--- /dev/null
+/*
+ * Copyright 2017 Linaro Ltd.
+ * Copyright 2017 ZTE Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/mfd/syscon.h>
+#include <linux/regmap.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drmP.h>
+
+#include "zx_drm_drv.h"
+#include "zx_tvenc_regs.h"
+#include "zx_vou.h"
+
+struct zx_tvenc_pwrctrl {
+ struct regmap *regmap;
+ u32 reg;
+ u32 mask;
+};
+
+struct zx_tvenc {
+ struct drm_connector connector;
+ struct drm_encoder encoder;
+ struct device *dev;
+ void __iomem *mmio;
+ const struct vou_inf *inf;
+ struct zx_tvenc_pwrctrl pwrctrl;
+};
+
+#define to_zx_tvenc(x) container_of(x, struct zx_tvenc, x)
+
+struct zx_tvenc_mode {
+ struct drm_display_mode mode;
+ u32 video_info;
+ u32 video_res;
+ u32 field1_param;
+ u32 field2_param;
+ u32 burst_line_odd1;
+ u32 burst_line_even1;
+ u32 burst_line_odd2;
+ u32 burst_line_even2;
+ u32 line_timing_param;
+ u32 weight_value;
+ u32 blank_black_level;
+ u32 burst_level;
+ u32 control_param;
+ u32 sub_carrier_phase1;
+ u32 phase_line_incr_cvbs;
+};
+
+/*
+ * The CRM cannot directly provide a suitable frequency, and we have to
+ * ask a multiplied rate from CRM and use the divider in VOU to get the
+ * desired one.
+ */
+#define TVENC_CLOCK_MULTIPLIER 4
+
+static const struct zx_tvenc_mode tvenc_mode_pal = {
+ .mode = {
+ .clock = 13500 * TVENC_CLOCK_MULTIPLIER,
+ .hdisplay = 720,
+ .hsync_start = 720 + 12,
+ .hsync_end = 720 + 12 + 2,
+ .htotal = 720 + 12 + 2 + 130,
+ .vdisplay = 576,
+ .vsync_start = 576 + 2,
+ .vsync_end = 576 + 2 + 2,
+ .vtotal = 576 + 2 + 2 + 20,
+ .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
+ DRM_MODE_FLAG_INTERLACE,
+ },
+ .video_info = 0x00040040,
+ .video_res = 0x05a9c760,
+ .field1_param = 0x0004d416,
+ .field2_param = 0x0009b94f,
+ .burst_line_odd1 = 0x0004d406,
+ .burst_line_even1 = 0x0009b53e,
+ .burst_line_odd2 = 0x0004d805,
+ .burst_line_even2 = 0x0009b93f,
+ .line_timing_param = 0x06a96fdf,
+ .weight_value = 0x00c188a0,
+ .blank_black_level = 0x0000fcfc,
+ .burst_level = 0x00001595,
+ .control_param = 0x00000001,
+ .sub_carrier_phase1 = 0x1504c566,
+ .phase_line_incr_cvbs = 0xc068db8c,
+};
+
+static const struct zx_tvenc_mode tvenc_mode_ntsc = {
+ .mode = {
+ .clock = 13500 * TVENC_CLOCK_MULTIPLIER,
+ .hdisplay = 720,
+ .hsync_start = 720 + 16,
+ .hsync_end = 720 + 16 + 2,
+ .htotal = 720 + 16 + 2 + 120,
+ .vdisplay = 480,
+ .vsync_start = 480 + 3,
+ .vsync_end = 480 + 3 + 2,
+ .vtotal = 480 + 3 + 2 + 17,
+ .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC |
+ DRM_MODE_FLAG_INTERLACE,
+ },
+ .video_info = 0x00040080,
+ .video_res = 0x05a8375a,
+ .field1_param = 0x00041817,
+ .field2_param = 0x0008351e,
+ .burst_line_odd1 = 0x00041006,
+ .burst_line_even1 = 0x0008290d,
+ .burst_line_odd2 = 0x00000000,
+ .burst_line_even2 = 0x00000000,
+ .line_timing_param = 0x06a8ef9e,
+ .weight_value = 0x00b68197,
+ .blank_black_level = 0x0000f0f0,
+ .burst_level = 0x0000009c,
+ .control_param = 0x00000001,
+ .sub_carrier_phase1 = 0x10f83e10,
+ .phase_line_incr_cvbs = 0x80000000,
+};
+
+static const struct zx_tvenc_mode *tvenc_modes[] = {
+ &tvenc_mode_pal,
+ &tvenc_mode_ntsc,
+};
+
+static const struct zx_tvenc_mode *
+zx_tvenc_find_zmode(struct drm_display_mode *mode)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tvenc_modes); i++) {
+ const struct zx_tvenc_mode *zmode = tvenc_modes[i];
+
+ if (drm_mode_equal(mode, &zmode->mode))
+ return zmode;
+ }
+
+ return NULL;
+}
+
+static void zx_tvenc_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adj_mode)
+{
+ struct zx_tvenc *tvenc = to_zx_tvenc(encoder);
+ const struct zx_tvenc_mode *zmode;
+ struct vou_div_config configs[] = {
+ { VOU_DIV_INF, VOU_DIV_4 },
+ { VOU_DIV_TVENC, VOU_DIV_1 },
+ { VOU_DIV_LAYER, VOU_DIV_2 },
+ };
+
+ zx_vou_config_dividers(encoder->crtc, configs, ARRAY_SIZE(configs));
+
+ zmode = zx_tvenc_find_zmode(mode);
+ if (!zmode) {
