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path: root/drivers/usb/musb/musb_cppi41.c
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Diffstat (limited to 'drivers/usb/musb/musb_cppi41.c')
-rw-r--r--drivers/usb/musb/musb_cppi41.c58
1 files changed, 31 insertions, 27 deletions
diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c
index d4d7c56b48c7..00e272bfee39 100644
--- a/drivers/usb/musb/musb_cppi41.c
+++ b/drivers/usb/musb/musb_cppi41.c
@@ -30,7 +30,6 @@ struct cppi41_dma_controller {
struct dma_controller controller;
struct cppi41_dma_channel rx_channel[MUSB_DMA_NUM_CHANNELS];
struct cppi41_dma_channel tx_channel[MUSB_DMA_NUM_CHANNELS];
- struct musb *musb;
struct hrtimer early_tx;
struct list_head early_tx_list;
u32 rx_mode;
@@ -45,7 +44,7 @@ static void save_rx_toggle(struct cppi41_dma_channel *cppi41_channel)
if (cppi41_channel->is_tx)
return;
- if (!is_host_active(cppi41_channel->controller->musb))
+ if (!is_host_active(cppi41_channel->controller->controller.musb))
return;
csr = musb_readw(cppi41_channel->hw_ep->regs, MUSB_RXCSR);
@@ -78,8 +77,7 @@ static void update_rx_toggle(struct cppi41_dma_channel *cppi41_channel)
if (!toggle && toggle == cppi41_channel->usb_toggle) {
csr |= MUSB_RXCSR_H_DATATOGGLE | MUSB_RXCSR_H_WR_DATATOGGLE;
musb_writew(cppi41_channel->hw_ep->regs, MUSB_RXCSR, csr);
- musb_dbg(cppi41_channel->controller->musb,
- "Restoring DATA1 toggle.");
+ musb_dbg(musb, "Restoring DATA1 toggle.");
}
cppi41_channel->usb_toggle = toggle;
@@ -99,7 +97,8 @@ static bool musb_is_tx_fifo_empty(struct musb_hw_ep *hw_ep)
return true;
}
-static void cppi41_dma_callback(void *private_data);
+static void cppi41_dma_callback(void *private_data,
+ const struct dmaengine_result *result);
static void cppi41_trans_done(struct cppi41_dma_channel *cppi41_channel)
{
@@ -154,7 +153,7 @@ static void cppi41_trans_done(struct cppi41_dma_channel *cppi41_channel)
if (WARN_ON(!dma_desc))
return;
- dma_desc->callback = cppi41_dma_callback;
+ dma_desc->callback_result = cppi41_dma_callback;
dma_desc->callback_param = &cppi41_channel->channel;
cppi41_channel->cookie = dma_desc->tx_submit(dma_desc);
trace_musb_cppi41_cont(cppi41_channel);
@@ -179,7 +178,7 @@ static enum hrtimer_restart cppi41_recheck_tx_req(struct hrtimer *timer)
controller = container_of(timer, struct cppi41_dma_controller,
early_tx);
- musb = controller->musb;
+ musb = controller->controller.musb;
spin_lock_irqsave(&musb->lock, flags);
list_for_each_entry_safe(cppi41_channel, n, &controller->early_tx_list,
@@ -197,15 +196,15 @@ static enum hrtimer_restart cppi41_recheck_tx_req(struct hrtimer *timer)
if (!list_empty(&controller->early_tx_list) &&
!hrtimer_is_queued(&controller->early_tx)) {
ret = HRTIMER_RESTART;
- hrtimer_forward_now(&controller->early_tx,
- ktime_set(0, 20 * NSEC_PER_USEC));
+ hrtimer_forward_now(&controller->early_tx, 20 * NSEC_PER_USEC);
}
spin_unlock_irqrestore(&musb->lock, flags);
return ret;
}
-static void cppi41_dma_callback(void *private_data)
+static void cppi41_dma_callback(void *private_data,
+ const struct dmaengine_result *result)
{
struct dma_channel *channel = private_data;
struct cppi41_dma_channel *cppi41_channel = channel->private_data;
@@ -218,6 +217,13 @@ static void cppi41_dma_callback(void *private_data)
int is_hs = 0;
bool empty;
+ controller = cppi41_channel->controller;
+ if (controller->controller.dma_callback)
+ controller->controller.dma_callback(&controller->controller);
+
+ if (result->result == DMA_TRANS_ABORTED)
+ return;
+
spin_lock_irqsave(&musb->lock, flags);
dmaengine_tx_status(cppi41_channel->dc, cppi41_channel->cookie,
@@ -250,8 +256,6 @@ static void cppi41_dma_callback(void *private_data)
* We spin on HS (no longer than than 25us and setup a timer on
* FS to check for the bit and complete the transfer.
