[U-Boot] [u-boot 21/40] dwc3: core: change probe and remove to uboot init and uboot exit code

[Lukasz Majewski <l.majewski@samsung.com>]

Hi Kishon,

> Removed probe and remove that are specific to linux and replaced it
> with uboot init and uboot exit. These functions will be invoked from
> boardfile.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
> ---
>  drivers/usb/dwc3/core.c |  218
> +++++++++++------------------------------------ 1 file changed, 52
> insertions(+), 166 deletions(-)
> 
> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
> index 78322b7..58c3bfd 100644
> --- a/drivers/usb/dwc3/core.c
> +++ b/drivers/usb/dwc3/core.c
> @@ -16,6 +16,7 @@
>  
>  #include <common.h>
>  #include <malloc.h>
> +#include <dwc3-uboot.h>
>  #include <asm/dma-mapping.h>
>  #include <linux/ioport.h>
>  
> @@ -28,6 +29,7 @@
>  
>  #include "linux-compat.h"
>  
> +struct dwc3 *dwc;
>  /*
> --------------------------------------------------------------------------
> */ void dwc3_set_mode(struct dwc3 *dwc, u32 mode)
> @@ -597,20 +599,26 @@ static void dwc3_core_exit_mode(struct dwc3
> *dwc) 
>  #define DWC3_ALIGN_MASK		(16 - 1)
>  
> -static int dwc3_probe(struct platform_device *pdev)
> +/**
> + * dwc3_uboot_init - dwc3 core uboot initialization code
> + * @dwc3_dev: struct dwc3_device containing initialization data
> + *
> + * Entry point for dwc3 driver (equivalent to dwc3_probe in linux
> + * kernel driver). Pointer to dwc3_device should be passed containing
> + * base address and other initialization data. Returns '0' on
> success and
> + * a negative value on failure.
> + *
> + * Generally called from board_usb_init() implemented in board file.
> + */
> +int dwc3_uboot_init(struct dwc3_device *dwc3_dev)
>  {
> -	struct device		*dev = &pdev->dev;
> -	struct dwc3_platform_data *pdata = dev_get_platdata(dev);
> -	struct device_node	*node = dev->of_node;
> -	struct resource		*res;
> -	struct dwc3		*dwc;
> +	struct device		*dev;
>  	u8			lpm_nyet_threshold;
>  	u8			tx_de_emphasis;
>  	u8			hird_threshold;
>  
>  	int			ret;
>  
> -	void __iomem		*regs;
>  	void			*mem;
>  
>  	mem = devm_kzalloc(dev, sizeof(*dwc) + DWC3_ALIGN_MASK,
> GFP_KERNEL); @@ -619,48 +627,8 @@ static int dwc3_probe(struct
> platform_device *pdev) 
>  	dwc = PTR_ALIGN(mem, DWC3_ALIGN_MASK + 1);
>  	dwc->mem = mem;
> -	dwc->dev = dev;
> -
> -	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
> -	if (!res) {
> -		dev_err(dev, "missing IRQ\n");
> -		return -ENODEV;
> -	}
> -	dwc->xhci_resources[1].start = res->start;
> -	dwc->xhci_resources[1].end = res->end;
> -	dwc->xhci_resources[1].flags = res->flags;
> -	dwc->xhci_resources[1].name = res->name;
> -
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	if (!res) {
> -		dev_err(dev, "missing memory resource\n");
> -		return -ENODEV;
> -	}
>  
> -	dwc->xhci_resources[0].start = res->start;
> -	dwc->xhci_resources[0].end = dwc->xhci_resources[0].start +
> -					DWC3_XHCI_REGS_END;
> -	dwc->xhci_resources[0].flags = res->flags;
> -	dwc->xhci_resources[0].name = res->name;
> -
> -	res->start += DWC3_GLOBALS_REGS_START;
> -
> -	/*
> -	 * Request memory region but exclude xHCI regs,
> -	 * since it will be requested by the xhci-plat driver.
> -	 */
> -	regs = devm_ioremap_resource(dev, res);
> -	if (IS_ERR(regs))
> -		return PTR_ERR(regs);
> -
> -	dwc->regs	= regs;
> -	dwc->regs_size	= resource_size(res);
> -	/*
> -	 * restore res->start back to its original value so that,
