;
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struct drm_encoder encoder;
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struct device *dev;
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void __iomem *mmio;
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const struct vou_inf *inf;
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struct zx_tvenc_pwrctrl pwrctrl;
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};
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#define to_zx_tvenc(x) container_of(x, struct zx_tvenc, x)
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struct zx_tvenc_mode {
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struct drm_display_mode mode;
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u32 video_info;
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u32 video_res;
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u32 field1_param;
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u32 field2_param;
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u32 burst_line_odd1;
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u32 burst_line_even1;
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u32 burst_line_odd2;
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u32 burst_line_even2;
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u32 line_timing_param;
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u32 weight_value;
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u32 blank_black_level;
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u32 burst_level;
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u32 control_param;
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u32 sub_carrier_phase1;
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u32 phase_line_incr_cvbs;
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};
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/*
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* The CRM cannot directly provide a suitable frequency, and we have to
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* ask a multiplied rate from CRM and use the divider in VOU to get the
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* desired one.
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*/
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#define TVENC_CLOCK_MULTIPLIER 4
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static const struct zx_tvenc_mode tvenc_mode_pal = {
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.mode = {
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.clock = 13500 * TVENC_CLOCK_MULTIPLIER,
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.hdisplay = 720,
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.hsync_start = 720 + 12,
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.hsync_end = 720 + 12 + 2,
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.htotal = 720 + 12 + 2 + 130,
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.vdisplay = 576,
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.vsync_start = 576 + 2,
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.vsync_end = 576 + 2 + 2,
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.vtotal = 576 + 2 + 2 + 20,
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.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
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DRM_MODE_FLAG_INTERLACE,
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},
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.video_info = 0x00040040,
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.video_res = 0x05a9c760,
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.field1_param = 0x0004d416,
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.field2_param = 0x0009b94f,
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.burst_line_odd1 = 0x0004d406,
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.burst_line_even1 = 0x0009b53e,
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.burst_line_odd2 = 0x0004d805,
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.burst_line_even2 = 0x0009b93f,
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.line_timing_param = 0x06a96fdf,
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.weight_value = 0x00c188a0,
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.blank_black_level = 0x0000fcfc,
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.burst_level = 0x00001595,
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.control_param = 0x00000001,
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.sub_carrier_phase1 = 0x1504c566,
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.phase_line_incr_cvbs = 0xc068db8c,
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};
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static const struct zx_tvenc_mode tvenc_mode_ntsc = {
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.mode = {
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.clock = 13500 * TVENC_CLOCK_MULTIPLIER,
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.hdisplay = 720,
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.hsync_start = 720 + 16,
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.hsync_end = 720 + 16 + 2,
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.htotal = 720 + 16 + 2 + 120,
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.vdisplay = 480,
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.vsync_start = 480 + 3,
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.vsync_end = 480 + 3 + 2,
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.vtotal = 480 + 3 + 2 + 17,
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.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
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DRM_MODE_FLAG_INTERLACE,
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},
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.video_info = 0x00040080,
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.video_res = 0x05a8375a,
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.field1_param = 0x00041817,
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.field2_param = 0x0008351e,
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.burst_line_odd1 = 0x00041006,
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.burst_line_even1 = 0x0008290d,
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.burst_line_odd2 = 0x00000000,
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.burst_line_even2 = 0x00000000,
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.line_timing_param = 0x06a8ef9e,
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.weight_value = 0x00b68197,
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.blank_black_level = 0x0000f0f0,
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.burst_level = 0x0000009c,
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.control_param = 0x00000001,
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.sub_carrier_phase1 = 0x10f83e10,
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.phase_line_incr_cvbs = 0x80000000,
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};
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static const struct zx_tvenc_mode *tvenc_modes[] = {
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&tvenc_mode_pal,
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&tvenc_mode_ntsc,
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};
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static const struct zx_tvenc_mode *
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zx_tvenc_find_zmode(struct drm_display_mode *mode)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(tvenc_modes); i++) {
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const struct zx_tvenc_mode *zmode = tvenc_modes[i];
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if (drm_mode_equal(mode, &zmode->mode))
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return zmode;
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}
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return NULL;
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}
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static void zx_tvenc_encoder_mode_set(struct drm_encoder *encoder,
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struct drm_display_mode *mode,
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struct drm_display_mode *adj_mode)
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{
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struct zx_tvenc *tvenc = to_zx_tvenc(encoder);
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const struct zx_tvenc_mode *zmode;
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struct vou_div_config configs[] = {
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{ VOU_DIV_INF, VOU_DIV_4 },
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{ VOU_DIV_TVENC, VOU_DIV_1 },
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{ VOU_DIV_LAYER, VOU_DIV_2 },
