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[PATCH v5 2/4] firmware: xilinx: Add zynqmp IOCTL API for device control Date: Fri, 28 Sep 2018 15:17:58 -0700 Message-ID: <1538173080-7597-3-git-send-email-jollys@xilinx.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1538173080-7597-1-git-send-email-jollys@xilinx.com> References: <1538173080-7597-1-git-send-email-jollys@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: 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xilinx.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Sep 2018 22:18:26.0433 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 928c50dd-1706-4450-e96a-08d625904fbe X-MS-Exchange-CrossTenant-Id: 657af505-d5df-48d0-8300-c31994686c5c X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=657af505-d5df-48d0-8300-c31994686c5c;Ip=[149.199.60.83];Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR02MB4761 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Rajan Vaja Add ZynqMP firmware IOCTL API to control and configure devices like PLLs, SD, Gem, etc. Signed-off-by: Rajan Vaja Signed-off-by: Jolly Shah Acked-by: Olof Johansson --- drivers/firmware/xilinx/zynqmp.c | 42 ++++++++++++++++++++++++++++++++++++ include/linux/firmware/xlnx-zynqmp.h | 4 +++- 2 files changed, 45 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c index 84b3fd2..9a1c72a 100644 --- a/drivers/firmware/xilinx/zynqmp.c +++ b/drivers/firmware/xilinx/zynqmp.c @@ -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, }; /** diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx-zynqmp.h index 015e130..7a9db08 100644 --- a/include/linux/firmware/xlnx-zynqmp.h +++ b/include/linux/firmware/xlnx-zynqmp.h @@ -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) -- 2.7.4