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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-10-24 15:03:12 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-10-24 15:03:12 +0300
commit2d5afd51fe6b469e09d8d63fff041cbf4a987278 (patch)
tree01ab99155c167c6203793e5c604e895d9af10588 /drivers/usb/renesas_usbhs
parent0520d37bb3d49f8e62e30c80b001e0003b3f3ca9 (diff)
parentce2b21a4e5ce042c0a42c9db8fa9e0f849427d5e (diff)
downloadlinux-2d5afd51fe6b469e09d8d63fff041cbf4a987278.tar.xz
Merge tag 'usb-for-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-next
Felipe writes: usb: changes for v4.15 merge window Not much going on this time around. With only 51 non-merge commits, this was one of the smallest pull requests from the Gadget tree. Most of the changes are in the mtu3 driver which added support for 36-bit DMA, support for USB 3.1 and support for dual-role (along with some non-critical fixes). The dwc2 driver got a few improvements to how we handle gadget state tracking and also added support for STM32F7xx devices. Other than that, we just some minor non-critical fixes and improvements all over the place.
Diffstat (limited to 'drivers/usb/renesas_usbhs')
-rw-r--r--drivers/usb/renesas_usbhs/common.c24
-rw-r--r--drivers/usb/renesas_usbhs/rcar3.c48
-rw-r--r--drivers/usb/renesas_usbhs/rcar3.h1
3 files changed, 62 insertions, 11 deletions
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index f0ce304c5aaf..490ebc7df7b2 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -486,6 +486,10 @@ static const struct of_device_id usbhs_of_match[] = {
.data = (void *)USBHS_TYPE_RCAR_GEN3,
},
{
+ .compatible = "renesas,usbhs-r8a77995",
+ .data = (void *)USBHS_TYPE_RCAR_GEN3_WITH_PLL,
+ },
+ {
.compatible = "renesas,rcar-gen2-usbhs",
.data = (void *)USBHS_TYPE_RCAR_GEN2,
},
@@ -501,7 +505,6 @@ static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev)
{
struct renesas_usbhs_platform_info *info;
struct renesas_usbhs_driver_param *dparam;
- const struct of_device_id *of_id = of_match_device(usbhs_of_match, dev);
u32 tmp;
int gpio;
@@ -510,7 +513,7 @@ static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev)
return NULL;
dparam = &info->driver_param;
- dparam->type = of_id ? (uintptr_t)of_id->data : 0;
+ dparam->type = (uintptr_t)of_device_get_match_data(dev);
if (!of_property_read_u32(dev->of_node, "renesas,buswait", &tmp))
dparam->buswait_bwait = tmp;
gpio = of_get_named_gpio_flags(dev->of_node, "renesas,enable-gpio", 0,
@@ -519,8 +522,12 @@ static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev)
dparam->enable_gpio = gpio;
if (dparam->type == USBHS_TYPE_RCAR_GEN2 ||
- dparam->type == USBHS_TYPE_RCAR_GEN3)
+ dparam->type == USBHS_TYPE_RCAR_GEN3 ||
+ dparam->type == USBHS_TYPE_RCAR_GEN3_WITH_PLL) {
dparam->has_usb_dmac = 1;
+ dparam->pipe_configs = usbhsc_new_pipe;
+ dparam->pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
+ }
return info;
}
@@ -577,17 +584,12 @@ static int usbhs_probe(struct platform_device *pdev)
switch (priv->dparam.type) {
case USBHS_TYPE_RCAR_GEN2:
priv->pfunc = usbhs_rcar2_ops;
- if (!priv->dparam.pipe_configs) {
- priv->dparam.pipe_configs = usbhsc_new_pipe;
- priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
- }
break;
case USBHS_TYPE_RCAR_GEN3:
