forked from Minki/linux
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: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Kuninori Morimoto
Paul Mundt
parent
1acd3de54e
commit
66ee3bef3c
@ -43,6 +43,7 @@
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#include <linux/sh_intc.h>
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#include <linux/tca6416_keypad.h>
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#include <linux/usb/r8a66597.h>
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#include <linux/usb/renesas_usbhs.h>
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#include <video/sh_mobile_hdmi.h>
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#include <video/sh_mobile_lcdc.h>
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@ -143,7 +144,30 @@
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* open | external VBUS | Function
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*
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* *1
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* CN31 is used as Host in Linux.
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* CN31 is used as
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* CONFIG_USB_R8A66597_HCD Host
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* CONFIG_USB_RENESAS_USBHS Function
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*
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* CAUTION
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*
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* renesas_usbhs driver can use external interrupt mode
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* (which come from USB-PHY) or autonomy mode (it use own interrupt)
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* for detecting connection/disconnection when Function.
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* USB will be power OFF while it has been disconnecting
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* if external interrupt mode, and it is always power ON if autonomy mode,
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*
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* mackerel can not use external interrupt (IRQ7-PORT167) mode on "USB0",
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* because Touchscreen is using IRQ7-PORT40.
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* It is impossible to use IRQ7 demux on this board.
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*
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* We can use external interrupt mode USB-Function on "USB1".
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* USB1 can become Host by r8a66597, and become Function by renesas_usbhs.
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* But don't select both drivers in same time.
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* These uses same IRQ number for request_irq(), and aren't supporting
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* IRQF_SHARD / IORESOURCE_IRQ_SHAREABLE.
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*
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* Actually these are old/new version of USB driver.
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* This mean its register will be broken if it supports SHARD IRQ,
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*/
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/*
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@ -185,6 +209,7 @@
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* FIXME !!
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*
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* gpio_no_direction
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* gpio_pull_down
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* are quick_hack.
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*
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* current gpio frame work doesn't have
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@ -196,6 +221,16 @@ static void __init gpio_no_direction(u32 addr)
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__raw_writeb(0x00, addr);
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}
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static void __init gpio_pull_down(u32 addr)
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{
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u8 data = __raw_readb(addr);
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data &= 0x0F;
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data |= 0xA0;
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__raw_writeb(data, addr);
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}
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/* MTD */
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static struct mtd_partition nor_flash_partitions[] = {
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{
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@ -509,6 +544,157 @@ static struct platform_device usb1_host_device = {
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.resource = usb1_host_resources,
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};
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/* USB1 (Function) */
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#define USB_PHY_MODE (1 << 4)
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#define USB_PHY_INT_EN ((1 << 3) | (1 << 2))
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#define USB_PHY_ON (1 << 1)
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#define USB_PHY_OFF (1 << 0)
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#define USB_PHY_INT_CLR (USB_PHY_ON | USB_PHY_OFF)
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struct usbhs_private {
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unsigned int irq;
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unsigned int usbphyaddr;
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unsigned int usbcrcaddr;
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struct renesas_usbhs_platform_info info;
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};
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#define usbhs_get_priv(pdev) \
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container_of(renesas_usbhs_get_info(pdev), \
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struct usbhs_private, info)
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#define usbhs_is_connected(priv) \
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(!((1 << 7) & __raw_readw(priv->usbcrcaddr)))
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static int usbhs1_get_id(struct platform_device *pdev)
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{
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return USBHS_GADGET;
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}
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static int usbhs1_get_vbus(struct platform_device *pdev)
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{
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return usbhs_is_connected(usbhs_get_priv(pdev));
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}
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static irqreturn_t usbhs1_interrupt(int irq, void *data)
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{
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struct platform_device *pdev = data;
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struct usbhs_private *priv = usbhs_get_priv(pdev);
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dev_dbg(&pdev->dev, "%s\n", __func__);
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renesas_usbhs_call_notify_hotplug(pdev);
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/* clear status */
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__raw_writew(__raw_readw(priv->usbphyaddr) | USB_PHY_INT_CLR,
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priv->usbphyaddr);
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return IRQ_HANDLED;
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}
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static int usbhs1_hardware_init(struct platform_device *pdev)
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{
