From fe6f42cf6eb3183ebd6ab6b0b7dcbee2600c2baa Mon Sep 17 00:00:00 2001 From: Nava kishore Manne Date: Wed, 6 Feb 2019 16:37:19 +0530 Subject: 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 Signed-off-by: Michal Simek --- drivers/firmware/xilinx/zynqmp.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'drivers/firmware') diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 70b50377ae5f..16a23bc4c2c3 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -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, -- cgit