From patchwork Thu Aug 6 18:20:25 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11703891 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D2DF41510 for ; Thu, 6 Aug 2020 18:28:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 332C02310C for ; Thu, 6 Aug 2020 18:28:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596738535; bh=DPZaom5NAT2KivsfSxfg/NbbYwOmpa1upzg9nMe0pn4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=j6cg/HmNf12LXYhBMDzoUYXPPHFUuuRhOGaeP0kaQklZ0rzDrG+mkj4s7MAR0Mtkk 2PWBS4po5omaXY+Q9mQWmMCt3ZNb9Z2Tln4EP7RT4bIWGI360xcx0I4PSZ8o79ai21 j17lBHir5ozcht6qEmzPCHAyGcR81VYke1bPRwAQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728022AbgHFS2A (ORCPT ); Thu, 6 Aug 2020 14:28:00 -0400 Received: from mail.kernel.org ([198.145.29.99]:51158 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728341AbgHFSXc (ORCPT ); Thu, 6 Aug 2020 14:23:32 -0400 Received: from localhost.localdomain (unknown [194.230.155.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5165E22D04; Thu, 6 Aug 2020 18:22:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596738133; bh=DPZaom5NAT2KivsfSxfg/NbbYwOmpa1upzg9nMe0pn4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=br6SESXvsfakDzF/1hP0mUDf1oXB70eWCEQ3qKKN4rKgzInWtHHsBHxX7FsBumrlM KVyZKT299K/KhuKeLy4D9GiQf3wrSnoelofZuN05GtEz5b2oKezgkhRVlQ9nvg3CUl jO7awguu5PH2xrZFl15Fm8gfnewVTkzd8ShLjiKc= From: Krzysztof Kozlowski To: linux-kernel@vger.kernel.org Cc: Arnd Bergmann , Krzysztof Kozlowski , Russell King , Felipe Balbi , Greg Kroah-Hartman , Kukjin Kim , linux-arm-kernel@lists.infradead.org, linux-usb@vger.kernel.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH v2 08/41] usb: gadget: s3c: use platform resources Date: Thu, 6 Aug 2020 20:20:25 +0200 Message-Id: <20200806182059.2431-8-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200806181932.2253-1-krzk@kernel.org> References: <20200806181932.2253-1-krzk@kernel.org> MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Arnd Bergmann The resources are correctly initialized, so just use them instead of relying on hardcoded data from platform headers. Signed-off-by: Arnd Bergmann Signed-off-by: Krzysztof Kozlowski Acked-by: Felipe Balbi --- drivers/usb/gadget/udc/s3c2410_udc.c | 31 +++++++------------ drivers/usb/gadget/udc/s3c2410_udc.h | 1 + .../usb/gadget/udc/s3c2410_udc_regs.h | 0 3 files changed, 12 insertions(+), 20 deletions(-) rename arch/arm/plat-samsung/include/plat/regs-udc.h => drivers/usb/gadget/udc/s3c2410_udc_regs.h (100%) diff --git a/drivers/usb/gadget/udc/s3c2410_udc.c b/drivers/usb/gadget/udc/s3c2410_udc.c index e875a0b967c0..f1ea51476add 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.c +++ b/drivers/usb/gadget/udc/s3c2410_udc.c @@ -36,15 +36,11 @@ #include #include #include -#include -#include - -#include #include - #include "s3c2410_udc.h" +#include "s3c2410_udc_regs.h" #define DRIVER_DESC "S3C2410 USB Device Controller Gadget" #define DRIVER_AUTHOR "Herbert Pötzl , " \ @@ -57,6 +53,7 @@ static struct s3c2410_udc *the_controller; static struct clk *udc_clock; static struct clk *usb_bus_clock; static void __iomem *base_addr; +static int irq_usbd; static u64 rsrc_start; static u64 rsrc_len; static struct dentry *s3c2410_udc_debugfs_root; @@ -835,8 +832,6 @@ static void s3c2410_udc_handle_ep(struct s3c2410_ep *ep) } } -#include - /* * s3c2410_udc_irq - interrupt handler */ @@ -977,7 +972,7 @@ static irqreturn_t s3c2410_udc_irq(int dummy, void *_dev) } } - dprintk(DEBUG_VERBOSE, "irq: %d s3c2410_udc_done.