183d290c5STom Rini // SPDX-License-Identifier: GPL-2.0
285d5e707SKishon Vijay Abraham I /**
385d5e707SKishon Vijay Abraham I * dwc3-omap.c - OMAP Specific Glue layer
485d5e707SKishon Vijay Abraham I *
530c31d58SKishon Vijay Abraham I * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com
685d5e707SKishon Vijay Abraham I *
785d5e707SKishon Vijay Abraham I * Authors: Felipe Balbi <balbi@ti.com>,
885d5e707SKishon Vijay Abraham I * Sebastian Andrzej Siewior <bigeasy@linutronix.de>
985d5e707SKishon Vijay Abraham I *
1030c31d58SKishon Vijay Abraham I * Taken from Linux Kernel v3.19-rc1 (drivers/usb/dwc3/dwc3-omap.c) and ported
1130c31d58SKishon Vijay Abraham I * to uboot.
1285d5e707SKishon Vijay Abraham I *
1330c31d58SKishon Vijay Abraham I * commit 7ee2566ff5 : usb: dwc3: dwc3-omap: get rid of ->prepare()/->complete()
1485d5e707SKishon Vijay Abraham I */
1585d5e707SKishon Vijay Abraham I
163f52e1b9SKishon Vijay Abraham I #include <common.h>
173f52e1b9SKishon Vijay Abraham I #include <malloc.h>
183f52e1b9SKishon Vijay Abraham I #include <asm/io.h>
19*0ad3f771SMugunthan V N #include <dm.h>
20c241d7eeSKishon Vijay Abraham I #include <dwc3-omap-uboot.h>
213f52e1b9SKishon Vijay Abraham I #include <linux/usb/dwc3-omap.h>
2285d5e707SKishon Vijay Abraham I #include <linux/ioport.h>
2385d5e707SKishon Vijay Abraham I
2485d5e707SKishon Vijay Abraham I #include <linux/usb/otg.h>
253f52e1b9SKishon Vijay Abraham I #include <linux/compat.h>
263f52e1b9SKishon Vijay Abraham I
273f52e1b9SKishon Vijay Abraham I #include "linux-compat.h"
2885d5e707SKishon Vijay Abraham I
2985d5e707SKishon Vijay Abraham I /*
3085d5e707SKishon Vijay Abraham I * All these registers belong to OMAP's Wrapper around the
3185d5e707SKishon Vijay Abraham I * DesignWare USB3 Core.
3285d5e707SKishon Vijay Abraham I */
3385d5e707SKishon Vijay Abraham I
3485d5e707SKishon Vijay Abraham I #define USBOTGSS_REVISION 0x0000
3585d5e707SKishon Vijay Abraham I #define USBOTGSS_SYSCONFIG 0x0010
3685d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQ_EOI 0x0020
3785d5e707SKishon Vijay Abraham I #define USBOTGSS_EOI_OFFSET 0x0008
3885d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_RAW_0 0x0024
3985d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_0 0x0028
4085d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQENABLE_SET_0 0x002c
4185d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQENABLE_CLR_0 0x0030
4285d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQ0_OFFSET 0x0004
4385d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_RAW_1 0x0030
4485d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_1 0x0034
4585d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQENABLE_SET_1 0x0038
4685d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQENABLE_CLR_1 0x003c
4785d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_RAW_2 0x0040
4885d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_2 0x0044
4985d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQENABLE_SET_2 0x0048
5085d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQENABLE_CLR_2 0x004c
5185d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_RAW_3 0x0050
5285d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_3 0x0054
5385d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQENABLE_SET_3 0x0058
5485d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQENABLE_CLR_3 0x005c
5585d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_EOI_MISC 0x0030
5685d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_RAW_MISC 0x0034
5785d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQSTATUS_MISC 0x0038
