diff options
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/Kconfig | 10 | ||||
| -rw-r--r-- | drivers/usb/dwc3/Makefile | 1 | ||||
| -rw-r--r-- | drivers/usb/dwc3/dwc3-am62.c | 96 | ||||
| -rw-r--r-- | drivers/usb/dwc3/dwc3-exynos.c | 9 | ||||
| -rw-r--r-- | drivers/usb/dwc3/dwc3-imx8mp.c | 2 | ||||
| -rw-r--r-- | drivers/usb/dwc3/dwc3-keystone.c | 3 | ||||
| -rw-r--r-- | drivers/usb/dwc3/dwc3-meson-g12a.c | 6 | ||||
| -rw-r--r-- | drivers/usb/dwc3/dwc3-octeon.c | 543 | ||||
| -rw-r--r-- | drivers/usb/dwc3/dwc3-of-simple.c | 1 |
9 files changed, 618 insertions, 53 deletions
diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index be954a9abbe0..98efcbb76c88 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -168,4 +168,14 @@ config USB_DWC3_AM62 The Designware Core USB3 IP is programmed to operate in in USB 2.0 mode only. Say 'Y' or 'M' here if you have one such device + +config USB_DWC3_OCTEON + tristate "Cavium Octeon Platforms" + depends on CAVIUM_OCTEON_SOC || COMPILE_TEST + default USB_DWC3 + help + Support Cavium Octeon platforms with DesignWare Core USB3 IP. + Only the host mode is currently supported. + Say 'Y' or 'M' here if you have one such device. + endif diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index 9f66bd82b639..fe1493d4bbe5 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -54,3 +54,4 @@ obj-$(CONFIG_USB_DWC3_ST) += dwc3-st.o obj-$(CONFIG_USB_DWC3_QCOM) += dwc3-qcom.o obj-$(CONFIG_USB_DWC3_IMX8MP) += dwc3-imx8mp.o obj-$(CONFIG_USB_DWC3_XILINX) += dwc3-xilinx.o +obj-$(CONFIG_USB_DWC3_OCTEON) += dwc3-octeon.o diff --git a/drivers/usb/dwc3/dwc3-am62.c b/drivers/usb/dwc3/dwc3-am62.c index 1755f2f848c5..90a587bc29b7 100644 --- a/drivers/usb/dwc3/dwc3-am62.c +++ b/drivers/usb/dwc3/dwc3-am62.c @@ -102,7 +102,7 @@ #define DWC3_AM62_AUTOSUSPEND_DELAY 100 -struct dwc3_data { +struct dwc3_am62 { struct device *dev; void __iomem *usbss; struct clk *usb2_refclk; @@ -129,19 +129,19 @@ static const int dwc3_ti_rate_table[] = { /* in KHZ */ 52000, }; -static inline u32 dwc3_ti_readl(struct dwc3_data *data, u32 offset) +static inline u32 dwc3_ti_readl(struct dwc3_am62 *am62, u32 offset) { - return readl((data->usbss) + offset); + return readl((am62->usbss) + offset); } -static inline void dwc3_ti_writel(struct dwc3_data *data, u32 offset, u32 value) +static inline void dwc3_ti_writel(struct dwc3_am62 *am62, u32 offset, u32 value) { - writel(value, (data->usbss) + offset); + writel(value, (am62->usbss) + offset); } -static int phy_syscon_pll_refclk(struct dwc3_data *data) +static int phy_syscon_pll_refclk(struct dwc3_am62 *am62) { - struct device *dev = data->dev; + struct device *dev = am62->dev; struct device_node *node = dev->of_node; struct of_phandle_args args; struct regmap *syscon; @@ -153,16 +153,16 @@ static int phy_syscon_pll_refclk(struct dwc3_data *data) return PTR_ERR(syscon); } - data->syscon = syscon; + am62->syscon = syscon; ret = of_parse_phandle_with_fixed_args(node, "ti,syscon-phy-pll-refclk", 1, 0, &args); if (ret) return ret; - data->offset = args.args[0]; + am62->offset = args.args[0]; - ret = regmap_update_bits(data->syscon, data->offset, PHY_PLL_REFCLK_MASK, data->rate_code); + ret = regmap_update_bits(am62->syscon, am62->offset, PHY_PLL_REFCLK_MASK, am62->rate_code); if (ret) { dev_err(dev, "failed to set phy pll reference clock rate\n"); return ret; @@ -175,32 +175,32 @@ static int dwc3_ti_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct device_node *node = pdev->dev.of_node; - struct dwc3_data *data; + struct dwc3_am62 *am62; int i, ret; unsigned long rate; u32 reg; - data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); - if (!data) + am62 = devm_kzalloc(dev, sizeof(*am62), GFP_KERNEL); + if (!am62) return -ENOMEM; - data->dev = dev; - platform_set_drvdata(pdev, data); + am62->dev = dev; + platform_set_drvdata(pdev, am62); - data->usbss = devm_platform_ioremap_resource(pdev, 0); - if (IS_ERR(data->usbss)) { + am62->usbss = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(am62->usbss)) { dev_err(dev, "can't map IOMEM resource\n"); - return PTR_ERR(data->usbss); + return PTR_ERR(am62->usbss); } - data->usb2_refclk = devm_clk_get(dev, "ref"); - if (IS_ERR(data->usb2_refclk)) { + am62->usb2_refclk = devm_clk_get(dev, "ref"); + if (IS_ERR(am62->usb2_refclk)) { dev_err(dev, "can't get usb2_refclk\n"); - return PTR_ERR(data->usb2_refclk); + return PTR_ERR(am62->usb2_refclk); } /* Calculate the rate code */ - rate = clk_get_rate(data->usb2_refclk); + rate = clk_get_rate(am62->usb2_refclk); rate /= 1000; // To KHz for (i = 0; i < ARRAY_SIZE(dwc3_ti_rate_table); i++) { if (dwc3_ti_rate_table[i] == rate) @@ -212,20 +212,20 @@ static int dwc3_ti_probe(struct platform_device *pdev) return -EINVAL; } - data->rate_code = i; + am62->rate_code = i; /* Read the syscon property and set the rate code */ - ret = phy_syscon_pll_refclk(data); + ret = phy_syscon_pll_refclk(am62); if (ret) return ret; /* VBUS divider select */ - data->vbus_divider = device_property_read_bool(dev, "ti,vbus-divider"); - reg = dwc3_ti_readl(data, USBSS_PHY_CONFIG); - if (data->vbus_divider) + am62->vbus_divider = device_property_read_bool(dev, "ti,vbus-divider"); + reg = dwc3_ti_readl(am62, USBSS_PHY_CONFIG); + if (am62->vbus_divider) reg |= 1 << USBSS_PHY_VBUS_SEL_SHIFT; - dwc3_ti_writel(data, USBSS_PHY_CONFIG, reg); + dwc3_ti_writel(am62, USBSS_PHY_CONFIG, reg); pm_runtime_set_active(dev); pm_runtime_enable(dev); @@ -233,7 +233,7 @@ static int dwc3_ti_probe(struct platform_device *pdev) * Don't ignore its dependencies with its children */ pm_suspend_ignore_children(dev, false); - clk_prepare_enable(data->usb2_refclk); + clk_prepare_enable(am62->usb2_refclk); pm_runtime_get_noresume(dev); ret = of_platform_populate(node, NULL, NULL, dev); @@ -243,9 +243,9 @@ static int dwc3_ti_probe(struct platform_device *pdev) } /* Set mode valid bit to indicate role is valid */ - reg = dwc3_ti_readl(data, USBSS_MODE_CONTROL); + reg = dwc3_ti_readl(am62, USBSS_MODE_CONTROL); reg |= USBSS_MODE_VALID; - dwc3_ti_writel(data, USBSS_MODE_CONTROL, reg); + dwc3_ti_writel(am62, USBSS_MODE_CONTROL, reg); /* Device has capability to wakeup system from sleep */ device_set_wakeup_capable(dev, true); @@ -261,7 +261,7 @@ static int dwc3_ti_probe(struct platform_device *pdev) return 0; err_pm_disable: - clk_disable_unprepare(data->usb2_refclk); + clk_disable_unprepare(am62->usb2_refclk); pm_runtime_disable(dev); pm_runtime_set_suspended(dev); return ret; @@ -278,36 +278,34 @@ static int dwc3_ti_remove_core(struct device *dev, void *c) static void dwc3_ti_remove(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct dwc3_data *data = platform_get_drvdata(pdev); + struct dwc3_am62 *am62 = platform_get_drvdata(pdev); u32 reg; device_for_each_child(dev, NULL, dwc3_ti_remove_core); /* Clear mode valid bit */ - reg = dwc3_ti_readl(data, USBSS_MODE_CONTROL); + reg = dwc3_ti_readl(am62, USBSS_MODE_CONTROL); reg &= ~USBSS_MODE_VALID; - dwc3_ti_writel(data, USBSS_MODE_CONTROL, reg); + dwc3_ti_writel(am62, USBSS_MODE_CONTROL, reg); pm_runtime_put_sync(dev); - clk_disable_unprepare(data->usb2_refclk); + clk_disable_unprepare(am62->usb2_refclk); pm_runtime_disable(dev); pm_runtime_set_suspended(dev); - - platform_set_drvdata(pdev, NULL); } #ifdef CONFIG_PM static int dwc3_ti_suspend_common(struct device *dev) { - struct dwc3_data *data = dev_get_drvdata(dev); + struct