--- /dev/null
+/*
+ * Copyright (C) 2011 Marvell International Ltd. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/usb/otg.h>
+#include <linux/platform_data/mv_usb.h>
+
+#include "mv_u3d_phy.h"
+
+/*
+ * struct mv_u3d_phy - transceiver driver state
+ * @phy: transceiver structure
+ * @dev: The parent device supplied to the probe function
+ * @clk: usb phy clock
+ * @base: usb phy register memory base
+ */
+struct mv_u3d_phy {
+ struct usb_phy phy;
+ struct mv_usb_platform_data *plat;
+ struct device *dev;
+ struct clk *clk;
+ void __iomem *base;
+};
+
+static u32 mv_u3d_phy_read(void __iomem *base, u32 reg)
+{
+ void __iomem *addr, *data;
+
+ addr = base;
+ data = base + 0x4;
+
+ writel_relaxed(reg, addr);
+ return readl_relaxed(data);
+}
+
+static void mv_u3d_phy_set(void __iomem *base, u32 reg, u32 value)
+{
+ void __iomem *addr, *data;
+ u32 tmp;
+
+ addr = base;
+ data = base + 0x4;
+
+ writel_relaxed(reg, addr);
+ tmp = readl_relaxed(data);
+ tmp |= value;
+ writel_relaxed(tmp, data);
+}
+
+static void mv_u3d_phy_clear(void __iomem *base, u32 reg, u32 value)
+{
+ void __iomem *addr, *data;
+ u32 tmp;
+
+ addr = base;
+ data = base + 0x4;
+
+ writel_relaxed(reg, addr);
+ tmp = readl_relaxed(data);
+ tmp &= ~value;
+ writel_relaxed(tmp, data);
+}
+
+static void mv_u3d_phy_write(void __iomem *base, u32 reg, u32 value)
+{
+ void __iomem *addr, *data;
+
+ addr = base;
+ data = base + 0x4;
+
+ writel_relaxed(reg, addr);
+ writel_relaxed(value, data);
+}
+
+void mv_u3d_phy_shutdown(struct usb_phy *phy)
+{
+ struct mv_u3d_phy *mv_u3d_phy;
+ void __iomem *base;
+ u32 val;
+
+ mv_u3d_phy = container_of(phy, struct mv_u3d_phy, phy);
+ base = mv_u3d_phy->base;
+
+ /* Power down Reference Analog current, bit 15
+ * Power down PLL, bit 14
+ * Power down Receiver, bit 13
+ * Power down Transmitter, bit 12
+ * of USB3_POWER_PLL_CONTROL register
+ */
+ val = mv_u3d_phy_read(base, USB3_POWER_PLL_CONTROL);
+ val &= ~(USB3_POWER_PLL_CONTROL_PU);
+ mv_u3d_phy_write(base, USB3_POWER_PLL_CONTROL, val);
+
+ if (mv_u3d_phy->clk)
+ clk_disable(mv_u3d_phy->clk);
+}
+
+static int mv_u3d_phy_init(struct usb_phy *phy)
+{
+ struct mv_u3d_phy *mv_u3d_phy;
+ void __iomem *base;
+ u32 val, count;
+
+ /* enable usb3 phy */
+ mv_u3d_phy = container_of(phy, struct mv_u3d_phy, phy);
+
+ if (mv_u3d_phy->clk)
+ clk_enable(mv_u3d_phy->clk);
+
+ base = mv_u3d_phy->base;
+
+ val = mv_u3d_phy_read(base, USB3_POWER_PLL_CONTROL);
+ val &= ~(USB3_POWER_PLL_CONTROL_PU_MASK);
+ val |= 0xF << USB3_POWER_PLL_CONTROL_PU_SHIFT;
+ mv_u3d_phy_write(base, USB3_POWER_PLL_CONTROL, val);
+ udelay(100);
