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Commit 3b0296b8 authored by Rajan Vaja's avatar Rajan Vaja Committed by Michal Simek
Browse files

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: default avatarRajan Vaja <rajan.vaja@xilinx.com>
Signed-off-by: default avatarJolly Shah <jollys@xilinx.com>
Acked-by: default avatarOlof Johansson <olof@lixom.net>
Signed-off-by: default avatarMichal Simek <michal.simek@xilinx.com>
parent 8cc7bc8e

drivers/firmware/xilinx/zynqmp.c

+42 −0
Original line number Diff line number Diff line
@@ -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,

};



/**

include/linux/firmware/xlnx-zynqmp.h

+3 −1
Original line number Diff line number Diff line
@@ -34,7 +34,8 @@ 


enum pm_api_id {

	PM_GET_API_VERSION = 1,

	PM_QUERY_DATA = 35,

	PM_IOCTL = 34,

	PM_QUERY_DATA,

	PM_CLOCK_ENABLE,

	PM_CLOCK_DISABLE,

	PM_CLOCK_GETSTATE,
@@ -99,6 +100,7 @@ struct zynqmp_eemi_ops { 
	int (*clock_getrate)(u32 clock_id, u64 *rate);

	int (*clock_setparent)(u32 clock_id, u32 parent_id);

	int (*clock_getparent)(u32 clock_id, u32 *parent_id);

	int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out);

};



#if IS_REACHABLE(CONFIG_ARCH_ZYNQMP)