dwc3_am62 *am62 = dev_get_drvdata(dev); u32 reg, current_prtcap_dir; if (device_may_wakeup(dev)) { - reg = dwc3_ti_readl(data, USBSS_CORE_STAT); + reg = dwc3_ti_readl(am62, USBSS_CORE_STAT); current_prtcap_dir = (reg & USBSS_CORE_OPERATIONAL_MODE_MASK) >> USBSS_CORE_OPERATIONAL_MODE_SHIFT; /* Set wakeup config enable bits */ - reg = dwc3_ti_readl(data, USBSS_WAKEUP_CONFIG); + reg = dwc3_ti_readl(am62, USBSS_WAKEUP_CONFIG); if (current_prtcap_dir == DWC3_GCTL_PRTCAP_HOST) { reg = USBSS_WAKEUP_CFG_LINESTATE_EN | USBSS_WAKEUP_CFG_OVERCURRENT_EN; } else { @@ -317,30 +315,30 @@ static int dwc3_ti_suspend_common(struct device *dev) * and in U2/L3 state else it causes spurious wake-up. */ } - dwc3_ti_writel(data, USBSS_WAKEUP_CONFIG, reg); + dwc3_ti_writel(am62, USBSS_WAKEUP_CONFIG, reg); /* clear wakeup status so we know what caused the wake up */ - dwc3_ti_writel(data, USBSS_WAKEUP_STAT, USBSS_WAKEUP_STAT_CLR); + dwc3_ti_writel(am62, USBSS_WAKEUP_STAT, USBSS_WAKEUP_STAT_CLR); } - clk_disable_unprepare(data->usb2_refclk); + clk_disable_unprepare(am62->usb2_refclk); return 0; } static int dwc3_ti_resume_common(struct device *dev) { - struct dwc3_data *data = dev_get_drvdata(dev); + struct dwc3_am62 *am62 = dev_get_drvdata(dev); u32 reg; - clk_prepare_enable(data->usb2_refclk); + clk_prepare_enable(am62->usb2_refclk); if (device_may_wakeup(dev)) { /* Clear wakeup config enable bits */ - dwc3_ti_writel(data, USBSS_WAKEUP_CONFIG, USBSS_WAKEUP_CFG_NONE); + dwc3_ti_writel(am62, USBSS_WAKEUP_CONFIG, USBSS_WAKEUP_CFG_NONE); } - reg = dwc3_ti_readl(data, USBSS_WAKEUP_STAT); - data->wakeup_stat = reg; + reg = dwc3_ti_readl(am62, USBSS_WAKEUP_STAT); + am62->wakeup_stat = reg; return 0; } diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index f882dd647340..5d365ca51771 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -163,6 +163,12 @@ static const struct dwc3_exynos_driverdata exynos7_drvdata = { .suspend_clk_idx = 1, }; +static const struct dwc3_exynos_driverdata exynos850_drvdata = { + .clk_names = { "bus_early", "ref" }, + .num_clks = 2, + .suspend_clk_idx = -1, +}; + static const struct of_device_id exynos_dwc3_match[] = { { .compatible = "samsung,exynos5250-dwusb3", @@ -174,6 +180,9 @@ static const struct of_device_id exynos_dwc3_match[] = { .compatible = "samsung,exynos7-dwusb3", .data = &exynos7_drvdata, }, { + .compatible = "samsung,exynos850-dwusb3", + .data = &exynos850_drvdata, + }, { } }; MODULE_DEVICE_TABLE(of, exynos_dwc3_match); diff --git a/drivers/usb/dwc3/dwc3-imx8mp.c b/drivers/usb/dwc3/dwc3-imx8mp.c index 8b9a3bb587bf..a1e15f2fffdb 100644 --- a/drivers/usb/dwc3/dwc3-imx8mp.c +++ b/drivers/usb/dwc3/dwc3-imx8mp.c @@ -10,6 +10,7 @@ #include <linux/io.h> #include <linux/kernel.h> #include <linux/module.h> +#include <linux/of.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> @@ -279,7 +280,6 @@ static void dwc3_imx8mp_remove(struct platform_device *pdev) pm_runtime_disable(dev); pm_runtime_put_noidle(dev); - platform_set_drvdata(pdev, NULL); } static int __maybe_unused dwc3_imx8mp_suspend(struct dwc3_imx8mp *dwc3_imx, diff --git a/drivers/usb/dwc3/dwc3-keystone.c b/drivers/usb/dwc3/dwc3-keystone.c index 0a09aedc2573..8899348b6276 100644 --- a/drivers/usb/dwc3/dwc3-keystone.c +++ b/drivers/usb/dwc3/dwc3-keystone.c @@ -13,6 +13,7 @@ #include <linux/platform_device.h> #include <linux/dma-mapping.h> #include <linux/io.h> +#include <linux/of.h> #include <linux/of_platform.h> #include <linux/phy/phy.h> #include <linux/pm_runtime.h> @@ -196,8 +197,6 @@ static void kdwc3_remove(struct platform_device *pdev) phy_power_off(kdwc->usb3_phy); phy_exit(kdwc->usb3_phy); phy_pm_runtime_put_sync(kdwc->usb3_phy); - - platform_set_drvdata(pdev, NULL); } static