Re: [PATCH 2/3] usb: dwc3: pci: use build-in properties instead of platform data

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Hi,

Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> writes:
> This should allow the core driver to drop handling of
> platform data and expect the platform specific details to
> always come from properties.
>
> Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
> Cc: Huang Rui <ray.huang@xxxxxxx>
> CC: John Youn <John.Youn@xxxxxxxxxxxx>
> ---
>  drivers/usb/dwc3/dwc3-pci.c | 81 +++++++++++++++++++++++----------------------
>  1 file changed, 41 insertions(+), 40 deletions(-)
>
> diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
> index 23d4f10..ff6488a 100644
> --- a/drivers/usb/dwc3/dwc3-pci.c
> +++ b/drivers/usb/dwc3/dwc3-pci.c
> @@ -23,8 +23,7 @@
>  #include <linux/platform_device.h>
>  #include <linux/gpio/consumer.h>
>  #include <linux/acpi.h>
> -
> -#include "platform_data.h"
> +#include <linux/delay.h>
>  
>  #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3		0xabcd
>  #define PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI	0xabce
> @@ -46,38 +45,42 @@ static const struct acpi_gpio_mapping acpi_dwc3_byt_gpios[] = {
>  	{ },
>  };
>  
> +static inline int
> +dwc3_pci_add_pset(struct platform_device *dwc3, struct property_entry *ent)
> +{
> +	struct property_set pset;
> +
> +	pset.properties = ent;
> +	return platform_device_add_properties(dwc3, &pset);
> +}
> +
>  static int dwc3_pci_quirks(struct pci_dev *pdev)
>  {
>  	if (pdev->vendor == PCI_VENDOR_ID_AMD &&
>  	    pdev->device == PCI_DEVICE_ID_AMD_NL_USB) {
> -		struct dwc3_platform_data pdata;
> -
> -		memset(&pdata, 0, sizeof(pdata));
> -
> -		pdata.has_lpm_erratum = true;
> -		pdata.lpm_nyet_threshold = 0xf;
> -
> -		pdata.u2exit_lfps_quirk = true;
> -		pdata.u2ss_inp3_quirk = true;
> -		pdata.req_p1p2p3_quirk = true;
> -		pdata.del_p1p2p3_quirk = true;
> -		pdata.del_phy_power_chg_quirk = true;
> -		pdata.lfps_filter_quirk = true;
> -		pdata.rx_detect_poll_quirk = true;
> -
> -		pdata.tx_de_emphasis_quirk = true;
> -		pdata.tx_de_emphasis = 1;
> -
> -		/*
> -		 * FIXME these quirks should be removed when AMD NL
> -		 * taps out
> -		 */
> -		pdata.disable_scramble_quirk = true;
> -		pdata.dis_u3_susphy_quirk = true;
> -		pdata.dis_u2_susphy_quirk = true;
> -
> -		return platform_device_add_data(pci_get_drvdata(pdev), &pdata,
> -						sizeof(pdata));
> +		struct property_entry pentry[] = {
> +			PROPERTY_ENTRY_BOOL("snps,has-lpm-erratum"),
> +			PROPERTY_ENTRY_U8("snps,lpm-nyet-threshold", 0xf),
> +			PROPERTY_ENTRY_BOOL("snps,u2exit_lfps_quirk"),
> +			PROPERTY_ENTRY_BOOL("snps,u2ss_inp3_quirk"),
> +			PROPERTY_ENTRY_BOOL("snps,req_p1p2p3_quirk"),
> +			PROPERTY_ENTRY_BOOL("snps,del_p1p2p3_quirk"),
> +			PROPERTY_ENTRY_BOOL("snps,del_phy_power_chg_quirk"),
> +			PROPERTY_ENTRY_BOOL("snps ,lfps_filter_quirk"),
> +			PROPERTY_ENTRY_BOOL("snps,rx_detect_poll_quirk"),
> +			PROPERTY_ENTRY_BOOL("snps,tx_de_emphasis_quirk"),
> +			PROPERTY_ENTRY_U8("snps,tx_de_emphasis", 1),
> +			/*
> +			 * FIXME these quirks should be removed when AMD NL
> +			 * taps out

while at that, do you mind fixing this typo here (taps -> tapes) ?
Another thing, it looks like we're DT-fying ACPI. Is this what's
happening here ? All DT properties will also become ACPI properties, or
is this kernel-only knowledge ?

-- 
balbi

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