5885d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQENABLE_SET_MISC 0x003c
5985d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQENABLE_CLR_MISC 0x0040
6085d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_OFFSET 0x03fc
6185d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_CTRL 0x0080
6285d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_STATUS 0x0084
6385d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_OFFSET 0x0480
6485d5e707SKishon Vijay Abraham I #define USBOTGSS_TXFIFO_DEPTH 0x0508
6585d5e707SKishon Vijay Abraham I #define USBOTGSS_RXFIFO_DEPTH 0x050c
6685d5e707SKishon Vijay Abraham I #define USBOTGSS_MMRAM_OFFSET 0x0100
6785d5e707SKishon Vijay Abraham I #define USBOTGSS_FLADJ 0x0104
6885d5e707SKishon Vijay Abraham I #define USBOTGSS_DEBUG_CFG 0x0108
6985d5e707SKishon Vijay Abraham I #define USBOTGSS_DEBUG_DATA 0x010c
7085d5e707SKishon Vijay Abraham I #define USBOTGSS_DEV_EBC_EN 0x0110
7185d5e707SKishon Vijay Abraham I #define USBOTGSS_DEBUG_OFFSET 0x0600
7285d5e707SKishon Vijay Abraham I
7385d5e707SKishon Vijay Abraham I /* SYSCONFIG REGISTER */
7485d5e707SKishon Vijay Abraham I #define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16)
7585d5e707SKishon Vijay Abraham I
7685d5e707SKishon Vijay Abraham I /* IRQ_EOI REGISTER */
7785d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQ_EOI_LINE_NUMBER (1 << 0)
7885d5e707SKishon Vijay Abraham I
7985d5e707SKishon Vijay Abraham I /* IRQS0 BITS */
8085d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQO_COREIRQ_ST (1 << 0)
8185d5e707SKishon Vijay Abraham I
8285d5e707SKishon Vijay Abraham I /* IRQMISC BITS */
8385d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_DMADISABLECLR (1 << 17)
8485d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_OEVT (1 << 16)
8585d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_DRVVBUS_RISE (1 << 13)
8685d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_CHRGVBUS_RISE (1 << 12)
8785d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE (1 << 11)
8885d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_IDPULLUP_RISE (1 << 8)
8985d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_DRVVBUS_FALL (1 << 5)
9085d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_CHRGVBUS_FALL (1 << 4)
9185d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL (1 << 3)
9285d5e707SKishon Vijay Abraham I #define USBOTGSS_IRQMISC_IDPULLUP_FALL (1 << 0)
9385d5e707SKishon Vijay Abraham I
948af1be76SKishon Vijay Abraham I #define USBOTGSS_INTERRUPTS (USBOTGSS_IRQMISC_OEVT | \
958af1be76SKishon Vijay Abraham I USBOTGSS_IRQMISC_DRVVBUS_RISE | \
968af1be76SKishon Vijay Abraham I USBOTGSS_IRQMISC_CHRGVBUS_RISE | \
978af1be76SKishon Vijay Abraham I USBOTGSS_IRQMISC_DISCHRGVBUS_RISE | \
988af1be76SKishon Vijay Abraham I USBOTGSS_IRQMISC_IDPULLUP_RISE | \
998af1be76SKishon Vijay Abraham I USBOTGSS_IRQMISC_DRVVBUS_FALL | \
1008af1be76SKishon Vijay Abraham I USBOTGSS_IRQMISC_CHRGVBUS_FALL | \
1018af1be76SKishon Vijay Abraham I USBOTGSS_IRQMISC_DISCHRGVBUS_FALL | \
1028af1be76SKishon Vijay Abraham I USBOTGSS_IRQMISC_IDPULLUP_FALL)
1038af1be76SKishon Vijay Abraham I
10485d5e707SKishon Vijay Abraham I /* UTMI_OTG_CTRL REGISTER */
10585d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_CTRL_DRVVBUS (1 << 5)
10685d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_CTRL_CHRGVBUS (1 << 4)
10785d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_CTRL_DISCHRGVBUS (1 << 3)
10885d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_CTRL_IDPULLUP (1 << 0)
10985d5e707SKishon Vijay Abraham I
