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firmware: xilinx: Add zynqmp_pm_get_chipid() API 

This patch adds a new API to provide access to the
hardware related data like soc revision, IDCODE... etc.

Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Nava kishore Manne 2019-02-06 16:37:19 +05:30 committed by Michal Simek
parent 62f0d7dc3b
commit fe6f42cf6e
2 changed files with 26 additions and 0 deletions
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24
drivers/firmware/xilinx/zynqmp.c
View File

@ -186,6 +186,29 @@ static int zynqmp_pm_get_api_version(u32 *version)
return ret;
}
/**
* zynqmp_pm_get_chipid - Get silicon ID registers
* @idcode: IDCODE register
* @version: version register
*
* Return: Returns the status of the operation and the idcode and version
* registers in @idcode and @version.
*/
static int zynqmp_pm_get_chipid(u32 *idcode, u32 *version)
{
u32 ret_payload[PAYLOAD_ARG_CNT];
int ret;
if (!idcode || !version)
return -EINVAL;
ret = zynqmp_pm_invoke_fn(PM_GET_CHIPID, 0, 0, 0, 0, ret_payload);
*idcode = ret_payload[1];
*version = ret_payload[2];
return ret;
}
/**
* zynqmp_pm_get_trustzone_version() - Get secure trustzone firmware version
* @version: Returned version value
@ -509,6 +532,7 @@ static int zynqmp_pm_reset_get_status(const enum zynqmp_pm_reset reset,
static const struct zynqmp_eemi_ops eemi_ops = {
.get_api_version = zynqmp_pm_get_api_version,
.get_chipid = zynqmp_pm_get_chipid,
.query_data = zynqmp_pm_query_data,
.clock_enable = zynqmp_pm_clock_enable,
.clock_disable = zynqmp_pm_clock_disable,

2
include/linux/firmware/xlnx-zynqmp.h
View File

@ -36,6 +36,7 @@ enum pm_api_id {
PM_GET_API_VERSION = 1,
PM_RESET_ASSERT = 17,
PM_RESET_GET_STATUS,
PM_GET_CHIPID = 24,
PM_IOCTL = 34,
PM_QUERY_DATA,
PM_CLOCK_ENABLE,
@ -224,6 +225,7 @@ struct zynqmp_pm_query_data {
struct zynqmp_eemi_ops {
int (*get_api_version)(u32 *version);
int (*get_chipid)(u32 *idcode, u32 *version);
int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out);
int (*clock_enable)(u32 clock_id);
int (*clock_disable)(u32 clock_id);