diff options
| author | Jolly Shah <jolly.shah@xilinx.com> | 2019-02-02 01:08:50 +0300 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2019-02-12 15:38:16 +0300 |
| commit | e23d9c6d0d4912fab12cd2d56070b0a8199772f0 (patch) | |
| tree | 69d39c71f30424ee14d13a12cb87ce8edc6c484c /drivers/firmware | |
| parent | c1986ac3d483b051fc237aea3e9812fd1bb4d239 (diff) | |
| download | linux-e23d9c6d0d4912fab12cd2d56070b0a8199772f0.tar.xz | |
drivers: soc: xilinx: Add ZynqMP power domain driver
The zynqmp-genpd driver communicates the usage requirements
for logical power domains / devices to the platform FW.
FW is responsible for choosing appropriate power states,
taking Linux' usage information into account.
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jolly.shah@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/xilinx/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/firmware/xilinx/zynqmp.c | 15 |
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/firmware/xilinx/Kconfig b/drivers/firmware/xilinx/Kconfig index 8f44b9cd295a..bd33bbf70daf 100644 --- a/drivers/firmware/xilinx/Kconfig +++ b/drivers/firmware/xilinx/Kconfig @@ -6,6 +6,7 @@ menu "Zynq MPSoC Firmware Drivers" config ZYNQMP_FIRMWARE bool "Enable Xilinx Zynq MPSoC firmware interface" + select MFD_CORE help Firmware interface driver is used by different drivers to communicate with the firmware for diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index af5cffd3ac43..98f936125643 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -14,6 +14,7 @@ #include <linux/compiler.h> #include <linux/device.h> #include <linux/init.h> +#include <linux/mfd/core.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_platform.h> @@ -23,6 +24,12 @@ #include <linux/firmware/xlnx-zynqmp.h> #include "zynqmp-debug.h" +static const struct mfd_cell firmware_devs[] = { + { + .name = "zynqmp_power_controller", + }, +}; + /** * zynqmp_pm_ret_code() - Convert PMU-FW error codes to Linux error codes * @ret_status: PMUFW return code @@ -689,11 +696,19 @@ static int zynqmp_firmware_probe(struct platform_device *pdev) zynqmp_pm_api_debugfs_init(); + ret = mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE, firmware_devs, + ARRAY_SIZE(firmware_devs), NULL, 0, NULL); + if (ret) { + dev_err(&pdev->dev, "failed to add MFD devices %d\n", ret); + return ret; + } + return of_platform_populate(dev->of_node, NULL, NULL, dev); } static int zynqmp_firmware_remove(struct platform_device *pdev) { + mfd_remove_devices(&pdev->dev); zynqmp_pm_api_debugfs_exit(); return 0; |