sunxi: Move usb-controller init code out of ehci-sunxi.c for reuse for otg

Most of the usb-controller init code found in ehci-sunxi.c also is necessary
to init the otg usb controller, so move it to a common place.

While at it also update various #ifdefs / defines for sun8i support.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>

1 files changed, 10 insertions, 203 deletions

diff --git a/drivers/usb/host/ehci-sunxi.c b/drivers/usb/host/ehci-sunxi.c
index cc9a8fa..eda9f69 100644
--- a/drivers/usb/host/ehci-sunxi.c
+++ b/drivers/usb/host/ehci-sunxi.c
@@ -9,199 +9,23 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-#include <asm/arch/clock.h>
-#include <asm/arch/cpu.h>
-#include <asm/gpio.h>
-#include <asm/io.h>
+#include <asm/arch/usbc.h>
 #include <common.h>
 #include "ehci.h"
 
-#define SUNXI_USB_PMU_IRQ_ENABLE	0x800
-#define SUNXI_USB_CSR			0x404
-#define SUNXI_USB_PASSBY_EN		1
-
-#define SUNXI_EHCI_AHB_ICHR8_EN		(1 << 10)
-#define SUNXI_EHCI_AHB_INCR4_BURST_EN	(1 << 9)
-#define SUNXI_EHCI_AHB_INCRX_ALIGN_EN	(1 << 8)
-#define SUNXI_EHCI_ULPI_BYPASS_EN	(1 << 0)
-
-static struct sunxi_ehci_hcd {
-	struct usb_hcd *hcd;
-	int usb_rst_mask;
-	int ahb_clk_mask;
-	int gpio_vbus;
-	int irq;
-	int id;
-} sunxi_echi_hcd[] = {
-	{
-		.usb_rst_mask = CCM_USB_CTRL_PHY1_RST | CCM_USB_CTRL_PHY1_CLK,
-		.ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0,
-#ifndef CONFIG_MACH_SUN6I
-		.irq = 39,
-#else
-		.irq = 72,
-#endif
-		.id = 1,
-	},
-#if (CONFIG_USB_MAX_CONTROLLER_COUNT > 1)
-	{
-		.usb_rst_mask = CCM_USB_CTRL_PHY2_RST | CCM_USB_CTRL_PHY2_CLK,
-		.ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB_EHCI1,
-#ifndef CONFIG_MACH_SUN6I
-		.irq = 40,
-#else
-		.irq = 74,
-#endif
-		.id = 2,
-	}
-#endif
-};
-
-static int enabled_hcd_count;
-
-static void *get_io_base(int hcd_id)
-{
-	switch (hcd_id) {
-	case 0:
-		return (void *)SUNXI_USB0_BASE;
-	case 1:
-		return (void *)SUNXI_USB1_BASE;
-	case 2:
-		return (void *)SUNXI_USB2_BASE;
-	default:
-		return NULL;
-	}
-}
-
-static int get_vbus_gpio(int hcd_id)
-{
-	switch (hcd_id) {
-	case 1: return sunxi_name_to_gpio(CONFIG_USB1_VBUS_PIN);
-	case 2: return sunxi_name_to_gpio(CONFIG_USB2_VBUS_PIN);
-	}
-	return -1;
-}
-
-static void usb_phy_write(struct sunxi_ehci_hcd *sunxi_ehci, int addr,
-			  int data, int len)
-{
-	int j = 0, usbc_bit = 0;
-	void *dest = get_io_base(0) + SUNXI_USB_CSR;
-
-	usbc_bit = 1 << (sunxi_ehci->id * 2);
-	for (j = 0; j < len; j++) {
-		/* set the bit address to be written */
-		clrbits_le32(dest, 0xff << 8);
-		setbits_le32(dest, (addr + j) << 8);
-
-		clrbits_le32(dest, usbc_bit);
-		/* set data bit */
-		if (data & 0x1)
-			setbits_le32(dest, 1 << 7);
-		else
-			clrbits_le32(dest, 1 << 7);
-
-		setbits_le32(dest, usbc_bit);
-
-		clrbits_le32(dest, usbc_bit);
-
-		data >>= 1;
-	}
-}
-
-static void sunxi_usb_phy_init(struct sunxi_ehci_hcd *sunxi_ehci)
-{
-	/* The following comments are machine
-	 * translated from Chinese, you have been warned!
-	 */
-
-	/* adjust PHY's magnitude and rate */
-	usb_phy_write(sunxi_ehci, 0x20, 0x14, 5);
-
-	/* threshold adjustment disconnect */
-#if defined CONFIG_MACH_SUN4I || defined CONFIG_MACH_SUN6I
-	usb_phy_write(sunxi_ehci, 0x2a, 3, 2);
-#else
-	usb_phy_write(sunxi_ehci, 0x2a, 2, 2);
-#endif
-
-	return;
-}
-
-static void sunxi_usb_passby(struct sunxi_ehci_hcd *sunxi_ehci, int enable)
-{
-	unsigned long bits = 0;
-	void *addr = get_io_base(sunxi_ehci->id) + SUNXI_USB_PMU_IRQ_ENABLE;
-
-	bits = SUNXI_EHCI_AHB_ICHR8_EN |
-		SUNXI_EHCI_AHB_INCR4_BURST_EN |
-		SUNXI_EHCI_AHB_INCRX_ALIGN_EN |
-		SUNXI_EHCI_ULPI_BYPASS_EN;
-
-	if (enable)
-		setbits_le32(addr, bits);
-	else
-		clrbits_le32(addr, bits);
-
-	return;
-}
-
-static void sunxi_ehci_enable(struct sunxi_ehci_hcd *sunxi_ehci)
-{
-	struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
-
-	setbits_le32(&ccm->usb_clk_cfg, sunxi_ehci->usb_rst_mask);
-	setbits_le32(&ccm->ahb_gate0, sunxi_ehci->ahb_clk_mask);
-#ifdef CONFIG_MACH_SUN6I
-	setbits_le32(&ccm->ahb_reset0_cfg, sunxi_ehci->ahb_clk_mask);
-#endif
-
-	sunxi_usb_phy_init(sunxi_ehci);
-
-	sunxi_usb_passby(sunxi_ehci, SUNXI_USB_PASSBY_EN);
-
-	if (sunxi_ehci->gpio_vbus != -1)
-		gpio_direction_output(sunxi_ehci->gpio_vbus, 1);
-}
-
-static void sunxi_ehci_disable(struct sunxi_ehci_hcd *sunxi_ehci)
-{
-	struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
-
-	if (sunxi_ehci->gpio_vbus != -1)
-		gpio_direction_output(sunxi_ehci->gpio_vbus, 0);
-
-	sunxi_usb_passby(sunxi_ehci, !SUNXI_USB_PASSBY_EN);
-
-#ifdef CONFIG_MACH_SUN6I
-	clrbits_le32(&ccm->ahb_reset0_cfg, sunxi_ehci->ahb_clk_mask);
-#endif
-	clrbits_le32(&ccm->ahb_gate0, sunxi_ehci->ahb_clk_mask);
-	clrbits_le32(&ccm->usb_clk_cfg, sunxi_ehci->usb_rst_mask);
-}
-
 int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr,
 		struct ehci_hcor **hcor)
 {
-	struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
-	struct sunxi_ehci_hcd *sunxi_ehci = &sunxi_echi_hcd[index];
 	int err;
 
