Commit 66ee3bef authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Paul Mundt

ARM: mach-shmobile: mackerel: add renesas_usbhs support for USB1

renesas_usbhs driver can use external interrupt mode
(which come from USB-PHY) or autonomy mode (it use own interrupt)
for detecting connection/disconnection when Function.
And it will be power OFF while it has been disconnecting
if external interrupt mode is selected.

mackerel board has 2 USB ports.

But we can not use external interrupt mode
on CN22 USB0 port which is only for USB Function.
IRQ7-PORT40 is already used by Touchscreen,
and USB-PHY needs IRQ7-PORT167.
It is impossible to use IRQ7 demux on mackerel.

We can use external interrupt mode USB-Function on "USB1".
USB1 can become Host by r8a66597, and become Function by renesas_usbhs.
But don't select both drivers in same time.
These 2 drivers are not supporting IRQ SHARD.
Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarPaul Mundt <lethal@linux-sh.org>
parent 1acd3de5
......@@ -43,6 +43,7 @@
#include <linux/sh_intc.h>
#include <linux/tca6416_keypad.h>
#include <linux/usb/r8a66597.h>
#include <linux/usb/renesas_usbhs.h>
#include <video/sh_mobile_hdmi.h>
#include <video/sh_mobile_lcdc.h>
......@@ -143,7 +144,30 @@
* open | external VBUS | Function
*
* *1
* CN31 is used as Host in Linux.
* CN31 is used as
* CONFIG_USB_R8A66597_HCD Host
* CONFIG_USB_RENESAS_USBHS Function
*
* CAUTION
*
* renesas_usbhs driver can use external interrupt mode
* (which come from USB-PHY) or autonomy mode (it use own interrupt)
* for detecting connection/disconnection when Function.
* USB will be power OFF while it has been disconnecting
* if external interrupt mode, and it is always power ON if autonomy mode,
*
* mackerel can not use external interrupt (IRQ7-PORT167) mode on "USB0",
* because Touchscreen is using IRQ7-PORT40.
* It is impossible to use IRQ7 demux on this board.
*
* We can use external interrupt mode USB-Function on "USB1".
* USB1 can become Host by r8a66597, and become Function by renesas_usbhs.
* But don't select both drivers in same time.
* These uses same IRQ number for request_irq(), and aren't supporting
* IRQF_SHARD / IORESOURCE_IRQ_SHAREABLE.
*
* Actually these are old/new version of USB driver.
* This mean its register will be broken if it supports SHARD IRQ,
*/
/*
......@@ -185,6 +209,7 @@
* FIXME !!
*
* gpio_no_direction
* gpio_pull_down
* are quick_hack.
*
* current gpio frame work doesn't have
......@@ -196,6 +221,16 @@ static void __init gpio_no_direction(u32 addr)
__raw_writeb(0x00, addr);
}
static void __init gpio_pull_down(u32 addr)
{
u8 data = __raw_readb(addr);
data &= 0x0F;
data |= 0xA0;
__raw_writeb(data, addr);
}
/* MTD */
static struct mtd_partition nor_flash_partitions[] = {
{
......@@ -509,6 +544,157 @@ static struct platform_device usb1_host_device = {
.resource = usb1_host_resources,
};
/* USB1 (Function) */
#define USB_PHY_MODE (1 << 4)
#define USB_PHY_INT_EN ((1 << 3) | (1 << 2))
#define USB_PHY_ON (1 << 1)
#define USB_PHY_OFF (1 << 0)
#define USB_PHY_INT_CLR (USB_PHY_ON | USB_PHY_OFF)
struct usbhs_private {
unsigned int irq;
unsigned int usbphyaddr;
unsigned int usbcrcaddr;
struct renesas_usbhs_platform_info info;
};
#define usbhs_get_priv(pdev) \
container_of(renesas_usbhs_get_info(pdev), \
struct usbhs_private, info)
#define usbhs_is_connected(priv) \
(!((1 << 7) & __raw_readw(priv->usbcrcaddr)))
static int usbhs1_get_id(struct platform_device *pdev)
{
return USBHS_GADGET;
}
