[U-Boot] [PATCH] Drivers: USB: MUSB: Remove legacy CONFIG_USB_DA8XX

[Jean-Jacques Hiblot <jjhiblot@ti.com>]

On 11/12/2018 10:47, Jean-Jacques Hiblot wrote:
>
> On 10/12/2018 20:01, Marek Vasut wrote:
>> On 12/10/2018 05:35 PM, Adam Ford wrote:
>>> There don't appear to be any boards enabling CONFIG_USB_DA8XX,
>>> and there is a newer version of the MUSB driver, so let's remove
>>> the legacy version of it.
>>>
>>> Signed-off-by: Adam Ford <aford173@gmail.com>
>> CCing Jean, I'd like his A-B/R-B.
>> Looks good to me, so I'll pick it once I have it, thanks!
>
> This is good to see some code removal

This could even go a bit further and remove:

- drivers/usb/host/ohci-da8xx.c

- arch/arm/mach-davinci/include/mach/da8xx-usb.h


>
> Thanks
>
>
> Reviewed-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
>
>
>>
>>> diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig
>>> index 7e6be03f4a..2508b6ed0d 100644
>>> --- a/drivers/usb/musb/Kconfig
>>> +++ b/drivers/usb/musb/Kconfig
>>> @@ -15,10 +15,6 @@ config USB_OMAP3
>>>       bool "Legacy MUSB OMAP3 / OMAP4"
>>>       depends on ARCH_OMAP2PLUS
>>>   -config USB_DA8XX
>>> -    bool "Legacy MUSB DA8xx/OMAP-L1x"
>>> -    depends on ARCH_DAVINCI
>>> -
>>>   config USB_AM35X
>>>       bool"Legacy MUSB AM35x"
>>>       depends on ARCH_OMAP2PLUS && !USB_OMAP3
>>> diff --git a/drivers/usb/musb/Makefile b/drivers/usb/musb/Makefile
>>> index 1242ce1c8c..744f2cfaa2 100644
>>> --- a/drivers/usb/musb/Makefile
>>> +++ b/drivers/usb/musb/Makefile
>>> @@ -6,5 +6,4 @@
>>>   obj-$(CONFIG_USB_MUSB_HCD) += musb_hcd.o musb_core.o
>>>   obj-$(CONFIG_USB_MUSB_UDC) += musb_udc.o musb_core.o
>>>   obj-$(CONFIG_USB_OMAP3) += omap3.o
>>> -obj-$(CONFIG_USB_DA8XX) += da8xx.o
>>>   obj-$(CONFIG_USB_AM35X) += am35x.o
>>> diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c
>>> deleted file mode 100644
>>> index a652a7c3c1..0000000000
>>> --- a/drivers/usb/musb/da8xx.c
>>> +++ /dev/null
>>> @@ -1,127 +0,0 @@
>>> -// SPDX-License-Identifier: GPL-2.0+
>>> -/*
>>> - * da8xx.c - TI's DA8xx platform specific usb wrapper functions.
>>> - *
>>> - * Author: Ajay Kumar Gupta <ajay.gupta@ti.com>
>>> - *
>>> - * Based on drivers/usb/musb/davinci.c
>>> - *
>>> - * Copyright (C) 2009 Texas Instruments Incorporated
>>> - */
>>> -#include <common.h>
>>> -
>>> -#include "musb_core.h"
>>> -#include <asm/arch/da8xx-usb.h>
>>> -
>>> -/* MUSB platform configuration */
>>> -struct musb_config musb_cfg = {
>>> -    .regs        = (struct musb_regs *)DA8XX_USB_OTG_CORE_BASE,
>>> -    .timeout    = DA8XX_USB_OTG_TIMEOUT,
>>> -    .musb_speed    = 0,
>>> -};
>>> -
>>> -/*
>>> - * This function enables VBUS by driving the GPIO Bank4 Pin 15 high.
>>> - */
>>> -static void enable_vbus(void)
>>> -{
>>> -    u32 value;
>>> -
>>> -    /* configure GPIO bank4 pin 15 in output direction */
>>> -    value = readl(&davinci_gpio_bank45->dir);
>>> -    writel((value & (~DA8XX_USB_VBUS_GPIO)), 
