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Date: Mon, 8 Jul 2013 16:13:21 +0530
From: George Cherian <george.cherian@...com>
To: <linux-usb@...r.kernel.org>
CC: <balbi@...com>, <linux-kernel@...r.kernel.org>,
<gregkh@...uxfoundation.org>, <linux-omap@...r.kernel.org>,
<kishon@...com>, <bigeasy@...utronix.de>,
George Cherian <george.cherian@...com>
Subject: [PATCH 5/5] usb: musb: dsps: Remove the phy control from glue and add phy driver APIs
Remove usb phy control module access from platform glue.
The same is now done using amxxxx phy driver and phy-omap-control.
Signed-off-by: George Cherian <george.cherian@...com>
---
drivers/usb/musb/musb_dsps.c | 105 +++++++++++++++----------------------------
1 file changed, 36 insertions(+), 69 deletions(-)
diff --git a/drivers/usb/musb/musb_dsps.c b/drivers/usb/musb/musb_dsps.c
index 41f135a..8f4e04a 100644
--- a/drivers/usb/musb/musb_dsps.c
+++ b/drivers/usb/musb/musb_dsps.c
@@ -123,49 +123,11 @@ struct dsps_glue {
const struct dsps_musb_wrapper *wrp; /* wrapper register offsets */
struct timer_list timer[2]; /* otg_workaround timer */
unsigned long last_timer[2]; /* last timer data for each instance */
- u32 __iomem *usb_ctrl[2];
};
-#define DSPS_AM33XX_CONTROL_MODULE_PHYS_0 0x44e10620
-#define DSPS_AM33XX_CONTROL_MODULE_PHYS_1 0x44e10628
+#define glue_to_musb(g, i) platform_get_drvdata(g->musb[i])
-static const resource_size_t dsps_control_module_phys[] = {
- DSPS_AM33XX_CONTROL_MODULE_PHYS_0,
- DSPS_AM33XX_CONTROL_MODULE_PHYS_1,
-};
-
-#define USBPHY_CM_PWRDN (1 << 0)
-#define USBPHY_OTG_PWRDN (1 << 1)
-#define USBPHY_OTGVDET_EN (1 << 19)
-#define USBPHY_OTGSESSEND_EN (1 << 20)
-
-/**
- * musb_dsps_phy_control - phy on/off
- * @glue: struct dsps_glue *
- * @id: musb instance
- * @on: flag for phy to be switched on or off
- *
- * This is to enable the PHY using usb_ctrl register in system control
- * module space.
- *
- * XXX: This function will be removed once we have a seperate driver for
- * control module
- */
-static void musb_dsps_phy_control(struct dsps_glue *glue, u8 id, u8 on)
-{
- u32 usbphycfg;
- usbphycfg = readl(glue->usb_ctrl[id]);
-
- if (on) {
- usbphycfg &= ~(USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN);
- usbphycfg |= USBPHY_OTGVDET_EN | USBPHY_OTGSESSEND_EN;
- } else {
- usbphycfg |= USBPHY_CM_PWRDN | USBPHY_OTG_PWRDN;
- }
-
- writel(usbphycfg, glue->usb_ctrl[id]);
-}
/**
* dsps_musb_enable - enable interrupts
*/
@@ -411,16 +373,31 @@ static int dsps_musb_init(struct musb *musb)
void __iomem *reg_base = musb->ctrl_base;
u32 rev, val;
int status;
+ char phyname[12];
/* mentor core register starts at offset of 0x400 from musb base */
musb->mregs += wrp->musb_core_offset;
- /* NOP driver needs change if supporting dual instance */
- usb_nop_xceiv_register();
- musb->xceiv = usb_get_phy(USB_PHY_TYPE_USB2);
+ if (dev->parent->of_node) {
+ snprintf(phyname , 12, "am335x-usb%d", pdev->id);
+ musb->phy = devm_phy_get(dev->parent, phyname);
