X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?p=linux-2.6-omap-h63xx.git;a=blobdiff_plain;f=arch%2Farm%2Fmach-omap2%2Fboard-n800-usb.c;fp=arch%2Farm%2Fmach-omap2%2Fboard-n800-usb.c;h=8250014bee6bdab7af34e23124e2896ed66010c2;hp=0000000000000000000000000000000000000000;hb=b934c987ee1764eb09b8843a3ee00eabc24bd52c;hpb=14fc69723d3442ef46f8f82b3f481e82f06a346d

diff --git a/arch/arm/mach-omap2/board-n800-usb.c b/arch/arm/mach-omap2/board-n800-usb.c
new file mode 100644
index 00000000000..8250014bee6
--- /dev/null
+++ b/arch/arm/mach-omap2/board-n800-usb.c
@@ -0,0 +1,175 @@
+/*
+ * linux/arch/arm/mach-omap2/board-n800-usb.c
+ *
+ * Copyright (C) 2006 Nokia Corporation
+ * Author: Juha Yrjola
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/usb/musb.h>
+#include <mach/gpmc.h>
+#include <mach/pm.h>
+
+#define TUSB_ASYNC_CS		1
+#define TUSB_SYNC_CS		4
+#define GPIO_TUSB_INT		58
+#define GPIO_TUSB_ENABLE	0
+
+static int tusb_set_power(int state);
+static int tusb_set_clock(struct clk *osc_ck, int state);
+
+#if	defined(CONFIG_USB_MUSB_OTG)
+#	define BOARD_MODE	MUSB_OTG
+#elif	defined(CONFIG_USB_MUSB_PERIPHERAL)
+#	define BOARD_MODE	MUSB_PERIPHERAL
+#else	/* defined(CONFIG_USB_MUSB_HOST) */
+#	define BOARD_MODE	MUSB_HOST
+#endif
+
+static struct musb_hdrc_eps_bits musb_eps[] = {
+	{	"ep1_tx", 5,	},
+	{	"ep1_rx", 5,	},
+	{	"ep2_tx", 5,	},
+	{	"ep2_rx", 5,	},
+	{	"ep3_tx", 3,	},
+	{	"ep3_rx", 3,	},
+	{	"ep4_tx", 3,	},
+	{	"ep4_rx", 3,	},
+	{	"ep5_tx", 2,	},
+	{	"ep5_rx", 2,	},
+	{	"ep6_tx", 2,	},
+	{	"ep6_rx", 2,	},
+	{	"ep7_tx", 2,	},
+	{	"ep7_rx", 2,	},
+	{	"ep8_tx", 2,	},
+	{	"ep8_rx", 2,	},
+	{	"ep9_tx", 2,	},
+	{	"ep9_rx", 2,	},
+	{	"ep10_tx", 2,	},
+	{	"ep10_rx", 2,	},
+	{	"ep11_tx", 2,	},
+	{	"ep11_rx", 2,	},
+	{	"ep12_tx", 2,	},
+	{	"ep12_rx", 2,	},
+	{	"ep13_tx", 2,	},
+	{	"ep13_rx", 2,	},
+	{	"ep14_tx", 2,	},
+	{	"ep14_rx", 2,	},
+	{	"ep15_tx", 2,	},
+	{	"ep15_rx", 2,	},
+};
+
+static struct musb_hdrc_config musb_config = {
+	.multipoint	= 1,
+	.dyn_fifo	= 1,
+	.soft_con	= 1,
+	.dma		= 1,
+	.num_eps	= 16,
+	.dma_channels	= 7,
+	.ram_bits	= 12,
+	.eps_bits	= musb_eps,
+};
+
+static struct musb_hdrc_platform_data tusb_data = {
+	.mode		= BOARD_MODE,
+	.set_power	= tusb_set_power,
+	.set_clock	= tusb_set_clock,
+	.min_power	= 25,	/* x2 = 50 mA drawn from VBUS as peripheral */
+	.power		= 100,	/* Max 100 mA VBUS for host mode */
+	.clock		= "osc_ck",
+	.config		= &musb_config,
+};
+
+/*
+ * Enable or disable power to TUSB6010. When enabling, turn on 3.3 V and
+ * 1.5 V voltage regulators of PM companion chip. Companion chip will then
+ * provide then PGOOD signal to TUSB6010 which will release it from reset.
+ */
+static int tusb_set_power(int state)
+{
+	int i, retval = 0;
+
+	if (state) {
+		gpio_set_value(GPIO_TUSB_ENABLE, 1);
+		msleep(1);
+
+		/* Wait until TUSB6010 pulls INT pin down */
+		i = 100;
+		while (i && gpio_get_value(GPIO_TUSB_INT)) {
+			msleep(1);
+			i--;
+		}
+
+		if (!i) {
+			printk(KERN_ERR "tusb: powerup failed\n");
+			retval = -ENODEV;
+		}
+	} else {
+		gpio_set_value(GPIO_TUSB_ENABLE, 0);
+		msleep(10);
+	}
+
+	return retval;
+}
+
+static int		osc_ck_on;
+
+static int tusb_set_clock(struct clk *osc_ck, int state)
+{
+	if (state) {
+		if (osc_ck_on > 0)
+			return -ENODEV;
+
+		//omap2_block_sleep();
+		clk_enable(osc_ck);
+		osc_ck_on = 1;
+	} else {
+		if (osc_ck_on == 0)
+			return -ENODEV;
+
+		clk_disable(osc_ck);
+		osc_ck_on = 0;
+		//omap2_allow_sleep();
+	}
+
+	return 0;
+}
+
+void __init n800_usb_init(void)
+{
+	int ret = 0;
+	static char	announce[] __initdata = KERN_INFO "TUSB 6010\n";
+
+	/* PM companion chip power control pin */
+	ret = gpio_request(GPIO_TUSB_ENABLE, "TUSB6010 enable");
+	if (ret != 0) {
+		printk(KERN_ERR "Could not get TUSB power GPIO%i\n",
+		       GPIO_TUSB_ENABLE);
+		return;
+	}
+	gpio_direction_output(GPIO_TUSB_ENABLE, 0);
+
+	tusb_set_power(0);
+
+	ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
+					TUSB_ASYNC_CS, TUSB_SYNC_CS,
+					GPIO_TUSB_INT, 0x3f);
+	if (ret != 0)
+		goto err;
+
+	printk(announce);
+
+	return;
+
+err:
+	gpio_free(GPIO_TUSB_ENABLE);
+}