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Wed, 26 Oct 2016 08:04:05 -0700 (PDT) Received: from localhost.localdomain ([90.63.244.31]) by smtp.gmail.com with ESMTPSA id p184sm3604259wmg.3.2016.10.26.08.04.04 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 26 Oct 2016 08:04:04 -0700 (PDT) From: Alexandre Bailon To: khilman@baylibre.com, robh+dt@kernel.org, b-liu@ti.com Subject: [PATCH v2 3/4] usb: musb: da8xx: Add DT support for the DA8xx driver Date: Wed, 26 Oct 2016 17:03:56 +0200 Message-Id: <1477494237-22831-4-git-send-email-abailon@baylibre.com> X-Mailer: git-send-email 2.7.3 In-Reply-To: <1477494237-22831-1-git-send-email-abailon@baylibre.com> References: <1477494237-22831-1-git-send-email-abailon@baylibre.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20161026_160428_678544_AD04C584 X-CRM114-Status: GOOD ( 17.90 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Petr Kulhavy , Alexandre Bailon , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Petr Kulhavy This adds DT support for TI DA8xx/OMAP-L1x/AM17xx/AM18xx MUSB driver Signed-off-by: Petr Kulhavy Signed-off-by: Alexandre Bailon Tested-By: David Lechner --- drivers/usb/musb/da8xx.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 210b7e4..bfa571d 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -6,6 +6,9 @@ * Based on the DaVinci "glue layer" code. * Copyright (C) 2005-2006 by Texas Instruments * + * DT support + * Copyright (c) 2016 Petr Kulhavy + * * This file is part of the Inventra Controller Driver for Linux. * * The Inventra Controller Driver for Linux is free software; you @@ -433,6 +436,21 @@ static int da8xx_musb_exit(struct musb *musb) return 0; } +static inline u8 get_vbus_power(struct device *dev) +{ + struct regulator *vbus_supply; + int current_uA; + + vbus_supply = regulator_get_optional(dev, "vbus"); + if (IS_ERR(vbus_supply)) + return 255; + current_uA = regulator_get_current_limit(vbus_supply); + regulator_put(vbus_supply); + if (current_uA <= 0 || current_uA > 510000) + return 255; + return current_uA / 1000 / 2; +} + static const struct musb_platform_ops da8xx_ops = { .quirks = MUSB_DMA_CPPI | MUSB_INDEXED_EP, .init = da8xx_musb_init, @@ -458,6 +476,12 @@ static const struct platform_device_info da8xx_dev_info = { .dma_mask = DMA_BIT_MASK(32), }; +static const struct musb_hdrc_config da8xx_config = { + .ram_bits = 10, + .num_eps = 5, + .multipoint = 1, +}; + static int da8xx_probe(struct platform_device *pdev) { struct resource musb_resources[2]; @@ -465,7 +489,9 @@ static int da8xx_probe(struct platform_device *pdev) struct da8xx_glue *glue; struct platform_device_info pinfo; struct clk *clk; + struct device_node *np = pdev->dev.of_node; int ret; + struct resource *res; glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL); if (!glue) @@ -486,6 +512,18 @@ static int da8xx_probe(struct platform_device *pdev) glue->dev = &pdev->dev; glue->clk = clk; + if (IS_ENABLED(CONFIG_OF) && np) { + pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) { + /* FIXME */ + return -ENOMEM; + } + + pdata->config = &da8xx_config; + pdata->mode = musb_get_mode(&pdev->dev); + pdata->power = get_vbus_power(&pdev->dev); + } + pdata->platform_ops = &da8xx_ops; glue->usb_phy = usb_phy_generic_register(); @@ -536,11 +574,20 @@ static int da8xx_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id da8xx_id_table[] = { + { + .compatible = "ti,da830-musb", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, da8xx_id_table); + static struct platform_driver da8xx_driver = { .probe = da8xx_probe, .remove = da8xx_remove, .driver = { .name = "musb-da8xx", + .of_match_table = of_match_ptr(da8xx_id_table), }, };