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-rw-r--r--meta/packages/linux/linux-omap-2.6.29/musb/0027-musb-otg-timer-cleanup.patch198
1 files changed, 0 insertions, 198 deletions
diff --git a/meta/packages/linux/linux-omap-2.6.29/musb/0027-musb-otg-timer-cleanup.patch b/meta/packages/linux/linux-omap-2.6.29/musb/0027-musb-otg-timer-cleanup.patch
deleted file mode 100644
index f41b766cfe..0000000000
--- a/meta/packages/linux/linux-omap-2.6.29/musb/0027-musb-otg-timer-cleanup.patch
+++ /dev/null
@@ -1,198 +0,0 @@
-From b4b8c1e7604784b9877f07400ff2a718118ef05c Mon Sep 17 00:00:00 2001
-From: David Brownell <dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
-Date: Tue, 31 Mar 2009 12:32:12 -0700
-Subject: [PATCH] musb: otg timer cleanup
-
-Minor cleanup of OTG timer handling:
- * unify decls for OTG time constants, in the core header
- * set up and use that timer in a more normal way
- * move to the driver struct, so it's usable outside core
-
-And tighten use and setup of T(a_wait_bcon) so that if it's used,
-it's always valid. (If that timer expires, the A-device will
-stop powering VBUS. For non-OTG systems, that will be a surprise.)
-No behavioral changes, other than more consistency when applying
-that core HNP timeout.
-
-Signed-off-by: David Brownell <dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
----
- drivers/usb/musb/musb_core.c | 41 ++++++++++++++++++++++-------------------
- drivers/usb/musb/musb_core.h | 14 +++++++++++---
- drivers/usb/musb/omap2430.c | 2 --
- 3 files changed, 33 insertions(+), 24 deletions(-)
-
-diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
-index ac150af..05c5dd3 100644
---- a/drivers/usb/musb/musb_core.c
-+++ b/drivers/usb/musb/musb_core.c
-@@ -112,6 +112,7 @@
- #include "davinci.h"
- #endif
-
-+#define TA_WAIT_BCON(m) max_t(int, (m)->a_wait_bcon, OTG_TIME_A_WAIT_BCON)
-
-
- unsigned musb_debug;
-@@ -288,12 +289,6 @@ const char *otg_state_string(struct musb *musb)
- #ifdef CONFIG_USB_MUSB_OTG
-
- /*
-- * See also USB_OTG_1-3.pdf 6.6.5 Timers
-- * REVISIT: Are the other timers done in the hardware?
-- */
--#define TB_ASE0_BRST 100 /* Min 3.125 ms */
--
--/*
- * Handles OTG hnp timeouts, such as b_ase0_brst
- */
- void musb_otg_timer_func(unsigned long data)
-@@ -320,10 +315,8 @@ void musb_otg_timer_func(unsigned long data)
- spin_unlock_irqrestore(&musb->lock, flags);
- }
-
--static DEFINE_TIMER(musb_otg_timer, musb_otg_timer_func, 0, 0);
--
- /*
-- * Stops the B-device HNP state. Caller must take care of locking.
-+ * Stops the HNP transition. Caller must take care of locking.
- */
- void musb_hnp_stop(struct musb *musb)
- {
-@@ -661,11 +654,12 @@ static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
- musb_g_reset(musb);
- /* FALLTHROUGH */
- case OTG_STATE_A_WAIT_BCON: /* OPT TD.4.7-900ms */
-- DBG(1, "HNP: Setting timer as %s\n",
-- otg_state_string(musb));
-- musb_otg_timer.data = (unsigned long)musb;
-- mod_timer(&musb_otg_timer, jiffies
-- + msecs_to_jiffies(100));
-+ /* never use invalid T(a_wait_bcon) */
-+ DBG(1, "HNP: in %s, %d msec timeout\n",
-+ otg_state_string(musb),
-+ TA_WAIT_BCON(musb));
-+ mod_timer(&musb->otg_timer, jiffies
-+ + msecs_to_jiffies(TA_WAIT_BCON(musb)));
- break;
- case OTG_STATE_A_PERIPHERAL:
- musb_hnp_stop(musb);
-@@ -822,9 +816,9 @@ static irqreturn_t musb_stage2_irq(struct musb *musb, u8 int_usb,
- #ifdef CONFIG_USB_MUSB_OTG
- musb->xceiv->state = OTG_STATE_B_WAIT_ACON;
- DBG(1, "HNP: Setting timer for b_ase0_brst\n");
-- musb_otg_timer.data = (unsigned long)musb;
-- mod_timer(&musb_otg_timer, jiffies
-- + msecs_to_jiffies(TB_ASE0_BRST));
-+ mod_timer(&musb->otg_timer, jiffies
-+ + msecs_to_jiffies(
-+ OTG_TIME_B_ASE0_BRST));
- #endif
- }
- break;
-@@ -1680,7 +1674,8 @@ musb_vbus_store(struct device *dev, struct device_attribute *attr,
- }
-
- spin_lock_irqsave(&musb->lock, flags);
-- musb->a_wait_bcon = val;
-+ /* force T(a_wait_bcon) to be zero/unlimited *OR* valid */
-+ musb->a_wait_bcon = val ? max_t(int, val, OTG_TIME_A_WAIT_BCON) : 0 ;
- if (musb->xceiv->state == OTG_STATE_A_WAIT_BCON)
- musb->is_active = 0;
- musb_platform_try_idle(musb, jiffies + msecs_to_jiffies(val));
-@@ -1699,10 +1694,13 @@ musb_vbus_show(struct device *dev, struct device_attribute *attr, char *buf)
-
- spin_lock_irqsave(&musb->lock, flags);
- val = musb->a_wait_bcon;
-+ /* FIXME get_vbus_status() is normally #defined as false...
