| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Lubomir Rintel | 1390 | 99.78% | 1 | 50.00% |
| Chunfeng Yun | 3 | 0.22% | 1 | 50.00% |
| Total | 1393 | 2 |
// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2011 Marvell International Ltd. All rights reserved. * Copyright (C) 2018 Lubomir Rintel <lkundrak@v3.sk> */ #include <dt-bindings/phy/phy.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of_address.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> /* phy regs */ #define UTMI_REVISION 0x0 #define UTMI_CTRL 0x4 #define UTMI_PLL 0x8 #define UTMI_TX 0xc #define UTMI_RX 0x10 #define UTMI_IVREF 0x14 #define UTMI_T0 0x18 #define UTMI_T1 0x1c #define UTMI_T2 0x20 #define UTMI_T3 0x24 #define UTMI_T4 0x28 #define UTMI_T5 0x2c #define UTMI_RESERVE 0x30 #define UTMI_USB_INT 0x34 #define UTMI_DBG_CTL 0x38 #define UTMI_OTG_ADDON 0x3c /* For UTMICTRL Register */ #define UTMI_CTRL_USB_CLK_EN (1 << 31) /* pxa168 */ #define UTMI_CTRL_SUSPEND_SET1 (1 << 30) #define UTMI_CTRL_SUSPEND_SET2 (1 << 29) #define UTMI_CTRL_RXBUF_PDWN (1 << 24) #define UTMI_CTRL_TXBUF_PDWN (1 << 11) #define UTMI_CTRL_INPKT_DELAY_SHIFT 30 #define UTMI_CTRL_INPKT_DELAY_SOF_SHIFT 28 #define UTMI_CTRL_PU_REF_SHIFT 20 #define UTMI_CTRL_ARC_PULLDN_SHIFT 12 #define UTMI_CTRL_PLL_PWR_UP_SHIFT 1 #define UTMI_CTRL_PWR_UP_SHIFT 0 /* For UTMI_PLL Register */ #define UTMI_PLL_PLLCALI12_SHIFT 29 #define UTMI_PLL_PLLCALI12_MASK (0x3 << 29) #define UTMI_PLL_PLLVDD18_SHIFT 27 #define UTMI_PLL_PLLVDD18_MASK (0x3 << 27) #define UTMI_PLL_PLLVDD12_SHIFT 25 #define UTMI_PLL_PLLVDD12_MASK (0x3 << 25) #define UTMI_PLL_CLK_BLK_EN_SHIFT 24 #define CLK_BLK_EN (0x1 << 24) #define PLL_READY (0x1 << 23) #define KVCO_EXT (0x1 << 22) #define VCOCAL_START (0x1 << 21) #define UTMI_PLL_KVCO_SHIFT 15 #define UTMI_PLL_KVCO_MASK (0x7 << 15) #define UTMI_PLL_ICP_SHIFT 12 #define UTMI_PLL_ICP_MASK (0x7 << 12) #define UTMI_PLL_FBDIV_SHIFT 4 #define UTMI_PLL_FBDIV_MASK (0xFF << 4) #define UTMI_PLL_REFDIV_SHIFT 0 #define UTMI_PLL_REFDIV_MASK (0xF << 0) /* For UTMI_TX Register */ #define UTMI_TX_REG_EXT_FS_RCAL_SHIFT 27 #define UTMI_TX_REG_EXT_FS_RCAL_MASK (0xf << 27) #define UTMI_TX_REG_EXT_FS_RCAL_EN_SHIFT 26 #define UTMI_TX_REG_EXT_FS_RCAL_EN_MASK (0x1 << 26) #define UTMI_TX_TXVDD12_SHIFT 22 #define UTMI_TX_TXVDD12_MASK (0x3 << 22) #define UTMI_TX_CK60_PHSEL_SHIFT 17 #define UTMI_TX_CK60_PHSEL_MASK (0xf << 17) #define UTMI_TX_IMPCAL_VTH_SHIFT 14 #define UTMI_TX_IMPCAL_VTH_MASK (0x7 << 14) #define REG_RCAL_START (0x1 << 12) #define UTMI_TX_LOW_VDD_EN_SHIFT 11 #define UTMI_TX_AMP_SHIFT 0 #define UTMI_TX_AMP_MASK (0x7 << 0) /* For UTMI_RX Register */ #define UTMI_REG_SQ_LENGTH_SHIFT 15 #define UTMI_REG_SQ_LENGTH_MASK (0x3 << 15) #define UTMI_RX_SQ_THRESH_SHIFT 4 #define UTMI_RX_SQ_THRESH_MASK (0xf << 4) #define UTMI_OTG_ADDON_OTG_ON (1 << 0) enum pxa_usb_phy_version { PXA_USB_PHY_MMP2, PXA_USB_PHY_PXA910, PXA_USB_PHY_PXA168, }; struct pxa_usb_phy { struct phy *phy; void __iomem *base; enum pxa_usb_phy_version