Message ID | 1536054754-3119-2-git-send-email-nava.manne@xilinx.com (mailing list archive) |
---|---|
State | Superseded, archived |
Headers | show
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Tue, 04 Sep 2018 02:52:57 -0700 Received: from [127.0.0.1] (helo=localhost) by xsj-pvapsmtp01 with smtp (Exim 4.63) (envelope-from <nava.manne@xilinx.com>) id 1fx80y-0004vm-B7; Tue, 04 Sep 2018 02:52:52 -0700 Received: from xsj-pvapsmtp01 (mailhost.xilinx.com [149.199.38.66]) by xsj-smtp-dlp2.xlnx.xilinx.com (8.13.8/8.13.1) with ESMTP id w849qj12018790; Tue, 4 Sep 2018 02:52:46 -0700 Received: from [172.23.37.94] (helo=xhdappanad40.xilinx.com) by xsj-pvapsmtp01 with esmtp (Exim 4.63) (envelope-from <nava.manne@xilinx.com>) id 1fx80r-0004tv-Bh; Tue, 04 Sep 2018 02:52:45 -0700 From: Nava kishore Manne <nava.manne@xilinx.com> To: <robh+dt@kernel.org>, <mark.rutland@arm.com>, <michal.simek@xilinx.com>, <srinivas.kandagatla@linaro.org>, <nava.manne@xilinx.com>, <rajanv@xilinx.com>, <jollys@xilinx.com>, <devicetree@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org> Subject: [RFC PATCH v2 1/3] fairmware: xilinx: Add zynqmp_pm_get_chipid() API Date: Tue, 4 Sep 2018 15:22:32 +0530 Message-ID: <1536054754-3119-2-git-send-email-nava.manne@xilinx.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1536054754-3119-1-git-send-email-nava.manne@xilinx.com> References: <1536054754-3119-1-git-send-email-nava.manne@xilinx.com> X-RCIS-Action: ALLOW X-TM-AS-Product-Ver: IMSS-7.1.0.1224-8.2.0.1013-23620.005 X-TM-AS-User-Approved-Sender: Yes;Yes X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:149.199.60.83; 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Add nvmem driver support for ZynqMP
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diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 7ccedf0..7a33f93 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -447,8 +447,32 @@ static int zynqmp_pm_clock_getparent(u32 clock_id, u32 *parent_id) 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; +} + static const struct zynqmp_eemi_ops eemi_ops = { .get_api_version = zynqmp_pm_get_api_version, + .get_chipid = zynqmp_pm_get_chipid, .ioctl = zynqmp_pm_ioctl, .query_data = zynqmp_pm_query_data, .clock_enable = zynqmp_pm_clock_enable, diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 58a7478..5a49d6f 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_IOCTL = 34, PM_QUERY_DATA, PM_CLOCK_ENABLE, @@ -90,6 +91,7 @@ struct zynqmp_pm_query_data { struct zynqmp_eemi_ops { int (*get_api_version)(u32 *version); + int (*get_chipid)(u32 *idcode, u32 *version); int (*ioctl)(u32 node_id, u32 ioctl_id, u32 arg1, u32 arg2, u32 *out); int (*query_data)(struct zynqmp_pm_query_data qdata, u32 *out); int (*clock_enable)(u32 clock_id);
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> --- Changes for v2: -New Patch. drivers/firmware/xilinx/zynqmp.c | 24 ++++++++++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 2 ++ 2 files changed, 26 insertions(+)