diff options
author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2011-05-25 07:56:25 +0000 |
---|---|---|
committer | Paul Mundt <lethal@linux-sh.org> | 2011-05-25 17:07:36 +0900 |
commit | 66ee3bef3ce0bab155de082805388bd6ec2785f8 (patch) | |
tree | 6ab6da16cf6f0153b6aaf3c34e2f120fb1a8d591 /arch/arm | |
parent | 1acd3de54e242834a385810bc3f0fd44211e494e (diff) |
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>
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/mach-shmobile/board-mackerel.c | 191 |
1 files changed, 190 insertions, 1 deletions
diff --git a/arch/arm/mach-shmobile/board-mackerel.c b/arch/arm/mach-shmobile/board-mackerel.c index 0d882754bff..448ddbe4333 100644 --- a/arch/arm/mach-shmobile/board-mackerel.c +++ b/arch/arm/mach-shmobile/board-mackerel.c @@ -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 */ |