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-rw-r--r--drivers/gpu/drm/Kconfig2
-rw-r--r--drivers/gpu/drm/Makefile1
-rw-r--r--drivers/gpu/drm/zte/Kconfig8
-rw-r--r--drivers/gpu/drm/zte/Makefile7
-rw-r--r--drivers/gpu/drm/zte/zx_drm_drv.c267
-rw-r--r--drivers/gpu/drm/zte/zx_drm_drv.h36
-rw-r--r--drivers/gpu/drm/zte/zx_hdmi.c624
-rw-r--r--drivers/gpu/drm/zte/zx_hdmi_regs.h56
-rw-r--r--drivers/gpu/drm/zte/zx_plane.c299
-rw-r--r--drivers/gpu/drm/zte/zx_plane.h26
-rw-r--r--drivers/gpu/drm/zte/zx_plane_regs.h91
-rw-r--r--drivers/gpu/drm/zte/zx_vou.c661
-rw-r--r--drivers/gpu/drm/zte/zx_vou.h46
-rw-r--r--drivers/gpu/drm/zte/zx_vou_regs.h157
14 files changed, 2281 insertions, 0 deletions
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index 483059a22b1b..a91f8cecbe0f 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -223,6 +223,8 @@ source "drivers/gpu/drm/hisilicon/Kconfig"
source "drivers/gpu/drm/mediatek/Kconfig"
+source "drivers/gpu/drm/zte/Kconfig"
+
# Keep legacy drivers last
menuconfig DRM_LEGACY
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 25c720454017..f3251750c92b 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -86,3 +86,4 @@ obj-$(CONFIG_DRM_FSL_DCU) += fsl-dcu/
obj-$(CONFIG_DRM_ETNAVIV) += etnaviv/
obj-$(CONFIG_DRM_ARCPGU)+= arc/
obj-y += hisilicon/
+obj-$(CONFIG_DRM_ZTE) += zte/
diff --git a/drivers/gpu/drm/zte/Kconfig b/drivers/gpu/drm/zte/Kconfig
new file mode 100644
index 000000000000..4065b2840f1c
--- /dev/null
+++ b/drivers/gpu/drm/zte/Kconfig
@@ -0,0 +1,8 @@
+config DRM_ZTE
+ tristate "DRM Support for ZTE SoCs"
+ depends on DRM && ARCH_ZX
+ select DRM_KMS_CMA_HELPER
+ select DRM_KMS_FB_HELPER
+ select DRM_KMS_HELPER
+ help
+ Choose this option to enable DRM on ZTE ZX SoCs.
diff --git a/drivers/gpu/drm/zte/Makefile b/drivers/gpu/drm/zte/Makefile
new file mode 100644
index 000000000000..699180bfd57c
--- /dev/null
+++ b/drivers/gpu/drm/zte/Makefile
@@ -0,0 +1,7 @@
+zxdrm-y := \
+ zx_drm_drv.o \
+ zx_hdmi.o \
+ zx_plane.o \
+ zx_vou.o
+
+obj-$(CONFIG_DRM_ZTE) += zxdrm.o
diff --git a/drivers/gpu/drm/zte/zx_drm_drv.c b/drivers/gpu/drm/zte/zx_drm_drv.c
new file mode 100644
index 000000000000..abc8099e6f53
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_drm_drv.c
@@ -0,0 +1,267 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 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/list.h>
+#include <linux/module.h>
+#include <linux/of_graph.h>
+#include <linux/of_platform.h>
+#include <linux/spinlock.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drmP.h>
+
+#include "zx_drm_drv.h"
+#include "zx_vou.h"
+
+struct zx_drm_private {
+ struct drm_fbdev_cma *fbdev;
+};
+
+static void zx_drm_fb_output_poll_changed(struct drm_device *drm)
+{
+ struct zx_drm_private *priv = drm->dev_private;
+
+ drm_fbdev_cma_hotplug_event(priv->fbdev);
+}
+
+static const struct drm_mode_config_funcs zx_drm_mode_config_funcs = {
+ .fb_create = drm_fb_cma_create,
+ .output_poll_changed = zx_drm_fb_output_poll_changed,
+ .atomic_check = drm_atomic_helper_check,
+ .atomic_commit = drm_atomic_helper_commit,
+};
+
+static void zx_drm_lastclose(struct drm_device *drm)
+{
+ struct zx_drm_private *priv = drm->dev_private;
+
+ drm_fbdev_cma_restore_mode(priv->fbdev);
+}
+
+static const struct file_operations zx_drm_fops = {
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .release = drm_release,
+ .unlocked_ioctl = drm_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = drm_compat_ioctl,
+#endif
+ .poll = drm_poll,
+ .read = drm_read,
+ .llseek = noop_llseek,
+ .mmap = drm_gem_cma_mmap,
+};
+
+static struct drm_driver zx_drm_driver = {
+ .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
+ DRIVER_ATOMIC,
+ .lastclose = zx_drm_lastclose,
+ .get_vblank_counter = drm_vblank_no_hw_counter,
+ .enable_vblank = zx_vou_enable_vblank,
+ .disable_vblank = zx_vou_disable_vblank,
+ .gem_free_object = drm_gem_cma_free_object,
+ .gem_vm_ops = &drm_gem_cma_vm_ops,
+ .dumb_create = drm_gem_cma_dumb_create,
+ .dumb_map_offset = drm_gem_cma_dumb_map_offset,
+ .dumb_destroy = drm_gem_dumb_destroy,
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .gem_prime_export = drm_gem_prime_export,
+ .gem_prime_import = drm_gem_prime_import,
+ .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
+ .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
+ .gem_prime_vmap = drm_gem_cma_prime_vmap,
+ .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
+ .gem_prime_mmap = drm_gem_cma_prime_mmap,
+ .fops = &zx_drm_fops,
+ .name = "zx-vou",
+ .desc = "ZTE VOU Controller DRM",
+ .date = "20160811",
+ .major = 1,
+ .minor = 0,
+};
+
+static int zx_drm_bind(struct device *dev)
+{
+ struct drm_device *drm;
+ struct zx_drm_private *priv;
+ int ret;
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ drm = drm_dev_alloc(&zx_drm_driver, dev);
+ if (!drm)
+ return -ENOMEM;
+
+ drm->dev_private = priv;
+ dev_set_drvdata(dev, drm);
+
+ drm_mode_config_init(drm);
+ drm->mode_config.min_width = 16;
+ drm->mode_config.min_height = 16;
+ drm->mode_config.max_width = 4096;
+ drm->mode_config.max_height = 4096;
+ drm->mode_config.funcs = &zx_drm_mode_config_funcs;
+
+ ret = component_bind_all(dev, drm);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to bind all components: %d\n", ret);
+ goto out_unregister;
+ }
+
+ ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
+ if (ret < 0) {
+ DRM_DEV_ERROR(dev, "failed to init vblank: %d\n", ret);
+ goto out_unbind;
+ }
+
+ /*
+ * We will manage irq handler on our own. In this case, irq_enabled
+ * need to be true for using vblank core support.
+ */
+ drm->irq_enabled = true;
+
+ drm_mode_config_reset(drm);
+ drm_kms_helper_poll_init(drm);
+
+ priv->fbdev = drm_fbdev_cma_init(drm, 32, drm->mode_config.num_crtc,
+ drm->mode_config.num_connector);
+ if (IS_ERR(priv->fbdev)) {
+ ret = PTR_ERR(priv->fbdev);
+ DRM_DEV_ERROR(dev, "failed to init cma fbdev: %d\n", ret);
+ priv->fbdev = NULL;
+ goto out_poll_fini;
+ }
+
+ ret = drm_dev_register(drm, 0);
+ if (ret)
+ goto out_fbdev_fini;
+
+ return 0;
+
+out_fbdev_fini:
+ if (priv->fbdev) {
+ drm_fbdev_cma_fini(priv->fbdev);
+ priv->fbdev = NULL;
+ }
+out_poll_fini:
+ drm_kms_helper_poll_fini(drm);
+ drm_mode_config_cleanup(drm);
+ drm_vblank_cleanup(drm);
+out_unbind:
+ component_unbind_all(dev, drm);
+out_unregister:
+ dev_set_drvdata(dev, NULL);
+ drm->dev_private = NULL;
+ drm_dev_unref(drm);
+ return ret;
+}
+
+static void zx_drm_unbind(struct device *dev)
+{
+ struct drm_device *drm = dev_get_drvdata(dev);
+ struct zx_drm_private *priv = drm->dev_private;
+
+ drm_dev_unregister(drm);
+ if (priv->fbdev) {
+ drm_fbdev_cma_fini(priv->fbdev);
+ priv->fbdev = NULL;
+ }
+ drm_kms_helper_poll_fini(drm);
+ drm_mode_config_cleanup(drm);
+ drm_vblank_cleanup(drm);
+ component_unbind_all(dev, drm);
+ dev_set_drvdata(dev, NULL);
+ drm->dev_private = NULL;
+ drm_dev_unref(drm);
+}
+
+static const struct component_master_ops zx_drm_master_ops = {
+ .bind = zx_drm_bind,
+ .unbind = zx_drm_unbind,
+};
+
+static int compare_of(struct device *dev, void *data)
+{
+ return dev->of_node == data;
+}
+
+static int zx_drm_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *parent = dev->of_node;
+ struct device_node *child;
+ struct component_match *match = NULL;
+ int ret;
+
+ ret = of_platform_populate(parent, NULL, NULL, dev);
+ if (ret)
+ return ret;
+
+ for_each_available_child_of_node(parent, child) {
+ component_match_add(dev, &match, compare_of, child);
+ of_node_put(child);
+ }
+
+ return component_master_add_with_match(dev, &zx_drm_master_ops, match);
+}
+
+static int zx_drm_remove(struct platform_device *pdev)
+{
+ component_master_del(&pdev->dev, &zx_drm_master_ops);
+ return 0;
+}
+
+static const struct of_device_id zx_drm_of_match[] = {
+ { .compatible = "zte,zx296718-vou", },
+ { /* end */ },
+};
+MODULE_DEVICE_TABLE(of, zx_drm_of_match);
+
+static struct platform_driver zx_drm_platform_driver = {
+ .probe = zx_drm_probe,
+ .remove = zx_drm_remove,
+ .driver = {
+ .name = "zx-drm",
+ .of_match_table = zx_drm_of_match,
+ },
+};
+
+static struct platform_driver *drivers[] = {
+ &zx_crtc_driver,
+ &zx_hdmi_driver,
+ &zx_drm_platform_driver,
+};
+
+static int zx_drm_init(void)
+{
+ return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
+}
+module_init(zx_drm_init);
+
+static void zx_drm_exit(void)
+{
+ platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
+}
+module_exit(zx_drm_exit);
+
+MODULE_AUTHOR("Shawn Guo <shawn.guo@linaro.org>");
+MODULE_DESCRIPTION("ZTE ZX VOU DRM driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/gpu/drm/zte/zx_drm_drv.h b/drivers/gpu/drm/zte/zx_drm_drv.h
new file mode 100644
index 000000000000..e65cd18a6cba
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_drm_drv.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 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.