const struct of_device_id kdwc3_of_match[] = { diff --git a/drivers/usb/dwc3/dwc3-meson-g12a.c b/drivers/usb/dwc3/dwc3-meson-g12a.c index e99c7489dba0..2c07c038b584 100644 --- a/drivers/usb/dwc3/dwc3-meson-g12a.c +++ b/drivers/usb/dwc3/dwc3-meson-g12a.c @@ -926,6 +926,12 @@ static int __maybe_unused dwc3_meson_g12a_resume(struct device *dev) return ret; } + if (priv->drvdata->usb_post_init) { + ret = priv->drvdata->usb_post_init(priv); + if (ret) + return ret; + } + return 0; } diff --git a/drivers/usb/dwc3/dwc3-octeon.c b/drivers/usb/dwc3/dwc3-octeon.c new file mode 100644 index 000000000000..ff01f2c17452 --- /dev/null +++ b/drivers/usb/dwc3/dwc3-octeon.c @@ -0,0 +1,543 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * DWC3 glue for Cavium Octeon III SOCs. + * + * Copyright (C) 2010-2017 Cavium Networks + * Copyright (C) 2023 RACOM s.r.o. + */ + +#include <linux/bitfield.h> +#include <linux/bits.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of_platform.h> + +/* + * USB Control Register + */ +#define USBDRD_UCTL_CTL 0x00 +/* BIST fast-clear mode select. A BIST run with this bit set + * clears all entries in USBH RAMs to 0x0. + */ +# define USBDRD_UCTL_CTL_CLEAR_BIST BIT_ULL(63) +/* 1 = Start BIST and cleared by hardware */ +# define USBDRD_UCTL_CTL_START_BIST BIT_ULL(62) +/* Reference clock select for SuperSpeed and HighSpeed PLLs: + * 0x0 = Both PLLs use DLMC_REF_CLK0 for reference clock + * 0x1 = Both PLLs use DLMC_REF_CLK1 for reference clock + * 0x2 = SuperSpeed PLL uses DLMC_REF_CLK0 for reference clock & + * HighSpeed PLL uses PLL_REF_CLK for reference clck + * 0x3 = SuperSpeed PLL uses DLMC_REF_CLK1 for reference clock & + * HighSpeed PLL uses PLL_REF_CLK for reference clck + */ +# define USBDRD_UCTL_CTL_REF_CLK_SEL GENMASK_ULL(61, 60) +/* 1 = Spread-spectrum clock enable, 0 = SS clock disable */ +# define USBDRD_UCTL_CTL_SSC_EN BIT_ULL(59) +/* Spread-spectrum clock modulation range: + * 0x0 = -4980 ppm downspread + * 0x1 = -4492 ppm downspread + * 0x2 = -4003 ppm downspread + * 0x3 - 0x7 = Reserved + */ +# define USBDRD_UCTL_CTL_SSC_RANGE GENMASK_ULL(58, 56) +/* Enable non-standard oscillator frequencies: + * [55:53] = modules -1 + * [52:47] = 2's complement push amount, 0 = Feature disabled + */ +# define USBDRD_UCTL_CTL_SSC_REF_CLK_SEL GENMASK_ULL(55, 47) +/* Reference clock multiplier for non-standard frequencies: + * 0x19 = 100MHz on DLMC_REF_CLK* if REF_CLK_SEL = 0x0 or 0x1 + * 0x28 = 125MHz on DLMC_REF_CLK* if REF_CLK_SEL = 0x0 or 0x1 + * 0x32 = 50MHz on DLMC_REF_CLK* if REF_CLK_SEL = 0x0 or 0x1 + * Other Values = Reserved + */ +# define USBDRD_UCTL_CTL_MPLL_MULTIPLIER GENMASK_ULL(46, 40) +/* Enable reference clock to prescaler for SuperSpeed functionality. + * Should always be set to "1" + */ +# define USBDRD_UCTL_CTL_REF_SSP_EN BIT_ULL(39) +/* Divide the reference clock by 2 before entering the + * REF_CLK_FSEL divider: + * If REF_CLK_SEL = 0x0 or 0x1, then only 0x0 is legal + * If REF_CLK_SEL = 0x2 or 0x3, then: + * 0x1 = DLMC_REF_CLK* is 125MHz + * 0x0 = DLMC_REF_CLK* is another supported frequency + */ +# define USBDRD_UCTL_CTL_REF_CLK_DIV2 BIT_ULL(38) +/* Select reference clock freqnuency for both PLL blocks: + * 0x27 = REF_CLK_SEL is 0x0 or 0x1 + * 0x07 = REF_CLK_SEL is 0x2 or 0x3 + */ +# define USBDRD_UCTL_CTL_REF_CLK_FSEL GENMASK_ULL(37, 32) +/* Controller clock enable. */ +# define USBDRD_UCTL_CTL_H_CLK_EN BIT_ULL(30) +/* Select bypass input to controller clock divider: + * 0x0 = Use divided coprocessor clock from H_CLKDIV + * 0x1 = Use clock from GPIO pins + */ +# define USBDRD_UCTL_CTL_H_CLK_BYP_SEL BIT_ULL(29) +/* Reset controller clock divider. */ +# define