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)  * drivers/usb/host/ehci-orion.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Tzachi Perelstein <tzachi@marvell.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/mbus.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/platform_data/usb-ehci-orion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/phy/phy.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/of_irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/usb/hcd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include "ehci.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #define rdl(off)	readl_relaxed(hcd->regs + (off))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #define wrl(off, val)	writel_relaxed((val), hcd->regs + (off))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #define USB_CMD			0x140
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #define   USB_CMD_RUN		BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #define   USB_CMD_RESET		BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #define USB_MODE		0x1a8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #define   USB_MODE_MASK		GENMASK(1, 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #define   USB_MODE_DEVICE	0x2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #define   USB_MODE_HOST		0x3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define   USB_MODE_SDIS		BIT(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) #define USB_CAUSE		0x310
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) #define USB_MASK		0x314
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) #define USB_WINDOW_CTRL(i)	(0x320 + ((i) << 4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define USB_WINDOW_BASE(i)	(0x324 + ((i) << 4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define USB_IPG			0x360
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define USB_PHY_PWR_CTRL	0x400
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) #define USB_PHY_TX_CTRL		0x420
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #define USB_PHY_RX_CTRL		0x430
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) #define USB_PHY_IVREF_CTRL	0x440
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) #define USB_PHY_TST_GRP_CTRL	0x450
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define USB_SBUSCFG		0x90
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) /* BAWR = BARD = 3 : Align read/write bursts packets larger than 128 bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) #define USB_SBUSCFG_BAWR_ALIGN_128B	(0x3 << 6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) #define USB_SBUSCFG_BARD_ALIGN_128B	(0x3 << 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) /* AHBBRST = 3	   : Align AHB Burst to INCR16 (64 bytes) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) #define USB_SBUSCFG_AHBBRST_INCR16	(0x3 << 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) #define USB_SBUSCFG_DEF_VAL (USB_SBUSCFG_BAWR_ALIGN_128B	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 			     | USB_SBUSCFG_BARD_ALIGN_128B	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 			     | USB_SBUSCFG_AHBBRST_INCR16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) #define DRIVER_DESC "EHCI orion driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) #define hcd_to_orion_priv(h) ((struct orion_ehci_hcd *)hcd_to_ehci(h)->priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) struct orion_ehci_hcd {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct clk *clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	struct phy *phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) static const char hcd_name[] = "ehci-orion";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) static struct hc_driver __read_mostly ehci_orion_hc_driver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73)  * Implement Orion USB controller specification guidelines
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) static void orion_usb_phy_v1_setup(struct usb_hcd *hcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	/* The below GLs are according to the Orion Errata document */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	 * Clear interrupt cause and mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	wrl(USB_CAUSE, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	wrl(USB_MASK, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	 * Reset controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 	while (rdl(USB_CMD) & USB_CMD_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	 * GL# USB-10: Set IPG for non start of frame packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	 * Bits[14:8]=0xc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	wrl(USB_IPG, (rdl(USB_IPG) & ~0x7f00) | 0xc00);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	 * GL# USB-9: USB 2.0 Power Control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	 * BG_VSEL[7:6]=0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	wrl(USB_PHY_PWR_CTRL, (rdl(USB_PHY_PWR_CTRL) & ~0xc0)| 0x40);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	 * GL# USB-1: USB PHY Tx Control - force calibration to '8'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	 * TXDATA_BLOCK_EN[21]=0x1, EXT_RCAL_EN[13]=0x1, IMP_CAL[6:3]=0x8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	wrl(USB_PHY_TX_CTRL, (rdl(USB_PHY_TX_CTRL) & ~0x78) | 0x202040);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	 * GL# USB-3 GL# USB-9: USB PHY Rx Control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	 * RXDATA_BLOCK_LENGHT[31:30]=0x3, EDGE_DET_SEL[27:26]=0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	 * CDR_FASTLOCK_EN[21]=0, DISCON_THRESHOLD[9:8]=0, SQ_THRESH[7:4]=0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	wrl(USB_PHY_RX_CTRL, (rdl(USB_PHY_RX_CTRL) & ~0xc2003f0) | 0xc0000010);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	 * GL# USB-3 GL# USB-9: USB PHY IVREF Control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	 * PLLVDD12[1:0]=0x2, RXVDD[5:4]=0x3, Reserved[19]=0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	wrl(USB_PHY_IVREF_CTRL, (rdl(USB_PHY_IVREF_CTRL) & ~0x80003 ) | 0x32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	 * GL# USB-3 GL# USB-9: USB PHY Test Group Control
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	 * REG_FIFO_SQ_RST[15]=0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	wrl(USB_PHY_TST_GRP_CTRL, rdl(USB_PHY_TST_GRP_CTRL) & ~0x8000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	 * Stop and reset controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	wrl(USB_CMD, rdl(USB_CMD) & ~USB_CMD_RUN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	wrl(USB_CMD, rdl(USB_CMD) | USB_CMD_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	while (rdl(USB_CMD) & USB_CMD_RESET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	 * GL# USB-5 Streaming disable REG_USB_MODE[4]=1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	 * TBD: This need to be done after each reset!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	 * GL# USB-4 Setup USB Host mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	wrl(USB_MODE, USB_MODE_SDIS | USB_MODE_HOST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) ehci_orion_conf_mbus_windows(struct usb_hcd *hcd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 			     const struct mbus_dram_target_info *dram)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	for (i = 0; i < 4; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 		wrl(USB_WINDOW_CTRL(i), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 		wrl(USB_WINDOW_BASE(i), 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	for (i = 0; i < dram->num_cs; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		const struct mbus_dram_window *cs = dram->cs + i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		wrl(USB_WINDOW_CTRL(i), ((cs->size - 1) & 0xffff0000) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 					(cs->mbus_attr << 8) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 					(dram->mbus_dram_target_id << 4) | 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		wrl(USB_WINDOW_BASE(i), cs->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static int ehci_orion_drv_reset(struct usb_hcd *hcd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	struct device *dev = hcd->self.controller;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	ret = ehci_setup(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	 * For SoC without hlock, need to program sbuscfg value to guarantee
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	 * AHB master's burst would not overrun or underrun FIFO.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	 * sbuscfg reg has to be set after usb controller reset, otherwise