+ *
+ */
+
+#ifndef __ZX_DRM_DRV_H__
+#define __ZX_DRM_DRV_H__
+
+extern struct platform_driver zx_crtc_driver;
+extern struct platform_driver zx_hdmi_driver;
+
+static inline u32 zx_readl(void __iomem *reg)
+{
+ return readl_relaxed(reg);
+}
+
+static inline void zx_writel(void __iomem *reg, u32 val)
+{
+ writel_relaxed(val, reg);
+}
+
+static inline void zx_writel_mask(void __iomem *reg, u32 mask, u32 val)
+{
+ u32 tmp;
+
+ tmp = zx_readl(reg);
+ tmp = (tmp & ~mask) | (val & mask);
+ zx_writel(reg, tmp);
+}
+
+#endif /* __ZX_DRM_DRV_H__ */
diff --git a/drivers/gpu/drm/zte/zx_hdmi.c b/drivers/gpu/drm/zte/zx_hdmi.c
new file mode 100644
index 000000000000..6bf6c364811e
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_hdmi.c
@@ -0,0 +1,624 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 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/delay.h>
+#include <linux/err.h>
+#include <linux/hdmi.h>
+#include <linux/irq.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/of_device.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_edid.h>
+#include <drm/drm_of.h>
+#include <drm/drmP.h>
+
+#include "zx_hdmi_regs.h"
+#include "zx_vou.h"
+
+#define ZX_HDMI_INFOFRAME_SIZE 31
+#define DDC_SEGMENT_ADDR 0x30
+
+struct zx_hdmi_i2c {
+ struct i2c_adapter adap;
+ struct mutex lock;
+};
+
+struct zx_hdmi {
+ struct drm_connector connector;
+ struct drm_encoder encoder;
+ struct zx_hdmi_i2c *ddc;
+ struct device *dev;
+ struct drm_device *drm;
+ void __iomem *mmio;
+ struct clk *cec_clk;
+ struct clk *osc_clk;
+ struct clk *xclk;
+ bool sink_is_hdmi;
+ bool sink_has_audio;
+ const struct vou_inf *inf;
+};
+
+#define to_zx_hdmi(x) container_of(x, struct zx_hdmi, x)
+
+static const struct vou_inf vou_inf_hdmi = {
+ .id = VOU_HDMI,
+ .data_sel = VOU_YUV444,
+ .clocks_en_bits = BIT(24) | BIT(18) | BIT(6),
+ .clocks_sel_bits = BIT(13) | BIT(2),
+};
+
+static inline u8 hdmi_readb(struct zx_hdmi *hdmi, u16 offset)
+{
+ return readl_relaxed(hdmi->mmio + offset * 4);
+}
+
+static inline void hdmi_writeb(struct zx_hdmi *hdmi, u16 offset, u8 val)
+{
+ writel_relaxed(val, hdmi->mmio + offset * 4);
+}
+
+static inline void hdmi_writeb_mask(struct zx_hdmi *hdmi, u16 offset,
+ u8 mask, u8 val)
+{
+ u8 tmp;
+
+ tmp = hdmi_readb(hdmi, offset);
+ tmp = (tmp & ~mask) | (val & mask);
+ hdmi_writeb(hdmi, offset, tmp);
+}
+
+static int zx_hdmi_infoframe_trans(struct zx_hdmi *hdmi,
+ union hdmi_infoframe *frame, u8 fsel)
+{
+ u8 buffer[ZX_HDMI_INFOFRAME_SIZE];
+ int num;
+ int i;
+
+ hdmi_writeb(hdmi, TPI_INFO_FSEL, fsel);
+
+ num = hdmi_infoframe_pack(frame, buffer, ZX_HDMI_INFOFRAME_SIZE);
+ if (num < 0) {
+ DRM_DEV_ERROR(hdmi->dev, "failed to pack infoframe: %d\n", num);
+ return num;
+ }
+
+ for (i = 0; i < num; i++)
+ hdmi_writeb(hdmi, TPI_INFO_B0 + i, buffer[i]);
+
+ hdmi_writeb_mask(hdmi, TPI_INFO_EN, TPI_INFO_TRANS_RPT,
+ TPI_INFO_TRANS_RPT);
+ hdmi_writeb_mask(hdmi, TPI_INFO_EN, TPI_INFO_TRANS_EN,
+ TPI_INFO_TRANS_EN);
+
+ return num;
+}
+
+static int zx_hdmi_config_video_vsi(struct zx_hdmi *hdmi,
+ struct drm_display_mode *mode)
+{
+ union hdmi_infoframe frame;
+ int ret;
+
+ ret = drm_hdmi_vendor_infoframe_from_display_mode(&frame.vendor.hdmi,
+ mode);
+ if (ret) {
+ DRM_DEV_ERROR(hdmi->dev, "failed to get vendor infoframe: %d\n",
+ ret);
+ return ret;
+ }
+
+ return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_VSIF);
+}
+
+static int zx_hdmi_config_video_avi(struct zx_hdmi *hdmi,
+ struct drm_display_mode *mode)
+{
+ union hdmi_infoframe frame;
+ int ret;
+
+ ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi, mode);
+ if (ret) {
+ DRM_DEV_ERROR(hdmi->dev, "failed to get avi infoframe: %d\n",
+ ret);
+ return ret;
+ }
+
+ /* We always use YUV444 for HDMI output. */
+ frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
+
+ return zx_hdmi_infoframe_trans(hdmi, &frame, FSEL_AVI);
+}
+
+static void zx_hdmi_encoder_mode_set(struct drm_encoder *encoder,
+ struct drm_display_mode *mode,
+ struct drm_display_mode *adj_mode)
+{
+ struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
+
+ if (hdmi->sink_is_hdmi) {
+ zx_hdmi_config_video_avi(hdmi, mode);
+ zx_hdmi_config_video_vsi(hdmi, mode);
+ }
+}
+
+static void zx_hdmi_phy_start(struct zx_hdmi *hdmi)
+{
+ /* Copy from ZTE BSP code */
+ hdmi_writeb(hdmi, 0x222, 0x0);
+ hdmi_writeb(hdmi, 0x224, 0x4);
+ hdmi_writeb(hdmi, 0x909, 0x0);
+ hdmi_writeb(hdmi, 0x7b0, 0x90);
+ hdmi_writeb(hdmi, 0x7b1, 0x00);
+ hdmi_writeb(hdmi, 0x7b2, 0xa7);
+ hdmi_writeb(hdmi, 0x7b8, 0xaa);
+ hdmi_writeb(hdmi, 0x7b2, 0xa7);
+ hdmi_writeb(hdmi, 0x7b3, 0x0f);
+ hdmi_writeb(hdmi, 0x7b4, 0x0f);
+ hdmi_writeb(hdmi, 0x7b5, 0x55);
+ hdmi_writeb(hdmi, 0x7b7, 0x03);
+ hdmi_writeb(hdmi, 0x7b9, 0x12);
+ hdmi_writeb(hdmi, 0x7ba, 0x32);
+ hdmi_writeb(hdmi, 0x7bc, 0x68);
+ hdmi_writeb(hdmi, 0x7be, 0x40);
+ hdmi_writeb(hdmi, 0x7bf, 0x84);
+ hdmi_writeb(hdmi, 0x7c1, 0x0f);
+ hdmi_writeb(hdmi, 0x7c8, 0x02);
+ hdmi_writeb(hdmi, 0x7c9, 0x03);
+ hdmi_writeb(hdmi, 0x7ca, 0x40);
+ hdmi_writeb(hdmi, 0x7dc, 0x31);
+ hdmi_writeb(hdmi, 0x7e2, 0x04);
+ hdmi_writeb(hdmi, 0x7e0, 0x06);
+ hdmi_writeb(hdmi, 0x7cb, 0x68);
+ hdmi_writeb(hdmi, 0x7f9, 0x02);
+ hdmi_writeb(hdmi, 0x7b6, 0x02);
+ hdmi_writeb(hdmi, 0x7f3, 0x0);
+}
+
+static void zx_hdmi_hw_enable(struct zx_hdmi *hdmi)
+{
+ /* Enable pclk */
+ hdmi_writeb_mask(hdmi, CLKPWD, CLKPWD_PDIDCK, CLKPWD_PDIDCK);
+
+ /* Enable HDMI for TX */
+ hdmi_writeb_mask(hdmi, FUNC_SEL, FUNC_HDMI_EN, FUNC_HDMI_EN);
+
+ /* Enable deep color packet */
+ hdmi_writeb_mask(hdmi, P2T_CTRL, P2T_DC_PKT_EN, P2T_DC_PKT_EN);
+
+ /* Enable HDMI/MHL mode for output */
+ hdmi_writeb_mask(hdmi, TEST_TXCTRL, TEST_TXCTRL_HDMI_MODE,
+ TEST_TXCTRL_HDMI_MODE);
+
+ /* Configure reg_qc_sel */
+ hdmi_writeb(hdmi, HDMICTL4, 0x3);
+
+ /* Enable interrupt */
+ hdmi_writeb_mask(hdmi, INTR1_MASK, INTR1_MONITOR_DETECT,
+ INTR1_MONITOR_DETECT);
+
+ /* Start up phy */
+ zx_hdmi_phy_start(hdmi);
+}
+
+static void zx_hdmi_hw_disable(struct zx_hdmi *hdmi)
+{
+ /* Disable interrupt */
+ hdmi_writeb_mask(hdmi, INTR1_MASK, INTR1_MONITOR_DETECT, 0);
+
+ /* Disable deep color packet */
+ hdmi_writeb_mask(hdmi, P2T_CTRL, P2T_DC_PKT_EN, P2T_DC_PKT_EN);
+
+ /* Disable HDMI for TX */
+ hdmi_writeb_mask(hdmi, FUNC_SEL, FUNC_HDMI_EN, 0);
+
+ /* Disable pclk */
+ hdmi_writeb_mask(hdmi, CLKPWD, CLKPWD_PDIDCK, 0);
+}
+
+static void zx_hdmi_encoder_enable(struct drm_encoder *encoder)
+{
+ struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
+
+ clk_prepare_enable(hdmi->cec_clk);
+ clk_prepare_enable(hdmi->osc_clk);
+ clk_prepare_enable(hdmi->xclk);
+
+ zx_hdmi_hw_enable(hdmi);
+
+ vou_inf_enable(hdmi->inf, encoder->crtc);
+}
+
+static void zx_hdmi_encoder_disable(struct drm_encoder *encoder)
+{
+ struct zx_hdmi *hdmi = to_zx_hdmi(encoder);
+
+ vou_inf_disable(hdmi->inf, encoder->crtc);
+
+ zx_hdmi_hw_disable(hdmi);
+
+ clk_disable_unprepare(hdmi->xclk);
+ clk_disable_unprepare(hdmi->osc_clk);
+ clk_disable_unprepare(hdmi->cec_clk);
+}
+
+static const struct drm_encoder_helper_funcs zx_hdmi_encoder_helper_funcs = {
+ .enable = zx_hdmi_encoder_enable,
+ .disable = zx_hdmi_encoder_disable,
+ .mode_set = zx_hdmi_encoder_mode_set,
+};
+
+static const struct drm_encoder_funcs zx_hdmi_encoder_funcs = {
+ .destroy = drm_encoder_cleanup,
+};
+
+static int zx_hdmi_connector_get_modes(struct drm_connector *connector)
+{
+ struct zx_hdmi *hdmi = to_zx_hdmi(connector);
+ struct edid *edid;
+ int ret;
+
+ edid = drm_get_edid(connector, &hdmi->ddc->adap);
+ if (!edid)
+ return 0;
+
+ hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
+ hdmi->sink_has_audio = drm_detect_monitor_audio(edid);
+ drm_mode_connector_update_edid_property(connector, edid);
+ ret = drm_add_edid_modes(connector, edid);
+ kfree(edid);
+
+ return ret;
+}
+
+static enum drm_mode_status
+zx_hdmi_connector_mode_valid(struct drm_connector *connector,
+ struct drm_display_mode *mode)
+{
+ return MODE_OK;
+}
+
+static struct drm_connector_helper_funcs zx_hdmi_connector_helper_funcs = {
+ .get_modes = zx_hdmi_connector_get_modes,
+ .mode_valid = zx_hdmi_connector_mode_valid,
+};
+
+static enum drm_connector_status
+zx_hdmi_connector_detect(struct drm_connector *connector, bool force)
+{
+ struct zx_hdmi *hdmi = to_zx_hdmi(connector);
+
+ return (hdmi_readb(hdmi, TPI_HPD_RSEN) & TPI_HPD_CONNECTION) ?
