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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/usb/renesas_usbhs/rcar2.c | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/renesas_usbhs/rcar2.c')
-rw-r--r-- | drivers/usb/renesas_usbhs/rcar2.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/usb/renesas_usbhs/rcar2.c b/drivers/usb/renesas_usbhs/rcar2.c new file mode 100644 index 000000000..52756fc2a --- /dev/null +++ b/drivers/usb/renesas_usbhs/rcar2.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-1.0+ +/* + * Renesas USB driver R-Car Gen. 2 initialization and power control + * + * Copyright (C) 2014 Ulrich Hecht + * Copyright (C) 2019 Renesas Electronics Corporation + */ + +#include <linux/phy/phy.h> +#include "common.h" +#include "rcar2.h" + +static int usbhs_rcar2_hardware_init(struct platform_device *pdev) +{ + struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); + + if (IS_ENABLED(CONFIG_GENERIC_PHY)) { + struct phy *phy = phy_get(&pdev->dev, "usb"); + + if (IS_ERR(phy)) + return PTR_ERR(phy); + + priv->phy = phy; + return 0; + } + + return -ENXIO; +} + +static int usbhs_rcar2_hardware_exit(struct platform_device *pdev) +{ + struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); + + if (priv->phy) { + phy_put(&pdev->dev, priv->phy); + priv->phy = NULL; + } + + return 0; +} + +static int usbhs_rcar2_power_ctrl(struct platform_device *pdev, + void __iomem *base, int enable) +{ + struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); + int retval = -ENODEV; + + if (priv->phy) { + if (enable) { + retval = phy_init(priv->phy); + + if (!retval) + retval = phy_power_on(priv->phy); + } else { + phy_power_off(priv->phy); + phy_exit(priv->phy); + retval = 0; + } + } + + return retval; +} + +const struct renesas_usbhs_platform_info usbhs_rcar_gen2_plat_info = { + .platform_callback = { + .hardware_init = usbhs_rcar2_hardware_init, + .hardware_exit = usbhs_rcar2_hardware_exit, + .power_ctrl = usbhs_rcar2_power_ctrl, + .get_id = usbhs_get_id_as_gadget, + }, + .driver_param = { + .has_usb_dmac = 1, + .has_new_pipe_configs = 1, + }, +}; |