| 1 | |
| 2 |
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| 3 | #include <linux/export.h>
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| 4 |
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| 5 | #include <drm/clients/drm_client_setup.h>
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| 6 | #include <drm/drm_device.h>
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| 7 | #include <drm/drm_drv.h>
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| 8 | #include <drm/drm_fourcc.h>
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| 9 | #include <drm/drm_print.h>
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| 10 |
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| 11 | #include "drm_client_internal.h"
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| 12 |
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| 13 | static char drm_client_default[16] = CONFIG_DRM_CLIENT_DEFAULT;
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| 14 | module_param_string(active, drm_client_default, sizeof(drm_client_default), 0444);
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| 15 | MODULE_PARM_DESC(active,
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| 16 | "Choose which drm client to start, default is "
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| 17 | CONFIG_DRM_CLIENT_DEFAULT);
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| 18 |
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| 19 | |
| 20 | * drm_client_setup() - Setup in-kernel DRM clients
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| 21 | * @dev: DRM device
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| 22 | * @format: Preferred pixel format for the device. Use NULL, unless
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| 23 | * there is clearly a driver-preferred format.
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| 24 | *
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| 25 | * This function sets up the in-kernel DRM clients. Restore, hotplug
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| 26 | * events and teardown are all taken care of.
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| 27 | *
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| 28 | * Drivers should call drm_client_setup() after registering the new
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| 29 | * DRM device with drm_dev_register(). This function is safe to call
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| 30 | * even when there are no connectors present. Setup will be retried
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| 31 | * on the next hotplug event.
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| 32 | *
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| 33 | * The clients are destroyed by drm_dev_unregister().
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| 34 |
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| 35 | void drm_client_setup(struct drm_device *dev, const struct drm_format_info *format)
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| 36 | {
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| 37 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) {
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| 38 | drm_dbg(dev, "driver does not support mode-setting, skipping DRM clients\n");
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| 39 | return;
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| 40 | }
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| 41 |
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| 42 | #ifdef CONFIG_DRM_FBDEV_EMULATION
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| 43 | if (!strcmp(drm_client_default, "fbdev")) {
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| 44 | int ret;
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| 45 |
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| 46 | ret = drm_fbdev_client_setup(dev, format);
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| 47 | if (ret)
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| 48 | drm_warn(dev, "Failed to set up DRM client; error %d\n", ret);
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| 49 | return;
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| 50 | }
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| 51 | #endif
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| 52 |
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| 53 | #ifdef CONFIG_DRM_CLIENT_LOG
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| 54 | if (!strcmp(drm_client_default, "log")) {
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| 55 | drm_log_register(dev);
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| 56 | return;
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| 57 | }
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| 58 | #endif
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| 59 | if (strcmp(drm_client_default, ""))
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| 60 | drm_warn(dev, "Unknown DRM client %s\n", drm_client_default);
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| 61 | }
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| 62 | EXPORT_SYMBOL(drm_client_setup);
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| 63 |
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| 64 | |
| 65 | * drm_client_setup_with_fourcc() - Setup in-kernel DRM clients for color mode
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| 66 | * @dev: DRM device
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| 67 | * @fourcc: Preferred pixel format as 4CC code for the device
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| 68 | *
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| 69 | * This function sets up the in-kernel DRM clients. It is equivalent
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| 70 | * to drm_client_setup(), but expects a 4CC code as second argument.
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| 71 |
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| 72 | void drm_client_setup_with_fourcc(struct drm_device *dev, u32 fourcc)
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| 73 | {
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| 74 | drm_client_setup(dev, drm_format_info(fourcc));
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| 75 | }
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| 76 | EXPORT_SYMBOL(drm_client_setup_with_fourcc);
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| 77 |
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| 78 | |
| 79 | * drm_client_setup_with_color_mode() - Setup in-kernel DRM clients for color mode
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| 80 | * @dev: DRM device
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| 81 | * @color_mode: Preferred color mode for the device
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| 82 | *
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| 83 | * This function sets up the in-kernel DRM clients. It is equivalent
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| 84 | * to drm_client_setup(), but expects a color mode as second argument.
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| 85 | *
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| 86 | * Do not use this function in new drivers. Prefer drm_client_setup() with a
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| 87 | * format of NULL.
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| 88 |
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| 89 | void drm_client_setup_with_color_mode(struct drm_device *dev, unsigned int color_mode)
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| 90 | {
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| 91 | u32 fourcc = drm_driver_color_mode_format(dev, color_mode);
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| 92 |
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| 93 | drm_client_setup_with_fourcc(dev, fourcc);
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| 94 | }
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| 95 | EXPORT_SYMBOL(drm_client_setup_with_color_mode);
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| 96 |
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| 97 | MODULE_DESCRIPTION("In-kernel DRM clients");
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| 98 | MODULE_LICENSE("GPL and additional rights");
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