version; }; /***************************************************************************** * The registers read/write routines *****************************************************************************/ static unsigned int u2o_get(void __iomem *base, unsigned int offset) { return readl_relaxed(base + offset); } static void u2o_set(void __iomem *base, unsigned int offset, unsigned int value) { u32 reg; reg = readl_relaxed(base + offset); reg |= value; writel_relaxed(reg, base + offset); readl_relaxed(base + offset); } static void u2o_clear(void __iomem *base, unsigned int offset, unsigned int value) { u32 reg; reg = readl_relaxed(base + offset); reg &= ~value; writel_relaxed(reg, base + offset); readl_relaxed(base + offset); } static void u2o_write(void __iomem *base, unsigned int offset, unsigned int value) { writel_relaxed(value, base + offset); readl_relaxed(base + offset); } static int pxa_usb_phy_init(struct phy *phy) { struct pxa_usb_phy *pxa_usb_phy = phy_get_drvdata(phy); void __iomem *base = pxa_usb_phy->base; int loops; dev_info(&phy->dev, "initializing Marvell PXA USB PHY"); /* Initialize the USB PHY power */ if (pxa_usb_phy->version == PXA_USB_PHY_PXA910) { u2o_set(base, UTMI_CTRL, (1<<UTMI_CTRL_INPKT_DELAY_SOF_SHIFT) | (1<<UTMI_CTRL_PU_REF_SHIFT)); } u2o_set(base, UTMI_CTRL, 1<<UTMI_CTRL_PLL_PWR_UP_SHIFT); u2o_set(base, UTMI_CTRL, 1<<UTMI_CTRL_PWR_UP_SHIFT); /* UTMI_PLL settings */ u2o_clear(base, UTMI_PLL, UTMI_PLL_PLLVDD18_MASK | UTMI_PLL_PLLVDD12_MASK | UTMI_PLL_PLLCALI12_MASK | UTMI_PLL_FBDIV_MASK | UTMI_PLL_REFDIV_MASK | UTMI_PLL_ICP_MASK | UTMI_PLL_KVCO_MASK); u2o_set(base, UTMI_PLL, 0xee<<UTMI_PLL_FBDIV_SHIFT | 0xb<<UTMI_PLL_REFDIV_SHIFT | 3<<UTMI_PLL_PLLVDD18_SHIFT | 3<<UTMI_PLL_PLLVDD12_SHIFT | 3<<UTMI_PLL_PLLCALI12_SHIFT | 1<<UTMI_PLL_ICP_SHIFT | 3<<UTMI_PLL_KVCO_SHIFT); /* UTMI_TX */ u2o_clear(base, UTMI_TX, UTMI_TX_REG_EXT_FS_RCAL_EN_MASK | UTMI_TX_TXVDD12_MASK | UTMI_TX_CK60_PHSEL_MASK | UTMI_TX_IMPCAL_VTH_MASK | UTMI_TX_REG_EXT_FS_RCAL_MASK | UTMI_TX_AMP_MASK); u2o_set(base, UTMI_TX, 3<<UTMI_TX_TXVDD12_SHIFT | 4<<UTMI_TX_CK60_PHSEL_SHIFT | 4<<UTMI_TX_IMPCAL_VTH_SHIFT | 8<<UTMI_TX_REG_EXT_FS_RCAL_SHIFT | 3<<UTMI_TX_AMP_SHIFT); /* UTMI_RX */ u2o_clear(base, UTMI_RX, UTMI_RX_SQ_THRESH_MASK | UTMI_REG_SQ_LENGTH_MASK); u2o_set(base, UTMI_RX, 7<<UTMI_RX_SQ_THRESH_SHIFT | 2<<UTMI_REG_SQ_LENGTH_SHIFT); /* UTMI_IVREF */ if (pxa_usb_phy->version == PXA_USB_PHY_PXA168) { /* * fixing Microsoft Altair board interface with NEC hub issue - * Set UTMI_IVREF from 0x4a3 to 0x4bf */ u2o_write(base, UTMI_IVREF, 0x4bf); } /* toggle VCOCAL_START bit of UTMI_PLL */ udelay(200); u2o_set(base, UTMI_PLL, VCOCAL_START); udelay(40); u2o_clear(base, UTMI_PLL, VCOCAL_START); /* toggle REG_RCAL_START bit of UTMI_TX */ udelay(400); u2o_set(base, UTMI_TX, REG_RCAL_START); udelay(40); u2o_clear(base, UTMI_TX, REG_RCAL_START); udelay(400); /* Make sure PHY PLL is ready */ loops = 0; while ((u2o_get(base, UTMI_PLL) & PLL_READY) == 