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ar71xx: rework chipidea controller support, add QCA9531

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Rework (again) platform support for dual-role chipidea USB controller:

- include support for QCA9531
- use correct EHCI block size
- drop ar933x_usb_setup_ctrl_config() function
- simplify code after previous "register chipidea only in device mode"
  change (fa22714181)

Reworked patch was tested on devices with below QCA WiSOCs (signal/GPIO
name with required bootstrap state for USB bus 0 in device mode):

- AR9331  (GPIO13 pull-down)
- AR9342  (RGMII_TXD1/ETXD1 pull-up)
- AR9344  (GPIO20 pull-up)
- QCA9531 (GPIO13 pull-up)
- QCA9558 (GPIO13 pull-up)

The only way to select device mode for bus 0 is to change SOC bootstrap
configuration which is sampled only once, at hard reset. Likely, other
models, like QCA9556 or AR9341, should also support dual-role USB mode
but they were not tested.

Signed-off-by: Piotr Dymacz <pepe2k@gmail.com>
This commit is contained in:
Piotr Dymacz 2018-03-10 00:06:50 +01:00
parent 10ea53f900
commit 57c641ba6e
1 changed files with 31 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
target/linux/ar71xx/patches-4.9/920-usb-chipidea-AR933x-platform-support.patch
View File

@ -29,48 +29,35 @@
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
@@ -170,6 +173,64 @@ static void __init ar913x_usb_setup(void
@@ -170,6 +173,44 @@ static void __init ar913x_usb_setup(void
&ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
}
+static void __init ar933x_usb_setup_ctrl_config(void)
+{
+ void __iomem *usb_ctrl_base, *usb_config_reg;
+ u32 usb_config;
+
+ usb_ctrl_base = ioremap(AR71XX_USB_CTRL_BASE, AR71XX_USB_CTRL_SIZE);
+ usb_config_reg = usb_ctrl_base + AR71XX_USB_CTRL_REG_CONFIG;
+ usb_config = __raw_readl(usb_config_reg);
+ usb_config &= ~AR933X_USB_CONFIG_HOST_ONLY;
+ __raw_writel(usb_config, usb_config_reg);
+ iounmap(usb_ctrl_base);
+}
+
+static void __init ar9xxx_ci_usb_setup(int irq)
+static void __init ar9xxx_ci_usb_setup(int bus_id, int irq)
+{
+ struct ci_hdrc_platform_data ci_pdata;
+ enum usb_dr_mode dr_mode;
+ bool host_mode = true;
+
+ if (soc_is_ar933x())
+ host_mode = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP) &
+ AR933X_BOOTSTRAP_USB_MODE_HOST;
+ else if (soc_is_ar934x() || soc_is_qca955x())
+ else
+ host_mode = !(ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP) &
+ AR934X_BOOTSTRAP_USB_MODE_DEVICE);
+
+ if (host_mode) {
+ dr_mode = USB_DR_MODE_HOST;
+ } else {
+ dr_mode = USB_DR_MODE_PERIPHERAL;
+ if (soc_is_ar933x())
+ ar933x_usb_setup_ctrl_config();
+ ath79_usb_register("ehci-platform", bus_id,
+ AR934X_EHCI_BASE, AR934X_EHCI_SIZE,
+ irq, &ath79_ehci_pdata_v2,
+ sizeof(ath79_ehci_pdata_v2));
+
+ return;
+ }
+
+ memset(&ci_pdata, 0, sizeof(ci_pdata));
+ ci_pdata.name = "ci_hdrc_ar9xxx";
+ ci_pdata.capoffset = DEF_CAPOFFSET;
+ ci_pdata.dr_mode = dr_mode;
+ ci_pdata.dr_mode = USB_DR_MODE_PERIPHERAL;
+ ci_pdata.flags = CI_HDRC_DUAL_ROLE_NOT_OTG | CI_HDRC_DP_ALWAYS_PULLUP;
+ ci_pdata.vbus_extcon.edev = ERR_PTR(-ENODEV);
+ ci_pdata.id_extcon.edev = ERR_PTR(-ENODEV);
@ -79,22 +66,15 @@
+ platform_device_register_simple("usb_phy_generic",
+ PLATFORM_DEVID_AUTO, NULL, 0);
+
+ if (!host_mode)
+ ath79_usb_register("ci_hdrc", -1,
+ AR933X_EHCI_BASE, AR933X_EHCI_SIZE,
+ irq, &ci_pdata, sizeof(ci_pdata));
+ else
+ ath79_usb_register("ehci-platform", -1,
+ AR934X_EHCI_BASE, AR934X_EHCI_SIZE,
+ irq, &ath79_ehci_pdata_v2,
+ sizeof(ath79_ehci_pdata_v2));
+
+ ath79_usb_register("ci_hdrc", -1,
+ AR934X_EHCI_BASE, AR934X_EHCI_SIZE,
+ irq, &ci_pdata, sizeof(ci_pdata));
+}
+
static void __init ar933x_usb_setup(void)
{
ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE);
@@ -181,10 +242,7 @@ static void __init ar933x_usb_setup(void
@@ -181,10 +222,7 @@ static void __init ar933x_usb_setup(void
ath79_device_reset_clear(AR933X_RESET_USB_PHY);
mdelay(10);
@ -102,11 +82,11 @@
- AR933X_EHCI_BASE, AR933X_EHCI_SIZE,
- ATH79_CPU_IRQ(3),
- &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
+ ar9xxx_ci_usb_setup(ATH79_CPU_IRQ(3));
+ ar9xxx_ci_usb_setup(-1, ATH79_CPU_IRQ(3));
}
static void enable_tx_tx_idp_violation_fix(unsigned base)
@@ -230,10 +288,7 @@ static void __init ar934x_usb_setup(void
@@ -230,10 +268,7 @@ static void __init ar934x_usb_setup(void
if (ath79_soc_rev >= 3)
ath79_ehci_pdata_v2.reset_notifier = ar934x_usb_reset_notifier;
@ -114,11 +94,23 @@
- AR934X_EHCI_BASE, AR934X_EHCI_SIZE,
- ATH79_CPU_IRQ(3),
- &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
+ ar9xxx_ci_usb_setup(ATH79_CPU_IRQ(3));
+ ar9xxx_ci_usb_setup(-1, ATH79_CPU_IRQ(3));
}
static void __init qca953x_usb_setup(void)
@@ -285,10 +340,7 @@ static void __init qca955x_usb_setup(voi
@@ -254,10 +289,7 @@ static void __init qca953x_usb_setup(voi
ath79_device_reset_clear(QCA953X_RESET_USB_HOST);
udelay(1000);
- ath79_usb_register("ehci-platform", -1,
- QCA953X_EHCI_BASE, QCA953X_EHCI_SIZE,
- ATH79_CPU_IRQ(3),
- &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
+ ar9xxx_ci_usb_setup(-1, ATH79_CPU_IRQ(3));
}
static void qca955x_usb_reset_notifier(struct platform_device *pdev)
@@ -285,10 +317,7 @@ static void __init qca955x_usb_setup(voi
{
ath79_ehci_pdata_v2.reset_notifier = qca955x_usb_reset_notifier;
@ -126,7 +118,7 @@
- QCA955X_EHCI0_BASE, QCA955X_EHCI_SIZE,
- ATH79_IP3_IRQ(0),
- &ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
+ ar9xxx_ci_usb_setup(ATH79_IP3_IRQ(0));
+ ar9xxx_ci_usb_setup(0, ATH79_IP3_IRQ(0));
ath79_usb_register("ehci-platform", 1,
QCA955X_EHCI1_BASE, QCA955X_EHCI_SIZE,