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usb: gadget: s3c-hsotg: get phy bus width from phy subsystem

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Adds support for querying the phy bus width from the generic phy
subsystem. Configure UTMI bus width in GUSBCFG based on this value.

Signed-off-by: Matt Porter <mporter@linaro.org>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Matt Porter 2013-12-19 09:23:07 -05:00 committed by Felipe Balbi
parent 74084844e8
commit f7e504c72d
2 changed files with 14 additions and 1 deletions
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14
drivers/usb/gadget/s3c-hsotg.c
View file

@ -146,6 +146,7 @@ struct s3c_hsotg_ep {
* @regs: The memory area mapped for accessing registers.
* @irq: The IRQ number we are using
* @supplies: Definition of USB power supplies
* @phyif: PHY interface width
* @dedicated_fifos: Set if the hardware has dedicated IN-EP fifos.
* @num_of_eps: Number of available EPs (excluding EP0)
* @debug_root: root directrory for debugfs.
@ -174,6 +175,7 @@ struct s3c_hsotg {
struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsotg_supply_names)];
u32 phyif;
unsigned int dedicated_fifos:1;
unsigned char num_of_eps;
@ -2288,7 +2290,7 @@ static void s3c_hsotg_core_init(struct s3c_hsotg *hsotg)
*/
/* set the PLL on, remove the HNP/SRP and set the PHY */
writel(GUSBCFG_PHYIf16 | GUSBCFG_TOutCal(7) |
writel(hsotg->phyif | GUSBCFG_TOutCal(7) |
(0x5 << 10), hsotg->regs + GUSBCFG);
s3c_hsotg_init_fifo(hsotg);
@ -3646,6 +3648,16 @@ static int s3c_hsotg_probe(struct platform_device *pdev)
goto err_supplies;
}
/* Set default UTMI width */
hsotg->phyif = GUSBCFG_PHYIf16;
/*
* If using the generic PHY framework, check if the PHY bus
* width is 8-bit and set the phyif appropriately.
*/
if (hsotg->phy && (phy_get_bus_width(phy) == 8))
hsotg->phyif = GUSBCFG_PHYIf8;
if (hsotg->phy)
phy_init(hsotg->phy);

1
drivers/usb/gadget/s3c-hsotg.h
View file

@ -55,6 +55,7 @@
#define GUSBCFG_HNPCap (1 << 9)
#define GUSBCFG_SRPCap (1 << 8)
#define GUSBCFG_PHYIf16 (1 << 3)
#define GUSBCFG_PHYIf8 (0 << 3)
#define GUSBCFG_TOutCal_MASK (0x7 << 0)
#define GUSBCFG_TOutCal_SHIFT (0)
#define GUSBCFG_TOutCal_LIMIT (0x7)