11085d5e707SKishon Vijay Abraham I /* UTMI_OTG_STATUS REGISTER */
11185d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_STATUS_SW_MODE (1 << 31)
11285d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT (1 << 9)
11385d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_STATUS_TXBITSTUFFENABLE (1 << 8)
11485d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_STATUS_IDDIG (1 << 4)
11585d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_STATUS_SESSEND (1 << 3)
11685d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_STATUS_SESSVALID (1 << 2)
11785d5e707SKishon Vijay Abraham I #define USBOTGSS_UTMI_OTG_STATUS_VBUSVALID (1 << 1)
11885d5e707SKishon Vijay Abraham I
11985d5e707SKishon Vijay Abraham I struct dwc3_omap {
12085d5e707SKishon Vijay Abraham I struct device *dev;
12185d5e707SKishon Vijay Abraham I
12285d5e707SKishon Vijay Abraham I void __iomem *base;
12385d5e707SKishon Vijay Abraham I
12485d5e707SKishon Vijay Abraham I u32 utmi_otg_status;
12585d5e707SKishon Vijay Abraham I u32 utmi_otg_offset;
12685d5e707SKishon Vijay Abraham I u32 irqmisc_offset;
12785d5e707SKishon Vijay Abraham I u32 irq_eoi_offset;
12885d5e707SKishon Vijay Abraham I u32 debug_offset;
12985d5e707SKishon Vijay Abraham I u32 irq0_offset;
13085d5e707SKishon Vijay Abraham I
13185d5e707SKishon Vijay Abraham I u32 dma_status:1;
13257207657SKishon Vijay Abraham I struct list_head list;
13357207657SKishon Vijay Abraham I u32 index;
13485d5e707SKishon Vijay Abraham I };
13585d5e707SKishon Vijay Abraham I
13657207657SKishon Vijay Abraham I static LIST_HEAD(dwc3_omap_list);
137c241d7eeSKishon Vijay Abraham I
dwc3_omap_readl(void __iomem * base,u32 offset)13885d5e707SKishon Vijay Abraham I static inline u32 dwc3_omap_readl(void __iomem *base, u32 offset)
13985d5e707SKishon Vijay Abraham I {
14085d5e707SKishon Vijay Abraham I return readl(base + offset);
14185d5e707SKishon Vijay Abraham I }
14285d5e707SKishon Vijay Abraham I
dwc3_omap_writel(void __iomem * base,u32 offset,u32 value)14385d5e707SKishon Vijay Abraham I static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value)
14485d5e707SKishon Vijay Abraham I {
14585d5e707SKishon Vijay Abraham I writel(value, base + offset);
14685d5e707SKishon Vijay Abraham I }
14785d5e707SKishon Vijay Abraham I
dwc3_omap_read_utmi_status(struct dwc3_omap * omap)14885d5e707SKishon Vijay Abraham I static u32 dwc3_omap_read_utmi_status(struct dwc3_omap *omap)
14985d5e707SKishon Vijay Abraham I {
15085d5e707SKishon Vijay Abraham I return dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS +
15185d5e707SKishon Vijay Abraham I omap->utmi_otg_offset);
15285d5e707SKishon Vijay Abraham I }
15385d5e707SKishon Vijay Abraham I
dwc3_omap_write_utmi_status(struct dwc3_omap * omap,u32 value)15485d5e707SKishon Vijay Abraham I static void dwc3_omap_write_utmi_status(struct dwc3_omap *omap, u32 value)
15585d5e707SKishon Vijay Abraham I {
15685d5e707SKishon Vijay Abraham I dwc3_omap_writel(omap->base, USBOTGSS_UTMI_OTG_STATUS +
15785d5e707SKishon Vijay Abraham I omap->utmi_otg_offset, value);
15885d5e707SKishon Vijay Abraham I
15985d5e707SKishon Vijay Abraham I }
16085d5e707SKishon Vijay Abraham I
dwc3_omap_read_irq0_status(struct dwc3_omap * omap)16185d5e707SKishon Vijay Abraham I static u32 dwc3_omap_read_irq0_status(struct dwc3_omap *omap)
16285d5e707SKishon Vijay Abraham I {
16385d5e707SKishon Vijay Abraham I return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_0 -
16485d5e707SKishon Vijay Abraham I omap->irq0_offset);
16585d5e707SKishon Vijay Abraham I }
16685d5e707SKishon Vijay Abraham I