+ connector_status_connected : connector_status_disconnected;
+}
+
+static const struct drm_connector_funcs zx_hdmi_connector_funcs = {
+ .dpms = drm_atomic_helper_connector_dpms,
+ .fill_modes = drm_helper_probe_single_connector_modes,
+ .detect = zx_hdmi_connector_detect,
+ .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_hdmi_register(struct drm_device *drm, struct zx_hdmi *hdmi)
+{
+ struct drm_encoder *encoder = &hdmi->encoder;
+
+ encoder->possible_crtcs = VOU_CRTC_MASK;
+
+ drm_encoder_init(drm, encoder, &zx_hdmi_encoder_funcs,
+ DRM_MODE_ENCODER_TMDS, NULL);
+ drm_encoder_helper_add(encoder, &zx_hdmi_encoder_helper_funcs);
+
+ hdmi->connector.polled = DRM_CONNECTOR_POLL_HPD;
+
+ drm_connector_init(drm, &hdmi->connector, &zx_hdmi_connector_funcs,
+ DRM_MODE_CONNECTOR_HDMIA);
+ drm_connector_helper_add(&hdmi->connector,
+ &zx_hdmi_connector_helper_funcs);
+
+ drm_mode_connector_attach_encoder(&hdmi->connector, encoder);
+
+ return 0;
+}
+
+static irqreturn_t zx_hdmi_irq_thread(int irq, void *dev_id)
+{
+ struct zx_hdmi *hdmi = dev_id;
+
+ drm_helper_hpd_irq_event(hdmi->connector.dev);
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t zx_hdmi_irq_handler(int irq, void *dev_id)
+{
+ struct zx_hdmi *hdmi = dev_id;
+ u8 lstat;
+
+ lstat = hdmi_readb(hdmi, L1_INTR_STAT);
+
+ /* Monitor detect/HPD interrupt */
+ if (lstat & L1_INTR_STAT_INTR1) {
+ u8 stat;
+
+ stat = hdmi_readb(hdmi, INTR1_STAT);
+ hdmi_writeb(hdmi, INTR1_STAT, stat);
+
+ if (stat & INTR1_MONITOR_DETECT)
+ return IRQ_WAKE_THREAD;
+ }
+
+ return IRQ_NONE;
+}
+
+static int zx_hdmi_i2c_read(struct zx_hdmi *hdmi, struct i2c_msg *msg)
+{
+ int len = msg->len;
+ u8 *buf = msg->buf;
+ int retry = 0;
+ int ret = 0;
+
+ /* Bits [9:8] of bytes */
+ hdmi_writeb(hdmi, ZX_DDC_DIN_CNT2, (len >> 8) & 0xff);
+ /* Bits [7:0] of bytes */
+ hdmi_writeb(hdmi, ZX_DDC_DIN_CNT1, len & 0xff);
+
+ /* Clear FIFO */
+ hdmi_writeb_mask(hdmi, ZX_DDC_CMD, DDC_CMD_MASK, DDC_CMD_CLEAR_FIFO);
+
+ /* Kick off the read */
+ hdmi_writeb_mask(hdmi, ZX_DDC_CMD, DDC_CMD_MASK,
+ DDC_CMD_SEQUENTIAL_READ);
+
+ while (len > 0) {
+ int cnt, i;
+
+ /* FIFO needs some time to get ready */
+ usleep_range(500, 1000);
+
+ cnt = hdmi_readb(hdmi, ZX_DDC_DOUT_CNT) & DDC_DOUT_CNT_MASK;
+ if (cnt == 0) {
+ if (++retry > 5) {
+ DRM_DEV_ERROR(hdmi->dev,
+ "DDC FIFO read timed out!");
+ return -ETIMEDOUT;
+ }
+ continue;
+ }
+
+ for (i = 0; i < cnt; i++)
+ *buf++ = hdmi_readb(hdmi, ZX_DDC_DATA);
+ len -= cnt;
+ }
+
+ return ret;
+}
+
+static int zx_hdmi_i2c_write(struct zx_hdmi *hdmi, struct i2c_msg *msg)
+{
+ /*
+ * The DDC I2C adapter is only for reading EDID data, so we assume
+ * that the write to this adapter must be the EDID data offset.
+ */
+ if ((msg->len != 1) ||
+ ((msg->addr != DDC_ADDR) && (msg->addr != DDC_SEGMENT_ADDR)))
+ return -EINVAL;
+
+ if (msg->addr == DDC_SEGMENT_ADDR)
+ hdmi_writeb(hdmi, ZX_DDC_SEGM, msg->addr << 1);
+ else if (msg->addr == DDC_ADDR)
+ hdmi_writeb(hdmi, ZX_DDC_ADDR, msg->addr << 1);
+
+ hdmi_writeb(hdmi, ZX_DDC_OFFSET, msg->buf[0]);
+
+ return 0;
+}
+
+static int zx_hdmi_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
+ int num)
+{
+ struct zx_hdmi *hdmi = i2c_get_adapdata(adap);
+ struct zx_hdmi_i2c *ddc = hdmi->ddc;
+ int i, ret = 0;
+
+ mutex_lock(&ddc->lock);
+
+ /* Enable DDC master access */
+ hdmi_writeb_mask(hdmi, TPI_DDC_MASTER_EN, HW_DDC_MASTER, HW_DDC_MASTER);
+
+ for (i = 0; i < num; i++) {
+ DRM_DEV_DEBUG(hdmi->dev,
+ "xfer: num: %d/%d, len: %d, flags: %#x\n",
+ i + 1, num, msgs[i].len, msgs[i].flags);
+
+ if (msgs[i].flags & I2C_M_RD)
+ ret = zx_hdmi_i2c_read(hdmi, &msgs[i]);
+ else
+ ret = zx_hdmi_i2c_write(hdmi, &msgs[i]);
+
+ if (ret < 0)
+ break;
+ }
+
+ if (!ret)
+ ret = num;
+
+ /* Disable DDC master access */
+ hdmi_writeb_mask(hdmi, TPI_DDC_MASTER_EN, HW_DDC_MASTER, 0);
+
+ mutex_unlock(&ddc->lock);
+
+ return ret;
+}
+
+static u32 zx_hdmi_i2c_func(struct i2c_adapter *adapter)
+{
+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
+}
+
+static const struct i2c_algorithm zx_hdmi_algorithm = {
+ .master_xfer = zx_hdmi_i2c_xfer,
+ .functionality = zx_hdmi_i2c_func,
+};
+
+static int zx_hdmi_ddc_register(struct zx_hdmi *hdmi)
+{
+ struct i2c_adapter *adap;
+ struct zx_hdmi_i2c *ddc;
+ int ret;
+
+ ddc = devm_kzalloc(hdmi->dev, sizeof(*ddc), GFP_KERNEL);
+ if (!ddc)
+ return -ENOMEM;
+
+ hdmi->ddc = ddc;
+ mutex_init(&ddc->lock);
+
+ adap = &ddc->adap;
+ adap->owner = THIS_MODULE;
+ adap->class = I2C_CLASS_DDC;
+ adap->dev.parent = hdmi->dev;
+ adap->algo = &zx_hdmi_algorithm;
+ snprintf(adap->name, sizeof(adap->name), "zx hdmi i2c");
+
+ ret = i2c_add_adapter(adap);
+ if (ret) {
+ DRM_DEV_ERROR(hdmi->dev, "failed to add I2C adapter: %d\n",
+ ret);
+ return ret;
+ }
+
+ i2c_set_adapdata(adap, hdmi);
+
+ return 0;
+}
+
+static int zx_hdmi_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_hdmi *hdmi;
+ int irq;
+ int ret;
+
+ hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
+ if (!hdmi)
+ return -ENOMEM;
+
+ hdmi->dev = dev;
+ hdmi->drm = drm;
+ hdmi->inf = &vou_inf_hdmi;
+
+ dev_set_drvdata(dev, hdmi);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ hdmi->mmio = devm_ioremap_resource(dev, res);
+ if (IS_ERR(hdmi->mmio)) {
+ ret = PTR_ERR(hdmi->mmio);
+ DRM_DEV_ERROR(dev, "failed to remap hdmi region: %d\n", ret);
+ return ret;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ hdmi->cec_clk = devm_clk_get(hdmi->dev, "osc_cec");
+ if (IS_ERR(hdmi->cec_clk)) {
+ ret = PTR_ERR(hdmi->cec_clk);
+ DRM_DEV_ERROR(dev, "failed to get cec_clk: %d\n", ret);
+ return ret;
+ }
+
+ hdmi->osc_clk = devm_clk_get(hdmi->dev, "osc_clk");
+ if (IS_ERR(hdmi->osc_clk)) {
+ ret = PTR_ERR(hdmi->osc_clk);
+ DRM_DEV_ERROR(dev, "failed to get osc_clk: %d\n", ret);
+ return ret;
+ }
+
+ hdmi->xclk = devm_clk_get(hdmi->dev, "xclk");
+ if (IS_ERR(hdmi->xclk)) {
+ ret = PTR_ERR(hdmi->xclk);
+ DRM_DEV_ERROR(dev, "failed to get xclk: %d\n", ret);
+ return ret;
+ }
+
+ ret = zx_hdmi_ddc_register(hdmi);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to register ddc: %d\n", ret);
+ return ret;
+ }
+
+ ret = zx_hdmi_register(drm, hdmi);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to register hdmi: %d\n", ret);
+ return ret;
+ }
+
+ ret = devm_request_threaded_irq(dev, irq, zx_hdmi_irq_handler,
+ zx_hdmi_irq_thread, IRQF_SHARED,
+ dev_name(dev), hdmi);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to request threaded irq: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void zx_hdmi_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct zx_hdmi *hdmi = dev_get_drvdata(dev);
+
+ hdmi->connector.funcs->destroy(&hdmi->connector);
+ hdmi->encoder.funcs->destroy(&hdmi->encoder);
+}
+
+static const struct component_ops zx_hdmi_component_ops = {
+ .bind = zx_hdmi_bind,
+ .unbind = zx_hdmi_unbind,
+};
+
+static int zx_hdmi_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &zx_hdmi_component_ops);
+}
+
+static int zx_hdmi_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &zx_hdmi_component_ops);
+ return 0;
+}
+
+static const struct of_device_id zx_hdmi_of_match[] = {
+ { .compatible = "zte,zx296718-hdmi", },
+ { /* end */ },
+};
+MODULE_DEVICE_TABLE(of, zx_hdmi_of_match);
+
+struct platform_driver zx_hdmi_driver = {
+ .probe = zx_hdmi_probe,
+ .remove = zx_hdmi_remove,
+ .driver = {
+ .name = "zx-hdmi",
+ .of_match_table = zx_hdmi_of_match,
+ },
+};
diff --git a/drivers/gpu/drm/zte/zx_hdmi_regs.h b/drivers/gpu/drm/zte/zx_hdmi_regs.h
new file mode 100644
index 000000000000..de911f66b658
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_hdmi_regs.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 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.