+ musb->xceiv = devm_usb_get_phy_by_phandle(dev->parent,
+ "phys", pdev->id);
+ } else {
+ snprintf(phyname , 12, "am335x-usb%d", pdev->id);
+ musb->phy = devm_phy_get(dev, musb->phy_label);
+ musb->xceiv = devm_usb_get_phy_dev(dev, pdev->id);
+ }
+
if (IS_ERR_OR_NULL(musb->xceiv))
return -EPROBE_DEFER;
+ if (IS_ERR_OR_NULL(musb->phy)) {
+ pr_err("no PHY configured\n");
+ return -EPROBE_DEFER;
+ }
+
+
/* Returns zero if e.g. not clocked */
rev = dsps_readl(reg_base, wrp->revision);
if (!rev) {
@@ -434,7 +411,8 @@ static int dsps_musb_init(struct musb *musb)
dsps_writel(reg_base, wrp->control, (1 << wrp->reset));
/* Start the on-chip PHY and its PLL. */
- musb_dsps_phy_control(glue, pdev->id, 1);
+ phy_init(musb->phy);
+ phy_power_on(musb->phy);
musb->isr = dsps_interrupt;
@@ -448,8 +426,7 @@ static int dsps_musb_init(struct musb *musb)
return 0;
err0:
- usb_put_phy(musb->xceiv);
- usb_nop_xceiv_unregister();
+ devm_phy_put(dev->parent, musb->phy);
return status;
}
@@ -462,11 +439,8 @@ static int dsps_musb_exit(struct musb *musb)
del_timer_sync(&glue->timer[pdev->id]);
/* Shutdown the on-chip PHY and its PLL. */
- musb_dsps_phy_control(glue, pdev->id, 0);
-
- /* NOP driver needs change if supporting dual instance */
- usb_put_phy(musb->xceiv);
- usb_nop_xceiv_unregister();
+ phy_power_off(musb->phy);
+ phy_exit(musb->phy);
return 0;
}
@@ -496,16 +470,6 @@ static int dsps_create_musb_pdev(struct dsps_glue *glue, u8 id)
char res_name[11];
int ret;
- resources[0].start = dsps_control_module_phys[id];
- resources[0].end = resources[0].start + SZ_4 - 1;
- resources[0].flags = IORESOURCE_MEM;
-
- glue->usb_ctrl[id] = devm_ioremap_resource(&pdev->dev, resources);
- if (IS_ERR(glue->usb_ctrl[id])) {
- ret = PTR_ERR(glue->usb_ctrl[id]);
- goto err0;
- }
-
/* first resource is for usbss, so start index from 1 */
res = platform_get_resource(pdev, IORESOURCE_MEM, id + 1);
if (!res) {
@@ -692,26 +656,29 @@ static int dsps_remove(struct platform_device *pdev)
#ifdef CONFIG_PM_SLEEP
static int dsps_suspend(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev->parent);
- struct dsps_glue *glue = platform_get_drvdata(pdev);
+ struct dsps_glue *glue = dev_get_drvdata(dev);
const struct dsps_musb_wrapper *wrp = glue->wrp;
+ struct musb *musb;
int i;
- for (i = 0; i < wrp->instances; i++)
- musb_dsps_phy_control(glue, i, 0);
-
+ for (i = 0; i < wrp->instances; i++) {
+ musb = glue_to_musb(glue, i);
+ phy_power_off(musb->phy);
+ }
return 0;
}
static int dsps_resume(struct device *dev)
{
- struct platform_device *pdev = to_platform_device(dev->parent);
- struct dsps_glue *glue = platform_get_drvdata(pdev);
+ struct dsps_glue *glue = dev_get_drvdata(dev);
const struct dsps_musb_wrapper *wrp = glue->wrp;
+ struct musb *musb;
int i;
- for (i = 0; i < wrp->instances; i++)
- musb_dsps_phy_control(glue, i, 1);
+ for (i = 0; i < wrp->instances; i++) {
+ musb = glue_to_musb(glue, i);
+ phy_power_on(musb->phy);
+ }
return 0;
}
--
1.8.1.4
--
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