dwc3_omap_write_irq0_status(struct dwc3_omap * omap,u32 value)16785d5e707SKishon Vijay Abraham I static void dwc3_omap_write_irq0_status(struct dwc3_omap *omap, u32 value)
16885d5e707SKishon Vijay Abraham I {
16985d5e707SKishon Vijay Abraham I dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_0 -
17085d5e707SKishon Vijay Abraham I omap->irq0_offset, value);
17185d5e707SKishon Vijay Abraham I
17285d5e707SKishon Vijay Abraham I }
17385d5e707SKishon Vijay Abraham I
dwc3_omap_read_irqmisc_status(struct dwc3_omap * omap)17485d5e707SKishon Vijay Abraham I static u32 dwc3_omap_read_irqmisc_status(struct dwc3_omap *omap)
17585d5e707SKishon Vijay Abraham I {
17685d5e707SKishon Vijay Abraham I return dwc3_omap_readl(omap->base, USBOTGSS_IRQSTATUS_MISC +
17785d5e707SKishon Vijay Abraham I omap->irqmisc_offset);
17885d5e707SKishon Vijay Abraham I }
17985d5e707SKishon Vijay Abraham I
dwc3_omap_write_irqmisc_status(struct dwc3_omap * omap,u32 value)18085d5e707SKishon Vijay Abraham I static void dwc3_omap_write_irqmisc_status(struct dwc3_omap *omap, u32 value)
18185d5e707SKishon Vijay Abraham I {
18285d5e707SKishon Vijay Abraham I dwc3_omap_writel(omap->base, USBOTGSS_IRQSTATUS_MISC +
18385d5e707SKishon Vijay Abraham I omap->irqmisc_offset, value);
18485d5e707SKishon Vijay Abraham I
18585d5e707SKishon Vijay Abraham I }
18685d5e707SKishon Vijay Abraham I
dwc3_omap_write_irqmisc_set(struct dwc3_omap * omap,u32 value)18785d5e707SKishon Vijay Abraham I static void dwc3_omap_write_irqmisc_set(struct dwc3_omap *omap, u32 value)
18885d5e707SKishon Vijay Abraham I {
18985d5e707SKishon Vijay Abraham I dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_MISC +
19085d5e707SKishon Vijay Abraham I omap->irqmisc_offset, value);
19185d5e707SKishon Vijay Abraham I
19285d5e707SKishon Vijay Abraham I }
19385d5e707SKishon Vijay Abraham I
dwc3_omap_write_irq0_set(struct dwc3_omap * omap,u32 value)19485d5e707SKishon Vijay Abraham I static void dwc3_omap_write_irq0_set(struct dwc3_omap *omap, u32 value)
19585d5e707SKishon Vijay Abraham I {
19685d5e707SKishon Vijay Abraham I dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_SET_0 -
19785d5e707SKishon Vijay Abraham I omap->irq0_offset, value);
19885d5e707SKishon Vijay Abraham I }
19985d5e707SKishon Vijay Abraham I
dwc3_omap_write_irqmisc_clr(struct dwc3_omap * omap,u32 value)2008af1be76SKishon Vijay Abraham I static void dwc3_omap_write_irqmisc_clr(struct dwc3_omap *omap, u32 value)
2018af1be76SKishon Vijay Abraham I {
2028af1be76SKishon Vijay Abraham I dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_MISC +
2038af1be76SKishon Vijay Abraham I omap->irqmisc_offset, value);
2048af1be76SKishon Vijay Abraham I }
2058af1be76SKishon Vijay Abraham I
dwc3_omap_write_irq0_clr(struct dwc3_omap * omap,u32 value)2068af1be76SKishon Vijay Abraham I static void dwc3_omap_write_irq0_clr(struct dwc3_omap *omap, u32 value)
2078af1be76SKishon Vijay Abraham I {
2088af1be76SKishon Vijay Abraham I dwc3_omap_writel(omap->base, USBOTGSS_IRQENABLE_CLR_0 -
2098af1be76SKishon Vijay Abraham I omap->irq0_offset, value);
2108af1be76SKishon Vijay Abraham I }
2118af1be76SKishon Vijay Abraham I
dwc3_omap_set_mailbox(struct dwc3_omap * omap,enum omap_dwc3_vbus_id_status status)21285d5e707SKishon Vijay Abraham I static void dwc3_omap_set_mailbox(struct dwc3_omap *omap,
21385d5e707SKishon Vijay Abraham I enum omap_dwc3_vbus_id_status status)
21485d5e707SKishon Vijay Abraham I {
21585d5e707SKishon Vijay Abraham I u32 val;
21685d5e707SKishon Vijay Abraham I
21785d5e707SKishon Vijay Abraham I switch (status) {
21885d5e707SKishon Vijay Abraham I case OMAP_DWC3_ID_GROUND:
21985d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "ID GND\n");
22085d5e707SKishon Vijay Abraham I
22185d5e707SKishon Vijay Abraham I val = dwc3_omap_read_utmi_status(omap);
22285d5e707SKishon Vijay Abraham I val &= ~(USBOTGSS_UTMI_OTG_STATUS_IDDIG
22385d5e707SKishon Vijay Abraham I | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID
22485d5e707SKishon Vijay Abraham I | USBOTGSS_UTMI_OTG_STATUS_SESSEND);
22585d5e707SKishon Vijay Abraham I val |= USBOTGSS_UTMI_OTG_STATUS_SESSVALID
22685d5e707SKishon Vijay Abraham I | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT;
22785d5e707SKishon Vijay Abraham I dwc3_omap_write_utmi_status(omap, val);
22885d5e707SKishon Vijay Abraham I break;
22985d5e707SKishon Vijay Abraham I
23085d5e707SKishon Vijay Abraham I case OMAP_DWC3_VBUS_VALID:
23185d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "VBUS Connect\n");
23285d5e707SKishon Vijay Abraham I
23385d5e707SKishon Vijay Abraham I val = dwc3_omap_read_utmi_status(omap);
23485d5e707SKishon Vijay Abraham I val &= ~USBOTGSS_UTMI_OTG_STATUS_SESSEND;
23585d5e707SKishon Vijay Abraham I val |= USBOTGSS_UTMI_OTG_STATUS_IDDIG
23685d5e707SKishon Vijay Abraham I | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID
23785d5e707SKishon Vijay Abraham I | USBOTGSS_UTMI_OTG_STATUS_SESSVALID
23885d5e707SKishon Vijay Abraham I | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT;
23985d5e707SKishon Vijay Abraham I dwc3_omap_write_utmi_status(omap, val);
24085d5e707SKishon Vijay Abraham I break;
24185d5e707SKishon Vijay Abraham I
24285d5e707SKishon Vijay Abraham I case OMAP_DWC3_ID_FLOAT:
24385d5e707SKishon Vijay Abraham I case OMAP_DWC3_VBUS_OFF:
24485d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "VBUS Disconnect\n");
24585d5e707SKishon Vijay Abraham I
24685d5e707SKishon Vijay Abraham I val = dwc3_omap_read_utmi_status(omap);
24785d5e707SKishon Vijay Abraham I val &= ~(USBOTGSS_UTMI_OTG_STATUS_SESSVALID
24885d5e707SKishon Vijay Abraham I | USBOTGSS_UTMI_OTG_STATUS_VBUSVALID
24985d5e707SKishon Vijay Abraham I | USBOTGSS_UTMI_OTG_STATUS_POWERPRESENT);
25085d5e707SKishon Vijay Abraham I val |= USBOTGSS_UTMI_OTG_STATUS_SESSEND
25185d5e707SKishon Vijay Abraham I | USBOTGSS_UTMI_OTG_STATUS_IDDIG;
25285d5e707SKishon Vijay Abraham I dwc3_omap_write_utmi_status(omap, val);
25385d5e707SKishon Vijay Abraham I break;
25485d5e707SKishon Vijay Abraham I
25585d5e707SKishon Vijay Abraham I default:
25685d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "invalid state\n");
25785d5e707SKishon Vijay Abraham I }
25885d5e707SKishon Vijay Abraham I }
25985d5e707SKishon Vijay Abraham I
dwc3_omap_interrupt(int irq,void * _omap)26085d5e707SKishon Vijay Abraham I static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap)
26185d5e707SKishon Vijay Abraham I {
26285d5e707SKishon Vijay Abraham I struct dwc3_omap *omap = _omap;
26385d5e707SKishon Vijay Abraham I u32 reg;
26485d5e707SKishon Vijay Abraham I
26585d5e707SKishon Vijay Abraham I reg = dwc3_omap_read_irqmisc_status(omap);
26685d5e707SKishon Vijay Abraham I
26785d5e707SKishon Vijay Abraham I if (reg & USBOTGSS_IRQMISC_DMADISABLECLR) {
26885d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "DMA Disable was Cleared\n");
26985d5e707SKishon Vijay Abraham I omap->dma_status = false;
27085d5e707SKishon Vijay Abraham I }
27185d5e707SKishon Vijay Abraham I
27285d5e707SKishon Vijay Abraham I if (reg & USBOTGSS_IRQMISC_OEVT)
27385d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "OTG Event\n");
27485d5e707SKishon Vijay Abraham I
27585d5e707SKishon Vijay Abraham I if (reg & USBOTGSS_IRQMISC_DRVVBUS_RISE)