-+ * and is effectively TUSB-specific.
-+ */
- vbus = musb_platform_get_vbus_status(musb);
- spin_unlock_irqrestore(&musb->lock, flags);
-
-- return sprintf(buf, "Vbus %s, timeout %lu\n",
-+ return sprintf(buf, "Vbus %s, timeout %lu msec\n",
- vbus ? "on" : "off", val);
- }
- static DEVICE_ATTR(vbus, 0644, musb_vbus_show, musb_vbus_store);
-@@ -1775,6 +1773,7 @@ allocate_instance(struct device *dev,
- hcd->uses_new_polling = 1;
-
- musb->vbuserr_retry = VBUSERR_RETRY_COUNT;
-+ musb->a_wait_bcon = OTG_TIME_A_WAIT_BCON;
- #else
- musb = kzalloc(sizeof *musb, GFP_KERNEL);
- if (!musb)
-@@ -1969,6 +1968,10 @@ bad_config:
- if (status < 0)
- goto fail2;
-
-+#ifdef CONFIG_USB_OTG
-+ setup_timer(&musb->otg_timer, musb_otg_timer_func, (unsigned long) musb);
-+#endif
-+
- /* Init IRQ workqueue before request_irq */
- INIT_WORK(&musb->irq_work, musb_irq_work);
-
-diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
-index c3ee348..cf3ccb0 100644
---- a/drivers/usb/musb/musb_core.h
-+++ b/drivers/usb/musb/musb_core.h
-@@ -40,6 +40,7 @@
- #include <linux/interrupt.h>
- #include <linux/smp_lock.h>
- #include <linux/errno.h>
-+#include <linux/timer.h>
- #include <linux/clk.h>
- #include <linux/device.h>
- #include <linux/usb/ch9.h>
-@@ -180,10 +181,15 @@ enum musb_g_ep0_state {
- MUSB_EP0_STAGE_ACKWAIT, /* after zlp, before statusin */
- } __attribute__ ((packed));
-
--/* OTG protocol constants */
-+/*
-+ * OTG protocol constants. See USB OTG 1.3 spec,
-+ * sections 5.5 "Device Timings" and 6.6.5 "Timers".
-+ */
- #define OTG_TIME_A_WAIT_VRISE 100 /* msec (max) */
--#define OTG_TIME_A_WAIT_BCON 0 /* 0=infinite; min 1000 msec */
--#define OTG_TIME_A_IDLE_BDIS 200 /* msec (min) */
-+#define OTG_TIME_A_WAIT_BCON 1100 /* min 1 second */
-+#define OTG_TIME_A_AIDL_BDIS 200 /* min 200 msec */
-+#define OTG_TIME_B_ASE0_BRST 100 /* min 3.125 ms */
-+
-
- /*************************** REGISTER ACCESS ********************************/
-
-@@ -332,6 +338,8 @@ struct musb {
- struct list_head control; /* of musb_qh */
- struct list_head in_bulk; /* of musb_qh */
- struct list_head out_bulk; /* of musb_qh */
-+
-+ struct timer_list otg_timer;
- #endif
-
- /* called with IRQs blocked; ON/nonzero implies starting a session,
-diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
-index 5f67b03..3fbc807 100644
---- a/drivers/usb/musb/omap2430.c
-+++ b/drivers/usb/musb/omap2430.c
-@@ -45,7 +45,6 @@
- #define get_cpu_rev() 2
- #endif
-
--#define MUSB_TIMEOUT_A_WAIT_BCON 1100
-
- static struct timer_list musb_idle_timer;
-
-@@ -246,7 +245,6 @@ int __init musb_platform_init(struct musb *musb)
-
- if (is_host_enabled(musb))
- musb->board_set_vbus = omap_set_vbus;
-- musb->a_wait_bcon = MUSB_TIMEOUT_A_WAIT_BCON;
-
- setup_timer(&musb_idle_timer, musb_do_idle, (unsigned long) musb);
-
---
-1.6.0.4
-
generated by cgit v1.2.3 (git 2.25.1) at 2025-12-10 22:04:48 +0000