+
+ mv_u3d_phy_write(base, USB3_RESET_CONTROL,
+ USB3_RESET_CONTROL_RESET_PIPE);
+ udelay(100);
+
+ mv_u3d_phy_write(base, USB3_RESET_CONTROL,
+ USB3_RESET_CONTROL_RESET_PIPE
+ | USB3_RESET_CONTROL_RESET_PHY);
+ udelay(100);
+
+ val = mv_u3d_phy_read(base, USB3_POWER_PLL_CONTROL);
+ val &= ~(USB3_POWER_PLL_CONTROL_REF_FREF_SEL_MASK
+ | USB3_POWER_PLL_CONTROL_PHY_MODE_MASK);
+ val |= (USB3_PLL_25MHZ << USB3_POWER_PLL_CONTROL_REF_FREF_SEL_SHIFT)
+ | (0x5 << USB3_POWER_PLL_CONTROL_PHY_MODE_SHIFT);
+ mv_u3d_phy_write(base, USB3_POWER_PLL_CONTROL, val);
+ udelay(100);
+
+ mv_u3d_phy_clear(base, USB3_KVCO_CALI_CONTROL,
+ USB3_KVCO_CALI_CONTROL_USE_MAX_PLL_RATE_MASK);
+ udelay(100);
+
+ val = mv_u3d_phy_read(base, USB3_SQUELCH_FFE);
+ val &= ~(USB3_SQUELCH_FFE_FFE_CAP_SEL_MASK
+ | USB3_SQUELCH_FFE_FFE_RES_SEL_MASK
+ | USB3_SQUELCH_FFE_SQ_THRESH_IN_MASK);
+ val |= ((0xD << USB3_SQUELCH_FFE_FFE_CAP_SEL_SHIFT)
+ | (0x7 << USB3_SQUELCH_FFE_FFE_RES_SEL_SHIFT)
+ | (0x8 << USB3_SQUELCH_FFE_SQ_THRESH_IN_SHIFT));
+ mv_u3d_phy_write(base, USB3_SQUELCH_FFE, val);
+ udelay(100);
+
+ val = mv_u3d_phy_read(base, USB3_GEN1_SET0);
+ val &= ~USB3_GEN1_SET0_G1_TX_SLEW_CTRL_EN_MASK;
+ val |= 1 << USB3_GEN1_SET0_G1_TX_EMPH_EN_SHIFT;
+ mv_u3d_phy_write(base, USB3_GEN1_SET0, val);
+ udelay(100);
+
+ val = mv_u3d_phy_read(base, USB3_GEN2_SET0);
+ val &= ~(USB3_GEN2_SET0_G2_TX_AMP_MASK
+ | USB3_GEN2_SET0_G2_TX_EMPH_AMP_MASK
+ | USB3_GEN2_SET0_G2_TX_SLEW_CTRL_EN_MASK);
+ val |= ((0x14 << USB3_GEN2_SET0_G2_TX_AMP_SHIFT)
+ | (1 << USB3_GEN2_SET0_G2_TX_AMP_ADJ_SHIFT)
+ | (0xA << USB3_GEN2_SET0_G2_TX_EMPH_AMP_SHIFT)
+ | (1 << USB3_GEN2_SET0_G2_TX_EMPH_EN_SHIFT));
+ mv_u3d_phy_write(base, USB3_GEN2_SET0, val);
+ udelay(100);
+
+ mv_u3d_phy_read(base, USB3_TX_EMPPH);
+ val &= ~(USB3_TX_EMPPH_AMP_MASK
+ | USB3_TX_EMPPH_EN_MASK
+ | USB3_TX_EMPPH_AMP_FORCE_MASK
+ | USB3_TX_EMPPH_PAR1_MASK
+ | USB3_TX_EMPPH_PAR2_MASK);
+ val |= ((0xB << USB3_TX_EMPPH_AMP_SHIFT)
+ | (1 << USB3_TX_EMPPH_EN_SHIFT)
+ | (1 << USB3_TX_EMPPH_AMP_FORCE_SHIFT)
+ | (0x1C << USB3_TX_EMPPH_PAR1_SHIFT)
+ | (1 << USB3_TX_EMPPH_PAR2_SHIFT));
+
+ mv_u3d_phy_write(base, USB3_TX_EMPPH, val);
+ udelay(100);
+
+ val = mv_u3d_phy_read(base, USB3_GEN2_SET1);
+ val &= ~(USB3_GEN2_SET1_G2_RX_SELMUPI_MASK
+ | USB3_GEN2_SET1_G2_RX_SELMUPF_MASK
+ | USB3_GEN2_SET1_G2_RX_SELMUFI_MASK
+ | USB3_GEN2_SET1_G2_RX_SELMUFF_MASK);
+ val |= ((1 << USB3_GEN2_SET1_G2_RX_SELMUPI_SHIFT)
+ | (1 << USB3_GEN2_SET1_G2_RX_SELMUPF_SHIFT)
+ | (1 << USB3_GEN2_SET1_G2_RX_SELMUFI_SHIFT)
+ | (1 << USB3_GEN2_SET1_G2_RX_SELMUFF_SHIFT));
