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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: Petr Kulhavy <petr@barix.com>
Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
Tested-by: David Lechner <david@lechnology.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Petr Kulhavy 2016-11-21 08:59:29 -06:00 committed by Greg Kroah-Hartman
parent 830fc64ca7
commit 35bd67b2e5
1 changed files with 46 additions and 0 deletions
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46
drivers/usb/musb/da8xx.c
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@ -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),
},
};