> -	 * in case the probe is deferred, we don't end up getting
> error in
> -	 * request the memory region the next time probe is called.
> -	 */
> -	res->start -= DWC3_GLOBALS_REGS_START;
> +	dwc->regs	= (int *)(dwc3_dev->base +
> DWC3_GLOBALS_REGS_START); 
>  	/* default to highest possible threshold */
>  	lpm_nyet_threshold = 0xff;
> @@ -674,73 +642,31 @@ static int dwc3_probe(struct platform_device
> *pdev) */
>  	hird_threshold = 12;
>  
> -	if (node) {
> -		dwc->maximum_speed = of_usb_get_maximum_speed(node);
> -		dwc->has_lpm_erratum = of_property_read_bool(node,
> -				"snps,has-lpm-erratum");
> -		of_property_read_u8(node, "snps,lpm-nyet-threshold",
> -				&lpm_nyet_threshold);
> -		dwc->is_utmi_l1_suspend = of_property_read_bool(node,
> -				"snps,is-utmi-l1-suspend");
> -		of_property_read_u8(node, "snps,hird-threshold",
> -				&hird_threshold);
> -
> -		dwc->needs_fifo_resize = of_property_read_bool(node,
> -				"tx-fifo-resize");
> -		dwc->dr_mode = of_usb_get_dr_mode(node);
> -
> -		dwc->disable_scramble_quirk =
> of_property_read_bool(node,
> -				"snps,disable_scramble_quirk");
> -		dwc->u2exit_lfps_quirk = of_property_read_bool(node,
> -				"snps,u2exit_lfps_quirk");
> -		dwc->u2ss_inp3_quirk = of_property_read_bool(node,
> -				"snps,u2ss_inp3_quirk");
> -		dwc->req_p1p2p3_quirk = of_property_read_bool(node,
> -				"snps,req_p1p2p3_quirk");
> -		dwc->del_p1p2p3_quirk = of_property_read_bool(node,
> -				"snps,del_p1p2p3_quirk");
> -		dwc->del_phy_power_chg_quirk =
> of_property_read_bool(node,
> -				"snps,del_phy_power_chg_quirk");
> -		dwc->lfps_filter_quirk = of_property_read_bool(node,
> -				"snps,lfps_filter_quirk");
> -		dwc->rx_detect_poll_quirk =
> of_property_read_bool(node,
> -				"snps,rx_detect_poll_quirk");
> -		dwc->dis_u3_susphy_quirk =
> of_property_read_bool(node,
> -				"snps,dis_u3_susphy_quirk");
> -		dwc->dis_u2_susphy_quirk =
> of_property_read_bool(node,
> -				"snps,dis_u2_susphy_quirk");
> -
> -		dwc->tx_de_emphasis_quirk =
> of_property_read_bool(node,
> -				"snps,tx_de_emphasis_quirk");
> -		of_property_read_u8(node, "snps,tx_de_emphasis",
> -				&tx_de_emphasis);
> -	} else if (pdata) {
> -		dwc->maximum_speed = pdata->maximum_speed;
> -		dwc->has_lpm_erratum = pdata->has_lpm_erratum;
> -		if (pdata->lpm_nyet_threshold)
> -			lpm_nyet_threshold =
> pdata->lpm_nyet_threshold;
> -		dwc->is_utmi_l1_suspend = pdata->is_utmi_l1_suspend;
> -		if (pdata->hird_threshold)
> -			hird_threshold = pdata->hird_threshold;
> -
> -		dwc->needs_fifo_resize = pdata->tx_fifo_resize;
> -		dwc->dr_mode = pdata->dr_mode;
> -
> -		dwc->disable_scramble_quirk =
> pdata->disable_scramble_quirk;
> -		dwc->u2exit_lfps_quirk = pdata->u2exit_lfps_quirk;
> -		dwc->u2ss_inp3_quirk = pdata->u2ss_inp3_quirk;
> -		dwc->req_p1p2p3_quirk = pdata->req_p1p2p3_quirk;
> -		dwc->del_p1p2p3_quirk = pdata->del_p1p2p3_quirk;
> -		dwc->del_phy_power_chg_quirk =
> pdata->del_phy_power_chg_quirk;
> -		dwc->lfps_filter_quirk = pdata->lfps_filter_quirk;
> -		dwc->rx_detect_poll_quirk =
> pdata->rx_detect_poll_quirk;
> -		dwc->dis_u3_susphy_quirk =
> pdata->dis_u3_susphy_quirk;
> -		dwc->dis_u2_susphy_quirk =
> pdata->dis_u2_susphy_quirk; -
> -		dwc->tx_de_emphasis_quirk =
> pdata->tx_de_emphasis_quirk;
> -		if (pdata->tx_de_emphasis)
> -			tx_de_emphasis = pdata->tx_de_emphasis;
> -	}
> +	dwc->maximum_speed = dwc3_dev->maximum_speed;
> +	dwc->has_lpm_erratum = dwc3_dev->has_lpm_erratum;