+ *
+ */
+
+#ifndef __ZX_HDMI_REGS_H__
+#define __ZX_HDMI_REGS_H__
+
+#define FUNC_SEL 0x000b
+#define FUNC_HDMI_EN BIT(0)
+#define CLKPWD 0x000d
+#define CLKPWD_PDIDCK BIT(2)
+#define P2T_CTRL 0x0066
+#define P2T_DC_PKT_EN BIT(7)
+#define L1_INTR_STAT 0x007e
+#define L1_INTR_STAT_INTR1 BIT(0)
+#define INTR1_STAT 0x008f
+#define INTR1_MASK 0x0095
+#define INTR1_MONITOR_DETECT (BIT(5) | BIT(6))
+#define ZX_DDC_ADDR 0x00ed
+#define ZX_DDC_SEGM 0x00ee
+#define ZX_DDC_OFFSET 0x00ef
+#define ZX_DDC_DIN_CNT1 0x00f0
+#define ZX_DDC_DIN_CNT2 0x00f1
+#define ZX_DDC_CMD 0x00f3
+#define DDC_CMD_MASK 0xf
+#define DDC_CMD_CLEAR_FIFO 0x9
+#define DDC_CMD_SEQUENTIAL_READ 0x2
+#define ZX_DDC_DATA 0x00f4
+#define ZX_DDC_DOUT_CNT 0x00f5
+#define DDC_DOUT_CNT_MASK 0x1f
+#define TEST_TXCTRL 0x00f7
+#define TEST_TXCTRL_HDMI_MODE BIT(1)
+#define HDMICTL4 0x0235
+#define TPI_HPD_RSEN 0x063b
+#define TPI_HPD_CONNECTION (BIT(1) | BIT(2))
+#define TPI_INFO_FSEL 0x06bf
+#define FSEL_AVI 0
+#define FSEL_GBD 1
+#define FSEL_AUDIO 2
+#define FSEL_SPD 3
+#define FSEL_MPEG 4
+#define FSEL_VSIF 5
+#define TPI_INFO_B0 0x06c0
+#define TPI_INFO_EN 0x06df
+#define TPI_INFO_TRANS_EN BIT(7)
+#define TPI_INFO_TRANS_RPT BIT(6)
+#define TPI_DDC_MASTER_EN 0x06f8
+#define HW_DDC_MASTER BIT(7)
+
+#endif /* __ZX_HDMI_REGS_H__ */
diff --git a/drivers/gpu/drm/zte/zx_plane.c b/drivers/gpu/drm/zte/zx_plane.c
new file mode 100644
index 000000000000..70dfea9267dd
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_plane.c
@@ -0,0 +1,299 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 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 <drm/drm_atomic.h>
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_modeset_helper_vtables.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drmP.h>
+
+#include "zx_drm_drv.h"
+#include "zx_plane.h"
+#include "zx_plane_regs.h"
+#include "zx_vou.h"
+
+struct zx_plane {
+ struct drm_plane plane;
+ void __iomem *layer;
+ void __iomem *csc;
+ void __iomem *hbsc;
+ void __iomem *rsz;
+};
+
+#define to_zx_plane(plane) container_of(plane, struct zx_plane, plane)
+
+static const uint32_t gl_formats[] = {
+ DRM_FORMAT_ARGB8888,
+ DRM_FORMAT_XRGB8888,
+ DRM_FORMAT_RGB888,
+ DRM_FORMAT_RGB565,
+ DRM_FORMAT_ARGB1555,
+ DRM_FORMAT_ARGB4444,
+};
+
+static int zx_gl_plane_atomic_check(struct drm_plane *plane,
+ struct drm_plane_state *plane_state)
+{
+ struct drm_framebuffer *fb = plane_state->fb;
+ struct drm_crtc *crtc = plane_state->crtc;
+ struct drm_crtc_state *crtc_state;
+ struct drm_rect clip;
+
+ if (!crtc || !fb)
+ return 0;
+
+ crtc_state = drm_atomic_get_existing_crtc_state(plane_state->state,
+ crtc);
+ if (WARN_ON(!crtc_state))
+ return -EINVAL;
+
+ /* nothing to check when disabling or disabled */
+ if (!crtc_state->enable)
+ return 0;
+
+ /* plane must be enabled */
+ if (!plane_state->crtc)
+ return -EINVAL;
+
+ clip.x1 = 0;
+ clip.y1 = 0;
+ clip.x2 = crtc_state->adjusted_mode.hdisplay;
+ clip.y2 = crtc_state->adjusted_mode.vdisplay;
+
+ return drm_plane_helper_check_state(plane_state, &clip,
+ DRM_PLANE_HELPER_NO_SCALING,
+ DRM_PLANE_HELPER_NO_SCALING,
+ false, true);
+}
+
+static int zx_gl_get_fmt(uint32_t format)
+{
+ switch (format) {
+ case DRM_FORMAT_ARGB8888:
+ case DRM_FORMAT_XRGB8888:
+ return GL_FMT_ARGB8888;
+ case DRM_FORMAT_RGB888:
+ return GL_FMT_RGB888;
+ case DRM_FORMAT_RGB565:
+ return GL_FMT_RGB565;
+ case DRM_FORMAT_ARGB1555:
+ return GL_FMT_ARGB1555;
+ case DRM_FORMAT_ARGB4444:
+ return GL_FMT_ARGB4444;
+ default:
+ WARN_ONCE(1, "invalid pixel format %d\n", format);
+ return -EINVAL;
+ }
+}
+
+static inline void zx_gl_set_update(struct zx_plane *zplane)
+{
+ void __iomem *layer = zplane->layer;
+
+ zx_writel_mask(layer + GL_CTRL0, GL_UPDATE, GL_UPDATE);
+}
+
+static inline void zx_gl_rsz_set_update(struct zx_plane *zplane)
+{
+ zx_writel(zplane->rsz + RSZ_ENABLE_CFG, 1);
+}
+
+void zx_plane_set_update(struct drm_plane *plane)
+{
+ struct zx_plane *zplane = to_zx_plane(plane);
+
+ zx_gl_rsz_set_update(zplane);
+ zx_gl_set_update(zplane);
+}
+
+static void zx_gl_rsz_setup(struct zx_plane *zplane, u32 src_w, u32 src_h,
+ u32 dst_w, u32 dst_h)
+{
+ void __iomem *rsz = zplane->rsz;
+
+ zx_writel(rsz + RSZ_SRC_CFG, RSZ_VER(src_h - 1) | RSZ_HOR(src_w - 1));
+ zx_writel(rsz + RSZ_DEST_CFG, RSZ_VER(dst_h - 1) | RSZ_HOR(dst_w - 1));
+
+ zx_gl_rsz_set_update(zplane);
+}
+
+static void zx_gl_plane_atomic_update(struct drm_plane *plane,
+ struct drm_plane_state *old_state)
+{
+ struct zx_plane *zplane = to_zx_plane(plane);
+ struct drm_framebuffer *fb = plane->state->fb;
+ struct drm_gem_cma_object *cma_obj;
+ void __iomem *layer = zplane->layer;
+ void __iomem *csc = zplane->csc;
+ void __iomem *hbsc = zplane->hbsc;
+ u32 src_x, src_y, src_w, src_h;
+ u32 dst_x, dst_y, dst_w, dst_h;
+ unsigned int depth, bpp;
+ uint32_t format;
+ dma_addr_t paddr;
+ u32 stride;
+ int fmt;
+
+ if (!fb)
+ return;
+
+ format = fb->pixel_format;
+ stride = fb->pitches[0];
+
+ src_x = plane->state->src_x >> 16;
+ src_y = plane->state->src_y >> 16;
+ src_w = plane->state->src_w >> 16;
+ src_h = plane->state->src_h >> 16;
+
+ dst_x = plane->state->crtc_x;
+ dst_y = plane->state->crtc_y;
+ dst_w = plane->state->crtc_w;
+ dst_h = plane->state->crtc_h;
+
+ drm_fb_get_bpp_depth(format, &depth, &bpp);
+
+ cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
+ paddr = cma_obj->paddr + fb->offsets[0];
+ paddr += src_y * stride + src_x * bpp / 8;
+ zx_writel(layer + GL_ADDR, paddr);
+
+ /* Set up source height/width register */
+ zx_writel(layer + GL_SRC_SIZE, GL_SRC_W(src_w) | GL_SRC_H(src_h));
+
+ /* Set up start position register */
+ zx_writel(layer + GL_POS_START, GL_POS_X(dst_x) | GL_POS_Y(dst_y));
+
+ /* Set up end position register */
+ zx_writel(layer + GL_POS_END,
+ GL_POS_X(dst_x + dst_w) | GL_POS_Y(dst_y + dst_h));
+
+ /* Set up stride register */
+ zx_writel(layer + GL_STRIDE, stride & 0xffff);
+
+ /* Set up graphic layer data format */
+ fmt = zx_gl_get_fmt(format);
+ if (fmt >= 0)
+ zx_writel_mask(layer + GL_CTRL1, GL_DATA_FMT_MASK,
+ fmt << GL_DATA_FMT_SHIFT);
+
+ /* Initialize global alpha with a sane value */
+ zx_writel_mask(layer + GL_CTRL2, GL_GLOBAL_ALPHA_MASK,
+ 0xff << GL_GLOBAL_ALPHA_SHIFT);
+
+ /* Setup CSC for the GL */
+ if (dst_h > 720)
+ zx_writel_mask(csc + CSC_CTRL0, CSC_COV_MODE_MASK,
+ CSC_BT709_IMAGE_RGB2YCBCR << CSC_COV_MODE_SHIFT);
+ else
+ zx_writel_mask(csc + CSC_CTRL0, CSC_COV_MODE_MASK,
+ CSC_BT601_IMAGE_RGB2YCBCR << CSC_COV_MODE_SHIFT);
+ zx_writel_mask(csc + CSC_CTRL0, CSC_WORK_ENABLE, CSC_WORK_ENABLE);
+
+ /* Always use scaler since it exists (set for not bypass) */
+ zx_writel_mask(layer + GL_CTRL3, GL_SCALER_BYPASS_MODE,
+ GL_SCALER_BYPASS_MODE);
+
+ zx_gl_rsz_setup(zplane, src_w, src_h, dst_w, dst_h);
+
+ /* Enable HBSC block */
+ zx_writel_mask(hbsc + HBSC_CTRL0, HBSC_CTRL_EN, HBSC_CTRL_EN);
+
+ zx_gl_set_update(zplane);
+}
+
+static const struct drm_plane_helper_funcs zx_gl_plane_helper_funcs = {
+ .atomic_check = zx_gl_plane_atomic_check,
+ .atomic_update = zx_gl_plane_atomic_update,
+};
+
+static void zx_plane_destroy(struct drm_plane *plane)
+{
+ drm_plane_helper_disable(plane);
+ drm_plane_cleanup(plane);
+}
+
+static const struct drm_plane_funcs zx_plane_funcs = {
+ .update_plane = drm_atomic_helper_update_plane,
+ .disable_plane = drm_atomic_helper_disable_plane,
+ .destroy = zx_plane_destroy,
+ .reset = drm_atomic_helper_plane_reset,
+ .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
+};
+
+static void zx_plane_hbsc_init(struct zx_plane *zplane)
+{
+ void __iomem *hbsc = zplane->hbsc;
+
+ /*
+ * Initialize HBSC block with a sane configuration per recommedation
+ * from ZTE BSP code.
