[PATCH v6 02/11] drm/hisilicon: Add hisilicon kirin drm master driver
Archit Taneja
architt at codeaurora.org
Fri Feb 26 00:54:18 PST 2016
Hi,
I had some minor comments. Sorry about sharing this late. Otherwise,
the looks good to me.
On 02/26/2016 02:10 PM, Xinliang Liu wrote:
> Add kirin DRM master driver for hi6220 SoC which used in HiKey board.
> Add dumb buffer feature.
> Add prime dmabuf feature.
>
> v6: None.
> v5: None.
> v4: None.
> v3:
> - Move and rename all the files to kirin sub-directory.
> So that we could separate different seires SoCs' driver.
> - Replace drm_platform_init, load, unload implementation.
> v2:
> - Remove abtraction layer.
>
> Signed-off-by: Xinliang Liu <xinliang.liu at linaro.org>
> ---
> drivers/gpu/drm/Kconfig | 2 +
> drivers/gpu/drm/Makefile | 1 +
> drivers/gpu/drm/hisilicon/Kconfig | 5 +
> drivers/gpu/drm/hisilicon/Makefile | 5 +
> drivers/gpu/drm/hisilicon/kirin/Kconfig | 9 +
> drivers/gpu/drm/hisilicon/kirin/Makefile | 3 +
> drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 321 ++++++++++++++++++++++++
> drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h | 20 ++
> 8 files changed, 366 insertions(+)
> create mode 100644 drivers/gpu/drm/hisilicon/Kconfig
> create mode 100644 drivers/gpu/drm/hisilicon/Makefile
> create mode 100644 drivers/gpu/drm/hisilicon/kirin/Kconfig
> create mode 100644 drivers/gpu/drm/hisilicon/kirin/Makefile
> create mode 100644 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
> create mode 100644 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.h
>
> diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
> index b50ae60f5f50..f5c5656e2547 100644
> --- a/drivers/gpu/drm/Kconfig
> +++ b/drivers/gpu/drm/Kconfig
> @@ -277,3 +277,5 @@ source "drivers/gpu/drm/imx/Kconfig"
> source "drivers/gpu/drm/vc4/Kconfig"
>
> source "drivers/gpu/drm/etnaviv/Kconfig"
> +
> +source "drivers/gpu/drm/hisilicon/Kconfig"
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index 61766dec6a8d..60554832079c 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -74,3 +74,4 @@ obj-y += panel/
> obj-y += bridge/
> obj-$(CONFIG_DRM_FSL_DCU) += fsl-dcu/
> obj-$(CONFIG_DRM_ETNAVIV) += etnaviv/
> +obj-y += hisilicon/
> diff --git a/drivers/gpu/drm/hisilicon/Kconfig b/drivers/gpu/drm/hisilicon/Kconfig
> new file mode 100644
> index 000000000000..558c61b1b8e8
> --- /dev/null
> +++ b/drivers/gpu/drm/hisilicon/Kconfig
> @@ -0,0 +1,5 @@
> +#
> +# hisilicon drm device configuration.
> +# Please keep this list sorted alphabetically
> +
> +source "drivers/gpu/drm/hisilicon/kirin/Kconfig"
> diff --git a/drivers/gpu/drm/hisilicon/Makefile b/drivers/gpu/drm/hisilicon/Makefile
> new file mode 100644
> index 000000000000..e3f6d493c996
> --- /dev/null
> +++ b/drivers/gpu/drm/hisilicon/Makefile
> @@ -0,0 +1,5 @@
> +#
> +# Makefile for hisilicon drm drivers.
> +# Please keep this list sorted alphabetically
> +
> +obj-$(CONFIG_DRM_HISI_KIRIN) += kirin/
> diff --git a/drivers/gpu/drm/hisilicon/kirin/Kconfig b/drivers/gpu/drm/hisilicon/kirin/Kconfig
> new file mode 100644
> index 000000000000..3ac4b8edeac1
> --- /dev/null
> +++ b/drivers/gpu/drm/hisilicon/kirin/Kconfig
> @@ -0,0 +1,9 @@
> +config DRM_HISI_KIRIN
> + tristate "DRM Support for Hisilicon Kirin series SoCs Platform"
> + depends on DRM
> + select DRM_KMS_HELPER
> + select DRM_GEM_CMA_HELPER
> + select DRM_KMS_CMA_HELPER
> + help
> + Choose this option if you have a hisilicon Kirin chipsets(hi6220).