+ DRM_DEV_ERROR(tvenc->dev, "failed to find zmode\n");
+ return;
+ }
+
+ zx_writel(tvenc->mmio + VENC_VIDEO_INFO, zmode->video_info);
+ zx_writel(tvenc->mmio + VENC_VIDEO_RES, zmode->video_res);
+ zx_writel(tvenc->mmio + VENC_FIELD1_PARAM, zmode->field1_param);
+ zx_writel(tvenc->mmio + VENC_FIELD2_PARAM, zmode->field2_param);
+ zx_writel(tvenc->mmio + VENC_LINE_O_1, zmode->burst_line_odd1);
+ zx_writel(tvenc->mmio + VENC_LINE_E_1, zmode->burst_line_even1);
+ zx_writel(tvenc->mmio + VENC_LINE_O_2, zmode->burst_line_odd2);
+ zx_writel(tvenc->mmio + VENC_LINE_E_2, zmode->burst_line_even2);
+ zx_writel(tvenc->mmio + VENC_LINE_TIMING_PARAM,
+ zmode->line_timing_param);
+ zx_writel(tvenc->mmio + VENC_WEIGHT_VALUE, zmode->weight_value);
+ zx_writel(tvenc->mmio + VENC_BLANK_BLACK_LEVEL,
+ zmode->blank_black_level);
+ zx_writel(tvenc->mmio + VENC_BURST_LEVEL, zmode->burst_level);
+ zx_writel(tvenc->mmio + VENC_CONTROL_PARAM, zmode->control_param);
+ zx_writel(tvenc->mmio + VENC_SUB_CARRIER_PHASE1,
+ zmode->sub_carrier_phase1);
+ zx_writel(tvenc->mmio + VENC_PHASE_LINE_INCR_CVBS,
+ zmode->phase_line_incr_cvbs);
+}
+
+static void zx_tvenc_encoder_enable(struct drm_encoder *encoder)
+{
+ struct zx_tvenc *tvenc = to_zx_tvenc(encoder);
+ struct zx_tvenc_pwrctrl *pwrctrl = &tvenc->pwrctrl;
+
+ /* Set bit to power up TVENC DAC */
+ regmap_update_bits(pwrctrl->regmap, pwrctrl->reg, pwrctrl->mask,
+ pwrctrl->mask);
+
+ vou_inf_enable(VOU_TV_ENC, encoder->crtc);
+
+ zx_writel(tvenc->mmio + VENC_ENABLE, 1);
+}
+
+static void zx_tvenc_encoder_disable(struct drm_encoder *encoder)
+{
+ struct zx_tvenc *tvenc = to_zx_tvenc(encoder);
+ struct zx_tvenc_pwrctrl *pwrctrl = &tvenc->pwrctrl;
+
+ zx_writel(tvenc->mmio + VENC_ENABLE, 0);
+
+ vou_inf_disable(VOU_TV_ENC, encoder->crtc);
+
+ /* Clear bit to power down TVENC DAC */
+ regmap_update_bits(pwrctrl->regmap, pwrctrl->reg, pwrctrl->mask, 0);
+}
+
+static const struct drm_encoder_helper_funcs zx_tvenc_encoder_helper_funcs = {
+ .enable = zx_tvenc_encoder_enable,
+ .disable = zx_tvenc_encoder_disable,
+ .mode_set = zx_tvenc_encoder_mode_set,
+};
+
+static const struct drm_encoder_funcs zx_tvenc_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+static int zx_tvenc_connector_get_modes(struct drm_connector *connector)
+{
+ struct zx_tvenc *tvenc = to_zx_tvenc(connector);
+ struct device *dev = tvenc->dev;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(tvenc_modes); i++) {
+ const struct zx_tvenc_mode *zmode = tvenc_modes[i];
+ struct drm_display_mode *mode;
+
+ mode = drm_mode_duplicate(connector->dev, &zmode->mode);
+ if (!mode) {
+ DRM_DEV_ERROR(dev, "failed to duplicate drm mode\n");
+ continue;
+ }
+
+ drm_mode_set_name(mode);
+ drm_mode_probed_add(connector, mode);
+ }
+
+ return i;
+}
+
+static enum drm_mode_status
+zx_tvenc_connector_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ struct zx_tvenc *tvenc = to_zx_tvenc(connector);
+ const struct zx_tvenc_mode *zmode;
+
+ zmode = zx_tvenc_find_zmode(mode);
+ if (!zmode) {
+ DRM_DEV_ERROR(tvenc->dev, "unsupported mode: %s\n", mode->name);
+ return MODE_NOMODE;
+ }
+
+ return MODE_OK;
+}
+
+static struct drm_connector_helper_funcs zx_tvenc_connector_helper_funcs = {
+ .get_modes = zx_tvenc_connector_get_modes,
+ .mode_valid = zx_tvenc_connector_mode_valid,
+};
+
+static const struct drm_connector_funcs zx_tvenc_connector_funcs = {
+ .dpms = drm_atomic_helper_connector_dpms,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .destroy = drm_connector_cleanup,
+ .reset = drm_atomic_helper_connector_reset,
+ .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
+};
+
+static int zx_tvenc_register(struct drm_device *drm, struct zx_tvenc *tvenc)
+{
+ struct drm_encoder *encoder = &tvenc->encoder;
+ struct drm_connector *connector = &tvenc->connector;
+
+ /*
+ * The tvenc is designed to use aux channel, as there is a deflicker
+ * block for the channel.
