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authorRichard Purdie <rpurdie@linux.intel.com>2010-08-27 15:14:24 +0100
committerRichard Purdie <rpurdie@linux.intel.com>2010-08-27 15:29:45 +0100
commit29d6678fd546377459ef75cf54abeef5b969b5cf (patch)
tree8edd65790e37a00d01c3f203f773fe4b5012db18 /meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0023-musb-add-high-bandwidth-ISO-support.patch
parentda49de6885ee1bc424e70bc02f21f6ab920efb55 (diff)
downloadopenembedded-core-contrib-29d6678fd546377459ef75cf54abeef5b969b5cf.tar.gz
Major layout change to the packages directory
Having one monolithic packages directory makes it hard to find things and is generally overwhelming. This commit splits it into several logical sections roughly based on function, recipes.txt gives more information about the classifications used. The opportunity is also used to switch from "packages" to "recipes" as used in OpenEmbedded as the term "packages" can be confusing to people and has many different meanings. Not all recipes have been classified yet, this is just a first pass at separating things out. Some packages are moved to meta-extras as they're no longer actively used or maintained. Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0023-musb-add-high-bandwidth-ISO-support.patch')
-rw-r--r--meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0023-musb-add-high-bandwidth-ISO-support.patch187
1 files changed, 187 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0023-musb-add-high-bandwidth-ISO-support.patch b/meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0023-musb-add-high-bandwidth-ISO-support.patch
new file mode 100644
index 0000000000..3038dd171d
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0023-musb-add-high-bandwidth-ISO-support.patch
@@ -0,0 +1,187 @@
+From 2e049a88b729ae2fdc0ecdabad1857810bd62737 Mon Sep 17 00:00:00 2001
+From: Ajay Kumar Gupta <ajay.gupta-l0cyMroinI0@public.gmane.org>
+Date: Fri, 3 Apr 2009 16:16:17 -0700
+Subject: [PATCH] musb: add high bandwidth ISO support
+
+Tested on OMAP3 host side with Creative (Live! Cam Optia) USB camera
+which uses high bandwidth isochronous IN endpoints. FIFO mode 4 is
+updated to provide the needed 4K endpoint buffer without breaking
+the g_nokia composite gadget configuration. (This is the only
+gadget driver known to use enough endpoints to notice the change.)
+
+Signed-off-by: Ajay Kumar Gupta <ajay.gupta-l0cyMroinI0@public.gmane.org>
+Signed-off-by: David Brownell <dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
+---
+ drivers/usb/musb/musb_core.c | 19 ++++++++---------
+ drivers/usb/musb/musb_core.h | 3 ++
+ drivers/usb/musb/musb_host.c | 47 +++++++++++++++++++++++++++++++----------
+ drivers/usb/musb/musb_host.h | 1 +
+ 4 files changed, 48 insertions(+), 22 deletions(-)
+
+diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
+index a1de43b..d953305 100644
+--- a/drivers/usb/musb/musb_core.c