27685d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "DRVVBUS Rise\n");
27785d5e707SKishon Vijay Abraham I
27885d5e707SKishon Vijay Abraham I if (reg & USBOTGSS_IRQMISC_CHRGVBUS_RISE)
27985d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "CHRGVBUS Rise\n");
28085d5e707SKishon Vijay Abraham I
28185d5e707SKishon Vijay Abraham I if (reg & USBOTGSS_IRQMISC_DISCHRGVBUS_RISE)
28285d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "DISCHRGVBUS Rise\n");
28385d5e707SKishon Vijay Abraham I
28485d5e707SKishon Vijay Abraham I if (reg & USBOTGSS_IRQMISC_IDPULLUP_RISE)
28585d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "IDPULLUP Rise\n");
28685d5e707SKishon Vijay Abraham I
28785d5e707SKishon Vijay Abraham I if (reg & USBOTGSS_IRQMISC_DRVVBUS_FALL)
28885d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "DRVVBUS Fall\n");
28985d5e707SKishon Vijay Abraham I
29085d5e707SKishon Vijay Abraham I if (reg & USBOTGSS_IRQMISC_CHRGVBUS_FALL)
29185d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "CHRGVBUS Fall\n");
29285d5e707SKishon Vijay Abraham I
29385d5e707SKishon Vijay Abraham I if (reg & USBOTGSS_IRQMISC_DISCHRGVBUS_FALL)
29485d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "DISCHRGVBUS Fall\n");
29585d5e707SKishon Vijay Abraham I
29685d5e707SKishon Vijay Abraham I if (reg & USBOTGSS_IRQMISC_IDPULLUP_FALL)
29785d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "IDPULLUP Fall\n");
29885d5e707SKishon Vijay Abraham I
29985d5e707SKishon Vijay Abraham I dwc3_omap_write_irqmisc_status(omap, reg);
30085d5e707SKishon Vijay Abraham I
30185d5e707SKishon Vijay Abraham I reg = dwc3_omap_read_irq0_status(omap);
30285d5e707SKishon Vijay Abraham I
30385d5e707SKishon Vijay Abraham I dwc3_omap_write_irq0_status(omap, reg);
30485d5e707SKishon Vijay Abraham I
30585d5e707SKishon Vijay Abraham I return IRQ_HANDLED;
30685d5e707SKishon Vijay Abraham I }
30785d5e707SKishon Vijay Abraham I
dwc3_omap_enable_irqs(struct dwc3_omap * omap)30885d5e707SKishon Vijay Abraham I static void dwc3_omap_enable_irqs(struct dwc3_omap *omap)
30985d5e707SKishon Vijay Abraham I {
31085d5e707SKishon Vijay Abraham I /* enable all IRQs */
3118af1be76SKishon Vijay Abraham I dwc3_omap_write_irq0_set(omap, USBOTGSS_IRQO_COREIRQ_ST);
31285d5e707SKishon Vijay Abraham I
3138af1be76SKishon Vijay Abraham I dwc3_omap_write_irqmisc_set(omap, USBOTGSS_INTERRUPTS);
31485d5e707SKishon Vijay Abraham I }
31585d5e707SKishon Vijay Abraham I
dwc3_omap_disable_irqs(struct dwc3_omap * omap)31685d5e707SKishon Vijay Abraham I static void dwc3_omap_disable_irqs(struct dwc3_omap *omap)
31785d5e707SKishon Vijay Abraham I {
31885d5e707SKishon Vijay Abraham I /* disable all IRQs */
3198af1be76SKishon Vijay Abraham I dwc3_omap_write_irq0_clr(omap, USBOTGSS_IRQO_COREIRQ_ST);
3208af1be76SKishon Vijay Abraham I
3218af1be76SKishon Vijay Abraham I dwc3_omap_write_irqmisc_clr(omap, USBOTGSS_INTERRUPTS);
32285d5e707SKishon Vijay Abraham I }
32385d5e707SKishon Vijay Abraham I
dwc3_omap_map_offset(struct dwc3_omap * omap)32485d5e707SKishon Vijay Abraham I static void dwc3_omap_map_offset(struct dwc3_omap *omap)
32585d5e707SKishon Vijay Abraham I {
32685d5e707SKishon Vijay Abraham I /*
32785d5e707SKishon Vijay Abraham I * Differentiate between OMAP5 and AM437x.
32885d5e707SKishon Vijay Abraham I *
32985d5e707SKishon Vijay Abraham I * For OMAP5(ES2.0) and AM437x wrapper revision is same, even
33085d5e707SKishon Vijay Abraham I * though there are changes in wrapper register offsets.
33185d5e707SKishon Vijay Abraham I *
33285d5e707SKishon Vijay Abraham I * Using dt compatible to differentiate AM437x.