+ */
+ zx_writel(hbsc + HBSC_SATURATION, 0x200);
+ zx_writel(hbsc + HBSC_HUE, 0x0);
+ zx_writel(hbsc + HBSC_BRIGHT, 0x0);
+ zx_writel(hbsc + HBSC_CONTRAST, 0x200);
+
+ zx_writel(hbsc + HBSC_THRESHOLD_COL1, (0x3ac << 16) | 0x40);
+ zx_writel(hbsc + HBSC_THRESHOLD_COL2, (0x3c0 << 16) | 0x40);
+ zx_writel(hbsc + HBSC_THRESHOLD_COL3, (0x3c0 << 16) | 0x40);
+}
+
+struct drm_plane *zx_plane_init(struct drm_device *drm, struct device *dev,
+ struct zx_layer_data *data,
+ enum drm_plane_type type)
+{
+ const struct drm_plane_helper_funcs *helper;
+ struct zx_plane *zplane;
+ struct drm_plane *plane;
+ const uint32_t *formats;
+ unsigned int format_count;
+ int ret;
+
+ zplane = devm_kzalloc(dev, sizeof(*zplane), GFP_KERNEL);
+ if (!zplane)
+ return ERR_PTR(-ENOMEM);
+
+ plane = &zplane->plane;
+
+ zplane->layer = data->layer;
+ zplane->hbsc = data->hbsc;
+ zplane->csc = data->csc;
+ zplane->rsz = data->rsz;
+
+ zx_plane_hbsc_init(zplane);
+
+ switch (type) {
+ case DRM_PLANE_TYPE_PRIMARY:
+ helper = &zx_gl_plane_helper_funcs;
+ formats = gl_formats;
+ format_count = ARRAY_SIZE(gl_formats);
+ break;
+ case DRM_PLANE_TYPE_OVERLAY:
+ /* TODO: add video layer (vl) support */
+ break;
+ default:
+ return ERR_PTR(-ENODEV);
+ }
+
+ ret = drm_universal_plane_init(drm, plane, VOU_CRTC_MASK,
+ &zx_plane_funcs, formats, format_count,
+ type, NULL);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to init universal plane: %d\n", ret);
+ return ERR_PTR(ret);
+ }
+
+ drm_plane_helper_add(plane, helper);
+
+ return plane;
+}
diff --git a/drivers/gpu/drm/zte/zx_plane.h b/drivers/gpu/drm/zte/zx_plane.h
new file mode 100644
index 000000000000..2b82cd558d9d
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_plane.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 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.
+ *
+ */
+
+#ifndef __ZX_PLANE_H__
+#define __ZX_PLANE_H__
+
+struct zx_layer_data {
+ void __iomem *layer;
+ void __iomem *csc;
+ void __iomem *hbsc;
+ void __iomem *rsz;
+};
+
+struct drm_plane *zx_plane_init(struct drm_device *drm, struct device *dev,
+ struct zx_layer_data *data,
+ enum drm_plane_type type);
+void zx_plane_set_update(struct drm_plane *plane);
+
+#endif /* __ZX_PLANE_H__ */
diff --git a/drivers/gpu/drm/zte/zx_plane_regs.h b/drivers/gpu/drm/zte/zx_plane_regs.h
new file mode 100644
index 000000000000..3dde6716a558
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_plane_regs.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 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.
+ *
+ */
+
+#ifndef __ZX_PLANE_REGS_H__
+#define __ZX_PLANE_REGS_H__
+
+/* GL registers */
+#define GL_CTRL0 0x00
+#define GL_UPDATE BIT(5)
+#define GL_CTRL1 0x04
+#define GL_DATA_FMT_SHIFT 0
+#define GL_DATA_FMT_MASK (0xf << GL_DATA_FMT_SHIFT)
+#define GL_FMT_ARGB8888 0
+#define GL_FMT_RGB888 1
+#define GL_FMT_RGB565 2
+#define GL_FMT_ARGB1555 3
+#define GL_FMT_ARGB4444 4
+#define GL_CTRL2 0x08
+#define GL_GLOBAL_ALPHA_SHIFT 8
+#define GL_GLOBAL_ALPHA_MASK (0xff << GL_GLOBAL_ALPHA_SHIFT)
+#define GL_CTRL3 0x0c
+#define GL_SCALER_BYPASS_MODE BIT(0)
+#define GL_STRIDE 0x18
+#define GL_ADDR 0x1c
+#define GL_SRC_SIZE 0x38
+#define GL_SRC_W_SHIFT 16
+#define GL_SRC_W_MASK (0x3fff << GL_SRC_W_SHIFT)
+#define GL_SRC_H_SHIFT 0
+#define GL_SRC_H_MASK (0x3fff << GL_SRC_H_SHIFT)
+#define GL_POS_START 0x9c
+#define GL_POS_END 0xa0
+#define GL_POS_X_SHIFT 16
+#define GL_POS_X_MASK (0x1fff << GL_POS_X_SHIFT)
+#define GL_POS_Y_SHIFT 0
+#define GL_POS_Y_MASK (0x1fff << GL_POS_Y_SHIFT)
+
+#define GL_SRC_W(x) (((x) << GL_SRC_W_SHIFT) & GL_SRC_W_MASK)
+#define GL_SRC_H(x) (((x) << GL_SRC_H_SHIFT) & GL_SRC_H_MASK)
+#define GL_POS_X(x) (((x) << GL_POS_X_SHIFT) & GL_POS_X_MASK)
+#define GL_POS_Y(x) (((x) << GL_POS_Y_SHIFT) & GL_POS_Y_MASK)
+
+/* CSC registers */
+#define CSC_CTRL0 0x30
+#define CSC_COV_MODE_SHIFT 16
+#define CSC_COV_MODE_MASK (0xffff << CSC_COV_MODE_SHIFT)
+#define CSC_BT601_IMAGE_RGB2YCBCR 0
+#define CSC_BT601_IMAGE_YCBCR2RGB 1
+#define CSC_BT601_VIDEO_RGB2YCBCR 2
+#define CSC_BT601_VIDEO_YCBCR2RGB 3
+#define CSC_BT709_IMAGE_RGB2YCBCR 4
+#define CSC_BT709_IMAGE_YCBCR2RGB 5
+#define CSC_BT709_VIDEO_RGB2YCBCR 6
+#define CSC_BT709_VIDEO_YCBCR2RGB 7
+#define CSC_BT2020_IMAGE_RGB2YCBCR 8
+#define CSC_BT2020_IMAGE_YCBCR2RGB 9
+#define CSC_BT2020_VIDEO_RGB2YCBCR 10
+#define CSC_BT2020_VIDEO_YCBCR2RGB 11
+#define CSC_WORK_ENABLE BIT(0)
+
+/* RSZ registers */
+#define RSZ_SRC_CFG 0x00
+#define RSZ_DEST_CFG 0x04
+#define RSZ_ENABLE_CFG 0x14
+
+#define RSZ_VER_SHIFT 16
+#define RSZ_VER_MASK (0xffff << RSZ_VER_SHIFT)
+#define RSZ_HOR_SHIFT 0
+#define RSZ_HOR_MASK (0xffff << RSZ_HOR_SHIFT)
+
+#define RSZ_VER(x) (((x) << RSZ_VER_SHIFT) & RSZ_VER_MASK)
+#define RSZ_HOR(x) (((x) << RSZ_HOR_SHIFT) & RSZ_HOR_MASK)
+
+/* HBSC registers */
+#define HBSC_SATURATION 0x00
+#define HBSC_HUE 0x04
+#define HBSC_BRIGHT 0x08
+#define HBSC_CONTRAST 0x0c
+#define HBSC_THRESHOLD_COL1 0x10
+#define HBSC_THRESHOLD_COL2 0x14
+#define HBSC_THRESHOLD_COL3 0x18
+#define HBSC_CTRL0 0x28
+#define HBSC_CTRL_EN BIT(2)
+
+#endif /* __ZX_PLANE_REGS_H__ */
diff --git a/drivers/gpu/drm/zte/zx_vou.c b/drivers/gpu/drm/zte/zx_vou.c
new file mode 100644
index 000000000000..73fe15c17c32
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_vou.c
@@ -0,0 +1,661 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 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/of_address.h>
+#include <video/videomode.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_fb_cma_helper.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_gem_cma_helper.h>
+#include <drm/drm_of.h>
+#include <drm/drm_plane_helper.h>
+#include <drm/drmP.h>
+
+#include "zx_drm_drv.h"
+#include "zx_plane.h"
+#include "zx_vou.h"
+#include "zx_vou_regs.h"
+
+#define GL_NUM 2
+#define VL_NUM 3
+
+enum vou_chn_type {
+ VOU_CHN_MAIN,
+ VOU_CHN_AUX,
+};
+
+struct zx_crtc_regs {
+ u32 fir_active;
+ u32 fir_htiming;
+ u32 fir_vtiming;
+ u32 timing_shift;
+ u32 timing_pi_shift;
+};
+
+static const struct zx_crtc_regs main_crtc_regs = {
+ .fir_active = FIR_MAIN_ACTIVE,
+ .fir_htiming = FIR_MAIN_H_TIMING,
+ .fir_vtiming = FIR_MAIN_V_TIMING,
+ .timing_shift = TIMING_MAIN_SHIFT,
+ .timing_pi_shift = TIMING_MAIN_PI_SHIFT,
+};
+
+static const struct zx_crtc_regs aux_crtc_regs = {
+ .fir_active = FIR_AUX_ACTIVE,
+ .fir_htiming = FIR_AUX_H_TIMING,
+ .fir_vtiming = FIR_AUX_V_TIMING,
+ .timing_shift = TIMING_AUX_SHIFT,
+ .timing_pi_shift = TIMING_AUX_PI_SHIFT,
+};
+
+struct zx_crtc_bits {
+ u32 polarity_mask;
+ u32 polarity_shift;
+ u32 int_frame_mask;
+ u32 tc_enable;
+ u32 gl_enable;
+};
+
+static const struct zx_crtc_bits main_crtc_bits = {
+ .polarity_mask = MAIN_POL_MASK,
+ .polarity_shift = MAIN_POL_SHIFT,
+ .int_frame_mask = TIMING_INT_MAIN_FRAME,
+ .tc_enable = MAIN_TC_EN,
+ .gl_enable = OSD_CTRL0_GL0_EN,
+};
+
+static const struct zx_crtc_bits aux_crtc_bits = {
+ .polarity_mask = AUX_POL_MASK,
+ .polarity_shift = AUX_POL_SHIFT,
