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-rw-r--r--drivers/usb/host/ehci-mxs.c149
1 files changed, 81 insertions, 68 deletions
diff --git a/drivers/usb/host/ehci-mxs.c b/drivers/usb/host/ehci-mxs.c
index 0ca7545..f320d3e 100644
--- a/drivers/usb/host/ehci-mxs.c
+++ b/drivers/usb/host/ehci-mxs.c
@@ -22,86 +22,106 @@
#include <common.h>
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
+#include <errno.h>
#include "ehci.h"
-#if (CONFIG_EHCI_MXS_PORT != 0) && (CONFIG_EHCI_MXS_PORT != 1)
-#error "MXS EHCI: Invalid port selected!"
-#endif
-
-#ifndef CONFIG_EHCI_MXS_PORT
-#error "MXS EHCI: Please define correct port using CONFIG_EHCI_MXS_PORT!"
-#endif
+/* This DIGCTL register ungates clock to USB */
+#define HW_DIGCTL_CTRL 0x8001c000
+#define HW_DIGCTL_CTRL_USB0_CLKGATE (1 << 2)
+#define HW_DIGCTL_CTRL_USB1_CLKGATE (1 << 16)
-static struct ehci_mxs {
- struct mxs_usb_regs *usb_regs;
+struct ehci_mxs_port {
+ uint32_t usb_regs;
struct mxs_usbphy_regs *phy_regs;
-} ehci_mxs;
-int mxs_ehci_get_port(struct ehci_mxs *mxs_usb, int port)
+ struct mxs_register_32 *pll;
+ uint32_t pll_en_bits;
+ uint32_t pll_dis_bits;
+ uint32_t gate_bits;
+};
+
+static const struct ehci_mxs_port mxs_port[] = {
+#ifdef CONFIG_EHCI_MXS_PORT0
+ {
+ MXS_USBCTRL0_BASE,
+ (struct mxs_usbphy_regs *)MXS_USBPHY0_BASE,
+ (struct mxs_register_32 *)(MXS_CLKCTRL_BASE +
+ offsetof(struct mxs_clkctrl_regs,
+ hw_clkctrl_pll0ctrl0_reg)),
+ CLKCTRL_PLL0CTRL0_EN_USB_CLKS | CLKCTRL_PLL0CTRL0_POWER,
+ CLKCTRL_PLL0CTRL0_EN_USB_CLKS,
+ HW_DIGCTL_CTRL_USB0_CLKGATE,
+ },
+#endif
+#ifdef CONFIG_EHCI_MXS_PORT1
+ {
+ MXS_USBCTRL1_BASE,
+ (struct mxs_usbphy_regs *)MXS_USBPHY1_BASE,
+ (struct mxs_register_32 *)(MXS_CLKCTRL_BASE +
+ offsetof(struct mxs_clkctrl_regs,
+ hw_clkctrl_pll1ctrl0_reg)),
+ CLKCTRL_PLL1CTRL0_EN_USB_CLKS | CLKCTRL_PLL1CTRL0_POWER,
+ CLKCTRL_PLL1CTRL0_EN_USB_CLKS,
+ HW_DIGCTL_CTRL_USB1_CLKGATE,
+ },
+#endif
+};
+
+static int ehci_mxs_toggle_clock(const struct ehci_mxs_port *port, int enable)
{
- uint32_t usb_base, phy_base;
- switch (port) {
- case 0:
- usb_base = MXS_USBCTRL0_BASE;
- phy_base = MXS_USBPHY0_BASE;
- break;
- case 1:
- usb_base = MXS_USBCTRL1_BASE;
- phy_base = MXS_USBPHY1_BASE;
- break;
- default:
- printf("CONFIG_EHCI_MXS_PORT (port = %d)\n", port);
- return -1;
+ struct mxs_register_32 *digctl_ctrl =
+ (struct mxs_register_32 *)HW_DIGCTL_CTRL;
+ int pll_offset, dig_offset;
+
+ if (enable) {
+ pll_offset = offsetof(struct mxs_register_32, reg_set);
+ dig_offset = offsetof(struct mxs_register_32, reg_clr);
+ writel(port->gate_bits, (u32)&digctl_ctrl->reg + dig_offset);
+ writel(port->pll_en_bits, (u32)port->pll + pll_offset);
+ } else {
+ pll_offset = offsetof(struct mxs_register_32, reg_clr);
+ dig_offset = offsetof(struct mxs_register_32, reg_set);
+ writel(port->pll_dis_bits, (u32)port->pll + pll_offset);
+ writel(port->gate_bits, (u32)&digctl_ctrl->reg + dig_offset);
}
- mxs_usb->usb_regs = (struct mxs_usb_regs *)usb_base;
- mxs_usb->phy_regs = (struct mxs_usbphy_regs *)phy_base;
return 0;
}
-/* This DIGCTL register ungates clock to USB */
-#define HW_DIGCTL_CTRL 0x8001c000
-#define HW_DIGCTL_CTRL_USB0_CLKGATE (1 << 2)
-#define HW_DIGCTL_CTRL_USB1_CLKGATE (1 << 16)
-
int ehci_hcd_init(int index, struct ehci_hccr **hccr, struct ehci_hcor **hcor)