>>> &davinci_gpio_bank45->dir);
>>> -
>>> -    /* set GPIO bank4 pin 15 high to drive VBUS */
>>> -    value = readl(&davinci_gpio_bank45->set_data);
>>> -    writel((value | DA8XX_USB_VBUS_GPIO), 
>>> &davinci_gpio_bank45->set_data);
>>> -}
>>> -
>>> -/*
>>> - * Enable the usb0 phy. This initialization procedure is explained in
>>> - * the DA8xx USB user guide document.
>>> - */
>>> -static u8 phy_on(void)
>>> -{
>>> -    u32 timeout;
>>> -    u32 cfgchip2;
>>> -
>>> -    cfgchip2 = readl(&davinci_syscfg_regs->cfgchip2);
>>> -
>>> -    cfgchip2 &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | 
>>> CFGCHIP2_OTGPWRDN |
>>> -              CFGCHIP2_OTGMODE | CFGCHIP2_REFFREQ);
>>> -    cfgchip2 |= CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN | 
>>> CFGCHIP2_PHY_PLLON |
>>> -            CFGCHIP2_REFFREQ_24MHZ;
>>> -
>>> -    writel(cfgchip2, &davinci_syscfg_regs->cfgchip2);
>>> -
>>> -    /* wait until the usb phy pll locks */
>>> -    timeout = musb_cfg.timeout;
>>> -    while (timeout--)
>>> -        if (readl(&davinci_syscfg_regs->cfgchip2) & CFGCHIP2_PHYCLKGD)
>>> -            return 1;
>>> -
>>> -    /* USB phy was not turned on */
>>> -    return 0;
>>> -}
>>> -
>>> -/*
>>> - * Disable the usb phy
>>> - */
>>> -static void phy_off(void)
>>> -{
>>> -    u32 cfgchip2;
>>> -
>>> -    /*
>>> -     * Power down the on-chip PHY.
>>> -     */
>>> -    cfgchip2 = readl(&davinci_syscfg_regs->cfgchip2);
>>> -    cfgchip2 &= ~CFGCHIP2_PHY_PLLON;
>>> -    cfgchip2 |= CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN;
>>> -    writel(cfgchip2, &davinci_syscfg_regs->cfgchip2);
>>> -}
>>> -
>>> -/*
>>> - * This function performs DA8xx platform specific initialization 
>>> for usb0.
>>> - */
>>> -int musb_platform_init(void)
>>> -{
>>> -    u32  revision;
>>> -
>>> -    /* enable psc for usb2.0 */
>>> -    lpsc_on(33);
>>> -
>>> -    /* enable usb vbus */
>>> -    enable_vbus();
>>> -
>>> -    /* reset the controller */
>>> -    writel(0x1, &da8xx_usb_regs->control);
>>> -    udelay(5000);
>>> -
>>> -    /* start the on-chip usb phy and its pll */
>>> -    if (phy_on() == 0)
>>> -        return -1;
>>> -
>>> -    /* Returns zero if e.g. not clocked */
>>> -    revision = readl(&da8xx_usb_regs->revision);
>>> -    if (revision == 0)
>>> -        return -1;
>>> -
>>> -    /* Disable all interrupts */
>>> -    writel((DA8XX_USB_USBINT_MASK | DA8XX_USB_TXINT_MASK |
>>> -        DA8XX_USB_RXINT_MASK), &da8xx_usb_regs->intmsk_set);
>>> -    return 0;
>>> -}
>>> -
>>> -/*
>>> - * This function performs DA8xx platform specific deinitialization 
>>> for usb0.
>>> - */
>>> -void musb_platform_deinit(void)
>>> -{
>>> -    /* Turn of the phy */
>>> -    phy_off();
>>> -
>>> -    /* flush any interrupts */
>>> -    writel((DA8XX_USB_USBINT_MASK | DA8XX_USB_TXINT_MASK |
>>> -        DA8XX_USB_RXINT_MASK), &da8xx_usb_regs->intmsk_clr);
>>> -    writel(0, &da8xx_usb_regs->eoi);
>>> -}
>>>
>