Messages in this thread | | | From | Jolly Shah <> | Subject | RE: [PATCH v2 09/11] firmware: xilinx: Add SDIO Tap Delay APIs | Date | Mon, 1 Jul 2019 18:06:19 +0000 |
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Hi Manish,
> -----Original Message----- > From: Manish Narani <manish.narani@xilinx.com> > Sent: Sunday, June 30, 2019 10:30 PM > To: ulf.hansson@linaro.org; robh+dt@kernel.org; mark.rutland@arm.com; > heiko@sntech.de; Michal Simek <michals@xilinx.com>; > adrian.hunter@intel.com; christoph.muellner@theobroma-systems.com; > philipp.tomsich@theobroma-systems.com; viresh.kumar@linaro.org; > scott.branden@broadcom.com; ayaka@soulik.info; kernel@esmil.dk; > tony.xie@rock-chips.com; Rajan Vaja <RAJANV@xilinx.com>; Jolly Shah > <JOLLYS@xilinx.com>; Nava kishore Manne <navam@xilinx.com>; > mdf@kernel.org; Manish Narani <MNARANI@xilinx.com>; olof@lixom.net > Cc: linux-mmc@vger.kernel.org; devicetree@vger.kernel.org; linux- > kernel@vger.kernel.org; linux-arm-kernel@lists.infradead.org; linux- > rockchip@lists.infradead.org > Subject: [PATCH v2 09/11] firmware: xilinx: Add SDIO Tap Delay APIs > > Add APIs for setting SDIO Tap Delays on ZynqMP platform. > > Signed-off-by: Manish Narani <manish.narani@xilinx.com> > --- > drivers/firmware/xilinx/zynqmp.c | 48 > ++++++++++++++++++++++++++++++++++++ > include/linux/firmware/xlnx-zynqmp.h | 15 ++++++++++- > 2 files changed, 62 insertions(+), 1 deletion(-) > > diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c > index fd3d837..b81f1be 100644 > --- a/drivers/firmware/xilinx/zynqmp.c > +++ b/drivers/firmware/xilinx/zynqmp.c > @@ -664,6 +664,52 @@ static int zynqmp_pm_set_requirement(const u32 > node, const u32 capabilities, > qos, ack, NULL); > } > > +/** > + * zynqmp_pm_sdio_out_setphase() - PM call to set clock output delays for SD > + * @device_id: Device ID of the SD controller > + * @tap_delay: Tap Delay value for output clock > + * > + * This API function is to be used for setting the clock output delays for SD > + * clock. > + * > + * Return: Returns status, either success or error+reason > + */ > +static int zynqmp_pm_sdio_out_setphase(u32 device_id, u8 tap_delay) > +{ > + u32 node_id = (!device_id) ? NODE_SD_0 : NODE_SD_1; > + int ret; > + > + ret = zynqmp_pm_ioctl(node_id, IOCTL_SET_SD_TAPDELAY, > + PM_TAPDELAY_OUTPUT, tap_delay, NULL); > + if (ret) > + pr_err("Error setting Output Tap Delay\n"); > + > + return ret; > +} > + > +/** > + * zynqmp_pm_sdio_in_setphase() - PM call to set clock input delays for SD > + * @device_id: Device ID of the SD controller > + * @tap_delay: Tap Delay value for input clock > + * > + * This API function is to be used for setting the clock input delays for SD > + * clock. > + * > + * Return: Returns status, either success or error+reason > + */ > +static int zynqmp_pm_sdio_in_setphase(u32 device_id, u8 tap_delay) > +{ > + u32 node_id = (!device_id) ? NODE_SD_0 : NODE_SD_1; > + int ret; > + > + ret = zynqmp_pm_ioctl(node_id, IOCTL_SET_SD_TAPDELAY, > + PM_TAPDELAY_INPUT, tap_delay, NULL); > + if (ret) > + pr_err("Error setting Input Tap Delay\n"); > + > + return ret; > +} > + > static const struct zynqmp_eemi_ops eemi_ops = { > .get_api_version = zynqmp_pm_get_api_version, > .get_chipid = zynqmp_pm_get_chipid, > @@ -687,6 +733,8 @@ static const struct zynqmp_eemi_ops eemi_ops = { > .set_requirement = zynqmp_pm_set_requirement, > .fpga_load = zynqmp_pm_fpga_load, > .fpga_get_status = zynqmp_pm_fpga_get_status, > + .sdio_out_setphase = zynqmp_pm_sdio_out_setphase, > + .sdio_in_setphase = zynqmp_pm_sdio_in_setphase,
Are these eemi APIs? You are using ioctl eemi api to set the delay.
Thanks, Jolly Shah
> }; > > /** > diff --git a/include/linux/firmware/xlnx-zynqmp.h b/include/linux/firmware/xlnx- > zynqmp.h > index 1262ea6..d9b53e5 100644 > --- a/include/linux/firmware/xlnx-zynqmp.h > +++ b/include/linux/firmware/xlnx-zynqmp.h > @@ -92,7 +92,8 @@ enum pm_ret_status { > }; > > enum pm_ioctl_id { > - IOCTL_SET_PLL_FRAC_MODE = 8, > + IOCTL_SET_SD_TAPDELAY = 7, > + IOCTL_SET_PLL_FRAC_MODE, > IOCTL_GET_PLL_FRAC_MODE, > IOCTL_SET_PLL_FRAC_DATA, > IOCTL_GET_PLL_FRAC_DATA, > @@ -251,6 +252,16 @@ enum zynqmp_pm_request_ack { > ZYNQMP_PM_REQUEST_ACK_NON_BLOCKING, > }; > > +enum pm_node_id { > + NODE_SD_0 = 39, > + NODE_SD_1, > +}; > + > +enum tap_delay_type { > + PM_TAPDELAY_INPUT = 0, > + PM_TAPDELAY_OUTPUT, > +}; > + > /** > * struct zynqmp_pm_query_data - PM query data > * @qid: query ID > @@ -295,6 +306,8 @@ struct zynqmp_eemi_ops { > const u32 capabilities, > const u32 qos, > const enum zynqmp_pm_request_ack ack); > + int (*sdio_out_setphase)(u32 device_id, u8 tap_delay); > + int (*sdio_in_setphase)(u32 device_id, u8 tap_delay); > }; > > int zynqmp_pm_invoke_fn(u32 pm_api_id, u32 arg0, u32 arg1, > -- > 2.1.1
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