0) { mdelay(1); loops++; if (loops > 100) { dev_warn(&phy->dev, "calibrate timeout, UTMI_PLL %x\n", u2o_get(base, UTMI_PLL)); break; } } if (pxa_usb_phy->version == PXA_USB_PHY_PXA168) { u2o_set(base, UTMI_RESERVE, 1 << 5); /* Turn on UTMI PHY OTG extension */ u2o_write(base, UTMI_OTG_ADDON, 1); } return 0; } static int pxa_usb_phy_exit(struct phy *phy) { struct pxa_usb_phy *pxa_usb_phy = phy_get_drvdata(phy); void __iomem *base = pxa_usb_phy->base; dev_info(&phy->dev, "deinitializing Marvell PXA USB PHY"); if (pxa_usb_phy->version == PXA_USB_PHY_PXA168) u2o_clear(base, UTMI_OTG_ADDON, UTMI_OTG_ADDON_OTG_ON); u2o_clear(base, UTMI_CTRL, UTMI_CTRL_RXBUF_PDWN); u2o_clear(base, UTMI_CTRL, UTMI_CTRL_TXBUF_PDWN); u2o_clear(base, UTMI_CTRL, UTMI_CTRL_USB_CLK_EN); u2o_clear(base, UTMI_CTRL, 1<<UTMI_CTRL_PWR_UP_SHIFT); u2o_clear(base, UTMI_CTRL, 1<<UTMI_CTRL_PLL_PWR_UP_SHIFT); return 0; } static const struct phy_ops pxa_usb_phy_ops = { .init = pxa_usb_phy_init, .exit = pxa_usb_phy_exit, .owner = THIS_MODULE, }; static const struct of_device_id pxa_usb_phy_of_match[] = { { .compatible = "marvell,mmp2-usb-phy", .data = (void *)PXA_USB_PHY_MMP2, }, { .compatible = "marvell,pxa910-usb-phy", .data = (void *)PXA_USB_PHY_PXA910, }, { .compatible = "marvell,pxa168-usb-phy", .data = (void *)PXA_USB_PHY_PXA168, }, { }, }; MODULE_DEVICE_TABLE(of, pxa_usb_phy_of_match); static int pxa_usb_phy_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct pxa_usb_phy *pxa_usb_phy; struct phy_provider *provider; const struct of_device_id *of_id; pxa_usb_phy = devm_kzalloc(dev, sizeof(struct pxa_usb_phy), GFP_KERNEL); if (!pxa_usb_phy) return -ENOMEM; of_id = of_match_node(pxa_usb_phy_of_match, dev->of_node); if (of_id) pxa_usb_phy->version = (enum pxa_usb_phy_version)of_id->data; else pxa_usb_phy->version = PXA_USB_PHY_MMP2; pxa_usb_phy->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(pxa_usb_phy->base)) { dev_err(dev, "failed to remap PHY regs\n"); return PTR_ERR(pxa_usb_phy->base); } pxa_usb_phy->phy = devm_phy_create(dev, NULL, &pxa_usb_phy_ops); if (IS_ERR(pxa_usb_phy->phy)) { dev_err(dev, "failed to create PHY\n"); return PTR_ERR(pxa_usb_phy->phy); } phy_set_drvdata(pxa_usb_phy->phy, pxa_usb_phy); provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (IS_ERR(provider)) { dev_err(dev, "failed to register PHY provider\n"); return PTR_ERR(provider); } if (!dev->of_node) { phy_create_lookup(pxa_usb_phy->phy, "usb", "mv-udc"); phy_create_lookup(pxa_usb_phy->phy, "usb", "pxa-u2oehci"); phy_create_lookup(pxa_usb_phy->phy, "usb", "mv-otg"); } dev_info(dev, "Marvell PXA USB PHY"); return 0; } static struct platform_driver pxa_usb_phy_driver = { .probe = pxa_usb_phy_probe, .driver = { .name = "pxa-usb-phy", .of_match_table = pxa_usb_phy_of_match, }, }; module_platform_driver(pxa_usb_phy_driver); MODULE_AUTHOR("Lubomir Rintel <lkundrak@v3.sk>"); MODULE_DESCRIPTION("Marvell PXA USB PHY Driver"); MODULE_LICENSE("GPL v2");
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