+ mv_u3d_phy_write(base, USB3_GEN2_SET1, val);
+ udelay(100);
+
+ val = mv_u3d_phy_read(base, USB3_DIGITAL_LOOPBACK_EN);
+ val &= ~USB3_DIGITAL_LOOPBACK_EN_SEL_BITS_MASK;
+ val |= 1 << USB3_DIGITAL_LOOPBACK_EN_SEL_BITS_SHIFT;
+ mv_u3d_phy_write(base, USB3_DIGITAL_LOOPBACK_EN, val);
+ udelay(100);
+
+ val = mv_u3d_phy_read(base, USB3_IMPEDANCE_TX_SSC);
+ val &= ~USB3_IMPEDANCE_TX_SSC_SSC_AMP_MASK;
+ val |= 0xC << USB3_IMPEDANCE_TX_SSC_SSC_AMP_SHIFT;
+ mv_u3d_phy_write(base, USB3_IMPEDANCE_TX_SSC, val);
+ udelay(100);
+
+ val = mv_u3d_phy_read(base, USB3_IMPEDANCE_CALI_CTRL);
+ val &= ~USB3_IMPEDANCE_CALI_CTRL_IMP_CAL_THR_MASK;
+ val |= 0x4 << USB3_IMPEDANCE_CALI_CTRL_IMP_CAL_THR_SHIFT;
+ mv_u3d_phy_write(base, USB3_IMPEDANCE_CALI_CTRL, val);
+ udelay(100);
+
+ val = mv_u3d_phy_read(base, USB3_PHY_ISOLATION_MODE);
+ val &= ~(USB3_PHY_ISOLATION_MODE_PHY_GEN_RX_MASK
+ | USB3_PHY_ISOLATION_MODE_PHY_GEN_TX_MASK
+ | USB3_PHY_ISOLATION_MODE_TX_DRV_IDLE_MASK);
+ val |= ((1 << USB3_PHY_ISOLATION_MODE_PHY_GEN_RX_SHIFT)
+ | (1 << USB3_PHY_ISOLATION_MODE_PHY_GEN_TX_SHIFT));
+ mv_u3d_phy_write(base, USB3_PHY_ISOLATION_MODE, val);
+ udelay(100);
+
+ val = mv_u3d_phy_read(base, USB3_TXDETRX);
+ val &= ~(USB3_TXDETRX_VTHSEL_MASK);
+ val |= 0x1 << USB3_TXDETRX_VTHSEL_SHIFT;
+ mv_u3d_phy_write(base, USB3_TXDETRX, val);
+ udelay(100);
+
+ dev_dbg(mv_u3d_phy->dev, "start calibration\n");
+
+calstart:
+ /* Perform Manual Calibration */
+ mv_u3d_phy_set(base, USB3_KVCO_CALI_CONTROL,
+ 1 << USB3_KVCO_CALI_CONTROL_CAL_START_SHIFT);
+
+ mdelay(1);
+
+ count = 0;
+ while (1) {
+ val = mv_u3d_phy_read(base, USB3_KVCO_CALI_CONTROL);
+ if (val & (1 << USB3_KVCO_CALI_CONTROL_CAL_DONE_SHIFT))
+ break;
+ else if (count > 50) {
+ dev_dbg(mv_u3d_phy->dev, "calibration failure, retry...\n");
+ goto calstart;
+ }
+ count++;
+ mdelay(1);
+ }
+
+ /* active PIPE interface */
+ mv_u3d_phy_write(base, USB3_PIPE_SM_CTRL,
+ 1 << USB3_PIPE_SM_CTRL_PHY_INIT_DONE);
+
+ return 0;
+}
+
+static int __devinit mv_u3d_phy_probe(struct platform_device *pdev)
+{
+ struct mv_u3d_phy *mv_u3d_phy;
+ struct mv_usb_platform_data *pdata;
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ void __iomem *phy_base;
+ int ret;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev, "%s: no platform data defined\n", __func__);
+ return -EINVAL;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(dev, "missing mem resource\n");
+ return -ENODEV;
+ }
+
+ phy_base = devm_request_and_ioremap(dev, res);
+ if (!phy_base) {
+ dev_err(dev, "%s: register mapping failed\n", __func__);
+ return -ENXIO;
+ }
+
