[PATCH v9 06/20] mfd: omap-usb-tll: introduce and use mode_needs_tll()

Roger Quadros
2013-01-23T10:42:40Z

This is a handy macro to check if the port requires the
USB TLL module or not. Use it to Enable the TLL module and manage
the clocks.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
---
drivers/mfd/omap-usb-tll.c | 20 ++++++++++++--------
1 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/drivers/mfd/omap-usb-tll.c b/drivers/mfd/omap-usb-tll.c
index bf7355e..af67b96 100644
--- a/drivers/mfd/omap-usb-tll.c
+++ b/drivers/mfd/omap-usb-tll.c
@@ -95,6 +95,10 @@

#define is_ehci_tll_mode(x) (x == OMAP_EHCI_PORT_MODE_TLL)

+/* only PHY and UNUSED modes don't need TLL */
+#define omap_usb_mode_needs_tll(x) ((x) != OMAP_USBHS_PORT_MODE_UNUSED &&\
+ (x) != OMAP_EHCI_PORT_MODE_PHY)
+
struct usbtll_omap {
int nch; /* num. of channels */
struct usbhs_omap_platform_data *pdata;
@@ -211,6 +215,7 @@ static int usbtll_omap_probe(struct platform_device *pdev)
unsigned long flags;
int ret = 0;
int i, ver;
+ bool needs_tll;

dev_dbg(dev, "starting TI HSUSB TLL Controller\n");

@@ -278,12 +283,11 @@ static int usbtll_omap_probe(struct platform_device *pdev)

spin_lock_irqsave(&tll->lock, flags);

- if (is_ehci_tll_mode(pdata->port_mode[0]) ||
- is_ehci_tll_mode(pdata->port_mode[1]) ||
- is_ehci_tll_mode(pdata->port_mode[2]) ||
- is_ohci_port(pdata->port_mode[0]) ||
- is_ohci_port(pdata->port_mode[1]) ||
- is_ohci_port(pdata->port_mode[2])) {
+ needs_tll = false;
+ for (i = 0; i < tll->nch; i++)
+ needs_tll |= omap_usb_mode_needs_tll(pdata->port_mode[i]);
+
+ if (needs_tll) {

/* Program Common TLL register */
reg = usbtll_read(base, OMAP_TLL_SHARED_CONF);
@@ -372,7 +376,7 @@ static int usbtll_runtime_resume(struct device *dev)
spin_lock_irqsave(&tll->lock, flags);

for (i = 0; i < tll->nch; i++) {
- if (is_ehci_tll_mode(pdata->port_mode[i])) {
+ if (omap_usb_mode_needs_tll(pdata->port_mode[i])) {
int r;

if (IS_ERR(tll->ch_clk[i]))
@@ -408,7 +412,7 @@ static int usbtll_runtime_suspend(struct device *dev)
spin_lock_irqsave(&tll->lock, flags);

for (i = 0; i < tll->nch; i++) {
- if (is_ehci_tll_mode(pdata->port_mode[i])) {
+ if (omap_usb_mode_needs_tll(pdata->port_mode[i])) {
if (!IS_ERR(tll->ch_clk[i]))
clk_disable(tll->ch_clk[i]);
}
--
1.7.4.1