> + If M is selected the module will be called kirin-drm.
> diff --git a/drivers/gpu/drm/hisilicon/kirin/Makefile b/drivers/gpu/drm/hisilicon/kirin/Makefile
> new file mode 100644
> index 000000000000..cb346de47d48
> --- /dev/null
> +++ b/drivers/gpu/drm/hisilicon/kirin/Makefile
> @@ -0,0 +1,3 @@
> +kirin-drm-y := kirin_drm_drv.o
> +
> +obj-$(CONFIG_DRM_HISI_KIRIN) += kirin-drm.o
> diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
> new file mode 100644
> index 000000000000..789ebd1f5922
> --- /dev/null
> +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
> @@ -0,0 +1,321 @@
> +/*
> + * Hisilicon Kirin SoCs drm master driver
> + *
> + * Copyright (c) 2016 Linaro Limited.
> + * Copyright (c) 2014-2016 Hisilicon Limited.
> + *
> + * Author:
> + * Xinliang Liu <z.liuxinliang at hisilicon.com>
> + * Xinliang Liu <xinliang.liu at linaro.org>
> + * Xinwei Kong <kong.kongxinwei at hisilicon.com>
> + *
> + * 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/of_platform.h>
> +#include <linux/component.h>
> +#include <linux/of_graph.h>
> +
> +#include <drm/drmP.h>
> +#include <drm/drm_gem_cma_helper.h>
> +#include <drm/drm_fb_cma_helper.h>
> +#include <drm/drm_atomic_helper.h>
> +
> +#include "kirin_drm_drv.h"
> +
> +static struct kirin_dc_ops *dc_ops;
> +
> +static int kirin_drm_kms_cleanup(struct drm_device *dev)
> +{
> + dc_ops->cleanup(dev);
> + drm_mode_config_cleanup(dev);
> +
> + return 0;
> +}
> +
> +static const struct drm_mode_config_funcs kirin_drm_mode_config_funcs = {
> + .fb_create = drm_fb_cma_create,
> + .atomic_check = drm_atomic_helper_check,
> + .atomic_commit = drm_atomic_helper_commit,
> +};
> +
> +static void kirin_drm_mode_config_init(struct drm_device *dev)
> +{
> + dev->mode_config.min_width = 0;
> + dev->mode_config.min_height = 0;
> +
> + dev->mode_config.max_width = 2048;
> + dev->mode_config.max_height = 2048;
> +
> + dev->mode_config.funcs = &kirin_drm_mode_config_funcs;
> +}
> +
> +static int kirin_drm_kms_init(struct drm_device *dev)
> +{
> + int ret;
> +
> + dev_set_drvdata(dev->dev, dev);
> +
> + /* dev->mode_config initialization */
> + drm_mode_config_init(dev);
> + kirin_drm_mode_config_init(dev);
> +
> + /* display controller init */
> + ret = dc_ops->init(dev);
> + if (ret)
> + goto err_mode_config_cleanup;
> +
> + /* bind and init sub drivers */
> + ret = component_bind_all(dev->dev, dev);
> + if (ret) {
> + DRM_ERROR("failed to bind all component.\n");
> + goto err_dc_cleanup;
> + }
> +
> + /* reset all the states of crtc/plane/encoder/connector */
> + drm_mode_config_reset(dev);
> +
> + return 0;
> +
> +err_dc_cleanup:
> + dc_ops->cleanup(dev);
> +err_mode_config_cleanup:
> + drm_mode_config_cleanup(dev);
> +
> + return ret;
> +}
> +
> +static const struct file_operations kirin_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 = no_llseek,
> + .mmap = drm_gem_cma_mmap,
> +};
> +
> +static int kirin_gem_cma_dumb_create(struct drm_file *file,
> + struct drm_device *dev,
> + struct drm_mode_create_dumb *args)
> +{
> + return drm_gem_cma_dumb_create_internal(file, dev, args);
> +}
> +
> +static struct drm_driver kirin_drm_driver = {
> + .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME |
> + DRIVER_ATOMIC,
> + .fops = &kirin_drm_fops,
> + .set_busid = drm_platform_set_busid,
> +
> + .gem_free_object = drm_gem_cma_free_object,
> + .gem_vm_ops = &drm_gem_cma_vm_ops,
> + .dumb_create = kirin_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,
> +
> + .name = "kirin",
> + .desc = "Hisilicon Kirin SoCs' DRM Driver",
> + .date = "20150718",
> + .major = 1,
> + .minor = 0,
> +};
> +
> +static int compare_of(struct device *dev, void *data)
> +{
> + return dev->of_node == data;
> +}
> +
> +static int kirin_drm_connectors_register(struct drm_device *dev)
> +{
> + struct drm_connector *connector;
> + struct drm_connector *failed_connector;
> + int ret;
> +
This access needs to be protected by the dev->mode_config.mutex
> + list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
The above can be replaced with:
drm_for_each_connector(connector, dev) {
> + ret = drm_connector_register(connector);
> + if (ret) {
> + failed_connector = connector;
> + goto err;
> + }
> + }
> +
> + return 0;
> +
> +err:
> + list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
> + if (failed_connector == connector)
> + break;
> + drm_connector_unregister(connector);
> + }
Same points as above.
> +
> + return ret;
> +}
> +
> +static int kirin_drm_bind(struct device *dev)
> +{
> + struct drm_driver *driver = &kirin_drm_driver;
> + struct drm_device *drm_dev;
> + int ret;
> +
> + drm_dev = drm_dev_alloc(driver, dev);
> + if (!drm_dev)
> + return -ENOMEM;
> +
> + drm_dev->platformdev = to_platform_device(dev);
> +
> + ret = kirin_drm_kms_init(drm_dev);
> + if (ret)
> + goto err_drm_dev_unref;
> +
> + ret = drm_dev_register(drm_dev, 0);
> + if (ret)
> + goto err_kms_cleanup;
> +
> + /* connectors should be registered after drm device register */
> + ret = kirin_drm_connectors_register(drm_dev);
> + if (ret)
> + goto err_drm_dev_unregister;
> +
> + DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
> + driver->name, driver->major, driver->minor, driver->patchlevel,
> + driver->date, drm_dev->primary->index);
> +
> + return 0;
> +
> +err_drm_dev_unregister:
> + drm_dev_unregister(drm_dev);
> +err_kms_cleanup:
> + kirin_drm_kms_cleanup(drm_dev);
> +err_drm_dev_unref:
> + drm_dev_unref(drm_dev);
> +
> + return ret;
> +}
> +
> +static void kirin_drm_unbind(struct device *dev)
> +{
> + drm_put_dev(dev_get_drvdata(dev));
> +}
> +
> +static const struct component_master_ops kirin_drm_ops = {
> + .bind = kirin_drm_bind,
> + .unbind = kirin_drm_unbind,
> +};
> +
> +static const struct of_device_id kirin_drm_dt_ids[] = {
> + { /* end node */ },
> +};
> +MODULE_DEVICE_TABLE(of, kirin_drm_dt_ids);
> +
> +static int kirin_get_dc_ops(struct device_node *np)
> +{
> + const struct of_device_id *match_id;
> +
> + match_id = of_match_node(kirin_drm_dt_ids, np);
> + if (!match_id) {
> + DRM_ERROR("failed to match dt id\n");
> + return -EINVAL;
> + }
> +
> + dc_ops = (struct kirin_dc_ops *)match_id->data;
> + if (!dc_ops) {
> + DRM_ERROR("dt id data is null\n");
> + return -EINVAL;
> + }
We can use of_device_get_match_data to get the match data,
and move the kirin_drm_dt_ids table down where the driver is
defined.
<snip>
Thanks,
Archit
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