++++ b/drivers/usb/musb/musb_core.c
+@@ -1068,14 +1068,13 @@ static struct fifo_cfg __initdata mode_4_cfg[] = {
+ { .hw_ep_num = 8, .style = FIFO_RX, .maxpacket = 512, },
+ { .hw_ep_num = 9, .style = FIFO_TX, .maxpacket = 512, },
+ { .hw_ep_num = 9, .style = FIFO_RX, .maxpacket = 512, },
+-{ .hw_ep_num = 10, .style = FIFO_TX, .maxpacket = 512, },
+-{ .hw_ep_num = 10, .style = FIFO_RX, .maxpacket = 512, },
+-{ .hw_ep_num = 11, .style = FIFO_TX, .maxpacket = 512, },
+-{ .hw_ep_num = 11, .style = FIFO_RX, .maxpacket = 512, },
+-{ .hw_ep_num = 12, .style = FIFO_TX, .maxpacket = 512, },
+-{ .hw_ep_num = 12, .style = FIFO_RX, .maxpacket = 512, },
+-{ .hw_ep_num = 13, .style = FIFO_TX, .maxpacket = 512, },
+-{ .hw_ep_num = 13, .style = FIFO_RX, .maxpacket = 512, },
++{ .hw_ep_num = 10, .style = FIFO_TX, .maxpacket = 256, },
++{ .hw_ep_num = 10, .style = FIFO_RX, .maxpacket = 64, },
++{ .hw_ep_num = 11, .style = FIFO_TX, .maxpacket = 256, },
++{ .hw_ep_num = 11, .style = FIFO_RX, .maxpacket = 64, },
++{ .hw_ep_num = 12, .style = FIFO_TX, .maxpacket = 256, },
++{ .hw_ep_num = 12, .style = FIFO_RX, .maxpacket = 64, },
++{ .hw_ep_num = 13, .style = FIFO_RXTX, .maxpacket = 4096, },
+ { .hw_ep_num = 14, .style = FIFO_RXTX, .maxpacket = 1024, },
+ { .hw_ep_num = 15, .style = FIFO_RXTX, .maxpacket = 1024, },
+ };
+@@ -1335,11 +1334,11 @@ static int __init musb_core_init(u16 musb_type, struct musb *musb)
+ }
+ if (reg & MUSB_CONFIGDATA_HBRXE) {
+ strcat(aInfo, ", HB-ISO Rx");
+- strcat(aInfo, " (X)"); /* no driver support */
++ musb->hb_iso_rx = true;
+ }
+ if (reg & MUSB_CONFIGDATA_HBTXE) {
+ strcat(aInfo, ", HB-ISO Tx");
+- strcat(aInfo, " (X)"); /* no driver support */
++ musb->hb_iso_tx = true;
+ }
+ if (reg & MUSB_CONFIGDATA_SOFTCONE)
+ strcat(aInfo, ", SoftConn");
+diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
+index f56a56c..0ac4faf 100644
+--- a/drivers/usb/musb/musb_core.h
++++ b/drivers/usb/musb/musb_core.h
+@@ -387,6 +387,9 @@ struct musb {
+ unsigned is_multipoint:1;
+ unsigned ignore_disconnect:1; /* during bus resets */
+
++ unsigned hb_iso_rx:1; /* high bandwidth iso rx? */
++ unsigned hb_iso_tx:1; /* high bandwidth iso tx? */
++
+ #ifdef C_MP_TX
+ unsigned bulk_split:1;
+ #define can_bulk_split(musb,type) \
+diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
+index 71e835e..ece5122 100644
+--- a/drivers/usb/musb/musb_host.c
++++ b/drivers/usb/musb/musb_host.c
+@@ -602,7 +602,8 @@ musb_rx_reinit(struct musb *musb, struct musb_qh *qh, struct musb_hw_ep *ep)
+ musb_writeb(ep->regs, MUSB_RXTYPE, qh->type_reg);
+ musb_writeb(ep->regs, MUSB_RXINTERVAL, qh->intv_reg);
+ /* NOTE: bulk combining rewrites high bits of maxpacket */
+- musb_writew(ep->regs, MUSB_RXMAXP, qh->maxpacket);
++ musb_writew(ep->regs, MUSB_RXMAXP,
++ qh->maxpacket | ((qh->hb_mult - 1) << 11));
+
+ ep->rx_reinit = 0;
+ }
+@@ -624,9 +625,10 @@ static bool musb_tx_dma_program(struct dma_controller *dma,
