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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 21:00:37 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-06-19 21:00:37 +0000 |
commit | 94ac2ab3fff96814d7460a27a0e9d004abbd4128 (patch) | |
tree | 9a4eb8cc234b540b0f4b93363109cdd37a20540b /drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c | |
parent | Adding debian version 6.8.12-1. (diff) | |
download | linux-94ac2ab3fff96814d7460a27a0e9d004abbd4128.tar.xz linux-94ac2ab3fff96814d7460a27a0e9d004abbd4128.zip |
Merging upstream version 6.9.2.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c')
-rw-r--r-- | drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c new file mode 100644 index 0000000000..470d34da1d --- /dev/null +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_du_drv.c @@ -0,0 +1,175 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * RZ/G2L Display Unit DRM driver + * + * Copyright (C) 2023 Renesas Electronics Corporation + * + * Based on rcar_du_drv.c + */ + +#include <linux/dma-mapping.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_drv.h> +#include <drm/drm_fbdev_generic.h> +#include <drm/drm_gem_dma_helper.h> +#include <drm/drm_probe_helper.h> + +#include "rzg2l_du_drv.h" +#include "rzg2l_du_kms.h" + +/* ----------------------------------------------------------------------------- + * Device Information + */ + +static const struct rzg2l_du_device_info rzg2l_du_r9a07g044_info = { + .channels_mask = BIT(0), + .routes = { + [RZG2L_DU_OUTPUT_DSI0] = { + .possible_outputs = BIT(0), + .port = 0, + }, + [RZG2L_DU_OUTPUT_DPAD0] = { + .possible_outputs = BIT(0), + .port = 1, + } + } +}; + +static const struct of_device_id rzg2l_du_of_table[] = { + { .compatible = "renesas,r9a07g044-du", .data = &rzg2l_du_r9a07g044_info }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, rzg2l_du_of_table); + +const char *rzg2l_du_output_name(enum rzg2l_du_output output) +{ + static const char * const names[] = { + [RZG2L_DU_OUTPUT_DSI0] = "DSI0", + [RZG2L_DU_OUTPUT_DPAD0] = "DPAD0" + }; + + if (output >= ARRAY_SIZE(names)) + return "UNKNOWN"; + + return names[output]; +} + +/* ----------------------------------------------------------------------------- + * DRM operations + */ + +DEFINE_DRM_GEM_DMA_FOPS(rzg2l_du_fops); + +static const struct drm_driver rzg2l_du_driver = { + .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, + .dumb_create = rzg2l_du_dumb_create, + .fops = &rzg2l_du_fops, + .name = "rzg2l-du", + .desc = "Renesas RZ/G2L Display Unit", + .date = "20230410", + .major = 1, + .minor = 0, +}; + +/* ----------------------------------------------------------------------------- + * Platform driver + */ + +static void rzg2l_du_remove(struct platform_device *pdev) +{ + struct rzg2l_du_device *rcdu = platform_get_drvdata(pdev); + struct drm_device *ddev = &rcdu->ddev; + + drm_dev_unregister(ddev); + drm_atomic_helper_shutdown(ddev); + + drm_kms_helper_poll_fini(ddev); +} + +static void rzg2l_du_shutdown(struct platform_device *pdev) +{ + struct rzg2l_du_device *rcdu = platform_get_drvdata(pdev); + + drm_atomic_helper_shutdown(&rcdu->ddev); +} + +static int rzg2l_du_probe(struct platform_device *pdev) +{ + struct rzg2l_du_device *rcdu; + int ret; + + if (drm_firmware_drivers_only()) + return -ENODEV; + + /* Allocate and initialize the RZ/G2L device structure. */ + rcdu = devm_drm_dev_alloc(&pdev->dev, &rzg2l_du_driver, + struct rzg2l_du_device, ddev); + if (IS_ERR(rcdu)) + return PTR_ERR(rcdu); + + rcdu->dev = &pdev->dev; + rcdu->info = of_device_get_match_data(rcdu->dev); + + platform_set_drvdata(pdev, rcdu); + + /* I/O resources */ + rcdu->mmio = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(rcdu->mmio)) + return PTR_ERR(rcdu->mmio); + + ret = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + if (ret) + return ret; + + /* DRM/KMS objects */ + ret = rzg2l_du_modeset_init(rcdu); + if (ret < 0) { + /* + * Don't use dev_err_probe(), as it would overwrite the probe + * deferral reason recorded in rzg2l_du_modeset_init(). + */ + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, + "failed to initialize DRM/KMS (%d)\n", ret); + goto error; + } + + /* + * Register the DRM device with the core and the connectors with + * sysfs. + */ + ret = drm_dev_register(&rcdu->ddev, 0); + if (ret) + goto error; + + drm_info(&rcdu->ddev, "Device %s probed\n", dev_name(&pdev->dev)); + + drm_fbdev_generic_setup(&rcdu->ddev, 32); + + return 0; + +error: + drm_kms_helper_poll_fini(&rcdu->ddev); + return ret; +} + +static struct platform_driver rzg2l_du_platform_driver = { + .probe = rzg2l_du_probe, + .remove_new = rzg2l_du_remove, + .shutdown = rzg2l_du_shutdown, + .driver = { + .name = "rzg2l-du", + .of_match_table = rzg2l_du_of_table, + }, +}; + +module_platform_driver(rzg2l_du_platform_driver); + +MODULE_AUTHOR("Biju Das <biju.das.jz@bp.renesas.com>"); +MODULE_DESCRIPTION("Renesas RZ/G2L Display Unit DRM Driver"); +MODULE_LICENSE("GPL"); |