--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd.
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/iommu.h>
+#include <linux/of_graph.h>
+#include <linux/of_reserved_mem.h>
+#include <linux/pm_runtime.h>
+#include <linux/reset.h>
+#include <linux/version.h>
+
+#include <drm/drm_aperture.h>
+#include <drm/drm_crtc.h>
+#include <drm/drm_crtc_helper.h>
+#include <drm/drm_debugfs.h>
+#include <drm/drm_drv.h>
+#include <drm/drm_fb_helper.h>
+#include <drm/drm_fbdev_generic.h>
+#include <drm/drm_file.h>
+#include <drm/drm_fourcc.h>
+#include <drm/drm_ioctl.h>
+#include <drm/drm_of.h>
+#include <drm/drm_prime.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_vblank.h>
+
+#include "vs_drv.h"
+
+#define DRV_NAME "starfive"
+#define DRV_DESC "Starfive DRM driver"
+#define DRV_DATE "202305161"
+#define DRV_MAJOR 1
+#define DRV_MINOR 0
+
+static struct platform_driver vs_drm_platform_driver;
+
+static const struct file_operations fops = {
+ .owner = THIS_MODULE,
+ .open = drm_open,
+ .release = drm_release,
+ .unlocked_ioctl = drm_ioctl,
+ .compat_ioctl = drm_compat_ioctl,
+ .poll = drm_poll,
+ .read = drm_read,
+};
+
+static struct drm_driver vs_drm_driver = {
+ .driver_features = DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_GEM,
+ .lastclose = drm_fb_helper_lastclose,
+ .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
+ .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
+ .fops = &fops,
+ .name = DRV_NAME,
+ .desc = DRV_DESC,
+ .date = DRV_DATE,
+ .major = DRV_MAJOR,
+ .minor = DRV_MINOR,
+};
+
+void vs_drm_update_pitch_alignment(struct drm_device *drm_dev,
+ unsigned int alignment)
+{
+ struct vs_drm_private *priv = drm_dev->dev_private;
+
+ if (alignment > priv->pitch_alignment)
+ priv->pitch_alignment = alignment;
+}
+
+static int vs_drm_bind(struct device *dev)
+{
+ struct drm_device *drm_dev;
+ struct vs_drm_private *priv;
+ int ret;
+ static u64 dma_mask = DMA_BIT_MASK(40);
+
+ /* Remove existing drivers that may own the framebuffer memory. */
+ ret = drm_aperture_remove_framebuffers(false, &vs_drm_driver);
+ if (ret) {
+ DRM_DEV_ERROR(dev,
+ "Failed to remove existing framebuffers - %d.\n",
+ ret);
+ return ret;
+ }
+
+ drm_dev = drm_dev_alloc(&vs_drm_driver, dev);
+ if (IS_ERR(drm_dev))
+ return PTR_ERR(drm_dev);
+
+ dev_set_drvdata(dev, drm_dev);
+
+ priv = devm_kzalloc(drm_dev->dev, sizeof(struct vs_drm_private),
+ GFP_KERNEL);
+ if (!priv) {
+ ret = -ENOMEM;
+ goto err_put_dev;
+ }
+
+ priv->pitch_alignment = 64;
+ priv->dma_dev = drm_dev->dev;
+ priv->dma_dev->coherent_dma_mask = dma_mask;
+ drm_dev->dev_private = priv;
+
+ drm_mode_config_init(drm_dev);
+
+ /* Now try and bind all our sub-components */
+ ret = component_bind_all(dev, drm_dev);
+ if (ret)
+ goto err_mode;
+
+ ret = drm_vblank_init(drm_dev, drm_dev->mode_config.num_crtc);
+ if (ret)
+ goto err_bind;
+
+ drm_mode_config_reset(drm_dev);
+
+ drm_kms_helper_poll_init(drm_dev);
+
+ ret = drm_dev_register(drm_dev, 0);
+ if (ret)
+ goto err_helper;
+
+ drm_fbdev_generic_setup(drm_dev, 32);
+
+ return 0;
+
+err_helper:
+ drm_kms_helper_poll_fini(drm_dev);
+err_bind:
+ component_unbind_all(drm_dev->dev, drm_dev);
+err_mode:
+ drm_mode_config_cleanup(drm_dev);
+ if (priv->domain)
+ iommu_domain_free(priv->domain);
+err_put_dev:
+ drm_dev->dev_private = NULL;
+ dev_set_drvdata(dev, NULL);
+ drm_dev_put(drm_dev);
+ return ret;
+}
+
+static void vs_drm_unbind(struct device *dev)
+{
+ struct drm_device *drm_dev = dev_get_drvdata(dev);
