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@@ -22,8 +22,12 @@
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/dma-mapping.h>
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-
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-#include <asm/io.h>
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+#include <linux/regulator/machine.h>
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+#include <linux/regulator/fixed.h>
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+#include <linux/string.h>
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+#include <linux/io.h>
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+#include <linux/gpio.h>
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+#include <linux/usb/phy.h>
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#include "soc.h"
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#include "omap_device.h"
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@@ -526,3 +530,155 @@ void __init usbhs_init(struct usbhs_omap_platform_data *pdata)
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}
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#endif
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+
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+/* Template for PHY regulators */
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+static struct fixed_voltage_config hsusb_reg_config = {
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+ /* .supply_name filled later */
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+ .microvolts = 3300000,
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+ .gpio = -1, /* updated later */
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+ .startup_delay = 70000, /* 70msec */
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+ .enable_high = 1, /* updated later */
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+ .enabled_at_boot = 0, /* keep in RESET */
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+ /* .init_data filled later */
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+};
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+
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+static const char *nop_name = "nop_usb_xceiv"; /* NOP PHY driver */
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+static const char *reg_name = "reg-fixed-voltage"; /* Regulator driver */
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+
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+/**
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+ * usbhs_add_regulator - Add a gpio based fixed voltage regulator device
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+ * @name: name for the regulator
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+ * @dev_id: device id of the device this regulator supplies power to
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+ * @dev_supply: supply name that the device expects
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+ * @gpio: GPIO number
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+ * @polarity: 1 - Active high, 0 - Active low
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+ */
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+static int usbhs_add_regulator(char *name, char *dev_id, char *dev_supply,
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+ int gpio, int polarity)
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+{
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+ struct regulator_consumer_supply *supplies;
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+ struct regulator_init_data *reg_data;
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+ struct fixed_voltage_config *config;
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+ struct platform_device *pdev;
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+ int ret;
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+
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+ supplies = kzalloc(sizeof(*supplies), GFP_KERNEL);
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+ if (!supplies)
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+ return -ENOMEM;
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+
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+ supplies->supply = dev_supply;
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+ supplies->dev_name = dev_id;
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+
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+ reg_data = kzalloc(sizeof(*reg_data), GFP_KERNEL);
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+ if (!reg_data)
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+ return -ENOMEM;
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+
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+ reg_data->constraints.valid_ops_mask = REGULATOR_CHANGE_STATUS;
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+ reg_data->consumer_supplies = supplies;
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+ reg_data->num_consumer_supplies = 1;
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+
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+ config = kmemdup(&hsusb_reg_config, sizeof(hsusb_reg_config),
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+ GFP_KERNEL);
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+ if (!config)
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+ return -ENOMEM;
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+
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+ config->supply_name = name;
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+ config->gpio = gpio;
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+ config->enable_high = polarity;
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+ config->init_data = reg_data;
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+
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+ /* create a regulator device */
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+ pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
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+ if (!pdev)
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+ return -ENOMEM;
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+
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+ pdev->id = PLATFORM_DEVID_AUTO;
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+ pdev->name = reg_name;
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+ pdev->dev.platform_data = config;
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+
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+ ret = platform_device_register(pdev);
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+ if (ret)
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+ pr_err("%s: Failed registering regulator %s for %s\n",
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+ __func__, name, dev_id);
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+
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+ return ret;
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+}
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+
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+int usbhs_init_phys(struct usbhs_phy_data *phy, int num_phys)
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+{
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+ char *rail_name;
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+ int i, len;
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+ struct platform_device *pdev;
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+ char *phy_id;
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+
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+ /* the phy_id will be something like "nop_usb_xceiv.1" */
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+ len = strlen(nop_name) + 3; /* 3 -> ".1" and NULL terminator */
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+
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+ for (i = 0; i < num_phys; i++) {
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+
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+ if (!phy->port) {
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+ pr_err("%s: Invalid port 0. Must start from 1\n",
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+ __func__);
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+ continue;
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+ }
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+
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+ /* do we need a NOP PHY device ? */
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+ if (!gpio_is_valid(phy->reset_gpio) &&
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+ !gpio_is_valid(phy->vcc_gpio))
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+ continue;
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+
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+ /* create a NOP PHY device */
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+ pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
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+ if (!pdev)
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+ return -ENOMEM;
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+
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+ pdev->id = phy->port;
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+ pdev->name = nop_name;
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+ pdev->dev.platform_data = phy->platform_data;
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+
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+ phy_id = kmalloc(len, GFP_KERNEL);
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+ if (!phy_id)
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+ return -ENOMEM;
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+
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+ scnprintf(phy_id, len, "nop_usb_xceiv.%d\n",
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+ pdev->id);
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+
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+ if (platform_device_register(pdev)) {
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+ pr_err("%s: Failed to register device %s\n",
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+ __func__, phy_id);
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+ continue;
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+ }
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+
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+ usb_bind_phy("ehci-omap.0", phy->port - 1, phy_id);
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+
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+ /* Do we need RESET regulator ? */
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+ if (gpio_is_valid(phy->reset_gpio)) {
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+
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+ rail_name = kmalloc(13, GFP_KERNEL);
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+ if (!rail_name)
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+ return -ENOMEM;
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+
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+ scnprintf(rail_name, 13, "hsusb%d_reset", phy->port);
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+
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+ usbhs_add_regulator(rail_name, phy_id, "reset",
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+ phy->reset_gpio, 1);
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+ }
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+
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+ /* Do we need VCC regulator ? */
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+ if (gpio_is_valid(phy->vcc_gpio)) {
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+
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+ rail_name = kmalloc(13, GFP_KERNEL);
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+ if (!rail_name)
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+ return -ENOMEM;
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+
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+ scnprintf(rail_name, 13, "hsusb%d_vcc", phy->port);
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+
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+ usbhs_add_regulator(rail_name, phy_id, "vcc",
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+ phy->vcc_gpio, phy->vcc_polarity);
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+ }
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+
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+ phy++;
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+ }
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+
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+ return 0;
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+}
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