/*
- * Copyright (C) 2014 Roman Byshko
+ * Sunxi ehci glue
*
- * Roman Byshko <rbyshko@gmail.com>
+ * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
+ * Copyright (C) 2014 Roman Byshko <rbyshko@gmail.com>
*
* Based on code from
* Allwinner Technology Co., Ltd. <www.allwinnertech.com>
* SPDX-License-Identifier: GPL-2.0+
*/
+#include <common.h>
#include <asm/arch/clock.h>
-#include <asm/gpio.h>
+#include <asm/arch/usbc.h>
#include <asm/io.h>
-#include <common.h>
#include "ehci.h"
-#define SUNXI_USB1_IO_BASE 0x01c14000
-#define SUNXI_USB2_IO_BASE 0x01c1c000
-
-#define SUNXI_USB_PMU_IRQ_ENABLE 0x800
-#define SUNXI_USB_CSR 0x01c13404
-#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;
- void *csr;
- int irq;
- int id;
-} sunxi_echi_hcd[] = {
- {
- .usb_rst_mask = CCM_USB_CTRL_PHY1_RST,
- .ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0,
- .gpio_vbus = CONFIG_SUNXI_USB_VBUS0_GPIO,
- .csr = (void *)SUNXI_USB_CSR,
- .irq = 39,
- .id = 1,
- },
-#if (CONFIG_USB_MAX_CONTROLLER_COUNT > 1)
- {
- .usb_rst_mask = CCM_USB_CTRL_PHY2_RST,
- .ahb_clk_mask = 1 << AHB_GATE_OFFSET_USB_EHCI1,
- .gpio_vbus = CONFIG_SUNXI_USB_VBUS1_GPIO,
- .csr = (void *)SUNXI_USB_CSR,
- .irq = 40,
- .id = 2,
- }
-#endif
-};
-
-static int enabled_hcd_count;
-
-static void *get_io_base(int hcd_id)
-{
- if (hcd_id == 1)
- return (void *)SUNXI_USB1_IO_BASE;
- else if (hcd_id == 2)
- return (void *)SUNXI_USB2_IO_BASE;
- else
- return NULL;
-}
-
-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 = sunxi_ehci->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 */
-#ifdef CONFIG_MACH_SUN4I
- 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);
-
- sunxi_usb_phy_init(sunxi_ehci);
-
- sunxi_usb_passby(sunxi_ehci, SUNXI_USB_PASSBY_EN);
-
- 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;
-
- gpio_direction_output(sunxi_ehci->gpio_vbus, 0);
-
- sunxi_usb_passby(sunxi_ehci, !SUNXI_USB_PASSBY_EN);
-
- 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;
-
- /* enable common PHY only once */
- if (index == 0)
- setbits_le32(&ccm->usb_clk_cfg, CCM_USB_CTRL_PHYGATE);
+ int ahb_gate_offset, err;
- err = gpio_request(sunxi_ehci->gpio_vbus, "ehci_vbus");
+ err = sunxi_usb_phy_probe(index + 1);
if (err)
return err;
- sunxi_ehci_enable(sunxi_ehci);
+ ahb_gate_offset = index ? AHB_GATE_OFFSET_USB_EHCI1 :
+ AHB_GATE_OFFSET_USB_EHCI0;
+ setbits_le32(&ccm->ahb_gate0, 1 << ahb_gate_offset);
+#ifdef CONFIG_SUNXI_GEN_SUN6I
+ setbits_le32(&ccm->ahb_reset0_cfg, 1 << ahb_gate_offset);
+#endif
+
+ sunxi_usb_phy_init(index + 1);
+ sunxi_usb_phy_power_on(index + 1);
- *hccr = get_io_base(sunxi_ehci->id);
+ if (index == 0)
+ *hccr = (void *)SUNXI_USB1_BASE;
+ else
+ *hccr = (void *)SUNXI_USB2_BASE;
*hcor = (struct ehci_hcor *)((uint32_t) *hccr
+ HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase)));
(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);
+ int ahb_gate_offset;
- err = gpio_free(sunxi_ehci->gpio_vbus);
- if (err)
- return err;
+ sunxi_usb_phy_power_off(index + 1);
+ sunxi_usb_phy_exit(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--;
+ ahb_gate_offset = index ? AHB_GATE_OFFSET_USB_EHCI1 :
+ AHB_GATE_OFFSET_USB_EHCI0;
+#ifdef CONFIG_SUNXI_GEN_SUN6I
+ clrbits_le32(&ccm->ahb_reset0_cfg, 1 << ahb_gate_offset);
+#endif
+ clrbits_le32(&ccm->ahb_gate0, 1 << ahb_gate_offset);
- return 0;
+ return sunxi_usb_phy_remove(index + 1);
}
projects / platform / kernel / u-boot.git / blobdiff