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From: Vignesh R <vigneshr@ti.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 06/11] drivers: usb: common: add support to get maximum speed from dt
Date: Tue, 23 May 2017 17:25:41 +0530	[thread overview]
Message-ID: <20170523115546.399-7-vigneshr@ti.com> (raw)
In-Reply-To: <20170523115546.399-1-vigneshr@ti.com>

From: Mugunthan V N <mugunthanvnm@ti.com>

Add support to get maximum speed from dt so that usb drivers
makes use of it for DT parsing.

Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
---
 drivers/usb/common/common.c | 29 +++++++++++++++++++++++++++++
 include/linux/usb/otg.h     |  9 +++++++++
 scripts/Makefile.spl        |  1 +
 3 files changed, 39 insertions(+)

diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c
index 35c2dc18d955..c11689dc36fa 100644
--- a/drivers/usb/common/common.c
+++ b/drivers/usb/common/common.c
@@ -10,6 +10,7 @@
 #include <common.h>
 #include <libfdt.h>
 #include <linux/usb/otg.h>
+#include <linux/usb/ch9.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -38,3 +39,31 @@ enum usb_dr_mode usb_get_dr_mode(int node)
 
 	return USB_DR_MODE_UNKNOWN;
 }
+
+static const char *const speed_names[] = {
+	[USB_SPEED_UNKNOWN] = "UNKNOWN",
+	[USB_SPEED_LOW] = "low-speed",
+	[USB_SPEED_FULL] = "full-speed",
+	[USB_SPEED_HIGH] = "high-speed",
+	[USB_SPEED_WIRELESS] = "wireless",
+	[USB_SPEED_SUPER] = "super-speed",
+};
+
+enum usb_device_speed usb_get_maximum_speed(int node)
+{
+	const void *fdt = gd->fdt_blob;
+	const char *max_speed;
+	int i;
+
+	max_speed = fdt_getprop(fdt, node, "maximum-speed", NULL);
+	if (!max_speed) {
+		error("usb dr_mode not found\n");
+		return USB_DR_MODE_UNKNOWN;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(speed_names); i++)
+		if (!strcmp(max_speed, speed_names[i]))
+			return i;
+
+	return USB_SPEED_UNKNOWN;
+}
diff --git a/include/linux/usb/otg.h b/include/linux/usb/otg.h
index 8f8ac6aeefe3..b61ef19b22f3 100644
--- a/include/linux/usb/otg.h
+++ b/include/linux/usb/otg.h
@@ -26,4 +26,13 @@ enum usb_dr_mode {
  */
 enum usb_dr_mode usb_get_dr_mode(int node);
 
+/**
+ * usb_get_maximum_speed() - Get maximum speed for given device
+ * @node: Node offset to the given device
+ *
+ * The function gets phy interface string from property 'maximum-speed',
+ * and returns the correspondig enum usb_device_speed
+ */
+enum usb_device_speed usb_get_maximum_speed(int node);
+
 #endif /* __LINUX_USB_OTG_H */
diff --git a/scripts/Makefile.spl b/scripts/Makefile.spl
index 135706f21de1..bba84c92f0f0 100644
--- a/scripts/Makefile.spl
+++ b/scripts/Makefile.spl
@@ -78,6 +78,7 @@ endif
 
 libs-$(CONFIG_SPL_LIBDISK_SUPPORT) += disk/
 libs-y += drivers/
+libs-y += drivers/usb/common/
 libs-$(CONFIG_SPL_USB_GADGET_SUPPORT) += drivers/usb/dwc3/
 libs-y += dts/
 libs-y += fs/
-- 
2.13.0

  parent reply	other threads:[~2017-05-23 11:55 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-23 11:55 [U-Boot] [PATCH 00/11] driver model bring-up of dwc3 usb peripheral Vignesh R
2017-05-23 11:55 ` [U-Boot] [PATCH 01/11] drivers: usb: dwc3: remove devm_zalloc from linux_compact Vignesh R
2017-05-31  3:50   ` Simon Glass
2017-05-23 11:55 ` [U-Boot] [PATCH 02/11] drivers: usb: dwc3-omap: move usb_gadget_handle_interrupts from board files to drivers Vignesh R
2017-05-31  3:50   ` Simon Glass
2017-05-23 11:55 ` [U-Boot] [PATCH 03/11] am437x: board: do not register usb devices when CONFIG_DM_USB is defined Vignesh R
2017-05-31  3:50   ` Simon Glass
2017-05-23 11:55 ` [U-Boot] [PATCH 04/11] omap5/am57xx/dra7xx: " Vignesh R
2017-05-31  3:50   ` Simon Glass
2017-05-23 11:55 ` [U-Boot] [PATCH 05/11] drivers: usb: dwc3: add ti dwc3 misc driver for wrapper Vignesh R
2017-05-31  3:50   ` Simon Glass
2017-05-31  5:06     ` Vignesh R
2017-05-31  5:06     ` Vignesh R
2017-05-23 11:55 ` Vignesh R [this message]
2017-05-31  3:50   ` [U-Boot] [PATCH 06/11] drivers: usb: common: add support to get maximum speed from dt Simon Glass
2017-05-23 11:55 ` [U-Boot] [PATCH 07/11] drivers: usb: dwc3: add ti dwc3 peripheral driver with driver model support Vignesh R
2017-05-23 11:55 ` [U-Boot] [PATCH 08/11] dwc3: Add support for USB device boot Vignesh R
2017-05-31  3:50   ` Simon Glass
2017-05-31  6:03     ` Vignesh R
2017-05-23 11:55 ` [U-Boot] [PATCH 09/11] am43xx: Add USB device boot support Vignesh R
2017-05-23 11:55 ` [U-Boot] [PATCH 10/11] configs: am43xx: Enable configs to support USB device boot Vignesh R
2017-05-23 11:55 ` [U-Boot] [PATCH 11/11] ARM: am437x-gp-evm-u-boot.dtsi: Enable nodes for " Vignesh R
2017-05-24  4:25   ` Lokesh Vutla

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