-	sunxi_ehci->gpio_vbus = get_vbus_gpio(sunxi_ehci->id);
+	err = sunxi_usbc_request_resources(index + 1);
+	if (err)
+		return err;
 
-	/* enable common PHY only once */
-	if (index == 0)
-		setbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE);
+	sunxi_usbc_enable(index + 1);
+	sunxi_usbc_vbus_enable(index + 1);
 
-	if (sunxi_ehci->gpio_vbus != -1) {
-		err = gpio_request(sunxi_ehci->gpio_vbus, "ehci_vbus");
-		if (err)
-			return err;
-	}
-
-	sunxi_ehci_enable(sunxi_ehci);
-
-	*hccr = get_io_base(sunxi_ehci->id);
+	*hccr = sunxi_usbc_get_io_base(index + 1);
 
 	*hcor = (struct ehci_hcor *)((uint32_t) *hccr
 				+ HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
@@ -210,30 +34,13 @@ int ehci_hcd_init(int index, enum usb_init_type init, struct ehci_hccr **hccr,
 	      (uint32_t)*hccr, (uint32_t)*hcor,
 	      (uint32_t)HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
 
-	enabled_hcd_count++;
-
 	return 0;
 }
 
 int ehci_hcd_stop(int index)
 {
-	struct sunxi_ccm_reg *ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
-	struct sunxi_ehci_hcd *sunxi_ehci = &sunxi_echi_hcd[index];
-	int err;
-
-	sunxi_ehci_disable(sunxi_ehci);
-
-	if (sunxi_ehci->gpio_vbus != -1) {
-		err = gpio_free(sunxi_ehci->gpio_vbus);
-		if (err)
-			return err;
-	}
+	sunxi_usbc_vbus_disable(index + 1);
+	sunxi_usbc_disable(index + 1);
 
-	/* disable common PHY only once, for the last enabled hcd */
-	if (enabled_hcd_count == 1)
-		clrbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE);
-
-	enabled_hcd_count--;
-
-	return 0;
+	return sunxi_usbc_free_resources(index + 1);
 }