+ .int_frame_mask = TIMING_INT_AUX_FRAME,
+ .tc_enable = AUX_TC_EN,
+ .gl_enable = OSD_CTRL0_GL1_EN,
+};
+
+struct zx_crtc {
+ struct drm_crtc crtc;
+ struct drm_plane *primary;
+ struct zx_vou_hw *vou;
+ void __iomem *chnreg;
+ const struct zx_crtc_regs *regs;
+ const struct zx_crtc_bits *bits;
+ enum vou_chn_type chn_type;
+ struct clk *pixclk;
+};
+
+#define to_zx_crtc(x) container_of(x, struct zx_crtc, crtc)
+
+struct zx_vou_hw {
+ struct device *dev;
+ void __iomem *osd;
+ void __iomem *timing;
+ void __iomem *vouctl;
+ void __iomem *otfppu;
+ void __iomem *dtrc;
+ struct clk *axi_clk;
+ struct clk *ppu_clk;
+ struct clk *main_clk;
+ struct clk *aux_clk;
+ struct zx_crtc *main_crtc;
+ struct zx_crtc *aux_crtc;
+};
+
+static inline struct zx_vou_hw *crtc_to_vou(struct drm_crtc *crtc)
+{
+ struct zx_crtc *zcrtc = to_zx_crtc(crtc);
+
+ return zcrtc->vou;
+}
+
+void vou_inf_enable(const struct vou_inf *inf, struct drm_crtc *crtc)
+{
+ struct zx_crtc *zcrtc = to_zx_crtc(crtc);
+ struct zx_vou_hw *vou = zcrtc->vou;
+ bool is_main = zcrtc->chn_type == VOU_CHN_MAIN;
+ u32 data_sel_shift = inf->id << 1;
+
+ /* Select data format */
+ zx_writel_mask(vou->vouctl + VOU_INF_DATA_SEL, 0x3 << data_sel_shift,
+ inf->data_sel << data_sel_shift);
+
+ /* Select channel */
+ zx_writel_mask(vou->vouctl + VOU_INF_CH_SEL, 0x1 << inf->id,
+ zcrtc->chn_type << inf->id);
+
+ /* Select interface clocks */
+ zx_writel_mask(vou->vouctl + VOU_CLK_SEL, inf->clocks_sel_bits,
+ is_main ? 0 : inf->clocks_sel_bits);
+
+ /* Enable interface clocks */
+ zx_writel_mask(vou->vouctl + VOU_CLK_EN, inf->clocks_en_bits,
+ inf->clocks_en_bits);
+
+ /* Enable the device */
+ zx_writel_mask(vou->vouctl + VOU_INF_EN, 1 << inf->id, 1 << inf->id);
+}
+
+void vou_inf_disable(const struct vou_inf *inf, struct drm_crtc *crtc)
+{
+ struct zx_vou_hw *vou = crtc_to_vou(crtc);
+
+ /* Disable the device */
+ zx_writel_mask(vou->vouctl + VOU_INF_EN, 1 << inf->id, 0);
+
+ /* Disable interface clocks */
+ zx_writel_mask(vou->vouctl + VOU_CLK_EN, inf->clocks_en_bits, 0);
+}
+
+static inline void vou_chn_set_update(struct zx_crtc *zcrtc)
+{
+ zx_writel(zcrtc->chnreg + CHN_UPDATE, 1);
+}
+
+static void zx_crtc_enable(struct drm_crtc *crtc)
+{
+ struct drm_display_mode *mode = &crtc->state->adjusted_mode;
+ struct zx_crtc *zcrtc = to_zx_crtc(crtc);
+ struct zx_vou_hw *vou = zcrtc->vou;
+ const struct zx_crtc_regs *regs = zcrtc->regs;
+ const struct zx_crtc_bits *bits = zcrtc->bits;
+ struct videomode vm;
+ u32 pol = 0;
+ u32 val;
+ int ret;
+
+ drm_display_mode_to_videomode(mode, &vm);
+
+ /* Set up timing parameters */
+ val = V_ACTIVE(vm.vactive - 1);
+ val |= H_ACTIVE(vm.hactive - 1);
+ zx_writel(vou->timing + regs->fir_active, val);
+
+ val = SYNC_WIDE(vm.hsync_len - 1);
+ val |= BACK_PORCH(vm.hback_porch - 1);
+ val |= FRONT_PORCH(vm.hfront_porch - 1);
+ zx_writel(vou->timing + regs->fir_htiming, val);
+
+ val = SYNC_WIDE(vm.vsync_len - 1);
+ val |= BACK_PORCH(vm.vback_porch - 1);
+ val |= FRONT_PORCH(vm.vfront_porch - 1);
+ zx_writel(vou->timing + regs->fir_vtiming, val);
+
+ /* Set up polarities */
+ if (vm.flags & DISPLAY_FLAGS_VSYNC_LOW)
+ pol |= 1 << POL_VSYNC_SHIFT;
+ if (vm.flags & DISPLAY_FLAGS_HSYNC_LOW)
+ pol |= 1 << POL_HSYNC_SHIFT;
+
+ zx_writel_mask(vou->timing + TIMING_CTRL, bits->polarity_mask,
+ pol << bits->polarity_shift);
+
+ /* Setup SHIFT register by following what ZTE BSP does */
+ zx_writel(vou->timing + regs->timing_shift, H_SHIFT_VAL);
+ zx_writel(vou->timing + regs->timing_pi_shift, H_PI_SHIFT_VAL);
+
+ /* Enable TIMING_CTRL */
+ zx_writel_mask(vou->timing + TIMING_TC_ENABLE, bits->tc_enable,
+ bits->tc_enable);
+
+ /* Configure channel screen size */
+ zx_writel_mask(zcrtc->chnreg + CHN_CTRL1, CHN_SCREEN_W_MASK,
+ vm.hactive << CHN_SCREEN_W_SHIFT);
+ zx_writel_mask(zcrtc->chnreg + CHN_CTRL1, CHN_SCREEN_H_MASK,
+ vm.vactive << CHN_SCREEN_H_SHIFT);
+
+ /* Update channel */
+ vou_chn_set_update(zcrtc);
+
+ /* Enable channel */
+ zx_writel_mask(zcrtc->chnreg + CHN_CTRL0, CHN_ENABLE, CHN_ENABLE);
+
+ /* Enable Graphic Layer */
+ zx_writel_mask(vou->osd + OSD_CTRL0, bits->gl_enable,
+ bits->gl_enable);
+
+ drm_crtc_vblank_on(crtc);
+
+ ret = clk_set_rate(zcrtc->pixclk, mode->clock * 1000);
+ if (ret) {
+ DRM_DEV_ERROR(vou->dev, "failed to set pixclk rate: %d\n", ret);
+ return;
+ }
+
+ ret = clk_prepare_enable(zcrtc->pixclk);
+ if (ret)
+ DRM_DEV_ERROR(vou->dev, "failed to enable pixclk: %d\n", ret);
+}
+
+static void zx_crtc_disable(struct drm_crtc *crtc)
+{
+ struct zx_crtc *zcrtc = to_zx_crtc(crtc);
+ const struct zx_crtc_bits *bits = zcrtc->bits;
+ struct zx_vou_hw *vou = zcrtc->vou;
+
+ clk_disable_unprepare(zcrtc->pixclk);
+
+ drm_crtc_vblank_off(crtc);
+
+ /* Disable Graphic Layer */
+ zx_writel_mask(vou->osd + OSD_CTRL0, bits->gl_enable, 0);
+
+ /* Disable channel */
+ zx_writel_mask(zcrtc->chnreg + CHN_CTRL0, CHN_ENABLE, 0);
+
+ /* Disable TIMING_CTRL */
+ zx_writel_mask(vou->timing + TIMING_TC_ENABLE, bits->tc_enable, 0);
+}
+
+static void zx_crtc_atomic_flush(struct drm_crtc *crtc,
+ struct drm_crtc_state *old_state)
+{
+ struct drm_pending_vblank_event *event = crtc->state->event;
+
+ if (!event)
+ return;
+
+ crtc->state->event = NULL;
+
+ spin_lock_irq(&crtc->dev->event_lock);
+ if (drm_crtc_vblank_get(crtc) == 0)
+ drm_crtc_arm_vblank_event(crtc, event);
+ else
+ drm_crtc_send_vblank_event(crtc, event);
+ spin_unlock_irq(&crtc->dev->event_lock);
+}
+
+static const struct drm_crtc_helper_funcs zx_crtc_helper_funcs = {
+ .enable = zx_crtc_enable,
+ .disable = zx_crtc_disable,
+ .atomic_flush = zx_crtc_atomic_flush,
+};
+
+static const struct drm_crtc_funcs zx_crtc_funcs = {
+ .destroy = drm_crtc_cleanup,
+ .set_config = drm_atomic_helper_set_config,
+ .page_flip = drm_atomic_helper_page_flip,
+ .reset = drm_atomic_helper_crtc_reset,
+ .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
+ .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+};
+
+static int zx_crtc_init(struct drm_device *drm, struct zx_vou_hw *vou,
+ enum vou_chn_type chn_type)
+{
+ struct device *dev = vou->dev;
+ struct zx_layer_data data;
+ struct zx_crtc *zcrtc;
+ int ret;
+
+ zcrtc = devm_kzalloc(dev, sizeof(*zcrtc), GFP_KERNEL);
+ if (!zcrtc)
+ return -ENOMEM;
+
+ zcrtc->vou = vou;
+ zcrtc->chn_type = chn_type;
+
+ if (chn_type == VOU_CHN_MAIN) {
+ data.layer = vou->osd + MAIN_GL_OFFSET;
+ data.csc = vou->osd + MAIN_CSC_OFFSET;
+ data.hbsc = vou->osd + MAIN_HBSC_OFFSET;
+ data.rsz = vou->otfppu + MAIN_RSZ_OFFSET;
+ zcrtc->chnreg = vou->osd + OSD_MAIN_CHN;
+ zcrtc->regs = &main_crtc_regs;
+ zcrtc->bits = &main_crtc_bits;
+ } else {
+ data.layer = vou->osd + AUX_GL_OFFSET;
+ data.csc = vou->osd + AUX_CSC_OFFSET;
+ data.hbsc = vou->osd + AUX_HBSC_OFFSET;
+ data.rsz = vou->otfppu + AUX_RSZ_OFFSET;
+ zcrtc->chnreg = vou->osd + OSD_AUX_CHN;
+ zcrtc->regs = &aux_crtc_regs;
+ zcrtc->bits = &aux_crtc_bits;
+ }
+
+ zcrtc->pixclk = devm_clk_get(dev, (chn_type == VOU_CHN_MAIN) ?