priv->pfunc = usbhs_rcar3_ops;
- if (!priv->dparam.pipe_configs) {
- priv->dparam.pipe_configs = usbhsc_new_pipe;
- priv->dparam.pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
- }
+ break;
+ case USBHS_TYPE_RCAR_GEN3_WITH_PLL:
+ priv->pfunc = usbhs_rcar3_with_pll_ops;
break;
default:
if (!info->platform_callback.get_id) {
diff --git a/drivers/usb/renesas_usbhs/rcar3.c b/drivers/usb/renesas_usbhs/rcar3.c
index 02b67abfc2a1..f436e9d51127 100644
--- a/drivers/usb/renesas_usbhs/rcar3.c
+++ b/drivers/usb/renesas_usbhs/rcar3.c
@@ -15,24 +15,39 @@
#include "rcar3.h"
#define LPSTS 0x102
+#define UGCTRL 0x180 /* 32-bit register */
#define UGCTRL2 0x184 /* 32-bit register */
+#define UGSTS 0x188 /* 32-bit register */
/* Low Power Status register (LPSTS) */
#define LPSTS_SUSPM 0x4000
+/* R-Car D3 only: USB General control register (UGCTRL) */
+#define UGCTRL_PLLRESET 0x00000001
+#define UGCTRL_CONNECT 0x00000004
+
/*
* USB General control register 2 (UGCTRL2)
* Remarks: bit[31:11] and bit[9:6] should be 0
*/
#define UGCTRL2_RESERVED_3 0x00000001 /* bit[3:0] should be B'0001 */
+#define UGCTRL2_USB0SEL_HSUSB 0x00000020
#define UGCTRL2_USB0SEL_OTG 0x00000030
#define UGCTRL2_VBUSSEL 0x00000400
+/* R-Car D3 only: USB General status register (UGSTS) */
+#define UGSTS_LOCK 0x00000100
+
static void usbhs_write32(struct usbhs_priv *priv, u32 reg, u32 data)
{
iowrite32(data, priv->base + reg);
}
+static u32 usbhs_read32(struct usbhs_priv *priv, u32 reg)
+{
+ return ioread32(priv->base + reg);
+}
+
static int usbhs_rcar3_power_ctrl(struct platform_device *pdev,
void __iomem *base, int enable)
{
@@ -52,6 +67,34 @@ static int usbhs_rcar3_power_ctrl(struct platform_device *pdev,
return 0;
}
+/* R-Car D3 needs to release UGCTRL.PLLRESET */
+static int usbhs_rcar3_power_and_pll_ctrl(struct platform_device *pdev,
+ void __iomem *base, int enable)
+{
+ struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
+ u32 val;
+ int timeout = 1000;
+
+ if (enable) {
+ usbhs_write32(priv, UGCTRL, 0); /* release PLLRESET */
+ usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 |
+ UGCTRL2_USB0SEL_HSUSB);
+
+ usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM);
+ do {
+ val = usbhs_read32(priv, UGSTS);
+ udelay(1);
+ } while (!(val & UGSTS_LOCK) && timeout--);
+ usbhs_write32(priv, UGCTRL, UGCTRL_CONNECT);
+ } else {
+ usbhs_write32(priv, UGCTRL, 0);
+ usbhs_bset(priv, LPSTS, LPSTS_SUSPM, 0);
+ usbhs_write32(priv, UGCTRL, UGCTRL_PLLRESET);
+ }
+
+ return 0;
+}
+
static int usbhs_rcar3_get_id(struct platform_device *pdev)
{
return USBHS_GADGET;
@@ -61,3 +104,8 @@ const struct renesas_usbhs_platform_callback usbhs_rcar3_ops = {
.power_ctrl = usbhs_rcar3_power_ctrl,
.get_id = usbhs_rcar3_get_id,
};
+
+const struct renesas_usbhs_platform_callback usbhs_rcar3_with_pll_ops = {
+ .power_ctrl = usbhs_rcar3_power_and_pll_ctrl,
+ .get_id = usbhs_rcar3_get_id,
+};
diff --git a/drivers/usb/renesas_usbhs/rcar3.h b/drivers/usb/renesas_usbhs/rcar3.h
index 5f850b23ff18..7fe98175f94f 100644
--- a/drivers/usb/renesas_usbhs/rcar3.h
+++ b/drivers/usb/renesas_usbhs/rcar3.h
@@ -1,3 +1,4 @@
#include "common.h"
extern const struct renesas_usbhs_platform_callback usbhs_rcar3_ops;
+extern const struct renesas_usbhs_platform_callback usbhs_rcar3_with_pll_ops;