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usb: musb: da8xx: Remove mach code

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Use the new phy-da8xx-usb driver to take the place of the mach code that
pokes CFGCHIP2 in the da8xx musb glue driver. This unbreaks the driver.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Lechner 2016-09-12 21:48:34 -05:00 committed by Greg Kroah-Hartman
parent d458fe9a71
commit 947c49afe4
2 changed files with 51 additions and 86 deletions
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2
drivers/usb/musb/Kconfig
View File

@ -82,7 +82,7 @@ config USB_MUSB_DA8XX
tristate "DA8xx/OMAP-L1x"
depends on ARCH_DAVINCI_DA8XX
depends on NOP_USB_XCEIV
depends on BROKEN
select PHY_DA8XX_USB
config USB_MUSB_TUSB6010
tristate "TUSB6010"

135
drivers/usb/musb/da8xx.c
View File

@ -30,13 +30,11 @@
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/phy/phy.h>
#include <linux/platform_device.h>
#include <linux/dma-mapping.h>
#include <linux/usb/usb_phy_generic.h>
#include <mach/da8xx.h>
#include <linux/platform_data/usb-davinci.h>
#include "musb_core.h"
/*
@ -80,60 +78,14 @@
#define DA8XX_MENTOR_CORE_OFFSET 0x400
#define CFGCHIP2 IO_ADDRESS(DA8XX_SYSCFG0_BASE + DA8XX_CFGCHIP2_REG)
struct da8xx_glue {
struct device *dev;
struct platform_device *musb;
struct platform_device *phy;
struct platform_device *usb_phy;
struct clk *clk;
struct phy *phy;
};
/*
* REVISIT (PM): we should be able to keep the PHY in low power mode most
* of the time (24 MHz oscillator and PLL off, etc.) by setting POWER.D0
* and, when in host mode, autosuspending idle root ports... PHY_PLLON
* (overriding SUSPENDM?) then likely needs to stay off.
*/
static inline void phy_on(void)
{
u32 cfgchip2 = __raw_readl(CFGCHIP2);
/*
* Start the on-chip PHY and its PLL.
*/
cfgchip2 &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN);
cfgchip2 |= CFGCHIP2_PHY_PLLON;
__raw_writel(cfgchip2, CFGCHIP2);
pr_info("Waiting for USB PHY clock good...\n");
while (!(__raw_readl(CFGCHIP2) & CFGCHIP2_PHYCLKGD))
cpu_relax();
}
static inline void phy_off(void)
{
u32 cfgchip2 = __raw_readl(CFGCHIP2);
/*
* Ensure that USB 1.1 reference clock is not being sourced from
* USB 2.0 PHY. Otherwise do not power down the PHY.
*/
if (!(cfgchip2 & CFGCHIP2_USB1PHYCLKMUX) &&
(cfgchip2 & CFGCHIP2_USB1SUSPENDM)) {
pr_warning("USB 1.1 clocked from USB 2.0 PHY -- "
"can't power it down\n");
return;
}
/*
* Power down the on-chip PHY.
*/
cfgchip2 |= CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN;
__raw_writel(cfgchip2, CFGCHIP2);
}
/*
* Because we don't set CTRL.UINT, it's "important" to:
* - not read/write INTRUSB/INTRUSBE (except during
@ -385,29 +337,29 @@ static irqreturn_t da8xx_musb_interrupt(int irq, void *hci)
static int da8xx_musb_set_mode(struct musb *musb, u8 musb_mode)
{
u32 cfgchip2 = __raw_readl(CFGCHIP2);
struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent);
enum phy_mode phy_mode;
cfgchip2 &= ~CFGCHIP2_OTGMODE;
switch (musb_mode) {
case MUSB_HOST: /* Force VBUS valid, ID = 0 */
cfgchip2 |= CFGCHIP2_FORCE_HOST;
phy_mode = PHY_MODE_USB_HOST;
break;
case MUSB_PERIPHERAL: /* Force VBUS valid, ID = 1 */
cfgchip2 |= CFGCHIP2_FORCE_DEVICE;
phy_mode = PHY_MODE_USB_DEVICE;
break;
case MUSB_OTG: /* Don't override the VBUS/ID comparators */