+ mv_u3d_phy = devm_kzalloc(dev, sizeof(*mv_u3d_phy), GFP_KERNEL);
+ if (!mv_u3d_phy)
+ return -ENOMEM;
+
+ mv_u3d_phy->dev = &pdev->dev;
+ mv_u3d_phy->plat = pdata;
+ mv_u3d_phy->base = phy_base;
+ mv_u3d_phy->phy.dev = mv_u3d_phy->dev;
+ mv_u3d_phy->phy.label = "mv-u3d-phy";
+ mv_u3d_phy->phy.init = mv_u3d_phy_init;
+ mv_u3d_phy->phy.shutdown = mv_u3d_phy_shutdown;
+
+ ret = usb_add_phy(&mv_u3d_phy->phy, USB_PHY_TYPE_USB3);
+ if (ret)
+ goto err;
+
+ if (!mv_u3d_phy->clk)
+ mv_u3d_phy->clk = clk_get(mv_u3d_phy->dev, "u3dphy");
+
+ platform_set_drvdata(pdev, mv_u3d_phy);
+
+ dev_info(&pdev->dev, "Initialized Marvell USB 3.0 PHY\n");
+err:
+ return ret;
+}
+
+static int __exit mv_u3d_phy_remove(struct platform_device *pdev)
+{
+ struct mv_u3d_phy *mv_u3d_phy = platform_get_drvdata(pdev);
+
+ usb_remove_phy(&mv_u3d_phy->phy);
+
+ if (mv_u3d_phy->clk) {
+ clk_put(mv_u3d_phy->clk);
+ mv_u3d_phy->clk = NULL;
+ }
+
+ return 0;
+}
+
+static struct platform_driver mv_u3d_phy_driver = {
+ .probe = mv_u3d_phy_probe,
+ .remove = __devexit_p(mv_u3d_phy_remove),
+ .driver = {
+ .name = "mv-u3d-phy",
+ .owner = THIS_MODULE,
+ },
+};
+
+module_platform_driver(mv_u3d_phy_driver);
+MODULE_DESCRIPTION("Marvell USB 3.0 PHY controller");
+MODULE_AUTHOR("Yu Xu <yuxu@marvell.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:mv-u3d-phy");
--- /dev/null
+/*
+ * Copyright (C) 2011 Marvell International Ltd. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ */
+
+#ifndef __MV_U3D_PHY_H
+#define __MV_U3D_PHY_H
+
+#define USB3_POWER_PLL_CONTROL 0x1
+#define USB3_KVCO_CALI_CONTROL 0x2
+#define USB3_IMPEDANCE_CALI_CTRL 0x3
+#define USB3_IMPEDANCE_TX_SSC 0x4
+#define USB3_SQUELCH_FFE 0x6
+#define USB3_GEN1_SET0 0xD
+#define USB3_GEN2_SET0 0xF
+#define USB3_GEN2_SET1 0x10
+#define USB3_DIGITAL_LOOPBACK_EN 0x23
+#define USB3_PHY_ISOLATION_MODE 0x26
+#define USB3_TXDETRX 0x48
+#define USB3_TX_EMPPH 0x5E
+#define USB3_RESET_CONTROL 0x90
+#define USB3_PIPE_SM_CTRL 0x91
+
+#define USB3_RESET_CONTROL_RESET_PIPE 0x1
+#define USB3_RESET_CONTROL_RESET_PHY 0x2
+
+#define USB3_POWER_PLL_CONTROL_REF_FREF_SEL_MASK (0x1F << 0)
+#define USB3_POWER_PLL_CONTROL_REF_FREF_SEL_SHIFT 0
+#define USB3_PLL_25MHZ 0x2
+#define USB3_PLL_26MHZ 0x5
+#define USB3_POWER_PLL_CONTROL_PHY_MODE_MASK (0x7 << 5)
+#define USB3_POWER_PLL_CONTROL_PHY_MODE_SHIFT 5
+#define USB3_POWER_PLL_CONTROL_PU_MASK (0xF << 12)
+#define USB3_POWER_PLL_CONTROL_PU_SHIFT 12
+#define USB3_POWER_PLL_CONTROL_PU (0xF << 12)
+
+#define USB3_KVCO_CALI_CONTROL_USE_MAX_PLL_RATE_MASK (0x1 << 12)
+#define USB3_KVCO_CALI_CONTROL_USE_MAX_PLL_RATE_SHIFT 12
