RE: [PATCH v2 09/11] firmware: xilinx: Add SDIO Tap Delay APIs
Hi Jolly,
> -Original Message-
> From: Jolly Shah
> Sent: Monday, July 1, 2019 11:36 PM
> To: Manish Narani ; ulf.hans...@linaro.org;
> robh...@kernel.org; mark.rutl...@arm.com; he...@sntech.de; Michal Simek
> ; adrian.hun...@intel.com;
> christoph.muell...@theobroma-systems.com; philipp.tomsich@theobroma-
> systems.com; viresh.ku...@linaro.org; scott.bran...@broadcom.com;
> ay...@soulik.info; ker...@esmil.dk; tony@rock-chips.com; Rajan Vaja
> ; Nava kishore Manne ;
> m...@kernel.org; Manish Narani ; o...@lixom.net
> Cc: linux-...@vger.kernel.org; devicet...@vger.kernel.org; linux-
> ker...@vger.kernel.org; linux-arm-ker...@lists.infradead.org; linux-
> rockc...@lists.infradead.org
> Subject: RE: [PATCH v2 09/11] firmware: xilinx: Add SDIO Tap Delay APIs
>
> Hi Manish,
>
> > -Original Message-
> > From: Manish Narani
> > Sent: Sunday, June 30, 2019 10:30 PM
> > To: ulf.hans...@linaro.org; robh...@kernel.org; mark.rutl...@arm.com;
> > he...@sntech.de; Michal Simek ;
> > adrian.hun...@intel.com; christoph.muell...@theobroma-systems.com;
> > philipp.toms...@theobroma-systems.com; viresh.ku...@linaro.org;
> > scott.bran...@broadcom.com; ay...@soulik.info; ker...@esmil.dk;
> > tony@rock-chips.com; Rajan Vaja ; Jolly Shah
> > ; Nava kishore Manne ;
> > m...@kernel.org; Manish Narani ; o...@lixom.net
> > Cc: linux-...@vger.kernel.org; devicet...@vger.kernel.org; linux-
> > ker...@vger.kernel.org; linux-arm-ker...@lists.infradead.org; linux-
> > rockc...@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
> > ---
> > 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.
Yes, I am making these eemi APIs and calling ioctl API from these. This is to
make the SD driver code more readable.
Thanks,
Manish
RE: [PATCH v2 09/11] firmware: xilinx: Add SDIO Tap Delay APIs
Hi Manish,
> -Original Message-
> From: Manish Narani
> Sent: Sunday, June 30, 2019 10:30 PM
> To: ulf.hans...@linaro.org; robh...@kernel.org; mark.rutl...@arm.com;
> he...@sntech.de; Michal Simek ;
> adrian.hun...@intel.com; christoph.muell...@theobroma-systems.com;
> philipp.toms...@theobroma-systems.com; viresh.ku...@linaro.org;
> scott.bran...@broadcom.com; ay...@soulik.info; ker...@esmil.dk;
> tony@rock-chips.com; Rajan Vaja ; Jolly Shah
> ; Nava kishore Manne ;
> m...@kernel.org; Manish Narani ; o...@lixom.net
> Cc: linux-...@vger.kernel.org; devicet...@vger.kernel.org; linux-
> ker...@vger.kernel.org; linux-arm-ker...@lists.infradead.org; linux-
> rockc...@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
> ---
> 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