33385d5e707SKishon Vijay Abraham I */
334c241d7eeSKishon Vijay Abraham I #ifdef CONFIG_AM43XX
33585d5e707SKishon Vijay Abraham I omap->irq_eoi_offset = USBOTGSS_EOI_OFFSET;
33685d5e707SKishon Vijay Abraham I omap->irq0_offset = USBOTGSS_IRQ0_OFFSET;
33785d5e707SKishon Vijay Abraham I omap->irqmisc_offset = USBOTGSS_IRQMISC_OFFSET;
33885d5e707SKishon Vijay Abraham I omap->utmi_otg_offset = USBOTGSS_UTMI_OTG_OFFSET;
33985d5e707SKishon Vijay Abraham I omap->debug_offset = USBOTGSS_DEBUG_OFFSET;
340c241d7eeSKishon Vijay Abraham I #endif
34185d5e707SKishon Vijay Abraham I }
34285d5e707SKishon Vijay Abraham I
dwc3_omap_set_utmi_mode(struct dwc3_omap * omap,int utmi_mode)343c241d7eeSKishon Vijay Abraham I static void dwc3_omap_set_utmi_mode(struct dwc3_omap *omap, int utmi_mode)
34485d5e707SKishon Vijay Abraham I {
34585d5e707SKishon Vijay Abraham I u32 reg;
34685d5e707SKishon Vijay Abraham I
34785d5e707SKishon Vijay Abraham I reg = dwc3_omap_read_utmi_status(omap);
34885d5e707SKishon Vijay Abraham I
34985d5e707SKishon Vijay Abraham I switch (utmi_mode) {
35085d5e707SKishon Vijay Abraham I case DWC3_OMAP_UTMI_MODE_SW:
35185d5e707SKishon Vijay Abraham I reg |= USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
35285d5e707SKishon Vijay Abraham I break;
35385d5e707SKishon Vijay Abraham I case DWC3_OMAP_UTMI_MODE_HW:
35485d5e707SKishon Vijay Abraham I reg &= ~USBOTGSS_UTMI_OTG_STATUS_SW_MODE;
35585d5e707SKishon Vijay Abraham I break;
35685d5e707SKishon Vijay Abraham I default:
35785d5e707SKishon Vijay Abraham I dev_dbg(omap->dev, "UNKNOWN utmi mode %d\n", utmi_mode);
35885d5e707SKishon Vijay Abraham I }
35985d5e707SKishon Vijay Abraham I
36085d5e707SKishon Vijay Abraham I dwc3_omap_write_utmi_status(omap, reg);
36185d5e707SKishon Vijay Abraham I }
36285d5e707SKishon Vijay Abraham I
363c241d7eeSKishon Vijay Abraham I /**
364c241d7eeSKishon Vijay Abraham I * dwc3_omap_uboot_init - dwc3 omap uboot initialization code
365c241d7eeSKishon Vijay Abraham I * @dev: struct dwc3_omap_device containing initialization data
366c241d7eeSKishon Vijay Abraham I *
367c241d7eeSKishon Vijay Abraham I * Entry point for dwc3 omap driver (equivalent to dwc3_omap_probe in linux
368c241d7eeSKishon Vijay Abraham I * kernel driver). Pointer to dwc3_omap_device should be passed containing
369c241d7eeSKishon Vijay Abraham I * base address and other initialization data. Returns '0' on success and
370c241d7eeSKishon Vijay Abraham I * a negative value on failure.
371c241d7eeSKishon Vijay Abraham I *
372c241d7eeSKishon Vijay Abraham I * Generally called from board_usb_init() implemented in board file.
373c241d7eeSKishon Vijay Abraham I */
dwc3_omap_uboot_init(struct dwc3_omap_device * omap_dev)374c241d7eeSKishon Vijay Abraham I int dwc3_omap_uboot_init(struct dwc3_omap_device *omap_dev)
37585d5e707SKishon Vijay Abraham I {
37685d5e707SKishon Vijay Abraham I u32 reg;
377c2ad4e1bSFelipe Balbi struct device *dev = NULL;
37857207657SKishon Vijay Abraham I struct dwc3_omap *omap;
37985d5e707SKishon Vijay Abraham I
380*0ad3f771SMugunthan V N omap = devm_kzalloc((struct udevice *)dev, sizeof(*omap), GFP_KERNEL);
38185d5e707SKishon Vijay Abraham I if (!omap)
38285d5e707SKishon Vijay Abraham I return -ENOMEM;
38385d5e707SKishon Vijay Abraham I
384c241d7eeSKishon Vijay Abraham I omap->base = omap_dev->base;
38557207657SKishon Vijay Abraham I omap->index = omap_dev->index;
38685d5e707SKishon Vijay Abraham I
38785d5e707SKishon Vijay Abraham I dwc3_omap_map_offset(omap);
388c241d7eeSKishon Vijay Abraham I dwc3_omap_set_utmi_mode(omap, omap_dev->utmi_mode);
38985d5e707SKishon Vijay Abraham I
39085d5e707SKishon Vijay Abraham I /* check the DMA Status */
39185d5e707SKishon Vijay Abraham I reg = dwc3_omap_readl(omap->base, USBOTGSS_SYSCONFIG);
39285d5e707SKishon Vijay Abraham I omap->dma_status = !!(reg & USBOTGSS_SYSCONFIG_DMADISABLE);
39385d5e707SKishon Vijay Abraham I
394c241d7eeSKishon Vijay Abraham I dwc3_omap_set_mailbox(omap, omap_dev->vbus_id_status);
395c241d7eeSKishon Vijay Abraham I
39685d5e707SKishon Vijay Abraham I dwc3_omap_enable_irqs(omap);
39757207657SKishon Vijay Abraham I list_add_tail(&omap->list, &dwc3_omap_list);
39885d5e707SKishon Vijay Abraham I
39985d5e707SKishon Vijay Abraham I return 0;
40085d5e707SKishon Vijay Abraham I }
40185d5e707SKishon Vijay Abraham I
402c241d7eeSKishon Vijay Abraham I /**
403c241d7eeSKishon Vijay Abraham I * dwc3_omap_uboot_exit - dwc3 omap uboot cleanup code
404c241d7eeSKishon Vijay Abraham I * @index: index of this controller
405c241d7eeSKishon Vijay Abraham I *
406c241d7eeSKishon Vijay Abraham I * Performs cleanup of memory allocated in dwc3_omap_uboot_init
40757207657SKishon Vijay Abraham I * (equivalent to dwc3_omap_remove in linux). index of _this_ controller
40857207657SKishon Vijay Abraham I * should be passed and should match with the index passed in
40957207657SKishon Vijay Abraham I * dwc3_omap_device during init.
