diff options
| author | Rajan Vaja <rajan.vaja@xilinx.com> | 2018-10-08 11:21:44 -0700 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2018-10-09 13:26:21 +0200 |
| commit | 3b0296b8c893adb17b422179b9e779e4c32aa347 (patch) | |
| tree | 81fe6d6d0ff3a833097c5cfe11442a4037bf7b07 /drivers/firmware/xilinx | |
| parent | 8cc7bc8ee21f539ffabf4ff7f30a0c6be9ac5ba9 (diff) | |
| download | linux-3b0296b8c893adb17b422179b9e779e4c32aa347.tar.bz2 | |
firmware: xilinx: Add zynqmp IOCTL API for device control
Add ZynqMP firmware IOCTL API to control and configure
devices like PLLs, SD, Gem, etc.
Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: Jolly Shah <jollys@xilinx.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'drivers/firmware/xilinx')
| -rw-r--r-- | drivers/firmware/xilinx/zynqmp.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 84b3fd2eca8b..9a1c72a9280f 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -428,6 +428,47 @@ static int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id) return ret; } +/** + * zynqmp_is_valid_ioctl() - Check whether IOCTL ID is valid or not + * @ioctl_id: IOCTL ID + * + * Return: 1 if IOCTL is valid else 0 + */ +static inline int zynqmp_is_valid_ioctl(u32 ioctl_id) +{ + switch (ioctl_id) { + case IOCTL_SET_PLL_FRAC_MODE: + case IOCTL_GET_PLL_FRAC_MODE: + case IOCTL_SET_PLL_FRAC_DATA: + case IOCTL_GET_PLL_FRAC_DATA: + return 1; + default: + return 0; + } +} + +/** + * zynqmp_pm_ioctl() - PM IOCTL API for device control and configs + * @node_id: Node ID of the device + * @ioctl_id: ID of the requested IOCTL + * @arg1: Argument 1 to requested IOCTL call + * @arg2: Argument 2 to requested IOCTL call + * @out: Returned output value + * + * This function calls IOCTL to firmware for device control and configuration. + * + * Return: Returns status, either success or error+reason + */ +static int zynqmp_pm_ioctl(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, + u32 *out) +{ + if (!zynqmp_is_valid_ioctl(ioctl_id)) + return -EINVAL; + + return zynqmp_pm_invoke_fn(PM_IOCTL, node_id, ioctl_id, + arg1, arg2, out); +} + static const struct zynqmp_eemi_ops eemi_ops = { .get_api_version = zynqmp_pm_get_api_version, .query_data = zynqmp_pm_query_data, @@ -440,6 +481,7 @@ static const struct zynqmp_eemi_ops eemi_ops = { .clock_getrate = zynqmp_pm_clock_getrate, .clock_setparent = zynqmp_pm_clock_setparent, .clock_getparent = zynqmp_pm_clock_getparent, + .ioctl = zynqmp_pm_ioctl, }; /** |