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};
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zx_vou_config_dividers(encoder->crtc, configs, ARRAY_SIZE(configs));
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zmode = zx_tvenc_find_zmode(mode);
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if (!zmode) {
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DRM_DEV_ERROR(tvenc->dev, "failed to find zmode\n");
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return;
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}
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zx_writel(tvenc->mmio + VENC_VIDEO_INFO, zmode->video_info);
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zx_writel(tvenc->mmio + VENC_VIDEO_RES, zmode->video_res);
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zx_writel(tvenc->mmio + VENC_FIELD1_PARAM, zmode->field1_param);
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zx_writel(tvenc->mmio + VENC_FIELD2_PARAM, zmode->field2_param);
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zx_writel(tvenc->mmio + VENC_LINE_O_1, zmode->burst_line_odd1);
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zx_writel(tvenc->mmio + VENC_LINE_E_1, zmode->burst_line_even1);
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zx_writel(tvenc->mmio + VENC_LINE_O_2, zmode->burst_line_odd2);
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zx_writel(tvenc->mmio + VENC_LINE_E_2, zmode->burst_line_even2);
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zx_writel(tvenc->mmio + VENC_LINE_TIMING_PARAM,
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zmode->line_timing_param);
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zx_writel(tvenc->mmio + VENC_WEIGHT_VALUE, zmode->weight_value);
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zx_writel(tvenc->mmio + VENC_BLANK_BLACK_LEVEL,
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zmode->blank_black_level);
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zx_writel(tvenc->mmio + VENC_BURST_LEVEL, zmode->burst_level);
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zx_writel(tvenc->mmio + VENC_CONTROL_PARAM, zmode->control_param);
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zx_writel(tvenc->mmio + VENC_SUB_CARRIER_PHASE1,
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zmode->sub_carrier_phase1);
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zx_writel(tvenc->mmio + VENC_PHASE_LINE_INCR_CVBS,
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zmode->phase_line_incr_cvbs);
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}
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static void zx_tvenc_encoder_enable(struct drm_encoder *encoder)
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{
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struct zx_tvenc *tvenc = to_zx_tvenc(encoder);
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struct zx_tvenc_pwrctrl *pwrctrl = &tvenc->pwrctrl;
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/* Set bit to power up TVENC DAC */
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regmap_update_bits(pwrctrl->regmap, pwrctrl->reg, pwrctrl->mask,
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pwrctrl->mask);
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vou_inf_enable(VOU_TV_ENC, encoder->crtc);
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zx_writel(tvenc->mmio + VENC_ENABLE, 1);
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}
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static void zx_tvenc_encoder_disable(struct drm_encoder *encoder)
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{
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struct zx_tvenc *tvenc = to_zx_tvenc(encoder);
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struct zx_tvenc_pwrctrl *pwrctrl = &tvenc->pwrctrl;
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zx_writel(tvenc->mmio + VENC_ENABLE, 0);
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vou_inf_disable(VOU_TV_ENC, encoder->crtc);
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/* Clear bit to power down TVENC DAC */
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regmap_update_bits(pwrctrl->regmap, pwrctrl->reg, pwrctrl->mask, 0);
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}
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static const struct drm_encoder_helper_funcs zx_tvenc_encoder_helper_funcs = {
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.enable = zx_tvenc_encoder_enable,
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.disable = zx_tvenc_encoder_disable,
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.mode_set = zx_tvenc_encoder_mode_set,
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};
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static const struct drm_encoder_funcs zx_tvenc_encoder_funcs = {
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.destroy = drm_encoder_cleanup,
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};
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static int zx_tvenc_connector_get_modes(struct drm_connector *connector)
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{
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struct zx_tvenc *tvenc = to_zx_tvenc(connector);
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struct device *dev = tvenc->dev;
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int i;
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for (i = 0; i < ARRAY_SIZE(tvenc_modes); i++) {
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const struct zx_tvenc_mode *zmode = tvenc_modes[i];
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struct drm_display_mode *mode;
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mode = drm_mode_duplicate(connector->dev, &zmode->mode);
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if (!mode) {
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DRM_DEV_ERROR(dev, "failed to duplicate drm mode\n");
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continue;
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}
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drm_mode_set_name(mode);
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drm_mode_probed_add(connector, mode);
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}
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return i;
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}
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static enum drm_mode_status
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zx_tvenc_connector_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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struct zx_tvenc *tvenc = to_zx_tvenc(connector);
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const struct zx_tvenc_mode *zmode;
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zmode = zx_tvenc_find_zmode(mode);
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if (!zmode) {
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DRM_DEV_ERROR(tvenc->dev, "unsupported mode: %s\n", mode->name);
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return MODE_NOMODE;
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}
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return MODE_OK;
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}
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static struct drm_connector_helper_funcs zx_tvenc_connector_helper_funcs = {
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.get_modes = zx_tvenc_connector_get_modes,
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.mode_valid = zx_tvenc_connector_mode_valid,
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};
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static const struct drm_connector_funcs zx_tvenc_connector_funcs = {
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.fill_modes = drm_helper_probe_single_connector_modes,
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.destroy = drm_connector_cleanup,
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.reset = drm_atomic_helper_connector_reset,
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.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
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.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
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};
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static int zx_tvenc_register(struct drm_device *drm, struct zx_tvenc *tvenc)
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{
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struct drm_encoder *encoder = &tvenc->encoder;
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struct drm_connector *connector = &tvenc->connector;
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/*
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* The tvenc is designed to use aux channel, as there is a deflicker
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* block for the channel.
