From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nava kishore Manne Subject: [PATCH 1/3] firmware: xilinx: Add zynqmp_pm_get_chipid() API Date: Sat, 20 Oct 2018 14:06:01 +0530 Message-ID: <20181020083603.27602-2-nava.manne@xilinx.com> References: <20181020083603.27602-1-nava.manne@xilinx.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <20181020083603.27602-1-nava.manne@xilinx.com> Sender: linux-kernel-owner@vger.kernel.org To: srinivas.kandagatla@linaro.org, robh+dt@kernel.org, mark.rutland@arm.com, michal.simek@xilinx.com, jollys@xilinx.com, rajanv@xilinx.com, nava.manne@xilinx.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org 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 --- Changes for v1: -None. Changes for RFC-V3: -corrected typo error in commit msg. Changes for RFC-v2: -New Patch. drivers/firmware/xilinx/zynqmp.c | 24 ++++++++++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 2 ++ 2 files changed, 26 insertions(+) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 84b3fd2..e76c889 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -187,6 +187,29 @@ static int zynqmp_pm_get_api_version(u32 *version) } /** + * 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 * @@ -430,6 +453,7 @@ static int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id) 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, diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 015e130..1d3126d 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -34,6 +34,7 @@ enum pm_api_id { PM_GET_API_VERSION = 1, + PM_GET_CHIPID = 22, PM_QUERY_DATA = 35, PM_CLOCK_ENABLE, PM_CLOCK_DISABLE, @@ -89,6 +90,7 @@ 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); -- 2.7.4