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usb: dwc2: Move parameter initialization into params.c 

Consolidate and move all the parameter initialization code from the
probe function to params.c.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
John Youn 2016-11-03 17:55:55 -07:00 committed by Felipe Balbi
parent bea8e86c51
commit 334bbd4ebe
3 changed files with 36 additions and 23 deletions
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3
drivers/usb/dwc2/core.h
View File

@ -1259,6 +1259,9 @@ extern int dwc2_get_hwparams(struct dwc2_hsotg *hsotg);
extern int dwc2_lowlevel_hw_enable(struct dwc2_hsotg *hsotg);
extern int dwc2_lowlevel_hw_disable(struct dwc2_hsotg *hsotg);
/* Parameters */
int dwc2_init_params(struct dwc2_hsotg *hsotg);
/*
* The following functions check the controller's OTG operation mode
* capability (GHWCFG2.OTG_MODE).

29
drivers/usb/dwc2/params.c
View File

@ -1123,3 +1123,32 @@ void dwc2_set_all_params(struct dwc2_core_params *params, int value)
for (i = 0; i < size; i++)
p[i] = value;
}
int dwc2_init_params(struct dwc2_hsotg *hsotg)
{
const struct of_device_id *match;
const struct dwc2_core_params *params;
struct dwc2_core_params defparams;
match = of_match_device(dwc2_of_match_table, hsotg->dev);
if (match && match->data) {
params = match->data;
} else {
/* Default all params to autodetect */
dwc2_set_all_params(&defparams, -1);
params = &defparams;
/*
* Disable descriptor dma mode by default as the HW can support
* it, but does not support it for SPLIT transactions.
* Disable it for FS devices as well.
*/
defparams.dma_desc_enable = 0;
defparams.dma_desc_fs_enable = 0;
}
/* Validate parameter values */
dwc2_set_parameters(hsotg, params);
return 0;
}

27
drivers/usb/dwc2/platform.c
View File

@ -365,30 +365,10 @@ static void dwc2_driver_shutdown(struct platform_device *dev)
*/
static int dwc2_driver_probe(struct platform_device *dev)
{
const struct of_device_id *match;
const struct dwc2_core_params *params;
struct dwc2_core_params defparams;
struct dwc2_hsotg *hsotg;
struct resource *res;
int retval;
match = of_match_device(dwc2_of_match_table, &dev->dev);
if (match && match->data) {
params = match->data;
} else {
/* Default all params to autodetect */
dwc2_set_all_params(&defparams, -1);
params = &defparams;
/*
* Disable descriptor dma mode by default as the HW can support
* it, but does not support it for SPLIT transactions.
* Disable it for FS devices as well.
*/
defparams.dma_desc_enable = 0;
defparams.dma_desc_fs_enable = 0;
}
hsotg = devm_kzalloc(&dev->dev, sizeof(*hsotg), GFP_KERNEL);
if (!hsotg)
return -ENOMEM;
@ -453,11 +433,12 @@ static int dwc2_driver_probe(struct platform_device *dev)
if (retval)
goto error;
/* Validate parameter values */
dwc2_set_parameters(hsotg, params);
dwc2_force_dr_mode(hsotg);
retval = dwc2_init_params(hsotg);
if (retval)
goto error;
if (hsotg->dr_mode != USB_DR_MODE_HOST) {
retval = dwc2_gadget_init(hsotg, hsotg->irq);
if (retval)