@@ -26,6 +26,7 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/gpio.h>
+#include <linux/gpio/machine.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
@@ -55,6 +56,9 @@
#include "common.h"
+/* Name of the GPIO chip used by the OMAP for GPIOs 0..15 */
+#define OMAP_GPIO_LABEL "gpio-0-15"
+
/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
#define OMAP_OSK_ETHR_START 0x04800300
@@ -240,7 +244,9 @@ static struct tps65010_board tps_board = {
static struct i2c_board_info __initdata osk_i2c_board_info[] = {
{
+ /* This device will get the name "i2c-tps65010" */
I2C_BOARD_INFO("tps65010", 0x48),
+ .dev_name = "tps65010",
.platform_data = &tps_board,
},
@@ -278,6 +284,16 @@ static void __init osk_init_cf(void)
irq_set_irq_type(gpio_to_irq(62), IRQ_TYPE_EDGE_FALLING);
}
+static struct gpiod_lookup_table osk_usb_gpio_table = {
+ .dev_id = "ohci",
+ .table = {
+ /* Power GPIO on the I2C-attached TPS65010 */
+ GPIO_LOOKUP("i2c-tps65010", 1, "power", GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP(OMAP_GPIO_LABEL, 9, "overcurrent",
+ GPIO_ACTIVE_HIGH),
+ },
+};
+
static struct omap_usb_config osk_usb_config __initdata = {
/* has usb host connector (A) ... for development it can also
* be used, with a NONSTANDARD gender-bending cable/dongle, as
@@ -581,6 +597,7 @@ static void __init osk_init(void)
l |= (3 << 1);
omap_writel(l, USB_TRANSCEIVER_CTRL);
+ gpiod_add_lookup_table(&osk_usb_gpio_table);
omap1_usb_init(&osk_usb_config);
/* irq for tps65010 chip */
@@ -18,7 +18,7 @@
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/err.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/kernel.h>
@@ -53,25 +53,11 @@
#define DRIVER_DESC "OHCI OMAP driver"
-#ifdef CONFIG_TPS65010
-#include <linux/mfd/tps65010.h>
-#else
-
-#define LOW 0
-#define HIGH 1
-
-#define GPIO1 1
-
-static inline int tps65010_set_gpio_out_value(unsigned gpio, unsigned value)
-{
- return 0;
-}
-
-#endif
-
struct ohci_omap_priv {
struct clk *usb_host_ck;
struct clk *usb_dc_ck;
+ struct gpio_desc *power;
+ struct gpio_desc *overcurrent;
};
static const char hcd_name[] = "ohci-omap";
@@ -97,22 +83,22 @@ static void omap_ohci_clock_power(struct ohci_omap_priv *priv, int on)
* Board specific gang-switched transceiver power on/off.
* NOTE: OSK supplies power from DC, not battery.
*/
-static int omap_ohci_transceiver_power(int on)
+static int omap_ohci_transceiver_power(struct ohci_omap_priv *priv, int on)
{
if (on) {
if (machine_is_omap_innovator() && cpu_is_omap1510())
__raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL)
| ((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
INNOVATOR_FPGA_CAM_USB_CONTROL);
- else if (machine_is_omap_osk())
- tps65010_set_gpio_out_value(GPIO1, LOW);
+ else if (priv->power)
+ gpiod_set_value(priv->power, 0);
} else {
if (machine_is_omap_innovator() && cpu_is_omap1510())
__raw_writeb(__raw_readb(INNOVATOR_FPGA_CAM_USB_CONTROL)
& ~((1 << 5/*usb1*/) | (1 << 3/*usb2*/)),
INNOVATOR_FPGA_CAM_USB_CONTROL);
- else if (machine_is_omap_osk())
- tps65010_set_gpio_out_value(GPIO1, HIGH);
+ else if (priv->power)
+ gpiod_set_value(priv->power, 1);
}
return 0;
@@ -272,8 +258,6 @@ static int ohci_omap_reset(struct usb_hcd *hcd)
/* gpio9 for overcurrent detction */
omap_cfg_reg(W8_1610_GPIO9);
- gpio_request(9, "OHCI overcurrent");
- gpio_direction_input(9);
/* for paranoia's sake: disable USB.PUEN */
omap_cfg_reg(W4_USB_HIGHZ);
@@ -287,7 +271,7 @@ static int ohci_omap_reset(struct usb_hcd *hcd)
}
/* FIXME hub_wq hub requests should manage power switching */
- omap_ohci_transceiver_power(1);
+ omap_ohci_transceiver_power(priv, 1);
/* board init will have already handled HMC and mux setup.
* any external transceiver should already be initialized
@@ -334,6 +318,29 @@ static int ohci_hcd_omap_probe(struct platform_device *pdev)
hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
priv = hcd_to_ohci_omap_priv(hcd);
+ /* Obtain two optional GPIO lines */
+ priv->power = devm_gpiod_get_optional(&pdev->dev, "power", GPIOD_ASIS);
+ if (IS_ERR(priv->power)) {
+ retval = PTR_ERR(priv->power);
+ goto err_put_hcd;
+ }
+ if (priv->power)
+ gpiod_set_consumer_name(priv->power, "OHCI power");
+
+ /*
+ * This "overcurrent" GPIO line isn't really used in the code,
+ * but has a designated hardware function.
+ * TODO: implement proper overcurrent handling.
+ */
+ priv->overcurrent = devm_gpiod_get_optional(&pdev->dev, "overcurrent",
+ GPIOD_IN);
+ if (IS_ERR(priv->overcurrent)) {
+ retval = PTR_ERR(priv->overcurrent);
+ goto err_put_hcd;
+ }
+ if (priv->overcurrent)
+ gpiod_set_consumer_name(priv->overcurrent, "OHCI overcurrent");
+
priv->usb_host_ck = clk_get(&pdev->dev, "usb_hhc_ck");
if (IS_ERR(priv->usb_host_ck)) {
retval = PTR_ERR(priv->usb_host_ck);
@@ -411,8 +418,6 @@ static int ohci_hcd_omap_remove(struct platform_device *pdev)
(void) otg_set_host(hcd->usb_phy->otg, 0);
usb_put_phy(hcd->usb_phy);
}
- if (machine_is_omap_osk())
- gpio_free(9);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
clk_put(priv->usb_dc_ck);