[U-Boot] [PATCH] usb: adjust Efika USB code to generic ULPI framework

[Marek Vasut <marek.vasut@gmail.com>]

> This patch changes Efika USB support code to use generic ULPI
> implementation instead of driver's own.

The patchset for efika wasn't mainlined yet, please reintegrate and resubmit the 
whole thing.

> 
> Signed-off-by: Jana Rapava <fermata7@gmail.com>
> Cc: Marek Vasut <marek.vasut@gmail.com>
> Cc: Remy Bohmer <linux@bohmer.net>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> ---
>  board/efikamx/efikamx-usb.c |  105
> +++++-------------------------------------- include/configs/efikamx.h   | 
>   1 +
>  2 files changed, 13 insertions(+), 93 deletions(-)
> 
> diff --git a/board/efikamx/efikamx-usb.c b/board/efikamx/efikamx-usb.c
> index 3b42256..2a0341f 100644
> --- a/board/efikamx/efikamx-usb.c
> +++ b/board/efikamx/efikamx-usb.c
> @@ -205,104 +205,21 @@ void control_regs_setup(struct mx5_usb_control_regs
> *control) udelay(10000);
>  }
> 
> -#define ULPI_ADDR_SHIFT		16
> -#define ulpi_write_mask(value)	((value) & 0xff)
> -#define ulpi_read_mask(value)	(((value) >> 8) & 0xff)
> -
> -int ulpi_wait(struct usb_ehci *ehci, u32 ulpi_value, u32 ulpi_mask)
> +void ulpi_set_flags(struct usb_ehci *ehci, struct ulpi_regs *ulpi)
>  {
> -	int timeout = ULPI_TIMEOUT;
> -	u32 tmp;
> -
> -	writel(ulpi_value, &ehci->ulpi_viewpoint);
> -
> -	/* Wait for the bits in ulpi_mask to become zero. */
> -	while (--timeout) {
> -		tmp = readl(&ehci->ulpi_viewpoint);
> -		if (!(tmp & ulpi_mask))
> -			break;
> -		WATCHDOG_RESET();
> -	}
> -
> -	return !timeout;
> -}
> -
> -int ulpi_wakeup(struct usb_ehci *ehci)
> -{
> -	if (readl(&ehci->ulpi_viewpoint) & ULPI_SS)
> -		return 0; /* already awake */
> -	return ulpi_wait(ehci, ULPI_WU, ULPI_WU);
> -}
> -
> -void ulpi_write(struct usb_ehci *ehci, u32 reg, u32 value)
> -{
> -	u32 tmp;
> -	if (ulpi_wakeup(ehci)) {
> -		printf("ULPI wakeup timed out\n");
> -		return;
> -	}
> -
> -	tmp = ulpi_wait(ehci, ULPI_RWRUN | ULPI_RWCTRL |
> -		reg << ULPI_ADDR_SHIFT | ulpi_write_mask(value), ULPI_RWRUN);
> -	if (tmp)
> -		printf("ULPI write timed out\n");
> -}
> -
> -u32 ulpi_read(struct usb_ehci *ehci, u32 reg)
> -{
> -	if (ulpi_wakeup(ehci)) {
> -		printf("ULPI wakeup timed out\n");
> -		return 0;
> -	}
> -
> -	if (ulpi_wait(ehci, ULPI_RWRUN | reg << ULPI_ADDR_SHIFT, ULPI_RWRUN)) {
> -		printf("ULPI read timed out\n");
> -		return 0;
> -	}
> -
> -	return ulpi_read_mask(readl(&ehci->ulpi_viewpoint));
> -}
> -
> -void ulpi_init(struct usb_ehci *ehci, struct ulpi_regs *ulpi)
> -{
> -	u32 tmp = 0;