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	 * the value would be override to 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	if (of_device_is_compatible(dev->of_node, "marvell,armada-3700-ehci"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 		wrl(USB_SBUSCFG, USB_SBUSCFG_DEF_VAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) static int __maybe_unused ehci_orion_drv_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	struct usb_hcd *hcd = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	return ehci_suspend(hcd, device_may_wakeup(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) static int __maybe_unused ehci_orion_drv_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	struct usb_hcd *hcd = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	return ehci_resume(hcd, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) static SIMPLE_DEV_PM_OPS(ehci_orion_pm_ops, ehci_orion_drv_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 			 ehci_orion_drv_resume);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) static const struct ehci_driver_overrides orion_overrides __initconst = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	.extra_priv_size =	sizeof(struct orion_ehci_hcd),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	.reset = ehci_orion_drv_reset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static int ehci_orion_drv_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	struct orion_ehci_data *pd = dev_get_platdata(&pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	const struct mbus_dram_target_info *dram;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	struct usb_hcd *hcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	struct ehci_hcd *ehci;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	void __iomem *regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	int irq, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	enum orion_ehci_phy_ver phy_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	struct orion_ehci_hcd *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	if (usb_disabled())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	pr_debug("Initializing Orion-SoC USB Host Controller\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	irq = platform_get_irq(pdev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	if (irq <= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	 * Right now device-tree probed devices don't get dma_mask
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	 * set. Since shared usb code relies on it, set it here for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 	 * now. Once we have dma capability bindings this can go away.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	regs = devm_ioremap_resource(&pdev->dev, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	if (IS_ERR(regs)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 		err = PTR_ERR(regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	hcd = usb_create_hcd(&ehci_orion_hc_driver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			&pdev->dev, dev_name(&pdev->dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	if (!hcd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 		goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	hcd->rsrc_start = res->start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	hcd->rsrc_len = resource_size(res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	hcd->regs = regs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	ehci = hcd_to_ehci(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	ehci->caps = hcd->regs + 0x100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	hcd->has_tt = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	priv = hcd_to_orion_priv(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	 * Not all platforms can gate the clock, so it is not an error if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	 * the clock does not exists.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	priv->clk = devm_clk_get(&pdev->dev, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	if (!IS_ERR(priv->clk)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 		err = clk_prepare_enable(priv->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 			goto err_put_hcd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	if (IS_ERR(priv->phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 		err = PTR_ERR(priv->phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 		if (err != -ENOSYS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 			goto err_dis_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	 * (Re-)program MBUS remapping windows if we are asked to.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	dram = mv_mbus_dram_info();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	if (dram)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 		ehci_orion_conf_mbus_windows(hcd, dram);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	 * setup Orion USB controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	if (pdev->dev.of_node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 		phy_version = EHCI_PHY_NA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 		phy_version = pd->phy_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	switch (phy_version) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	case EHCI_PHY_NA:	/* dont change USB phy settings */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	case EHCI_PHY_ORION:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 		orion_usb_phy_v1_setup(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	case EHCI_PHY_DD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	case EHCI_PHY_KW:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 		dev_warn(&pdev->dev, "USB phy version isn't supported.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	err = usb_add_hcd(hcd, irq, IRQF_SHARED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 		goto err_dis_clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	device_wakeup_enable(hcd->self.controller);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) err_dis_clk:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	if (!IS_ERR(priv->clk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 		clk_disable_unprepare(priv->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) err_put_hcd:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	usb_put_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 	dev_err(&pdev->dev, "init %s fail, %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		dev_name(&pdev->dev), err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) static int ehci_orion_drv_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	struct usb_hcd *hcd = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	struct orion_ehci_hcd *priv = hcd_to_orion_priv(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	usb_remove_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	if (!IS_ERR(priv->clk))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 		clk_disable_unprepare(priv->clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	usb_put_hcd(hcd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static const struct of_device_id ehci_orion_dt_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	{ .compatible = "marvell,orion-ehci", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	{ .compatible = "marvell,armada-3700-ehci", },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 	{},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) static struct platform_driver ehci_orion_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	.probe		= ehci_orion_drv_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	.remove		= ehci_orion_drv_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	.shutdown	= usb_hcd_platform_shutdown,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 		.name	= "orion-ehci",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 		.of_match_table = ehci_orion_dt_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 		.pm = &ehci_orion_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) static int __init ehci_orion_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 	if (usb_disabled())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	ehci_init_driver(&ehci_orion_hc_driver, &orion_overrides);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	return platform_driver_register(&ehci_orion_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) module_init(ehci_orion_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) static void __exit ehci_orion_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	platform_driver_unregister(&ehci_orion_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) module_exit(ehci_orion_cleanup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) MODULE_ALIAS("platform:orion-ehci");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) MODULE_AUTHOR("Tzachi Perelstein");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) MODULE_LICENSE("GPL v2");