+ struct vs_drm_private *priv = drm_dev->dev_private;
+
+ drm_dev_unregister(drm_dev);
+
+ drm_kms_helper_poll_fini(drm_dev);
+
+ component_unbind_all(drm_dev->dev, drm_dev);
+
+ drm_mode_config_cleanup(drm_dev);
+
+ if (priv->domain) {
+ iommu_domain_free(priv->domain);
+ priv->domain = NULL;
+ }
+
+ drm_dev->dev_private = NULL;
+ dev_set_drvdata(dev, NULL);
+ drm_dev_put(drm_dev);
+}
+
+static const struct component_master_ops vs_drm_ops = {
+ .bind = vs_drm_bind,
+ .unbind = vs_drm_unbind,
+};
+
+static struct platform_driver *drm_sub_drivers[] = {
+};
+
+#define NUM_DRM_DRIVERS \
+ (sizeof(drm_sub_drivers) / sizeof(struct platform_driver *))
+
+static int compare_dev(struct device *dev, void *data)
+{
+ return dev == (struct device *)data;
+}
+
+static struct component_match *vs_drm_match_add(struct device *dev)
+{
+ struct component_match *match = NULL;
+ int i;
+
+ for (i = 0; i < NUM_DRM_DRIVERS; ++i) {
+ struct platform_driver *drv = drm_sub_drivers[i];
+ struct device *p = NULL, *d;
+
+ while ((d = platform_find_device_by_driver(p, &drv->driver))) {
+ put_device(p);
+
+ component_match_add(dev, &match, compare_dev, d);
+ p = d;
+ }
+ put_device(p);
+ }
+
+ return match ?: ERR_PTR(-ENODEV);
+}
+
+static int vs_drm_platform_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct component_match *match;
+
+ match = vs_drm_match_add(dev);
+ if (IS_ERR(match))
+ return PTR_ERR(match);
+
+ return component_master_add_with_match(dev, &vs_drm_ops, match);
+}
+
+static int vs_drm_platform_remove(struct platform_device *pdev)
+{
+ component_master_del(&pdev->dev, &vs_drm_ops);
+ return 0;
+}
+
+#ifdef CONFIG_PM_SLEEP
+static int vs_drm_suspend(struct device *dev)
+{
+ struct drm_device *drm = dev_get_drvdata(dev);
+
+ return drm_mode_config_helper_suspend(drm);
+}
+
+static int vs_drm_resume(struct device *dev)
+{
+ struct drm_device *drm = dev_get_drvdata(dev);
+
+ return drm_mode_config_helper_resume(drm);
+}
+#endif
+
+static SIMPLE_DEV_PM_OPS(vs_drm_pm_ops, vs_drm_suspend, vs_drm_resume);
+
+static const struct of_device_id vs_drm_dt_ids[] = {
+ { .compatible = "verisilicon,display-subsystem", },
+};
+
+MODULE_DEVICE_TABLE(of, vs_drm_dt_ids);
+
+static struct platform_driver vs_drm_platform_driver = {
+ .probe = vs_drm_platform_probe,
+ .remove = vs_drm_platform_remove,
+
+ .driver = {
+ .name = DRV_NAME,
+ .of_match_table = vs_drm_dt_ids,
+ .pm = &vs_drm_pm_ops,
+ },
+};
+
+static int __init vs_drm_init(void)
+{
+ int ret;
+
+ ret = platform_register_drivers(drm_sub_drivers, NUM_DRM_DRIVERS);
+ if (ret)
+ return ret;
+
+ ret = platform_driver_register(&vs_drm_platform_driver);
+ if (ret)
+ platform_unregister_drivers(drm_sub_drivers, NUM_DRM_DRIVERS);
+
+ return ret;
+}
+
+static void __exit vs_drm_fini(void)
+{
+ platform_driver_unregister(&vs_drm_platform_driver);
+ platform_unregister_drivers(drm_sub_drivers, NUM_DRM_DRIVERS);
+}
+
+module_init(vs_drm_init);
+module_exit(vs_drm_fini);
+
+MODULE_DESCRIPTION("VeriSilicon DRM Driver");
+MODULE_LICENSE("GPL");
#define DRM_FORMAT_MOD_VENDOR_ARM 0x08
#define DRM_FORMAT_MOD_VENDOR_ALLWINNER 0x09
#define DRM_FORMAT_MOD_VENDOR_AMLOGIC 0x0a
+#define DRM_FORMAT_MOD_VENDOR_VS 0x0b
/* add more to the end as needed */
#define AMD_FMT_MOD_CLEAR(field) \
(~((__u64)AMD_FMT_MOD_##field##_MASK << AMD_FMT_MOD_##field##_SHIFT))
+#define DRM_FORMAT_MOD_VS_TYPE_NORMAL 0x00
+#define DRM_FORMAT_MOD_VS_TYPE_COMPRESSED 0x01
+#define DRM_FORMAT_MOD_VS_TYPE_CUSTOM_10BIT 0x02
+#define DRM_FORMAT_MOD_VS_TYPE_MASK ((__u64)0x3 << 54)
+