> +	if (dwc3_dev->lpm_nyet_threshold)
> +		lpm_nyet_threshold = dwc3_dev->lpm_nyet_threshold;
> +	dwc->is_utmi_l1_suspend = dwc3_dev->is_utmi_l1_suspend;
> +	if (dwc3_dev->hird_threshold)
> +		hird_threshold = dwc3_dev->hird_threshold;
> +
> +	dwc->needs_fifo_resize = dwc3_dev->tx_fifo_resize;
> +	dwc->dr_mode = dwc3_dev->dr_mode;
> +
> +	dwc->disable_scramble_quirk =
> dwc3_dev->disable_scramble_quirk;
> +	dwc->u2exit_lfps_quirk = dwc3_dev->u2exit_lfps_quirk;
> +	dwc->u2ss_inp3_quirk = dwc3_dev->u2ss_inp3_quirk;
> +	dwc->req_p1p2p3_quirk = dwc3_dev->req_p1p2p3_quirk;
> +	dwc->del_p1p2p3_quirk = dwc3_dev->del_p1p2p3_quirk;
> +	dwc->del_phy_power_chg_quirk =
> dwc3_dev->del_phy_power_chg_quirk;
> +	dwc->lfps_filter_quirk = dwc3_dev->lfps_filter_quirk;
> +	dwc->rx_detect_poll_quirk = dwc3_dev->rx_detect_poll_quirk;
> +	dwc->dis_u3_susphy_quirk = dwc3_dev->dis_u3_susphy_quirk;
> +	dwc->dis_u2_susphy_quirk = dwc3_dev->dis_u2_susphy_quirk;
> +
> +	dwc->tx_de_emphasis_quirk = dwc3_dev->tx_de_emphasis_quirk;
> +	if (dwc3_dev->tx_de_emphasis)
> +		tx_de_emphasis = dwc3_dev->tx_de_emphasis;
>  
>  	/* default to superspeed if no maximum_speed passed */
>  	if (dwc->maximum_speed == USB_SPEED_UNKNOWN)
> @@ -752,15 +678,6 @@ static int dwc3_probe(struct platform_device
> *pdev) dwc->hird_threshold = hird_threshold
>  		| (dwc->is_utmi_l1_suspend << 4);
>  
> -	spin_lock_init(&dwc->lock);
> -	platform_set_drvdata(pdev, dwc);
> -
> -	if (!dev->dma_mask) {
> -		dev->dma_mask = dev->parent->dma_mask;
> -		dev->dma_parms = dev->parent->dma_parms;
> -		dma_set_coherent_mask(dev,
> dev->parent->coherent_dma_mask);
> -	}
> -
>  	dwc3_cache_hwparams(dwc);
>  
>  	ret = dwc3_alloc_event_buffers(dwc, DWC3_EVENT_BUFFERS_SIZE);
> @@ -807,55 +724,24 @@ err0:
>  	return ret;
>  }
>  
> -static int dwc3_remove(struct platform_device *pdev)
> +/**
> + * dwc3_uboot_exit - dwc3 core uboot cleanup code
> + * @index: index of this controller
> + *
> + * Performs cleanup of memory allocated in dwc3_uboot_init and other
> misc
> + * cleanups (equivalent to dwc3_remove in linux).
> + *
> + * Generally called from board file.
> + */
> +void dwc3_uboot_exit()
>  {
> -	struct dwc3	*dwc = platform_get_drvdata(pdev);
> -
>  	dwc3_core_exit_mode(dwc);
>  	dwc3_event_buffers_cleanup(dwc);
>  	dwc3_free_event_buffers(dwc);
> -
>  	dwc3_core_exit(dwc);
> -
> -	return 0;
> +	kfree(dwc->mem);
>  }
>  
> -#ifdef CONFIG_OF
> -static const struct of_device_id of_dwc3_match[] = {
> -	{
> -		.compatible = "snps,dwc3"
> -	},
> -	{
> -		.compatible = "synopsys,dwc3"
> -	},
> -	{ },
> -};
> -MODULE_DEVICE_TABLE(of, of_dwc3_match);
> -#endif
> -
> -#ifdef CONFIG_ACPI
> -
> -#define ACPI_ID_INTEL_BSW	"808622B7"
> -
> -static const struct acpi_device_id dwc3_acpi_match[] = {
> -	{ ACPI_ID_INTEL_BSW, 0 },
> -	{ },
> -};
> -MODULE_DEVICE_TABLE(acpi, dwc3_acpi_match);
> -#endif
> -
> -static struct platform_driver dwc3_driver = {
> -	.probe		= dwc3_probe,
> -	.remove		= dwc3_remove,
> -	.driver		= {
> -		.name	= "dwc3",
> -		.of_match_table	= of_match_ptr(of_dwc3_match),
> -		.acpi_match_table = ACPI_PTR(dwc3_acpi_match),
> -	},
> -};
> -
> -module_platform_driver(dwc3_driver);
> -
>  MODULE_ALIAS("platform:dwc3");
>  MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
>  MODULE_LICENSE("GPL v2");

Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>

-- 
Best regards,

Lukasz Majewski

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