+ csr = musb_readw(epio, MUSB_TXCSR);
+ if (length > pkt_size) {
+ mode = 1;
+- csr |= MUSB_TXCSR_AUTOSET
+- | MUSB_TXCSR_DMAMODE
+- | MUSB_TXCSR_DMAENAB;
++ csr |= MUSB_TXCSR_DMAMODE | MUSB_TXCSR_DMAENAB;
++ /* autoset shouldn't be set in high bandwidth */
++ if (qh->hb_mult == 1)
++ csr |= MUSB_TXCSR_AUTOSET;
+ } else {
+ mode = 0;
+ csr &= ~(MUSB_TXCSR_AUTOSET | MUSB_TXCSR_DMAMODE);
+@@ -1432,6 +1434,10 @@ void musb_host_rx(struct musb *musb, u8 epnum)
+ /* packet error reported later */
+ iso_err = true;
+ }
++ } else if (rx_csr & MUSB_RXCSR_INCOMPRX) {
++ DBG(3, "end %d high bandwidth incomplete ISO packet RX\n",
++ epnum);
++ status = -EPROTO;
+ }
+
+ /* faults abort the transfer */
+@@ -1639,7 +1645,11 @@ void musb_host_rx(struct musb *musb, u8 epnum)
+ val &= ~MUSB_RXCSR_H_AUTOREQ;
+ else
+ val |= MUSB_RXCSR_H_AUTOREQ;
+- val |= MUSB_RXCSR_AUTOCLEAR | MUSB_RXCSR_DMAENAB;
++ val |= MUSB_RXCSR_DMAENAB;
++
++ /* autoclear shouldn't be set in high bandwidth */
++ if (qh->hb_mult == 1)
++ val |= MUSB_RXCSR_AUTOCLEAR;
+
+ musb_writew(epio, MUSB_RXCSR,
+ MUSB_RXCSR_H_WZC_BITS | val);
+@@ -1725,9 +1735,10 @@ static int musb_schedule(
+ continue;
+
+ if (is_in)
+- diff = hw_ep->max_packet_sz_rx - qh->maxpacket;
++ diff = hw_ep->max_packet_sz_rx;
+ else
+- diff = hw_ep->max_packet_sz_tx - qh->maxpacket;
++ diff = hw_ep->max_packet_sz_tx;
++ diff -= (qh->maxpacket * qh->hb_mult);
+
+ if (diff >= 0 && best_diff > diff) {
+ best_diff = diff;
+@@ -1830,15 +1841,27 @@ static int musb_urb_enqueue(
+ qh->is_ready = 1;
+
+ qh->maxpacket = le16_to_cpu(epd->wMaxPacketSize);
++ qh->type = usb_endpoint_type(epd);
+
+- /* no high bandwidth support yet */
+- if (qh->maxpacket & ~0x7ff) {
+- ret = -EMSGSIZE;
+- goto done;
++ /* Bits 11 & 12 of wMaxPacketSize encode high bandwidth multiplier.
++ * Some musb cores don't support high bandwidth ISO transfers; and
++ * we don't (yet!) support high bandwidth interrupt transfers.
++ */
++ qh->hb_mult = 1 + ((qh->maxpacket >> 11) & 0x03);
++ if (qh->hb_mult > 1) {
++ int ok = (qh->type == USB_ENDPOINT_XFER_ISOC);
++
++ if (ok)
++ ok = (usb_pipein(urb->pipe) && musb->hb_iso_rx)
++ || (usb_pipeout(urb->pipe) && musb->hb_iso_tx);
++ if (!ok) {
++ ret = -EMSGSIZE;
++ goto done;
++ }
++ qh->maxpacket &= 0x7ff;
+ }
+
+ qh->epnum = usb_endpoint_num(epd);
+- qh->type = usb_endpoint_type(epd);
+
+ /* NOTE: urb->dev->devnum is wrong during SET_ADDRESS */
+ qh->addr_reg = (u8) usb_pipedevice(urb->pipe);
+diff --git a/drivers/usb/musb/musb_host.h b/drivers/usb/musb/musb_host.h
+index 0b7fbcd..14b0077 100644
+--- a/drivers/usb/musb/musb_host.h
++++ b/drivers/usb/musb/musb_host.h
+@@ -67,6 +67,7 @@ struct musb_qh {
+ u8 is_ready; /* safe to modify hw_ep */
+ u8 type; /* XFERTYPE_* */
+ u8 epnum;
++ u8 hb_mult; /* high bandwidth pkts per uf */
+ u16 maxpacket;
+ u16 frame; /* for periodic schedule */
+ unsigned iso_idx; /* in urb->iso_frame_desc[] */
+--
+1.6.0.4
+