USBDRD_UCTL_CTL_H_CLKDIV_RST BIT_ULL(28) +/* Clock divider select: + * 0x0 = divide by 1 + * 0x1 = divide by 2 + * 0x2 = divide by 4 + * 0x3 = divide by 6 + * 0x4 = divide by 8 + * 0x5 = divide by 16 + * 0x6 = divide by 24 + * 0x7 = divide by 32 + */ +# define USBDRD_UCTL_CTL_H_CLKDIV_SEL GENMASK_ULL(26, 24) +/* USB3 port permanently attached: 0x0 = No, 0x1 = Yes */ +# define USBDRD_UCTL_CTL_USB3_PORT_PERM_ATTACH BIT_ULL(21) +/* USB2 port permanently attached: 0x0 = No, 0x1 = Yes */ +# define USBDRD_UCTL_CTL_USB2_PORT_PERM_ATTACH BIT_ULL(20) +/* Disable SuperSpeed PHY: 0x0 = No, 0x1 = Yes */ +# define USBDRD_UCTL_CTL_USB3_PORT_DISABLE BIT_ULL(18) +/* Disable HighSpeed PHY: 0x0 = No, 0x1 = Yes */ +# define USBDRD_UCTL_CTL_USB2_PORT_DISABLE BIT_ULL(16) +/* Enable PHY SuperSpeed block power: 0x0 = No, 0x1 = Yes */ +# define USBDRD_UCTL_CTL_SS_POWER_EN BIT_ULL(14) +/* Enable PHY HighSpeed block power: 0x0 = No, 0x1 = Yes */ +# define USBDRD_UCTL_CTL_HS_POWER_EN BIT_ULL(12) +/* Enable USB UCTL interface clock: 0xx = No, 0x1 = Yes */ +# define USBDRD_UCTL_CTL_CSCLK_EN BIT_ULL(4) +/* Controller mode: 0x0 = Host, 0x1 = Device */ +# define USBDRD_UCTL_CTL_DRD_MODE BIT_ULL(3) +/* PHY reset */ +# define USBDRD_UCTL_CTL_UPHY_RST BIT_ULL(2) +/* Software reset UAHC */ +# define USBDRD_UCTL_CTL_UAHC_RST BIT_ULL(1) +/* Software resets UCTL */ +# define USBDRD_UCTL_CTL_UCTL_RST BIT_ULL(0) + +#define USBDRD_UCTL_BIST_STATUS 0x08 +#define USBDRD_UCTL_SPARE0 0x10 +#define USBDRD_UCTL_INTSTAT 0x30 +#define USBDRD_UCTL_PORT_CFG_HS(port) (0x40 + (0x20 * port)) +#define USBDRD_UCTL_PORT_CFG_SS(port) (0x48 + (0x20 * port)) +#define USBDRD_UCTL_PORT_CR_DBG_CFG(port) (0x50 + (0x20 * port)) +#define USBDRD_UCTL_PORT_CR_DBG_STATUS(port) (0x58 + (0x20 * port)) + +/* + * UCTL Configuration Register + */ +#define USBDRD_UCTL_HOST_CFG 0xe0 +/* Indicates minimum value of all received BELT values */ +# define USBDRD_UCTL_HOST_CFG_HOST_CURRENT_BELT GENMASK_ULL(59, 48) +/* HS jitter adjustment */ +# define USBDRD_UCTL_HOST_CFG_FLA GENMASK_ULL(37, 32) +/* Bus-master enable: 0x0 = Disabled (stall DMAs), 0x1 = enabled */ +# define USBDRD_UCTL_HOST_CFG_BME BIT_ULL(28) +/* Overcurrent protection enable: 0x0 = unavailable, 0x1 = available */ +# define USBDRD_UCTL_HOST_OCI_EN BIT_ULL(27) +/* Overcurrent sene selection: + * 0x0 = Overcurrent indication from off-chip is active-low + * 0x1 = Overcurrent indication from off-chip is active-high + */ +# define USBDRD_UCTL_HOST_OCI_ACTIVE_HIGH_EN BIT_ULL(26) +/* Port power control enable: 0x0 = unavailable, 0x1 = available */ +# define USBDRD_UCTL_HOST_PPC_EN BIT_ULL(25) +/* Port power control sense selection: + * 0x0 = Port power to off-chip is active-low + * 0x1 = Port power to off-chip is active-high + */ +# define USBDRD_UCTL_HOST_PPC_ACTIVE_HIGH_EN BIT_ULL(24) + +/* + * UCTL Shim Features Register + */ +#define USBDRD_UCTL_SHIM_CFG 0xe8 +/* Out-of-bound UAHC register access: 0 = read, 1 = write */ +# define USBDRD_UCTL_SHIM_CFG_XS_NCB_OOB_WRN BIT_ULL(63) +/* SRCID error log for out-of-bound UAHC register access: + * [59:58] = chipID + * [57] = Request source: 0 = core, 1 = NCB-device + * [56:51] = Core/NCB-device number, [56] always 0 for NCB devices + * [50:48] = SubID + */ +# define USBDRD_UCTL_SHIM_CFG_XS_NCB_OOB_OSRC GENMASK_ULL(59, 48) +/* Error log for bad UAHC DMA access: 0 = Read log, 1 = Write log */ +# define USBDRD_UCTL_SHIM_CFG_XM_BAD_DMA_WRN BIT_ULL(47) +/* Encoded error type for bad UAHC DMA */ +# define USBDRD_UCTL_SHIM_CFG_XM_BAD_DMA_TYPE GENMASK_ULL(43, 40) +/* Select the IOI read command used by DMA accesses */ +# define USBDRD_UCTL_SHIM_CFG_DMA_READ_CMD BIT_ULL(12) +/* Select endian format for DMA accesses to