cfgchip2 |= CFGCHIP2_NO_OVERRIDE;
phy_mode = PHY_MODE_USB_OTG;
break;
default:
dev_dbg(musb->controller, "Trying to set unsupported mode %u\n", musb_mode);
return -EINVAL;
}
__raw_writel(cfgchip2, CFGCHIP2);
return 0;
return phy_set_mode(glue->phy, phy_mode);
}
static int da8xx_musb_init(struct musb *musb)
{
struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent);
void __iomem *reg_base = musb->ctrl_base;
u32 rev;
int ret = -ENODEV;
@ -425,32 +377,56 @@ static int da8xx_musb_init(struct musb *musb)
goto fail;
}
ret = clk_prepare_enable(glue->clk);
if (ret) {
dev_err(glue->dev, "failed to enable clock\n");
goto fail;
}
setup_timer(&otg_workaround, otg_timer, (unsigned long)musb);
/* Reset the controller */
musb_writel(reg_base, DA8XX_USB_CTRL_REG, DA8XX_SOFT_RESET_MASK);
/* Start the on-chip PHY and its PLL. */
phy_on();
ret = phy_init(glue->phy);
if (ret) {
dev_err(glue->dev, "Failed to init phy.\n");
goto err_phy_init;
}
ret = phy_power_on(glue->phy);
if (ret) {
dev_err(glue->dev, "Failed to power on phy.\n");
goto err_phy_power_on;
}
msleep(5);
/* NOTE: IRQs are in mixed mode, not bypass to pure MUSB */
pr_debug("DA8xx OTG revision %08x, PHY %03x, control %02x\n",
rev, __raw_readl(CFGCHIP2),
pr_debug("DA8xx OTG revision %08x, control %02x\n", rev,
musb_readb(reg_base, DA8XX_USB_CTRL_REG));
musb->isr = da8xx_musb_interrupt;
return 0;
err_phy_power_on:
phy_exit(glue->phy);
err_phy_init:
clk_disable_unprepare(glue->clk);
fail:
return ret;
}
static int da8xx_musb_exit(struct musb *musb)
{
struct da8xx_glue *glue = dev_get_drvdata(musb->controller->parent);
del_timer_sync(&otg_workaround);
phy_off();
phy_power_off(glue->phy);
phy_exit(glue->phy);
clk_disable_unprepare(glue->clk);
usb_put_phy(musb->xceiv);
@ -502,10 +478,10 @@ static int da8xx_probe(struct platform_device *pdev)
return PTR_ERR(clk);
}
ret = clk_enable(clk);
if (ret) {
dev_err(&pdev->dev, "failed to enable clock\n");
goto err4;
glue->phy = devm_phy_get(&pdev->dev, "usb-phy");
if (IS_ERR(glue->phy)) {
dev_err(&pdev->dev, "failed to get phy\n");
return PTR_ERR(glue->phy);
}
glue->dev = &pdev->dev;
@ -513,10 +489,10 @@ static int da8xx_probe(struct platform_device *pdev)
pdata->platform_ops = &da8xx_ops;
glue->phy = usb_phy_generic_register();
if (IS_ERR(glue->phy)) {
ret = PTR_ERR(glue->phy);
goto err5;
glue->usb_phy = usb_phy_generic_register();
if (IS_ERR(glue->usb_phy)) {
dev_err(&pdev->dev, "failed to register usb_phy\n");
return PTR_ERR(glue->usb_phy);
}
platform_set_drvdata(pdev, glue);
@ -542,22 +518,12 @@ static int da8xx_probe(struct platform_device *pdev)
glue->musb = musb = platform_device_register_full(&pinfo);
if (IS_ERR(musb)) {
ret = PTR_ERR(musb);
dev_err(&pdev->dev, "failed to register musb device: %d\n", ret);
goto err6;
usb_phy_generic_unregister(glue->usb_phy);
return PTR_ERR(musb);
}
return 0;
err6:
usb_phy_generic_unregister(glue->phy);
err5:
clk_disable(clk);
err4:
return ret;
}
static int da8xx_remove(struct platform_device *pdev)
@ -565,8 +531,7 @@ static int da8xx_remove(struct platform_device *pdev)
struct da8xx_glue *glue = platform_get_drvdata(pdev);
platform_device_unregister(glue->musb);
usb_phy_generic_unregister(glue->phy);
clk_disable(glue->clk);
usb_phy_generic_unregister(glue->usb_phy);
return 0;
}