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struct usbhs_private *priv = usbhs_get_priv(pdev);
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int ret;
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irq_set_irq_type(priv->irq, IRQ_TYPE_LEVEL_HIGH);
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/* clear interrupt status */
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__raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->usbphyaddr);
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ret = request_irq(priv->irq, usbhs1_interrupt, 0,
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dev_name(&pdev->dev), pdev);
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if (ret) {
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dev_err(&pdev->dev, "request_irq err\n");
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return ret;
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}
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/* enable USB phy interrupt */
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__raw_writew(USB_PHY_MODE | USB_PHY_INT_EN, priv->usbphyaddr);
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return 0;
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}
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static void usbhs1_hardware_exit(struct platform_device *pdev)
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{
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struct usbhs_private *priv = usbhs_get_priv(pdev);
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/* clear interrupt status */
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__raw_writew(USB_PHY_MODE | USB_PHY_INT_CLR, priv->usbphyaddr);
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free_irq(priv->irq, pdev);
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}
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static void usbhs1_phy_reset(struct platform_device *pdev)
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{
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struct usbhs_private *priv = usbhs_get_priv(pdev);
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/* init phy */
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__raw_writew(0x8a0a, priv->usbcrcaddr);
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}
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static u32 usbhs1_pipe_cfg[] = {
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USB_ENDPOINT_XFER_CONTROL,
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USB_ENDPOINT_XFER_ISOC,
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USB_ENDPOINT_XFER_ISOC,
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USB_ENDPOINT_XFER_BULK,
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USB_ENDPOINT_XFER_BULK,
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USB_ENDPOINT_XFER_BULK,
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USB_ENDPOINT_XFER_INT,
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USB_ENDPOINT_XFER_INT,
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USB_ENDPOINT_XFER_INT,
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USB_ENDPOINT_XFER_BULK,
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USB_ENDPOINT_XFER_BULK,
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USB_ENDPOINT_XFER_BULK,
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USB_ENDPOINT_XFER_BULK,
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USB_ENDPOINT_XFER_BULK,
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USB_ENDPOINT_XFER_BULK,
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USB_ENDPOINT_XFER_BULK,
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};
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static struct usbhs_private usbhs1_private = {
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.irq = evt2irq(0x0300), /* IRQ8 */
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.usbphyaddr = 0xE60581E2, /* USBPHY1INTAP */
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.usbcrcaddr = 0xE6058130, /* USBCR4 */
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.info = {
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.platform_callback = {
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.hardware_init = usbhs1_hardware_init,
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.hardware_exit = usbhs1_hardware_exit,
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.phy_reset = usbhs1_phy_reset,
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.get_id = usbhs1_get_id,
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.get_vbus = usbhs1_get_vbus,
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},
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.driver_param = {
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.buswait_bwait = 4,
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.pipe_type = usbhs1_pipe_cfg,
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.pipe_size = ARRAY_SIZE(usbhs1_pipe_cfg),
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},
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},
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};
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static struct resource usbhs1_resources[] = {
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[0] = {
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.name = "USBHS",
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.start = 0xE68B0000,
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.end = 0xE68B00E6 - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = evt2irq(0x1ce0) /* USB1_USB1I0 */,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device usbhs1_device = {
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.name = "renesas_usbhs",
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.id = 1,
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.dev = {
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.platform_data = &usbhs1_private.info,
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},
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.num_resources = ARRAY_SIZE(usbhs1_resources),
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.resource = usbhs1_resources,
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};
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/* LED */
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static struct gpio_led mackerel_leds[] = {
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{
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@ -949,6 +1135,7 @@ static struct platform_device *mackerel_devices[] __initdata = {
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&smc911x_device,
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&lcdc_device,
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&usb1_host_device,
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&usbhs1_device,
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&leds_device,
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&fsi_device,
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&fsi_ak4643_device,
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@ -1044,6 +1231,7 @@ static void __init mackerel_map_io(void)
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#define GPIO_PORT9CR 0xE6051009
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#define GPIO_PORT10CR 0xE605100A
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#define GPIO_PORT168CR 0xE60520A8
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#define SRCR4 0xe61580bc
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#define USCCR1 0xE6058144
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static void __init mackerel_init(void)
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@ -1102,6 +1290,7 @@ static void __init mackerel_init(void)
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gpio_request(GPIO_FN_OVCN_1_114, NULL);
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gpio_request(GPIO_FN_EXTLP_1, NULL);
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gpio_request(GPIO_FN_OVCN2_1, NULL);
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gpio_pull_down(GPIO_PORT168CR);
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/* setup USB phy */
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__raw_writew(0x8a0a, 0xE6058130); /* USBCR4 */
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