+#define fourcc_mod_vs_code(type, val) \
+ fourcc_mod_code(VS, ((((__u64)type) << 54) | (val)))
+
+#define DRM_FORMAT_MOD_VS_DEC_TILE_MODE_MASK 0x3F
+#define DRM_FORMAT_MOD_VS_DEC_TILE_8X8_XMAJOR 0x00
+#define DRM_FORMAT_MOD_VS_DEC_TILE_8X8_YMAJOR 0x01
+#define DRM_FORMAT_MOD_VS_DEC_TILE_16X4 0x02
+#define DRM_FORMAT_MOD_VS_DEC_TILE_8X4 0x03
+#define DRM_FORMAT_MOD_VS_DEC_TILE_4X8 0x04
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_16X4 0x06
+#define DRM_FORMAT_MOD_VS_DEC_TILE_64X4 0x07
+#define DRM_FORMAT_MOD_VS_DEC_TILE_32X4 0x08
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_256X1 0x09
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_128X1 0x0A
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_64X4 0x0B
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_256X2 0x0C
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_128X2 0x0D
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_128X4 0x0E
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_64X1 0x0F
+#define DRM_FORMAT_MOD_VS_DEC_TILE_16X8 0x10
+#define DRM_FORMAT_MOD_VS_DEC_TILE_8X16 0x11
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_512X1 0x12
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_32X4 0x13
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_64X2 0x14
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_32X2 0x15
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_32X1 0x16
+#define DRM_FORMAT_MOD_VS_DEC_RASTER_16X1 0x17
+#define DRM_FORMAT_MOD_VS_DEC_TILE_128X4 0x18
+#define DRM_FORMAT_MOD_VS_DEC_TILE_256X4 0x19
+#define DRM_FORMAT_MOD_VS_DEC_TILE_512X4 0x1A
+#define DRM_FORMAT_MOD_VS_DEC_TILE_16X16 0x1B
+#define DRM_FORMAT_MOD_VS_DEC_TILE_32X16 0x1C
+#define DRM_FORMAT_MOD_VS_DEC_TILE_64X16 0x1D
+#define DRM_FORMAT_MOD_VS_DEC_TILE_128X8 0x1E
+#define DRM_FORMAT_MOD_VS_DEC_TILE_8X4_S 0x1F
+#define DRM_FORMAT_MOD_VS_DEC_TILE_16X4_S 0x20
+#define DRM_FORMAT_MOD_VS_DEC_TILE_32X4_S 0x21
+#define DRM_FORMAT_MOD_VS_DEC_TILE_16X4_LSB 0x22
+#define DRM_FORMAT_MOD_VS_DEC_TILE_32X4_LSB 0x23
+#define DRM_FORMAT_MOD_VS_DEC_TILE_32X8 0x24
+
+#define DRM_FORMAT_MOD_VS_DEC_ALIGN_32 (0x01 << 6)
+#define DRM_FORMAT_MOD_VS_DEC_ALIGN_64 (0x01 << 7)
+
+#define fourcc_mod_vs_dec_code(tile, align) \
+ fourcc_mod_vs_code(DRM_FORMAT_MOD_VS_TYPE_COMPRESSED, \
+ ((tile) | (align)))
+
+#define DRM_FORMAT_MOD_VS_NORM_MODE_MASK 0x1F
+#define DRM_FORMAT_MOD_VS_LINEAR 0x00
+#define DRM_FORMAT_MOD_VS_TILED4x4 0x01
+#define DRM_FORMAT_MOD_VS_SUPER_TILED_XMAJOR 0x02
+#define DRM_FORMAT_MOD_VS_SUPER_TILED_YMAJOR 0x03
+#define DRM_FORMAT_MOD_VS_TILE_8X8 0x04
+#define DRM_FORMAT_MOD_VS_TILE_MODE1 0x05
+#define DRM_FORMAT_MOD_VS_TILE_MODE2 0x06
+#define DRM_FORMAT_MOD_VS_TILE_8X4 0x07
+#define DRM_FORMAT_MOD_VS_TILE_MODE4 0x08
+#define DRM_FORMAT_MOD_VS_TILE_MODE5 0x09
+#define DRM_FORMAT_MOD_VS_TILE_MODE6 0x0A
+#define DRM_FORMAT_MOD_VS_SUPER_TILED_XMAJOR_8X4 0x0B
+#define DRM_FORMAT_MOD_VS_SUPER_TILED_YMAJOR_4X8 0x0C
+#define DRM_FORMAT_MOD_VS_TILE_Y 0x0D
+#define DRM_FORMAT_MOD_VS_TILE_128X1 0x0F
+#define DRM_FORMAT_MOD_VS_TILE_256X1 0x10
+#define DRM_FORMAT_MOD_VS_TILE_32X1 0x11
+#define DRM_FORMAT_MOD_VS_TILE_64X1 0x12
+#define DRM_FORMAT_MOD_VS_TILE_MODE4X4 0x15
+
+#define fourcc_mod_vs_norm_code(tile) \
+ fourcc_mod_vs_code(DRM_FORMAT_MOD_VS_TYPE_NORMAL, \
+ (tile))
+
+#define fourcc_mod_vs_custom_code(tile) \
+ fourcc_mod_vs_code(DRM_FORMAT_MOD_VS_TYPE_CUSTOM_10BIT, \
+ (tile))
+
#if defined(__cplusplus)
}
#endif
projects / platform / kernel / linux-starfive.git / commitdiff