static int usbhs1_get_vbus(struct platform_device *pdev)
{
return usbhs_is_connected(usbhs_get_priv(pdev));
}
static irqreturn_t usbhs1_interrupt(int irq, void *data)
{
struct platform_device *pdev = data;
struct usbhs_private *priv = usbhs_get_priv(pdev);
dev_dbg(&pdev->dev, "%s\n", __func__);
renesas_usbhs_call_notify_hotplug(pdev);
/* clear status */
__raw_writew(__raw_readw(priv->usbphyaddr) | USB_PHY_INT_CLR,
priv->usbphyaddr);
return IRQ_HANDLED;
}
static int usbhs1_hardware_init(struct platform_device *pdev)
{
struct usbhs_private *priv = usbhs_get_priv(pdev);
int ret;
irq_set_irq_type(priv->irq, IRQ_TYPE_LEVEL_HIGH);
/* clear interrupt status */
__raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->usbphyaddr);
ret = request_irq(priv->irq, usbhs1_interrupt, 0,
dev_name(&pdev->dev), pdev);
if (ret) {
dev_err(&pdev->dev, "request_irq err\n");
return ret;
}
/* enable USB phy interrupt */
__raw_writew(USB_PHY_MODE | USB_PHY_INT_EN, priv->usbphyaddr);
return 0;
}
static void usbhs1_hardware_exit(struct platform_device *pdev)
{
struct usbhs_private *priv = usbhs_get_priv(pdev);
/* clear interrupt status */
__raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->usbphyaddr);
free_irq(priv->irq, pdev);
}
static void usbhs1_phy_reset(struct platform_device *pdev)
{
struct usbhs_private *priv = usbhs_get_priv(pdev);
/* init phy */
__raw_writew(0x8a0a, priv->usbcrcaddr);
}
static u32 usbhs1_pipe_cfg[] = {
USB_ENDPOINT_XFER_CONTROL,
USB_ENDPOINT_XFER_ISOC,
USB_ENDPOINT_XFER_ISOC,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_INT,
USB_ENDPOINT_XFER_INT,
USB_ENDPOINT_XFER_INT,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_BULK,
USB_ENDPOINT_XFER_BULK,
};
static struct usbhs_private usbhs1_private = {
.irq = evt2irq(0x0300), /* IRQ8 */
.usbphyaddr = 0xE60581E2, /* USBPHY1INTAP */
.usbcrcaddr = 0xE6058130, /* USBCR4 */
.info = {
.platform_callback = {
.hardware_init = usbhs1_hardware_init,
.hardware_exit = usbhs1_hardware_exit,
.phy_reset = usbhs1_phy_reset,
.get_id = usbhs1_get_id,
.get_vbus = usbhs1_get_vbus,
},
.driver_param = {
.buswait_bwait = 4,
.pipe_type = usbhs1_pipe_cfg,
.pipe_size = ARRAY_SIZE(usbhs1_pipe_cfg),
},
},
};
static struct resource usbhs1_resources[] = {
[0] = {
.name = "USBHS",
.start = 0xE68B0000,
.end = 0xE68B00E6 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = evt2irq(0x1ce0) /* USB1_USB1I0 */,
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device usbhs1_device = {
.name = "renesas_usbhs",
.id = 1,
.dev = {
.platform_data = &usbhs1_private.info,
},
.num_resources = ARRAY_SIZE(usbhs1_resources),
.resource = usbhs1_resources,
};
/* LED */
static struct gpio_led mackerel_leds[] = {
{
......@@ -949,6 +1135,7 @@ static struct platform_device *mackerel_devices[] __initdata = {
&smc911x_device,
&lcdc_device,
&usb1_host_device,
&usbhs1_device,
&leds_device,
&fsi_device,
&fsi_ak4643_device,
......@@ -1044,6 +1231,7 @@ static void __init mackerel_map_io(void)
#define GPIO_PORT9CR 0xE6051009
#define GPIO_PORT10CR 0xE605100A
#define GPIO_PORT168CR 0xE60520A8
#define SRCR4 0xe61580bc
#define USCCR1 0xE6058144
static void __init mackerel_init(void)
......@@ -1102,6 +1290,7 @@ static void __init mackerel_init(void)
gpio_request(GPIO_FN_OVCN_1_114, NULL);
gpio_request(GPIO_FN_EXTLP_1, NULL);
gpio_request(GPIO_FN_OVCN2_1, NULL);
gpio_pull_down(GPIO_PORT168CR);
/* setup USB phy */
__raw_writew(0x8a0a, 0xE6058130); /* USBCR4 */
......
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