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*/
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encoder->possible_crtcs = BIT(1);
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drm_encoder_init(drm, encoder, &zx_tvenc_encoder_funcs,
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DRM_MODE_ENCODER_TVDAC, NULL);
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drm_encoder_helper_add(encoder, &zx_tvenc_encoder_helper_funcs);
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connector->interlace_allowed = true;
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drm_connector_init(drm, connector, &zx_tvenc_connector_funcs,
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DRM_MODE_CONNECTOR_Composite);
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drm_connector_helper_add(connector, &zx_tvenc_connector_helper_funcs);
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drm_connector_attach_encoder(connector, encoder);
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return 0;
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}
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static int zx_tvenc_pwrctrl_init(struct zx_tvenc *tvenc)
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{
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struct zx_tvenc_pwrctrl *pwrctrl = &tvenc->pwrctrl;
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struct device *dev = tvenc->dev;
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struct of_phandle_args out_args;
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struct regmap *regmap;
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int ret;
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ret = of_parse_phandle_with_fixed_args(dev->of_node,
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"zte,tvenc-power-control", 2, 0, &out_args);
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if (ret)
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return ret;
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regmap = syscon_node_to_regmap(out_args.np);
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if (IS_ERR(regmap)) {
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ret = PTR_ERR(regmap);
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goto out;
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}
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pwrctrl->regmap = regmap;
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pwrctrl->reg = out_args.args[0];
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pwrctrl->mask = out_args.args[1];
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out:
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of_node_put(out_args.np);
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return ret;
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}
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static int zx_tvenc_bind(struct device *dev, struct device *master, void *data)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct drm_device *drm = data;
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struct resource *res;
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struct zx_tvenc *tvenc;
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int ret;
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tvenc = devm_kzalloc(dev, sizeof(*tvenc), GFP_KERNEL);
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if (!tvenc)
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return -ENOMEM;
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tvenc->dev = dev;
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dev_set_drvdata(dev, tvenc);
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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tvenc->mmio = devm_ioremap_resource(dev, res);
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if (IS_ERR(tvenc->mmio)) {
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ret = PTR_ERR(tvenc->mmio);
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DRM_DEV_ERROR(dev, "failed to remap tvenc region: %d\n", ret);
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return ret;
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}
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ret = zx_tvenc_pwrctrl_init(tvenc);
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if (ret) {
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DRM_DEV_ERROR(dev, "failed to init power control: %d\n", ret);
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return ret;
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}
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ret = zx_tvenc_register(drm, tvenc);
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if (ret) {
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DRM_DEV_ERROR(dev, "failed to register tvenc: %d\n", ret);
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return ret;
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}
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return 0;
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}
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static void zx_tvenc_unbind(struct device *dev, struct device *master,
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void *data)
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{
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/* Nothing to do */
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}
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static const struct component_ops zx_tvenc_component_ops = {
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.bind = zx_tvenc_bind,
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.unbind = zx_tvenc_unbind,
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};
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static int zx_tvenc_probe(struct platform_device *pdev)
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{
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return component_add(&pdev->dev, &zx_tvenc_component_ops);
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}
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static int zx_tvenc_remove(struct platform_device *pdev)
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{
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component_del(&pdev->dev, &zx_tvenc_component_ops);
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return 0;
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}
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static const struct of_device_id zx_tvenc_of_match[] = {
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{ .compatible = "zte,zx296718-tvenc", },
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{ /* end */ },
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};
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MODULE_DEVICE_TABLE(of, zx_tvenc_of_match);
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struct platform_driver zx_tvenc_driver = {
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.probe = zx_tvenc_probe,
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.remove = zx_tvenc_remove,
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.driver = {
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.name = "zx-tvenc",
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.of_match_table = zx_tvenc_of_match,
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},
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};
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