+ "main_wclk" : "aux_wclk");
+ if (IS_ERR(zcrtc->pixclk)) {
+ ret = PTR_ERR(zcrtc->pixclk);
+ DRM_DEV_ERROR(dev, "failed to get pix clk: %d\n", ret);
+ return ret;
+ }
+
+ zcrtc->primary = zx_plane_init(drm, dev, &data, DRM_PLANE_TYPE_PRIMARY);
+ if (IS_ERR(zcrtc->primary)) {
+ ret = PTR_ERR(zcrtc->primary);
+ DRM_DEV_ERROR(dev, "failed to init primary plane: %d\n", ret);
+ return ret;
+ }
+
+ ret = drm_crtc_init_with_planes(drm, &zcrtc->crtc, zcrtc->primary, NULL,
+ &zx_crtc_funcs, NULL);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to init drm crtc: %d\n", ret);
+ return ret;
+ }
+
+ drm_crtc_helper_add(&zcrtc->crtc, &zx_crtc_helper_funcs);
+
+ if (chn_type == VOU_CHN_MAIN)
+ vou->main_crtc = zcrtc;
+ else
+ vou->aux_crtc = zcrtc;
+
+ return 0;
+}
+
+static inline struct drm_crtc *zx_find_crtc(struct drm_device *drm, int pipe)
+{
+ struct drm_crtc *crtc;
+
+ list_for_each_entry(crtc, &drm->mode_config.crtc_list, head)
+ if (crtc->index == pipe)
+ return crtc;
+
+ return NULL;
+}
+
+int zx_vou_enable_vblank(struct drm_device *drm, unsigned int pipe)
+{
+ struct drm_crtc *crtc;
+ struct zx_crtc *zcrtc;
+ struct zx_vou_hw *vou;
+ u32 int_frame_mask;
+
+ crtc = zx_find_crtc(drm, pipe);
+ if (!crtc)
+ return 0;
+
+ vou = crtc_to_vou(crtc);
+ zcrtc = to_zx_crtc(crtc);
+ int_frame_mask = zcrtc->bits->int_frame_mask;
+
+ zx_writel_mask(vou->timing + TIMING_INT_CTRL, int_frame_mask,
+ int_frame_mask);
+
+ return 0;
+}
+
+void zx_vou_disable_vblank(struct drm_device *drm, unsigned int pipe)
+{
+ struct drm_crtc *crtc;
+ struct zx_crtc *zcrtc;
+ struct zx_vou_hw *vou;
+
+ crtc = zx_find_crtc(drm, pipe);
+ if (!crtc)
+ return;
+
+ vou = crtc_to_vou(crtc);
+ zcrtc = to_zx_crtc(crtc);
+
+ zx_writel_mask(vou->timing + TIMING_INT_CTRL,
+ zcrtc->bits->int_frame_mask, 0);
+}
+
+static irqreturn_t vou_irq_handler(int irq, void *dev_id)
+{
+ struct zx_vou_hw *vou = dev_id;
+ u32 state;
+
+ /* Handle TIMING_CTRL frame interrupts */
+ state = zx_readl(vou->timing + TIMING_INT_STATE);
+ zx_writel(vou->timing + TIMING_INT_STATE, state);
+
+ if (state & TIMING_INT_MAIN_FRAME)
+ drm_crtc_handle_vblank(&vou->main_crtc->crtc);
+
+ if (state & TIMING_INT_AUX_FRAME)
+ drm_crtc_handle_vblank(&vou->aux_crtc->crtc);
+
+ /* Handle OSD interrupts */
+ state = zx_readl(vou->osd + OSD_INT_STA);
+ zx_writel(vou->osd + OSD_INT_CLRSTA, state);
+
+ if (state & OSD_INT_MAIN_UPT) {
+ vou_chn_set_update(vou->main_crtc);
+ zx_plane_set_update(vou->main_crtc->primary);
+ }
+
+ if (state & OSD_INT_AUX_UPT) {
+ vou_chn_set_update(vou->aux_crtc);
+ zx_plane_set_update(vou->aux_crtc->primary);
+ }
+
+ if (state & OSD_INT_ERROR)
+ DRM_DEV_ERROR(vou->dev, "OSD ERROR: 0x%08x!\n", state);
+
+ return IRQ_HANDLED;
+}
+
+static void vou_dtrc_init(struct zx_vou_hw *vou)
+{
+ /* Clear bit for bypass by ID */
+ zx_writel_mask(vou->dtrc + DTRC_DETILE_CTRL,
+ TILE2RASTESCAN_BYPASS_MODE, 0);
+
+ /* Select ARIDR mode */
+ zx_writel_mask(vou->dtrc + DTRC_DETILE_CTRL, DETILE_ARIDR_MODE_MASK,
+ DETILE_ARID_IN_ARIDR);
+
+ /* Bypass decompression for both frames */
+ zx_writel_mask(vou->dtrc + DTRC_F0_CTRL, DTRC_DECOMPRESS_BYPASS,
+ DTRC_DECOMPRESS_BYPASS);
+ zx_writel_mask(vou->dtrc + DTRC_F1_CTRL, DTRC_DECOMPRESS_BYPASS,
+ DTRC_DECOMPRESS_BYPASS);
+
+ /* Set up ARID register */
+ zx_writel(vou->dtrc + DTRC_ARID, DTRC_ARID3(0xf) | DTRC_ARID2(0xe) |
+ DTRC_ARID1(0xf) | DTRC_ARID0(0xe));
+}
+
+static void vou_hw_init(struct zx_vou_hw *vou)
+{
+ /* Set GL0 to main channel and GL1 to aux channel */
+ zx_writel_mask(vou->osd + OSD_CTRL0, OSD_CTRL0_GL0_SEL, 0);
+ zx_writel_mask(vou->osd + OSD_CTRL0, OSD_CTRL0_GL1_SEL,
+ OSD_CTRL0_GL1_SEL);
+
+ /* Release reset for all VOU modules */
+ zx_writel(vou->vouctl + VOU_SOFT_RST, ~0);
+
+ /* Select main clock for GL0 and aux clock for GL1 module */
+ zx_writel_mask(vou->vouctl + VOU_CLK_SEL, VOU_CLK_GL0_SEL, 0);
+ zx_writel_mask(vou->vouctl + VOU_CLK_SEL, VOU_CLK_GL1_SEL,
+ VOU_CLK_GL1_SEL);
+
+ /* Enable clock auto-gating for all VOU modules */
+ zx_writel(vou->vouctl + VOU_CLK_REQEN, ~0);
+
+ /* Enable all VOU module clocks */
+ zx_writel(vou->vouctl + VOU_CLK_EN, ~0);
+
+ /* Clear both OSD and TIMING_CTRL interrupt state */
+ zx_writel(vou->osd + OSD_INT_CLRSTA, ~0);
+ zx_writel(vou->timing + TIMING_INT_STATE, ~0);
+
+ /* Enable OSD and TIMING_CTRL interrrupts */
+ zx_writel(vou->osd + OSD_INT_MSK, OSD_INT_ENABLE);
+ zx_writel(vou->timing + TIMING_INT_CTRL, TIMING_INT_ENABLE);
+
+ /* Select GPC as input to gl/vl scaler as a sane default setting */
+ zx_writel(vou->otfppu + OTFPPU_RSZ_DATA_SOURCE, 0x2a);
+
+ /*
+ * Needs to reset channel and layer logic per frame when frame starts
+ * to get VOU work properly.
+ */
+ zx_writel_mask(vou->osd + OSD_RST_CLR, RST_PER_FRAME, RST_PER_FRAME);
+
+ vou_dtrc_init(vou);
+}
+
+static int zx_crtc_bind(struct device *dev, struct device *master, void *data)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct drm_device *drm = data;
+ struct zx_vou_hw *vou;
+ struct resource *res;
+ int irq;
+ int ret;
+
+ vou = devm_kzalloc(dev, sizeof(*vou), GFP_KERNEL);
+ if (!vou)
+ return -ENOMEM;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "osd");
+ vou->osd = devm_ioremap_resource(dev, res);
+ if (IS_ERR(vou->osd)) {
+ ret = PTR_ERR(vou->osd);
+ DRM_DEV_ERROR(dev, "failed to remap osd region: %d\n", ret);
+ return ret;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "timing_ctrl");
+ vou->timing = devm_ioremap_resource(dev, res);
+ if (IS_ERR(vou->timing)) {
+ ret = PTR_ERR(vou->timing);
+ DRM_DEV_ERROR(dev, "failed to remap timing_ctrl region: %d\n",
+ ret);
+ return ret;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dtrc");
+ vou->dtrc = devm_ioremap_resource(dev, res);
+ if (IS_ERR(vou->dtrc)) {
+ ret = PTR_ERR(vou->dtrc);
+ DRM_DEV_ERROR(dev, "failed to remap dtrc region: %d\n", ret);
+ return ret;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vou_ctrl");
+ vou->vouctl = devm_ioremap_resource(dev, res);
+ if (IS_ERR(vou->vouctl)) {
+ ret = PTR_ERR(vou->vouctl);
+ DRM_DEV_ERROR(dev, "failed to remap vou_ctrl region: %d\n",
+ ret);
+ return ret;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "otfppu");
+ vou->otfppu = devm_ioremap_resource(dev, res);
+ if (IS_ERR(vou->otfppu)) {
+ ret = PTR_ERR(vou->otfppu);
+ DRM_DEV_ERROR(dev, "failed to remap otfppu region: %d\n", ret);
+ return ret;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return irq;
+
+ vou->axi_clk = devm_clk_get(dev, "aclk");
+ if (IS_ERR(vou->axi_clk)) {
+ ret = PTR_ERR(vou->axi_clk);
+ DRM_DEV_ERROR(dev, "failed to get axi_clk: %d\n", ret);
+ return ret;
+ }
+
+ vou->ppu_clk = devm_clk_get(dev, "ppu_wclk");
+ if (IS_ERR(vou->ppu_clk)) {
+ ret = PTR_ERR(vou->ppu_clk);
+ DRM_DEV_ERROR(dev, "failed to get ppu_clk: %d\n", ret);
+ return ret;
+ }
+
+ ret = clk_prepare_enable(vou->axi_clk);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to enable axi_clk: %d\n", ret);
+ return ret;
+ }
+
+ clk_prepare_enable(vou->ppu_clk);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to enable ppu_clk: %d\n", ret);
+ goto disable_axi_clk;
+ }
+
+ vou->dev = dev;
+ dev_set_drvdata(dev, vou);
+
+ vou_hw_init(vou);
+
+ ret = devm_request_irq(dev, irq, vou_irq_handler, 0, "zx_vou", vou);
+ if (ret < 0) {
+ DRM_DEV_ERROR(dev, "failed to request vou irq: %d\n", ret);
+ goto disable_ppu_clk;
+ }
+
+ ret = zx_crtc_init(drm, vou, VOU_CHN_MAIN);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to init main channel crtc: %d\n",
+ ret);
+ goto disable_ppu_clk;
+ }
+
+ ret = zx_crtc_init(drm, vou, VOU_CHN_AUX);
+ if (ret) {
+ DRM_DEV_ERROR(dev, "failed to init aux channel crtc: %d\n",
+ ret);
+ goto disable_ppu_clk;
+ }
+
+ return 0;
+
+disable_ppu_clk:
+ clk_disable_unprepare(vou->ppu_clk);
+disable_axi_clk:
+ clk_disable_unprepare(vou->axi_clk);
+ return ret;
+}
+
+static void zx_crtc_unbind(struct device *dev, struct device *master,
+ void *data)
+{
+ struct zx_vou_hw *vou = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(vou->axi_clk);
+ clk_disable_unprepare(vou->ppu_clk);
+}
+
+static const struct component_ops zx_crtc_component_ops = {
+ .bind = zx_crtc_bind,
+ .unbind = zx_crtc_unbind,
+};
+
+static int zx_crtc_probe(struct platform_device *pdev)
+{
+ return component_add(&pdev->dev, &zx_crtc_component_ops);
+}
+
+static int zx_crtc_remove(struct platform_device *pdev)
+{
+ component_del(&pdev->dev, &zx_crtc_component_ops);
+ return 0;
+}
+
+static const struct of_device_id zx_crtc_of_match[] = {
+ { .compatible = "zte,zx296718-dpc", },
+ { /* end */ },
+};
+MODULE_DEVICE_TABLE(of, zx_crtc_of_match);
+
+struct platform_driver zx_crtc_driver = {
+ .probe = zx_crtc_probe,
+ .remove = zx_crtc_remove,
+ .driver = {
+ .name = "zx-crtc",
+ .of_match_table = zx_crtc_of_match,
+ },
+};
diff --git a/drivers/gpu/drm/zte/zx_vou.h b/drivers/gpu/drm/zte/zx_vou.h
new file mode 100644
index 000000000000..349e06cd86f4
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_vou.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 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.