{
int ret;
uint32_t usb_base, cap_base;
- struct mxs_register_32 *digctl_ctrl =
- (struct mxs_register_32 *)HW_DIGCTL_CTRL;
- struct mxs_clkctrl_regs *clkctrl_regs =
- (struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
+ const struct ehci_mxs_port *port;
- ret = mxs_ehci_get_port(&ehci_mxs, CONFIG_EHCI_MXS_PORT);
- if (ret)
- return ret;
+ if ((index < 0) || (index >= ARRAY_SIZE(mxs_port))) {
+ printf("Invalid port index (index = %d)!\n", index);
+ return -EINVAL;
+ }
+
+ port = &mxs_port[index];
/* Reset the PHY block */
- writel(USBPHY_CTRL_SFTRST, &ehci_mxs.phy_regs->hw_usbphy_ctrl_set);
+ writel(USBPHY_CTRL_SFTRST, &port->phy_regs->hw_usbphy_ctrl_set);
udelay(10);
writel(USBPHY_CTRL_SFTRST | USBPHY_CTRL_CLKGATE,
- &ehci_mxs.phy_regs->hw_usbphy_ctrl_clr);
+ &port->phy_regs->hw_usbphy_ctrl_clr);
/* Enable USB clock */
- writel(CLKCTRL_PLL0CTRL0_EN_USB_CLKS | CLKCTRL_PLL0CTRL0_POWER,
- &clkctrl_regs->hw_clkctrl_pll0ctrl0_set);
- writel(CLKCTRL_PLL1CTRL0_EN_USB_CLKS | CLKCTRL_PLL1CTRL0_POWER,
- &clkctrl_regs->hw_clkctrl_pll1ctrl0_set);
-
- writel(HW_DIGCTL_CTRL_USB0_CLKGATE | HW_DIGCTL_CTRL_USB1_CLKGATE,
- &digctl_ctrl->reg_clr);
+ ret = ehci_mxs_toggle_clock(port, 1);
+ if (ret)
+ return ret;
/* Start USB PHY */
- writel(0, &ehci_mxs.phy_regs->hw_usbphy_pwd);
+ writel(0, &port->phy_regs->hw_usbphy_pwd);
/* Enable UTMI+ Level 2 and Level 3 compatibility */
writel(USBPHY_CTRL_ENUTMILEVEL3 | USBPHY_CTRL_ENUTMILEVEL2 | 1,
- &ehci_mxs.phy_regs->hw_usbphy_ctrl_set);
+ &port->phy_regs->hw_usbphy_ctrl_set);
- usb_base = ((uint32_t)ehci_mxs.usb_regs) + 0x100;
+ usb_base = port->usb_regs + 0x100;
*hccr = (struct ehci_hccr *)usb_base;
cap_base = ehci_readl(&(*hccr)->cr_capbase);
@@ -114,19 +134,19 @@ int ehci_hcd_stop(int index)
{
int ret;
uint32_t usb_base, cap_base, tmp;
- struct mxs_register_32 *digctl_ctrl =
- (struct mxs_register_32 *)HW_DIGCTL_CTRL;
- struct mxs_clkctrl_regs *clkctrl_regs =
- (struct mxs_clkctrl_regs *)MXS_CLKCTRL_BASE;
struct ehci_hccr *hccr;
struct ehci_hcor *hcor;
+ const struct ehci_mxs_port *port;
- ret = mxs_ehci_get_port(&ehci_mxs, CONFIG_EHCI_MXS_PORT);
- if (ret)
- return ret;
+ if ((index < 0) || (index >= ARRAY_SIZE(mxs_port))) {
+ printf("Invalid port index (index = %d)!\n", index);
+ return -EINVAL;
+ }
+
+ port = &mxs_port[index];
/* Stop the USB port */
- usb_base = ((uint32_t)ehci_mxs.usb_regs) + 0x100;
+ usb_base = port->usb_regs + 0x100;
hccr = (struct ehci_hccr *)usb_base;
cap_base = ehci_readl(&hccr->cr_capbase);
hcor = (struct ehci_hcor *)(usb_base + HC_LENGTH(cap_base));
@@ -140,17 +160,10 @@ int ehci_hcd_stop(int index)
USBPHY_PWD_RXPWD1PT1 | USBPHY_PWD_RXPWDENV |
USBPHY_PWD_TXPWDV2I | USBPHY_PWD_TXPWDIBIAS |
USBPHY_PWD_TXPWDFS;
- writel(tmp, &ehci_mxs.phy_regs->hw_usbphy_pwd);
+ writel(tmp, &port->phy_regs->hw_usbphy_pwd);
/* Disable USB clock */
- writel(CLKCTRL_PLL0CTRL0_EN_USB_CLKS,
- &clkctrl_regs->hw_clkctrl_pll0ctrl0_clr);
- writel(CLKCTRL_PLL1CTRL0_EN_USB_CLKS,
- &clkctrl_regs->hw_clkctrl_pll1ctrl0_clr);
+ ret = ehci_mxs_toggle_clock(port, 0);
- /* Gate off the USB clock */
- writel(HW_DIGCTL_CTRL_USB0_CLKGATE | HW_DIGCTL_CTRL_USB1_CLKGATE,
- &digctl_ctrl->reg_set);
-
- return 0;
+ return ret;
}
generated by cgit v1.1 at 2024-12-30 01:41:45 +0000