> -	int reg, i;
> -
> -	/* Assemble ID from four ULPI ID registers (8 bits each). */
> -	for (reg = ULPI_ID_REGS_COUNT - 1; reg >= 0; reg--)
> -		tmp |= ulpi_read(ehci, reg) << (reg * 8);
> -
> -	/* Split ID into vendor and product ID. */
> -	debug("Found ULPI TX, ID %04x:%04x\n", tmp >> 16, tmp & 0xffff);
> -
> -	/* ULPI integrity check */
> -	for (i = 0; i < 2; i++) {
> -		ulpi_write(ehci, (u32)&ulpi->scratch_write,
> -			ULPI_TEST_VALUE << i);
> -		tmp = ulpi_read(ehci, (u32)&ulpi->scratch_write);
> -
> -		if (tmp != (ULPI_TEST_VALUE << i)) {
> -			printf("ULPI integrity check failed\n");
> -			return;
> -		}
> -	}
> -
> -	/* Set ULPI flags. */
> -	ulpi_write(ehci, (u32)&ulpi->otg_ctrl_write,
> -		ULPI_OTG_EXTVBUSIND |
> +	ulpi_otg_ctrl_flags(ehci, ulpi, WRITE, ULPI_OTG_EXTVBUSIND |
>  		ULPI_OTG_DM_PULLDOWN | ULPI_OTG_DP_PULLDOWN);
> -	ulpi_write(ehci, (u32)&ulpi->function_ctrl_write,
> -		ULPI_FC_XCVRSEL | ULPI_FC_OPMODE_NORMAL |
> -		ULPI_FC_SUSPENDM);
> -	ulpi_write(ehci, (u32)&ulpi->iface_ctrl_write, 0);
> -	ulpi_write(ehci, (u32)&ulpi->otg_ctrl_set,
> -		ULPI_OTG_DRVVBUS | ULPI_OTG_DRVVBUS_EXT);
> +	ulpi_function_ctrl_flags(ehci, ulpi, WRITE, ULPI_FC_XCVRSEL |
> +		ULPI_FC_OPMODE_NORMAL | ULPI_FC_SUSPENDM);
> +	ulpi_iface_ctrl_flags(ehci, ulpi, WRITE, 0);
> 
>  	/*
> -	 * NOTE: This violates USB specification, but otherwise, USB on Efika
> -	 * doesn't charge VBUS and as a result, USB doesn't work.
> +	 * NOTE: Setting ULPI_OTG_CHRGVBUS violates USB specification,
> +	 * but otherwise, USB on Efika doesn't charge VBUS
> +	 * and as a result, USB doesn't work.
>  	 */
> -	ulpi_write(ehci, (u32)&ulpi->otg_ctrl_set, ULPI_OTG_CHRGVBUS);
> +	ulpi_otg_ctrl_flags(ehci, ulpi, SET, ULPI_OTG_DRVVBUS |
> +		ULPI_OTG_DRVVBUS_EXT | ULPI_OTG_CHRGVBUS);
>  }
> 
>  /*
> @@ -353,6 +270,7 @@ void ehci1_init(struct usb_ehci *ehci, struct ulpi_regs
> *ulpi) udelay(10000);
> 
>  	ulpi_init(ehci, ulpi);
> +	ulpi_set_flags(ehci, ulpi);
>  }
> 
>  void ehci2_init(struct usb_ehci *ehci, struct ulpi_regs *ulpi)
> @@ -372,6 +290,7 @@ void ehci2_init(struct usb_ehci *ehci, struct ulpi_regs
> *ulpi) udelay(10000);
> 
>  	ulpi_init(ehci, ulpi);
> +	ulpi_set_flags(ehci, ulpi);
>  }
> 
>  int ehci_hcd_init(void)
> diff --git a/include/configs/efikamx.h b/include/configs/efikamx.h
> index 537a1e4..988236b 100644
> --- a/include/configs/efikamx.h
> +++ b/include/configs/efikamx.h
> @@ -188,6 +188,7 @@
>  #define CONFIG_EHCI_IS_TDI
>  #define CONFIG_USB_STORAGE
>  #define CONFIG_USB_KEYBOARD
> +#define CONFIG_USB_ULPI
>  #endif /* CONFIG_CMD_USB */
> 
>  /*