+#define USB3_KVCO_CALI_CONTROL_CAL_DONE_SHIFT 14
+#define USB3_KVCO_CALI_CONTROL_CAL_START_SHIFT 15
+
+#define USB3_SQUELCH_FFE_FFE_CAP_SEL_MASK 0xF
+#define USB3_SQUELCH_FFE_FFE_CAP_SEL_SHIFT 0
+#define USB3_SQUELCH_FFE_FFE_RES_SEL_MASK (0x7 << 4)
+#define USB3_SQUELCH_FFE_FFE_RES_SEL_SHIFT 4
+#define USB3_SQUELCH_FFE_SQ_THRESH_IN_MASK (0x1F << 8)
+#define USB3_SQUELCH_FFE_SQ_THRESH_IN_SHIFT 8
+
+#define USB3_GEN1_SET0_G1_TX_SLEW_CTRL_EN_MASK (0x1 << 15)
+#define USB3_GEN1_SET0_G1_TX_EMPH_EN_SHIFT 11
+
+#define USB3_GEN2_SET0_G2_TX_AMP_MASK (0x1F << 1)
+#define USB3_GEN2_SET0_G2_TX_AMP_SHIFT 1
+#define USB3_GEN2_SET0_G2_TX_AMP_ADJ_SHIFT 6
+#define USB3_GEN2_SET0_G2_TX_EMPH_AMP_MASK (0xF << 7)
+#define USB3_GEN2_SET0_G2_TX_EMPH_AMP_SHIFT 7
+#define USB3_GEN2_SET0_G2_TX_EMPH_EN_MASK (0x1 << 11)
+#define USB3_GEN2_SET0_G2_TX_EMPH_EN_SHIFT 11
+#define USB3_GEN2_SET0_G2_TX_SLEW_CTRL_EN_MASK (0x1 << 15)
+#define USB3_GEN2_SET0_G2_TX_SLEW_CTRL_EN_SHIFT 15
+
+#define USB3_GEN2_SET1_G2_RX_SELMUPI_MASK (0x7 << 0)
+#define USB3_GEN2_SET1_G2_RX_SELMUPI_SHIFT 0
+#define USB3_GEN2_SET1_G2_RX_SELMUPF_MASK (0x7 << 3)
+#define USB3_GEN2_SET1_G2_RX_SELMUPF_SHIFT 3
+#define USB3_GEN2_SET1_G2_RX_SELMUFI_MASK (0x3 << 6)
+#define USB3_GEN2_SET1_G2_RX_SELMUFI_SHIFT 6
+#define USB3_GEN2_SET1_G2_RX_SELMUFF_MASK (0x3 << 8)
+#define USB3_GEN2_SET1_G2_RX_SELMUFF_SHIFT 8
+
+#define USB3_DIGITAL_LOOPBACK_EN_SEL_BITS_MASK (0x3 << 10)
+#define USB3_DIGITAL_LOOPBACK_EN_SEL_BITS_SHIFT 10
+
+#define USB3_IMPEDANCE_CALI_CTRL_IMP_CAL_THR_MASK (0x7 << 12)
+#define USB3_IMPEDANCE_CALI_CTRL_IMP_CAL_THR_SHIFT 12
+
+#define USB3_IMPEDANCE_TX_SSC_SSC_AMP_MASK (0x3F << 0)
+#define USB3_IMPEDANCE_TX_SSC_SSC_AMP_SHIFT 0
+
+#define USB3_PHY_ISOLATION_MODE_PHY_GEN_RX_MASK 0xF
+#define USB3_PHY_ISOLATION_MODE_PHY_GEN_RX_SHIFT 0
+#define USB3_PHY_ISOLATION_MODE_PHY_GEN_TX_MASK (0xF << 4)
+#define USB3_PHY_ISOLATION_MODE_PHY_GEN_TX_SHIFT 4
+#define USB3_PHY_ISOLATION_MODE_TX_DRV_IDLE_MASK (0x1 << 8)
+
+#define USB3_TXDETRX_VTHSEL_MASK (0x3 << 4)
+#define USB3_TXDETRX_VTHSEL_SHIFT 4
+
+#define USB3_TX_EMPPH_AMP_MASK (0xF << 0)
+#define USB3_TX_EMPPH_AMP_SHIFT 0
+#define USB3_TX_EMPPH_EN_MASK (0x1 << 6)
+#define USB3_TX_EMPPH_EN_SHIFT 6
+#define USB3_TX_EMPPH_AMP_FORCE_MASK (0x1 << 7)
+#define USB3_TX_EMPPH_AMP_FORCE_SHIFT 7
+#define USB3_TX_EMPPH_PAR1_MASK (0x1F << 8)
+#define USB3_TX_EMPPH_PAR1_SHIFT 8
+#define USB3_TX_EMPPH_PAR2_MASK (0x1 << 13)
+#define USB3_TX_EMPPH_PAR2_SHIFT 13
+
+#define USB3_PIPE_SM_CTRL_PHY_INIT_DONE 15
+
+#endif /* __MV_U3D_PHY_H */
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