the L2C: + * 0x0 = Little endian + * 0x1 = Big endian + * 0x2 = Reserved + * 0x3 = Reserved + */ +# define USBDRD_UCTL_SHIM_CFG_DMA_ENDIAN_MODE GENMASK_ULL(9, 8) +/* Select endian format for IOI CSR access to UAHC: + * 0x0 = Little endian + * 0x1 = Big endian + * 0x2 = Reserved + * 0x3 = Reserved + */ +# define USBDRD_UCTL_SHIM_CFG_CSR_ENDIAN_MODE GENMASK_ULL(1, 0) + +#define USBDRD_UCTL_ECC 0xf0 +#define USBDRD_UCTL_SPARE1 0xf8 + +struct dwc3_octeon { + struct device *dev; + void __iomem *base; +}; + +#define DWC3_GPIO_POWER_NONE (-1) + +#ifdef CONFIG_CAVIUM_OCTEON_SOC +#include <asm/octeon/octeon.h> +static inline uint64_t dwc3_octeon_readq(void __iomem *addr) +{ + return cvmx_readq_csr(addr); +} + +static inline void dwc3_octeon_writeq(void __iomem *base, uint64_t val) +{ + cvmx_writeq_csr(base, val); +} + +static void dwc3_octeon_config_gpio(int index, int gpio) +{ + union cvmx_gpio_bit_cfgx gpio_bit; + + if ((OCTEON_IS_MODEL(OCTEON_CN73XX) || + OCTEON_IS_MODEL(OCTEON_CNF75XX)) + && gpio <= 31) { + gpio_bit.u64 = cvmx_read_csr(CVMX_GPIO_BIT_CFGX(gpio)); + gpio_bit.s.tx_oe = 1; + gpio_bit.s.output_sel = (index == 0 ? 0x14 : 0x15); + cvmx_write_csr(CVMX_GPIO_BIT_CFGX(gpio), gpio_bit.u64); + } else if (gpio <= 15) { + gpio_bit.u64 = cvmx_read_csr(CVMX_GPIO_BIT_CFGX(gpio)); + gpio_bit.s.tx_oe = 1; + gpio_bit.s.output_sel = (index == 0 ? 0x14 : 0x19); + cvmx_write_csr(CVMX_GPIO_BIT_CFGX(gpio), gpio_bit.u64); + } else { + gpio_bit.u64 = cvmx_read_csr(CVMX_GPIO_XBIT_CFGX(gpio)); + gpio_bit.s.tx_oe = 1; + gpio_bit.s.output_sel = (index == 0 ? 0x14 : 0x19); + cvmx_write_csr(CVMX_GPIO_XBIT_CFGX(gpio), gpio_bit.u64); + } +} +#else +static inline uint64_t dwc3_octeon_readq(void __iomem *addr) +{ + return 0; +} + +static inline void dwc3_octeon_writeq(void __iomem *base, uint64_t val) { } + +static inline void dwc3_octeon_config_gpio(int index, int gpio) { } + +static uint64_t octeon_get_io_clock_rate(void) +{ + return 150000000; +} +#endif + +static int dwc3_octeon_get_divider(void) +{ + static const uint8_t clk_div[] = { 1, 2, 4, 6, 8, 16, 24, 32 }; + int div = 0; + + while (div < ARRAY_SIZE(clk_div)) { + uint64_t rate = octeon_get_io_clock_rate() / clk_div[div]; + if (rate <= 300000000 && rate >= 150000000) + return div; + div++; + } + + return -EINVAL; +} + +static int dwc3_octeon_setup(struct dwc3_octeon *octeon, + int ref_clk_sel, int ref_clk_fsel, int mpll_mul, + int power_gpio, int power_active_low) +{ + u64 val; + int div; + struct device *dev = octeon->dev; + void __iomem *uctl_ctl_reg = octeon->base + USBDRD_UCTL_CTL; + void __iomem *uctl_host_cfg_reg = octeon->base + USBDRD_UCTL_HOST_CFG; + + /* + * Step 1: Wait for all voltages to be stable...that surely + * happened before starting the kernel. SKIP + */ + + /* Step 2: Select GPIO for overcurrent indication, if desired. SKIP */ + + /* Step 3: Assert all resets. */ + val = dwc3_octeon_readq(uctl_ctl_reg); + val |= USBDRD_UCTL_CTL_UPHY_RST | + USBDRD_UCTL_CTL_UAHC_RST | + USBDRD_UCTL_CTL_UCTL_RST; + dwc3_octeon_writeq(uctl_ctl_reg, val); + + /* Step 4a: Reset the clock dividers. */ + val = dwc3_octeon_readq(uctl_ctl_reg); + val |= USBDRD_UCTL_CTL_H_CLKDIV_RST; + dwc3_octeon_writeq(uctl_ctl_reg, val); + + /* Step 4b: Select controller clock frequency. */ + div = dwc3_octeon_get_divider(); + if (div < 0) { + dev_err(dev, "clock divider invalid\n"); + return div; + } + val = dwc3_octeon_readq(uctl_ctl_reg); + val &= ~USBDRD_UCTL_CTL_H_CLKDIV_SEL; + val |= FIELD_PREP(USBDRD_UCTL_CTL_H_CLKDIV_SEL, div); + val |= USBDRD_UCTL_CTL_H_CLK_EN; + dwc3_octeon_writeq(uctl_ctl_reg, val); + val = dwc3_octeon_readq(uctl_ctl_reg); + if ((div != FIELD_GET(USBDRD_UCTL_CTL_H_CLKDIV_SEL, val)) || + (!