diff options
| author | Amit Daniel Kachhap <amit.kachhap@arm.com> | 2017-07-14 12:07:21 +0100 |
|---|---|---|
| committer | Arvind Chauhan <arvind.chauhan@arm.com> | 2017-10-31 13:10:41 +0530 |
| commit | 0aecb74c2c5cb22f4add6e1003180c3c8cbe05d6 (patch) | |
| tree | 917f2d05e1c1dd5a505b7dd33ccea65cec02b10d | |
| parent | 455d6cab9457ac76fc0aad2d23079186dcf3b33e (diff) | |
drivers: gpu: arm: add dvfs driver for gpu opp
Change-Id: I325f413fcc820ccfa0073f702279e97bb8b571cd
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Signed-off-by: Tushar Khandelwal <tushar.khandelwal@arm.com>
[Resolved merge conflicts]
Signed-off-by: Arvind Chauhan <arvind.chauhan@arm.com>
| -rw-r--r-- | drivers/gpu/arm/midgard/platform/devicetree/Kbuild | 3 | ||||
| -rw-r--r-- | drivers/gpu/arm/midgard/platform/devicetree/scmi_mali_opp.c | 58 |
2 files changed, 60 insertions, 1 deletions
diff --git a/drivers/gpu/arm/midgard/platform/devicetree/Kbuild b/drivers/gpu/arm/midgard/platform/devicetree/Kbuild index d40d7982ff04..802d7ba4a75f 100644 --- a/drivers/gpu/arm/midgard/platform/devicetree/Kbuild +++ b/drivers/gpu/arm/midgard/platform/devicetree/Kbuild @@ -15,4 +15,5 @@ mali_kbase-y += \ $(MALI_PLATFORM_DIR)/mali_kbase_config_devicetree.o \ - $(MALI_PLATFORM_DIR)/mali_kbase_runtime_pm.o + $(MALI_PLATFORM_DIR)/mali_kbase_runtime_pm.o \ + $(MALI_PLATFORM_DIR)/scmi_mali_opp.o diff --git a/drivers/gpu/arm/midgard/platform/devicetree/scmi_mali_opp.c b/drivers/gpu/arm/midgard/platform/devicetree/scmi_mali_opp.c new file mode 100644 index 000000000000..2564416ecef3 --- /dev/null +++ b/drivers/gpu/arm/midgard/platform/devicetree/scmi_mali_opp.c @@ -0,0 +1,58 @@ +/* + * + * (C) COPYRIGHT 2017 ARM Limited. All rights reserved. + * + * This program is free software and is provided to you under the terms of the + * GNU General Public License version 2 as published by the Free Software + * Foundation, and any use by you of this program is subject to the terms + * of such GNU licence. + * + * A copy of the licence is included with the program, and can also be obtained + * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + * Boston, MA 02110-1301, USA. + * + */ + +#include <linux/module.h> +#include <linux/of_platform.h> +#include <linux/platform_device.h> +#include <linux/pm_opp.h> +#include <linux/scmi_protocol.h> +#include <linux/version.h> + +static int scmi_gpu_opps_probe(struct platform_device *pdev) +{ + struct device_node *np; + struct platform_device *gpu_pdev; + int err; + + np = of_find_node_by_name(NULL, "gpu"); + if (!np) { + dev_err(&pdev->dev, "Failed to find DT entry for Mali\n"); + return -EFAULT; + } + + gpu_pdev = of_find_device_by_node(np); + if (!gpu_pdev) { + dev_err(&pdev->dev, "Failed to find device for Mali\n"); + of_node_put(np); + return -EFAULT; + } + + of_node_put(np); + + return err; +} + + +static struct platform_driver scmi_gpu_opp_driver = { + .driver = { + .name = "scmi_gpu_opp", + }, + .probe = scmi_gpu_opps_probe, +}; +module_platform_driver(scmi_gpu_opp_driver); + +MODULE_AUTHOR("Amit Kachhap <amit.kachhap@arm.com>"); +MODULE_DESCRIPTION("ARM SCMI GPU opp driver"); +MODULE_LICENSE("GPL v2"); |