+ */
+ encoder->possible_crtcs = BIT(1);
+
+ drm_encoder_init(drm, encoder, &zx_tvenc_encoder_funcs,
+ DRM_MODE_ENCODER_TVDAC, NULL);
+ drm_encoder_helper_add(encoder, &zx_tvenc_encoder_helper_funcs);
+
+ connector->interlace_allowed = true;
+
+ drm_connector_init(drm, connector, &zx_tvenc_connector_funcs,
+ DRM_MODE_CONNECTOR_Composite);
+ drm_connector_helper_add(connector, &zx_tvenc_connector_helper_funcs);
+
+ drm_mode_connector_attach_encoder(connector, encoder);
+
+ return 0;
+}
+
+static int zx_tvenc_pwrctrl_init(struct zx_tvenc *tvenc)
+{
+ struct zx_tvenc_pwrctrl *pwrctrl = &tvenc->pwrctrl;
+ struct device *dev = tvenc->dev;
+ struct of_phandle_args out_args;
+ struct regmap *regmap;
+ int ret;
+
+ ret = of_parse_phandle_with_fixed_args(dev->of_node,
+ "zte,tvenc-power-control", 2, 0, &out_args);
+ if (ret)
+ return ret;
+
+ regmap = syscon_node_to_regmap(out_args.np);
+ if (IS_ERR(regmap)) {
+ ret = PTR_ERR(regmap);
+ goto out;
+ }
+
+ pwrctrl->regmap = regmap;
+ pwrctrl->reg = out_args.args[0];
+ pwrctrl->mask = out_args.args[1];
+
+out:
+ of_node_put(out_args.np);
+ return ret;
+}
+
+static int zx_tvenc_bind(struct device *dev, struct device *master, void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct drm_device *drm = data;
+ struct resource *res;
+ struct zx_tvenc *tvenc;
+ int ret;
+
+ tvenc = devm_kzalloc(dev, sizeof(*tvenc), GFP_KERNEL);
+ if (!tvenc)
+ return -ENOMEM;
+
+ tvenc->dev = dev;
+ dev_set_drvdata(dev, tvenc);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ tvenc->mmio = devm_ioremap_resource(dev, res);
+ if (IS_ERR(tvenc->mmio)) {
+ ret = PTR_ERR(tvenc->mmio);
+ DRM_DEV_ERROR(dev, "failed to remap tvenc region: %d\n", ret);
+ return ret;
+ }
+
+ ret = zx_tvenc_pwrctrl_init(tvenc);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to init power control: %d\n", ret);
+ return ret;
+ }
+
+ ret = zx_tvenc_register(drm, tvenc);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to register tvenc: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void zx_tvenc_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ /* Nothing to do */
+}
+
+static const struct component_ops zx_tvenc_component_ops = {
+ .bind = zx_tvenc_bind,
+ .unbind = zx_tvenc_unbind,
+};
+
+static int zx_tvenc_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &zx_tvenc_component_ops);
+}
+
+static int zx_tvenc_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &zx_tvenc_component_ops);
+ return 0;
+}
+
+static const struct of_device_id zx_tvenc_of_match[] = {
+ { .compatible = "zte,zx296718-tvenc", },
+ { /* end */ },
+};
+MODULE_DEVICE_TABLE(of, zx_tvenc_of_match);
+
+struct platform_driver zx_tvenc_driver = {
+ .probe = zx_tvenc_probe,
+ .remove = zx_tvenc_remove,
+ .driver = {
+ .name = "zx-tvenc",
+ .of_match_table = zx_tvenc_of_match,
+ },
+};
projects / linux-2.6-microblaze.git / commitdiff