(FIELD_GET(USBDRD_UCTL_CTL_H_CLK_EN, val)))) { + dev_err(dev, "clock init failure (UCTL_CTL=%016llx)\n", val); + return -EINVAL; + } + + /* Step 4c: Deassert the controller clock divider reset. */ + val &= ~USBDRD_UCTL_CTL_H_CLKDIV_RST; + dwc3_octeon_writeq(uctl_ctl_reg, val); + + /* Step 5a: Reference clock configuration. */ + val = dwc3_octeon_readq(uctl_ctl_reg); + val &= ~USBDRD_UCTL_CTL_REF_CLK_DIV2; + val &= ~USBDRD_UCTL_CTL_REF_CLK_SEL; + val |= FIELD_PREP(USBDRD_UCTL_CTL_REF_CLK_SEL, ref_clk_sel); + + val &= ~USBDRD_UCTL_CTL_REF_CLK_FSEL; + val |= FIELD_PREP(USBDRD_UCTL_CTL_REF_CLK_FSEL, ref_clk_fsel); + + val &= ~USBDRD_UCTL_CTL_MPLL_MULTIPLIER; + val |= FIELD_PREP(USBDRD_UCTL_CTL_MPLL_MULTIPLIER, mpll_mul); + + /* Step 5b: Configure and enable spread-spectrum for SuperSpeed. */ + val |= USBDRD_UCTL_CTL_SSC_EN; + + /* Step 5c: Enable SuperSpeed. */ + val |= USBDRD_UCTL_CTL_REF_SSP_EN; + + /* Step 5d: Configure PHYs. SKIP */ + + /* Step 6a & 6b: Power up PHYs. */ + val |= USBDRD_UCTL_CTL_HS_POWER_EN; + val |= USBDRD_UCTL_CTL_SS_POWER_EN; + dwc3_octeon_writeq(uctl_ctl_reg, val); + + /* Step 7: Wait 10 controller-clock cycles to take effect. */ + udelay(10); + + /* Step 8a: Deassert UCTL reset signal. */ + val = dwc3_octeon_readq(uctl_ctl_reg); + val &= ~USBDRD_UCTL_CTL_UCTL_RST; + dwc3_octeon_writeq(uctl_ctl_reg, val); + + /* Step 8b: Wait 10 controller-clock cycles. */ + udelay(10); + + /* Step 8c: Setup power control. */ + val = dwc3_octeon_readq(uctl_host_cfg_reg); + val |= USBDRD_UCTL_HOST_PPC_EN; + if (power_gpio == DWC3_GPIO_POWER_NONE) { + val &= ~USBDRD_UCTL_HOST_PPC_EN; + } else { + val |= USBDRD_UCTL_HOST_PPC_EN; + dwc3_octeon_config_gpio(((__force uintptr_t)octeon->base >> 24) & 1, + power_gpio); + dev_dbg(dev, "power control is using gpio%d\n", power_gpio); + } + if (power_active_low) + val &= ~USBDRD_UCTL_HOST_PPC_ACTIVE_HIGH_EN; + else + val |= USBDRD_UCTL_HOST_PPC_ACTIVE_HIGH_EN; + dwc3_octeon_writeq(uctl_host_cfg_reg, val); + + /* Step 8d: Deassert UAHC reset signal. */ + val = dwc3_octeon_readq(uctl_ctl_reg); + val &= ~USBDRD_UCTL_CTL_UAHC_RST; + dwc3_octeon_writeq(uctl_ctl_reg, val); + + /* Step 8e: Wait 10 controller-clock cycles. */ + udelay(10); + + /* Step 9: Enable conditional coprocessor clock of UCTL. */ + val = dwc3_octeon_readq(uctl_ctl_reg); + val |= USBDRD_UCTL_CTL_CSCLK_EN; + dwc3_octeon_writeq(uctl_ctl_reg, val); + + /*Step 10: Set for host mode only. */ + val = dwc3_octeon_readq(uctl_ctl_reg); + val &= ~USBDRD_UCTL_CTL_DRD_MODE; + dwc3_octeon_writeq(uctl_ctl_reg, val); + + return 0; +} + +static void dwc3_octeon_set_endian_mode(struct dwc3_octeon *octeon) +{ + u64 val; + void __iomem *uctl_shim_cfg_reg = octeon->base + USBDRD_UCTL_SHIM_CFG; + + val = dwc3_octeon_readq(uctl_shim_cfg_reg); + val &= ~USBDRD_UCTL_SHIM_CFG_DMA_ENDIAN_MODE; + val &= ~USBDRD_UCTL_SHIM_CFG_CSR_ENDIAN_MODE; +#ifdef __BIG_ENDIAN + val |= FIELD_PREP(USBDRD_UCTL_SHIM_CFG_DMA_ENDIAN_MODE, 1); + val |= FIELD_PREP(USBDRD_UCTL_SHIM_CFG_CSR_ENDIAN_MODE, 1); +#endif + dwc3_octeon_writeq(uctl_shim_cfg_reg, val); +} + +static void dwc3_octeon_phy_reset(struct dwc3_octeon *octeon) +{ + u64 val; + void __iomem *uctl_ctl_reg = octeon->base + USBDRD_UCTL_CTL; + + val = dwc3_octeon_readq(uctl_ctl_reg); + val &= ~USBDRD_UCTL_CTL_UPHY_RST; + dwc3_octeon_writeq(uctl_ctl_reg, val); +} + +static int dwc3_octeon_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + struct dwc3_octeon *octeon; + const char *hs_clock_type, *ss_clock_type; + int ref_clk_sel, ref_clk_fsel, mpll_mul; + int power_active_low, power_gpio; + int err, len; + u32 clock_rate; + + if (of_property_read_u32(node, "refclk-frequency", &clock_rate)) { + dev_err(dev, "No