410c241d7eeSKishon Vijay Abraham I *
411c241d7eeSKishon Vijay Abraham I * Generally called from board file.
412c241d7eeSKishon Vijay Abraham I */
dwc3_omap_uboot_exit(int index)41357207657SKishon Vijay Abraham I void dwc3_omap_uboot_exit(int index)
41485d5e707SKishon Vijay Abraham I {
41557207657SKishon Vijay Abraham I struct dwc3_omap *omap = NULL;
41685d5e707SKishon Vijay Abraham I
41757207657SKishon Vijay Abraham I list_for_each_entry(omap, &dwc3_omap_list, list) {
41857207657SKishon Vijay Abraham I if (omap->index != index)
41957207657SKishon Vijay Abraham I continue;
42057207657SKishon Vijay Abraham I
42157207657SKishon Vijay Abraham I dwc3_omap_disable_irqs(omap);
42257207657SKishon Vijay Abraham I list_del(&omap->list);
42357207657SKishon Vijay Abraham I kfree(omap);
42457207657SKishon Vijay Abraham I break;
42557207657SKishon Vijay Abraham I }
426c241d7eeSKishon Vijay Abraham I }
42785d5e707SKishon Vijay Abraham I
42853de33fcSKishon Vijay Abraham I /**
42953de33fcSKishon Vijay Abraham I * dwc3_omap_uboot_interrupt_status - check the status of interrupt
43053de33fcSKishon Vijay Abraham I * @index: index of this controller
43153de33fcSKishon Vijay Abraham I *
43253de33fcSKishon Vijay Abraham I * Checks the status of interrupts and returns true if an interrupt
43353de33fcSKishon Vijay Abraham I * is detected or false otherwise.
43453de33fcSKishon Vijay Abraham I *
43553de33fcSKishon Vijay Abraham I * Generally called from board file.
43653de33fcSKishon Vijay Abraham I */
dwc3_omap_uboot_interrupt_status(int index)43753de33fcSKishon Vijay Abraham I int dwc3_omap_uboot_interrupt_status(int index)
43853de33fcSKishon Vijay Abraham I {
43953de33fcSKishon Vijay Abraham I struct dwc3_omap *omap = NULL;
44053de33fcSKishon Vijay Abraham I
44153de33fcSKishon Vijay Abraham I list_for_each_entry(omap, &dwc3_omap_list, list)
44253de33fcSKishon Vijay Abraham I if (omap->index == index)
44353de33fcSKishon Vijay Abraham I return dwc3_omap_interrupt(-1, omap);
44453de33fcSKishon Vijay Abraham I
44553de33fcSKishon Vijay Abraham I return 0;
44653de33fcSKishon Vijay Abraham I }
44753de33fcSKishon Vijay Abraham I
44885d5e707SKishon Vijay Abraham I MODULE_ALIAS("platform:omap-dwc3");
44985d5e707SKishon Vijay Abraham I MODULE_AUTHOR("Felipe Balbi <balbi@ti.com>");
45085d5e707SKishon Vijay Abraham I MODULE_LICENSE("GPL v2");
45185d5e707SKishon Vijay Abraham I MODULE_DESCRIPTION("DesignWare USB3 OMAP Glue Layer");
452