Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Renesas USB driver RZ/A2 initialization and power control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (C) 2019 Chris Brandt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright (C) 2019 Renesas Electronics Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/phy/phy.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "common.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "rza.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) static int usbhs_rza2_hardware_init(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	struct phy *phy = phy_get(&pdev->dev, "usb");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	if (IS_ERR(phy))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		return PTR_ERR(phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	priv->phy = phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static int usbhs_rza2_hardware_exit(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	phy_put(&pdev->dev, priv->phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	priv->phy = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static int usbhs_rza2_power_ctrl(struct platform_device *pdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 				void __iomem *base, int enable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	int retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	if (!priv->phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	if (enable) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		retval = phy_init(priv->phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 		usbhs_bset(priv, SUSPMODE, SUSPM, SUSPM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		udelay(100);	/* Wait for PLL to become stable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		if (!retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 			retval = phy_power_on(priv->phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 		usbhs_bset(priv, SUSPMODE, SUSPM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 		phy_power_off(priv->phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		phy_exit(priv->phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) const struct renesas_usbhs_platform_info usbhs_rza2_plat_info = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	.platform_callback = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 		.hardware_init = usbhs_rza2_hardware_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 		.hardware_exit = usbhs_rza2_hardware_exit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 		.power_ctrl = usbhs_rza2_power_ctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 		.get_id = usbhs_get_id_as_gadget,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 	.driver_param = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 		.has_cnen = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 		.cfifo_byte_addr = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 		.has_new_pipe_configs = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) };