Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 35bd67b2 authored by Petr Kulhavy's avatar Petr Kulhavy Committed by Greg Kroah-Hartman
Browse files

usb: musb: da8xx: Add DT support for the DA8xx driver 



This adds DT support for TI DA8xx/OMAP-L1x/AM17xx/AM18xx MUSB driver

Signed-off-by: default avatarPetr Kulhavy <petr@barix.com>
Signed-off-by: default avatarAlexandre Bailon <abailon@baylibre.com>
Tested-by: default avatarDavid Lechner <david@lechnology.com>
Signed-off-by: default avatarBin Liu <b-liu@ti.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 830fc64c

drivers/usb/musb/da8xx.c

+46 −0
Original line number Diff line number Diff line
@@ -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 <petr@barix.com>

 *

 * 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];
@@ -465,6 +489,7 @@ 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;



	glue = devm_kzalloc(&pdev->dev, sizeof(*glue), GFP_KERNEL);
@@ -487,6 +512,16 @@ 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)

			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();
@@ -537,11 +572,22 @@ static int da8xx_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_OF

static const struct of_device_id da8xx_id_table[] = {

	{

		.compatible = "ti,da830-musb",

	},

	{},

};

MODULE_DEVICE_TABLE(of, da8xx_id_table);

#endif



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),

	},

};