UCTL \"refclk-frequency\"\n"); + return -EINVAL; + } + if (of_property_read_string(node, "refclk-type-ss", &ss_clock_type)) { + dev_err(dev, "No UCTL \"refclk-type-ss\"\n"); + return -EINVAL; + } + if (of_property_read_string(node, "refclk-type-hs", &hs_clock_type)) { + dev_err(dev, "No UCTL \"refclk-type-hs\"\n"); + return -EINVAL; + } + + ref_clk_sel = 2; + if (strcmp("dlmc_ref_clk0", ss_clock_type) == 0) { + if (strcmp(hs_clock_type, "dlmc_ref_clk0") == 0) + ref_clk_sel = 0; + else if (strcmp(hs_clock_type, "pll_ref_clk")) + dev_warn(dev, "Invalid HS clock type %s, using pll_ref_clk instead\n", + hs_clock_type); + } else if (strcmp(ss_clock_type, "dlmc_ref_clk1") == 0) { + if (strcmp(hs_clock_type, "dlmc_ref_clk1") == 0) { + ref_clk_sel = 1; + } else { + ref_clk_sel = 3; + if (strcmp(hs_clock_type, "pll_ref_clk")) + dev_warn(dev, "Invalid HS clock type %s, using pll_ref_clk instead\n", + hs_clock_type); + } + } else { + dev_warn(dev, "Invalid SS clock type %s, using dlmc_ref_clk0 instead\n", + ss_clock_type); + } + + ref_clk_fsel = 0x07; + switch (clock_rate) { + default: + dev_warn(dev, "Invalid ref_clk %u, using 100000000 instead\n", + clock_rate); + fallthrough; + case 100000000: + mpll_mul = 0x19; + if (ref_clk_sel < 2) + ref_clk_fsel = 0x27; + break; + case 50000000: + mpll_mul = 0x32; + break; + case 125000000: + mpll_mul = 0x28; + break; + } + + power_gpio = DWC3_GPIO_POWER_NONE; + power_active_low = 0; + if (of_find_property(node, "power", &len)) { + u32 gpio_pwr[3]; + + switch (len) { + case 8: + of_property_read_u32_array(node, "power", gpio_pwr, 2); + break; + case 12: + of_property_read_u32_array(node, "power", gpio_pwr, 3); + power_active_low = gpio_pwr[2] & 0x01; + break; + default: + dev_err(dev, "invalid power configuration\n"); + return -EINVAL; + } + power_gpio = gpio_pwr[1]; + } + + octeon = devm_kzalloc(dev, sizeof(*octeon), GFP_KERNEL); + if (!octeon) + return -ENOMEM; + + octeon->dev = dev; + octeon->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(octeon->base)) + return PTR_ERR(octeon->base); + + err = dwc3_octeon_setup(octeon, ref_clk_sel, ref_clk_fsel, mpll_mul, + power_gpio, power_active_low); + if (err) + return err; + + dwc3_octeon_set_endian_mode(octeon); + dwc3_octeon_phy_reset(octeon); + + platform_set_drvdata(pdev, octeon); + + return of_platform_populate(node, NULL, NULL, dev); +} + +static void dwc3_octeon_remove(struct platform_device *pdev) +{ + struct dwc3_octeon *octeon = platform_get_drvdata(pdev); + + of_platform_depopulate(octeon->dev); +} + +static const struct of_device_id dwc3_octeon_of_match[] = { + { .compatible = "cavium,octeon-7130-usb-uctl" }, + { }, +}; +MODULE_DEVICE_TABLE(of, dwc3_octeon_of_match); + +static struct platform_driver dwc3_octeon_driver = { + .probe = dwc3_octeon_probe, + .remove_new = dwc3_octeon_remove, + .driver = { + .name = "dwc3-octeon", + .of_match_table = dwc3_octeon_of_match, + }, +}; +module_platform_driver(dwc3_octeon_driver); + +MODULE_ALIAS("platform:dwc3-octeon"); +MODULE_AUTHOR("Ladislav Michl <ladis@linux-mips.org>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("DesignWare USB3 OCTEON III Glue Layer"); diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c index 7e6ad8fe61a5..d1539fc9eabd 100644 --- a/drivers/usb/dwc3/dwc3-of-simple.c +++ b/drivers/usb/dwc3/dwc3-of-simple.c @@ -170,7 +170,6 @@ static const struct dev_pm_ops dwc3_of_simple_dev_pm_ops = { static const struct of_device_id of_dwc3_simple_match[] = { { .compatible = "rockchip,rk3399-dwc3" }, - { .compatible = "cavium,octeon-7130-usb-uctl" }, { .compatible = "sprd,sc9860-dwc3" }, { .compatible = "allwinner,sun50i-h6-dwc3" }, { .compatible = "hisilicon,hi3670-dwc3" }, |