\n", IRQ_USBD); + dprintk(DEBUG_VERBOSE, "irq: %d s3c2410_udc_done.\n", irq_usbd); /* Restore old index */ udc_write(idx, S3C2410_UDC_INDEX_REG); @@ -1777,13 +1772,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) spin_lock_init(&udc->lock); udc_info = dev_get_platdata(&pdev->dev); - rsrc_start = S3C2410_PA_USBDEV; - rsrc_len = S3C24XX_SZ_USBDEV; - - if (!request_mem_region(rsrc_start, rsrc_len, gadget_name)) - return -EBUSY; - - base_addr = ioremap(rsrc_start, rsrc_len); + base_addr = devm_platform_ioremap_resource(pdev, 0); if (!base_addr) { retval = -ENOMEM; goto err_mem; @@ -1795,17 +1784,19 @@ static int s3c2410_udc_probe(struct platform_device *pdev) s3c2410_udc_disable(udc); s3c2410_udc_reinit(udc); + irq_usbd = platform_get_irq(pdev, 0); + /* irq setup after old hardware state is cleaned up */ - retval = request_irq(IRQ_USBD, s3c2410_udc_irq, + retval = request_irq(irq_usbd, s3c2410_udc_irq, 0, gadget_name, udc); if (retval != 0) { - dev_err(dev, "cannot get irq %i, err %d\n", IRQ_USBD, retval); + dev_err(dev, "cannot get irq %i, err %d\n", irq_usbd, retval); retval = -EBUSY; goto err_map; } - dev_dbg(dev, "got irq %i\n", IRQ_USBD); + dev_dbg(dev, "got irq %i\n", irq_usbd); if (udc_info && udc_info->vbus_pin > 0) { retval = gpio_request(udc_info->vbus_pin, "udc vbus"); @@ -1872,7 +1863,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) if (udc_info && udc_info->vbus_pin > 0) gpio_free(udc_info->vbus_pin); err_int: - free_irq(IRQ_USBD, udc); + free_irq(irq_usbd, udc); err_map: iounmap(base_addr); err_mem: @@ -1906,7 +1897,7 @@ static int s3c2410_udc_remove(struct platform_device *pdev) free_irq(irq, udc); } - free_irq(IRQ_USBD, udc); + free_irq(irq_usbd, udc); iounmap(base_addr); release_mem_region(rsrc_start, rsrc_len); diff --git a/drivers/usb/gadget/udc/s3c2410_udc.h b/drivers/usb/gadget/udc/s3c2410_udc.h index bdcaa8dd300f..68bdf3e5aac2 100644 --- a/drivers/usb/gadget/udc/s3c2410_udc.h +++ b/drivers/usb/gadget/udc/s3c2410_udc.h @@ -90,6 +90,7 @@ struct s3c2410_udc { unsigned req_pending : 1; u8 vbus; struct dentry *regs_info; + int irq; }; #define to_s3c2410(g) (container_of((g), struct s3c2410_udc, gadget)) diff --git a/arch/arm/plat-samsung/include/plat/regs-udc.h b/drivers/usb/gadget/udc/s3c2410_udc_regs.h similarity index 100% rename from arch/arm/plat-samsung/include/plat/regs-udc.h rename to drivers/usb/gadget/udc/s3c2410_udc_regs.h From patchwork Thu Aug 6 18:20:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11704061 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8C0BC1392 for ; 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Thu, 6 Aug 2020 18:22:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1596738136; bh=41DB04g7bnvHlbjYbY4BAew/yHdDAUU2eHUM/YHd6eI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SsUMJwrOd4mJyKpNs/CIMXd3noEkrz6TxA8z2JExxEjdCSb3IJJHPuk97wtbWPoNL 32tVAIKOcDTCI80KbmrW63jnaPqRJp0bKqJ+sE67JAp/icDA8uMjs47IXI8dmZquco 2hUCicQHgZrDi4A0MumUHAwH2dDYkERdiTunAEqM= From: Krzysztof Kozlowski To: linux-kernel@vger.kernel.org Cc: Arnd Bergmann , Krzysztof Kozlowski , Russell King , Felipe Balbi , Greg Kroah-Hartman , linux-arm-kernel@lists.infradead.org, linux-usb@vger.kernel.org Subject: [PATCH v2 09/41] usb: gadget: s3c-hsudc: remove platform header dependency Date: Thu, 6 Aug 2020 20:20:26 +0200 Message-Id: <20200806182059.2431-9-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200806181932.2253-1-krzk@kernel.org> References: <20200806181932.2253-1-krzk@kernel.org> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Arnd Bergmann There is no real phy driver, so s3c-hsudc just pokes the registers itself. Improve this a little by making it a platform data callback like we do for gpios. There is only one board using this driver, and it's unlikely that another would be added, so this is a minimal workaround. Signed-off-by: Arnd Bergmann [krzk: Include regs-s3c2443-clock.h in ifdef to fixup build on s3c6400] Signed-off-by: Krzysztof Kozlowski --- Changes since v1: 1. Include regs-s3c2443-clock.h in ifdef to fixup build on s3c640 --- .../include/mach/regs-s3c2443-clock.h | 49 +++++++++++++++++ arch/arm/plat-samsung/devs.c | 6 ++ drivers/usb/gadget/udc/s3c-hsudc.c | 55 ++----------------- include/linux/platform_data/s3c-hsudc.h | 2 + 4 files changed, 61 insertions(+), 51 deletions(-) diff --git a/arch/arm/mach-s3c24xx/include/mach/regs-s3c2443-clock.h b/arch/arm/mach-s3c24xx/include/mach/regs-s3c2443-clock.h index 6bf924612b06..682759549e63 100644 --- a/arch/arm/mach-s3c24xx/include/mach/regs-s3c2443-clock.h +++ b/arch/arm/mach-s3c24xx/include/mach/regs-s3c2443-clock.h @@ -10,6 +10,8 @@ #ifndef __ASM_ARM_REGS_S3C2443_CLOCK #define __ASM_ARM_REGS_S3C2443_CLOCK +#include + #define S3C2443_CLKREG(x) ((x) + S3C24XX_VA_CLKPWR) #define S3C2443_PLLCON_MDIVSHIFT 16 @@ -184,5 +186,52 @@ s3c2443_get_epll(unsigned int pllval, unsigned int baseclk) return (unsigned int)fvco; } +static inline void s3c_hsudc_init_phy(void) +{ + u32 cfg; + + cfg = readl(S3C2443_PWRCFG) | S3C2443_PWRCFG_USBPHY; + writel(cfg, S3C2443_PWRCFG); + + cfg = readl(S3C2443_URSTCON); + cfg |= (S3C2443_URSTCON_FUNCRST | S3C2443_URSTCON_PHYRST); + writel(cfg, S3C2443_URSTCON); + mdelay(1); + + cfg = readl(S3C2443_URSTCON); + cfg &= ~(S3C2443_URSTCON_FUNCRST | S3C2443_URSTCON_PHYRST); + writel(cfg, S3C2443_URSTCON); + + cfg = readl(S3C2443_PHYCTRL); + cfg &= ~(S3C2443_PHYCTRL_CLKSEL | S3C2443_PHYCTRL_DSPORT); + cfg |= (S3C2443_PHYCTRL_EXTCLK | S3C2443_PHYCTRL_PLLSEL); + writel(cfg, S3C2443_PHYCTRL); + + cfg = readl(S3C2443_PHYPWR); + cfg &= ~(S3C2443_PHYPWR_FSUSPEND | S3C2443_PHYPWR_PLL_PWRDN | + S3C2443_PHYPWR_XO_ON | S3C2443_PHYPWR_PLL_REFCLK | + S3C2443_PHYPWR_ANALOG_PD); + cfg |= S3C2443_PHYPWR_COMMON_ON; + writel(cfg, S3C2443_PHYPWR); + + cfg = readl(S3C2443_UCLKCON); + cfg |= (S3C2443_UCLKCON_DETECT_VBUS | S3C2443_UCLKCON_FUNC_CLKEN | + S3C2443_UCLKCON_TCLKEN); + writel(cfg, S3C2443_UCLKCON); +} + +static inline void s3c_hsudc_uninit_phy(void) +{ + u32 cfg; + + cfg = readl(S3C2443_PWRCFG) & ~S3C2443_PWRCFG_USBPHY; + writel(cfg, S3C2443_PWRCFG); + + writel(S3C2443_PHYPWR_FSUSPEND, S3C2443_PHYPWR); + + cfg = readl(S3C2443_UCLKCON) & ~S3C2443_UCLKCON_FUNC_CLKEN; + writel(cfg, S3C2443_UCLKCON); +} + #endif /* __ASM_ARM_REGS_S3C2443_CLOCK */ diff --git a/arch/arm/plat-samsung/devs.c b/arch/arm/plat-samsung/devs.c index 2ed3ef604a25..0607d2984841 100644 --- a/arch/arm/plat-samsung/devs.c +++ b/arch/arm/plat-samsung/devs.c @@ -40,6 +40,10 @@ #include #include +#ifdef CONFIG_PLAT_S3C24XX +#include +#endif /* CONFIG_PLAT_S3C24XX */ + #include #include #include @@ -1037,6 +1041,8 @@ struct platform_device s3c_device_usb_hsudc = { void __init s3c24xx_hsudc_set_platdata(struct s3c24xx_hsudc_platdata *pd) { s3c_set_platdata(pd, sizeof(*pd), &s3c_device_usb_hsudc); + pd->phy_init = s3c_hsudc_init_phy; + pd->phy_uninit = s3c_hsudc_uninit_phy; } #endif /* CONFIG_PLAT_S3C24XX */ diff --git a/drivers/usb/gadget/udc/s3c-hsudc.c b/drivers/usb/gadget/udc/s3c-hsudc.c index aaca1b0a2f59..7bd5182ce3ef 100644 --- a/drivers/usb/gadget/udc/s3c-hsudc.c +++ b/drivers/usb/gadget/udc/s3c-hsudc.c @@ -30,8 +30,6 @@ #include #include -#include - #define S3C_HSUDC_REG(x) (x) /* Non-Indexed Registers */ @@ -186,53 +184,6 @@ static inline void __orr32(void __iomem *ptr, u32 val) writel(readl(ptr) | val, ptr); } -static void s3c_hsudc_init_phy(void) -{ - u32 cfg; - - cfg = readl(S3C2443_PWRCFG) | S3C2443_PWRCFG_USBPHY; - writel(cfg, S3C2443_PWRCFG); - - cfg = readl(S3C2443_URSTCON); - cfg |= (S3C2443_URSTCON_FUNCRST | S3C2443_URSTCON_PHYRST); - writel(cfg, S3C2443_URSTCON); - mdelay(1); - - cfg = readl(S3C2443_URSTCON); - cfg &= ~(S3C2443_URSTCON_FUNCRST | S3C2443_URSTCON_PHYRST); - writel(cfg, S3C2443_URSTCON); - - cfg = readl(S3C2443_PHYCTRL); - cfg &= ~(S3C2443_PHYCTRL_CLKSEL | S3C2443_PHYCTRL_DSPORT); - cfg |= (S3C2443_PHYCTRL_EXTCLK | S3C2443_PHYCTRL_PLLSEL); - writel(cfg, S3C2443_PHYCTRL); - - cfg = readl(S3C2443_PHYPWR); - cfg &= ~(S3C2443_PHYPWR_FSUSPEND | S3C2443_PHYPWR_PLL_PWRDN | - S3C2443_PHYPWR_XO_ON | S3C2443_PHYPWR_PLL_REFCLK | - S3C2443_PHYPWR_ANALOG_PD); - cfg |= S3C2443_PHYPWR_COMMON_ON; - writel(cfg, S3C2443_PHYPWR); - - cfg = readl(S3C2443_UCLKCON); - cfg |= (S3C2443_UCLKCON_DETECT_VBUS | S3C2443_UCLKCON_FUNC_CLKEN | - S3C2443_UCLKCON_TCLKEN); - writel(cfg, S3C2443_UCLKCON); -} - -static void s3c_hsudc_uninit_phy(void) -{ - u32 cfg; - - cfg = readl(S3C2443_PWRCFG) & ~S3C2443_PWRCFG_USBPHY; - writel(cfg, S3C2443_PWRCFG); - - writel(S3C2443_PHYPWR_FSUSPEND, S3C2443_PHYPWR); - - cfg = readl(S3C2443_UCLKCON) & ~S3C2443_UCLKCON_FUNC_CLKEN; - writel(cfg, S3C2443_UCLKCON); -} - /** * s3c_hsudc_complete_request - Complete a transfer request. * @hsep: Endpoint to which the request belongs. @@ -1188,7 +1139,8 @@ static int s3c_hsudc_start(struct usb_gadget *gadget, pm_runtime_get_sync(hsudc->dev); - s3c_hsudc_init_phy(); + if (hsudc->pd->phy_init) + hsudc->pd->phy_init(); if (hsudc->pd->gpio_init) hsudc->pd->gpio_init(); @@ -1210,7 +1162,8 @@ static int s3c_hsudc_stop(struct usb_gadget *gadget) spin_lock_irqsave(&hsudc->lock, flags); hsudc->gadget.speed = USB_SPEED_UNKNOWN; - s3c_hsudc_uninit_phy(); + if (hsudc->pd->phy_uninit) + hsudc->pd->phy_uninit(); pm_runtime_put(hsudc->dev); diff --git a/include/linux/platform_data/s3c-hsudc.h b/include/linux/platform_data/s3c-hsudc.h index 4dc9b8760166..a170939832d5 100644 --- a/include/linux/platform_data/s3c-hsudc.h +++ b/include/linux/platform_data/s3c-hsudc.h @@ -26,6 +26,8 @@ struct s3c24xx_hsudc_platdata { unsigned int epnum; void (*gpio_init)(void); void (*gpio_uninit)(void); + void (*phy_init)(void); + void (*phy_uninit)(void); }; #endif /* __LINUX_USB_S3C_HSUDC_H */