diff options
| author | Petr Kulhavy <petr@barix.com> | 2016-11-21 17:59:29 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-21 19:35:37 +0300 |
| commit | 35bd67b2e566e400d7c6984cd0b1d10cef58f799 (patch) | |
| tree | abbeacccb38c54ee49773569cf881dfbc02d7328 /drivers | |
| parent | 830fc64ca721101d5f360c1b7d09b8037b2b5b0b (diff) | |
| download | linux-35bd67b2e566e400d7c6984cd0b1d10cef58f799.tar.xz | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/musb/da8xx.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index 2440f88e07a3..f205a0381fcc 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 <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), }, }; |