+ *
+ */
+
+#ifndef __ZX_VOU_H__
+#define __ZX_VOU_H__
+
+#define VOU_CRTC_MASK 0x3
+
+/* VOU output interfaces */
+enum vou_inf_id {
+ VOU_HDMI = 0,
+ VOU_RGB_LCD = 1,
+ VOU_TV_ENC = 2,
+ VOU_MIPI_DSI = 3,
+ VOU_LVDS = 4,
+ VOU_VGA = 5,
+};
+
+enum vou_inf_data_sel {
+ VOU_YUV444 = 0,
+ VOU_RGB_101010 = 1,
+ VOU_RGB_888 = 2,
+ VOU_RGB_666 = 3,
+};
+
+struct vou_inf {
+ enum vou_inf_id id;
+ enum vou_inf_data_sel data_sel;
+ u32 clocks_en_bits;
+ u32 clocks_sel_bits;
+};
+
+void vou_inf_enable(const struct vou_inf *inf, struct drm_crtc *crtc);
+void vou_inf_disable(const struct vou_inf *inf, struct drm_crtc *crtc);
+
+int zx_vou_enable_vblank(struct drm_device *drm, unsigned int pipe);
+void zx_vou_disable_vblank(struct drm_device *drm, unsigned int pipe);
+
+#endif /* __ZX_VOU_H__ */
diff --git a/drivers/gpu/drm/zte/zx_vou_regs.h b/drivers/gpu/drm/zte/zx_vou_regs.h
new file mode 100644
index 000000000000..f44e7a4ae441
--- /dev/null
+++ b/drivers/gpu/drm/zte/zx_vou_regs.h
@@ -0,0 +1,157 @@
+/*
+ * Copyright 2016 Linaro Ltd.
+ * Copyright 2016 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.
+ *
+ */
+
+#ifndef __ZX_VOU_REGS_H__
+#define __ZX_VOU_REGS_H__
+
+/* Sub-module offset */
+#define MAIN_GL_OFFSET 0x130
+#define MAIN_CSC_OFFSET 0x580
+#define MAIN_HBSC_OFFSET 0x820
+#define MAIN_RSZ_OFFSET 0x600 /* OTFPPU sub-module */
+
+#define AUX_GL_OFFSET 0x200
+#define AUX_CSC_OFFSET 0x5d0
+#define AUX_HBSC_OFFSET 0x860
+#define AUX_RSZ_OFFSET 0x800
+
+/* OSD (GPC_GLOBAL) registers */
+#define OSD_INT_STA 0x04
+#define OSD_INT_CLRSTA 0x08
+#define OSD_INT_MSK 0x0c
+#define OSD_INT_AUX_UPT BIT(14)
+#define OSD_INT_MAIN_UPT BIT(13)
+#define OSD_INT_GL1_LBW BIT(10)
+#define OSD_INT_GL0_LBW BIT(9)
+#define OSD_INT_VL2_LBW BIT(8)
+#define OSD_INT_VL1_LBW BIT(7)
+#define OSD_INT_VL0_LBW BIT(6)
+#define OSD_INT_BUS_ERR BIT(3)
+#define OSD_INT_CFG_ERR BIT(2)
+#define OSD_INT_ERROR (\
+ OSD_INT_GL1_LBW | OSD_INT_GL0_LBW | \
+ OSD_INT_VL2_LBW | OSD_INT_VL1_LBW | OSD_INT_VL0_LBW | \
+ OSD_INT_BUS_ERR | OSD_INT_CFG_ERR \
+)
+#define OSD_INT_ENABLE (OSD_INT_ERROR | OSD_INT_AUX_UPT | OSD_INT_MAIN_UPT)
+#define OSD_CTRL0 0x10
+#define OSD_CTRL0_GL0_EN BIT(7)
+#define OSD_CTRL0_GL0_SEL BIT(6)
+#define OSD_CTRL0_GL1_EN BIT(5)
+#define OSD_CTRL0_GL1_SEL BIT(4)
+#define OSD_RST_CLR 0x1c
+#define RST_PER_FRAME BIT(19)
+
+/* Main/Aux channel registers */
+#define OSD_MAIN_CHN 0x470
+#define OSD_AUX_CHN 0x4d0
+#define CHN_CTRL0 0x00
+#define CHN_ENABLE BIT(0)
+#define CHN_CTRL1 0x04
+#define CHN_SCREEN_W_SHIFT 18
+#define CHN_SCREEN_W_MASK (0x1fff << CHN_SCREEN_W_SHIFT)
+#define CHN_SCREEN_H_SHIFT 5
+#define CHN_SCREEN_H_MASK (0x1fff << CHN_SCREEN_H_SHIFT)
+#define CHN_UPDATE 0x08
+
+/* TIMING_CTRL registers */
+#define TIMING_TC_ENABLE 0x04
+#define AUX_TC_EN BIT(1)
+#define MAIN_TC_EN BIT(0)
+#define FIR_MAIN_ACTIVE 0x08
+#define FIR_AUX_ACTIVE 0x0c
+#define V_ACTIVE_SHIFT 16
+#define V_ACTIVE_MASK (0xffff << V_ACTIVE_SHIFT)
+#define H_ACTIVE_SHIFT 0
+#define H_ACTIVE_MASK (0xffff << H_ACTIVE_SHIFT)
+#define FIR_MAIN_H_TIMING 0x10
+#define FIR_MAIN_V_TIMING 0x14
+#define FIR_AUX_H_TIMING 0x18
+#define FIR_AUX_V_TIMING 0x1c
+#define SYNC_WIDE_SHIFT 22
+#define SYNC_WIDE_MASK (0x3ff << SYNC_WIDE_SHIFT)
+#define BACK_PORCH_SHIFT 11
+#define BACK_PORCH_MASK (0x7ff << BACK_PORCH_SHIFT)
+#define FRONT_PORCH_SHIFT 0
+#define FRONT_PORCH_MASK (0x7ff << FRONT_PORCH_SHIFT)
+#define TIMING_CTRL 0x20
+#define AUX_POL_SHIFT 3
+#define AUX_POL_MASK (0x7 << AUX_POL_SHIFT)
+#define MAIN_POL_SHIFT 0
+#define MAIN_POL_MASK (0x7 << MAIN_POL_SHIFT)
+#define POL_DE_SHIFT 2
+#define POL_VSYNC_SHIFT 1
+#define POL_HSYNC_SHIFT 0
+#define TIMING_INT_CTRL 0x24
+#define TIMING_INT_STATE 0x28
+#define TIMING_INT_AUX_FRAME BIT(3)
+#define TIMING_INT_MAIN_FRAME BIT(1)
+#define TIMING_INT_AUX_FRAME_SEL_VSW (0x2 << 10)
+#define TIMING_INT_MAIN_FRAME_SEL_VSW (0x2 << 6)
+#define TIMING_INT_ENABLE (\
+ TIMING_INT_MAIN_FRAME_SEL_VSW | TIMING_INT_AUX_FRAME_SEL_VSW | \
+ TIMING_INT_MAIN_FRAME | TIMING_INT_AUX_FRAME \
+)
+#define TIMING_MAIN_SHIFT 0x2c
+#define TIMING_AUX_SHIFT 0x30
+#define H_SHIFT_VAL 0x0048
+#define TIMING_MAIN_PI_SHIFT 0x68
+#define TIMING_AUX_PI_SHIFT 0x6c
+#define H_PI_SHIFT_VAL 0x000f
+
+#define V_ACTIVE(x) (((x) << V_ACTIVE_SHIFT) & V_ACTIVE_MASK)
+#define H_ACTIVE(x) (((x) << H_ACTIVE_SHIFT) & H_ACTIVE_MASK)
+
+#define SYNC_WIDE(x) (((x) << SYNC_WIDE_SHIFT) & SYNC_WIDE_MASK)
+#define BACK_PORCH(x) (((x) << BACK_PORCH_SHIFT) & BACK_PORCH_MASK)
+#define FRONT_PORCH(x) (((x) << FRONT_PORCH_SHIFT) & FRONT_PORCH_MASK)
+
+/* DTRC registers */
+#define DTRC_F0_CTRL 0x2c
+#define DTRC_F1_CTRL 0x5c
+#define DTRC_DECOMPRESS_BYPASS BIT(17)
+#define DTRC_DETILE_CTRL 0x68
+#define TILE2RASTESCAN_BYPASS_MODE BIT(30)
+#define DETILE_ARIDR_MODE_MASK (0x3 << 0)
+#define DETILE_ARID_ALL 0
+#define DETILE_ARID_IN_ARIDR 1
+#define DETILE_ARID_BYP_BUT_ARIDR 2
+#define DETILE_ARID_IN_ARIDR2 3
+#define DTRC_ARID 0x6c
+#define DTRC_ARID3_SHIFT 24
+#define DTRC_ARID3_MASK (0xff << DTRC_ARID3_SHIFT)
+#define DTRC_ARID2_SHIFT 16
+#define DTRC_ARID2_MASK (0xff << DTRC_ARID2_SHIFT)
+#define DTRC_ARID1_SHIFT 8
+#define DTRC_ARID1_MASK (0xff << DTRC_ARID1_SHIFT)
+#define DTRC_ARID0_SHIFT 0
+#define DTRC_ARID0_MASK (0xff << DTRC_ARID0_SHIFT)
+#define DTRC_DEC2DDR_ARID 0x70
+
+#define DTRC_ARID3(x) (((x) << DTRC_ARID3_SHIFT) & DTRC_ARID3_MASK)
+#define DTRC_ARID2(x) (((x) << DTRC_ARID2_SHIFT) & DTRC_ARID2_MASK)
+#define DTRC_ARID1(x) (((x) << DTRC_ARID1_SHIFT) & DTRC_ARID1_MASK)
+#define DTRC_ARID0(x) (((x) << DTRC_ARID0_SHIFT) & DTRC_ARID0_MASK)
+
+/* VOU_CTRL registers */
+#define VOU_INF_EN 0x00
+#define VOU_INF_CH_SEL 0x04
+#define VOU_INF_DATA_SEL 0x08
+#define VOU_SOFT_RST 0x14
+#define VOU_CLK_SEL 0x18
+#define VOU_CLK_GL1_SEL BIT(5)
+#define VOU_CLK_GL0_SEL BIT(4)
+#define VOU_CLK_REQEN 0x20
+#define VOU_CLK_EN 0x24
+
+/* OTFPPU_CTRL registers */
+#define OTFPPU_RSZ_DATA_SOURCE 0x04
+
+#endif /* __ZX_VOU_REGS_H__ */
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 13:02:45 +0300