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path: root/drivers/usb/phy/phy-mv-u3d-usb.c
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Diffstat (limited to 'drivers/usb/phy/phy-mv-u3d-usb.c')
-rw-r--r--drivers/usb/phy/phy-mv-u3d-usb.c338
1 files changed, 0 insertions, 338 deletions
diff --git a/drivers/usb/phy/phy-mv-u3d-usb.c b/drivers/usb/phy/phy-mv-u3d-usb.c
deleted file mode 100644
index d317903022b..00000000000
--- a/drivers/usb/phy/phy-mv-u3d-usb.c
+++ /dev/null
@@ -1,338 +0,0 @@
-/*
- * 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 "phy-mv-u3d-usb.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);
-}
-
-static 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 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 = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- dev_err(&pdev->dev, "%s: no platform data defined\n", __func__);
- return -EINVAL;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- phy_base = devm_ioremap_resource(dev, res);
- if (IS_ERR(phy_base))
- return PTR_ERR(phy_base);
-
- 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 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 = 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");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-04 01:30:03 +0000