*/
- controller = cppi41_channel->controller;
-
if (is_host_active(musb)) {
if (musb->port1_status & USB_PORT_STAT_HIGH_SPEED)
is_hs = 1;
@@ -280,9 +284,9 @@ static void cppi41_dma_callback(void *private_data)
unsigned long usecs = cppi41_channel->total_len / 10;
hrtimer_start_range_ns(&controller->early_tx,
- ktime_set(0, usecs * NSEC_PER_USEC),
- 20 * NSEC_PER_USEC,
- HRTIMER_MODE_REL);
+ usecs * NSEC_PER_USEC,
+ 20 * NSEC_PER_USEC,
+ HRTIMER_MODE_REL);
}
out:
@@ -303,6 +307,7 @@ static void cppi41_set_dma_mode(struct cppi41_dma_channel *cppi41_channel,
unsigned mode)
{
struct cppi41_dma_controller *controller = cppi41_channel->controller;
+ struct musb *musb = controller->controller.musb;
u32 port;
u32 new_mode;
u32 old_mode;
@@ -318,12 +323,10 @@ static void cppi41_set_dma_mode(struct cppi41_dma_channel *cppi41_channel,
return;
if (cppi41_channel->is_tx) {
controller->tx_mode = new_mode;
- musb_writel(controller->musb->ctrl_base, USB_CTRL_TX_MODE,
- new_mode);
+ musb_writel(musb->ctrl_base, USB_CTRL_TX_MODE, new_mode);
} else {
controller->rx_mode = new_mode;
- musb_writel(controller->musb->ctrl_base, USB_CTRL_RX_MODE,
- new_mode);
+ musb_writel(musb->ctrl_base, USB_CTRL_RX_MODE, new_mode);
}
}
@@ -342,7 +345,8 @@ static void cppi41_set_autoreq_mode(struct cppi41_dma_channel *cppi41_channel,
if (new_mode == old_mode)
return;
controller->auto_req = new_mode;
- musb_writel(controller->musb->ctrl_base, USB_CTRL_AUTOREQ, new_mode);
+ musb_writel(controller->controller.musb->ctrl_base, USB_CTRL_AUTOREQ,
+ new_mode);
}
static bool cppi41_configure_channel(struct dma_channel *channel,
@@ -353,7 +357,7 @@ static bool cppi41_configure_channel(struct dma_channel *channel,
struct dma_chan *dc = cppi41_channel->dc;
struct dma_async_tx_descriptor *dma_desc;
enum dma_transfer_direction direction;
- struct musb *musb = cppi41_channel->controller->musb;
+ struct musb *musb = cppi41_channel->controller->controller.musb;
unsigned use_gen_rndis = 0;
cppi41_channel->buf_addr = dma_addr;
@@ -402,7 +406,7 @@ static bool cppi41_configure_channel(struct dma_channel *channel,
if (!dma_desc)
return false;
- dma_desc->callback = cppi41_dma_callback;
+ dma_desc->callback_result = cppi41_dma_callback;
dma_desc->callback_param = channel;
cppi41_channel->cookie = dma_desc->tx_submit(dma_desc);
cppi41_channel->channel.rx_packet_done = false;
@@ -466,7 +470,7 @@ static int cppi41_dma_channel_program(struct dma_channel *channel,
BUG_ON(channel->status == MUSB_DMA_STATUS_UNKNOWN ||
channel->status == MUSB_DMA_STATUS_BUSY);
- if (is_host_active(cppi41_channel->controller->musb)) {
+ if (is_host_active(cppi41_channel->controller->controller.musb)) {
if (cppi41_channel->is_tx)
hb_mult = cppi41_channel->hw_ep->out_qh->hb_mult;
else
@@ -491,7 +495,7 @@ static int cppi41_is_compatible(struct dma_channel *channel, u16 maxpacket,
{
struct cppi41_dma_channel *cppi41_channel = channel->private_data;
struct cppi41_dma_controller *controller = cppi41_channel->controller;
- struct musb *musb = controller->musb;
+ struct musb *musb = controller->controller.musb;
if (is_host_active(musb)) {
WARN_ON(1);
@@ -509,7 +513,7 @@ static int cppi41_dma_channel_abort(struct dma_channel *channel)
{
struct cppi41_dma_channel *cppi41_channel = channel->private_data;
struct cppi41_dma_controller *controller = cppi41_channel->controller;
- struct musb *musb = controller->musb;
+ struct musb *musb = controller->controller.musb;
void __iomem *epio = cppi41_channel->hw_ep->regs;
int tdbit;
int ret;
@@ -594,7 +598,7 @@ static void cppi41_dma_controller_stop(struct cppi41_dma_controller *controller)
static int cppi41_dma_controller_start(struct cppi41_dma_controller *controller)
{
- struct musb *musb = controller->musb;
+ struct musb *musb = controller->controller.musb;
struct device *dev = musb->controller;
struct device_node *np = dev->parent->of_node;
struct cppi41_dma_channel *cppi41_channel;
@@ -689,13 +693,13 @@ cppi41_dma_controller_create(struct musb *musb, void __iomem *base)
hrtimer_init(&controller->early_tx, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
controller->early_tx.function = cppi41_recheck_tx_req;
INIT_LIST_HEAD(&controller->early_tx_list);
- controller->musb = musb;
controller->controller.channel_alloc = cppi41_dma_channel_allocate;
controller->controller.channel_release = cppi41_dma_channel_release;
controller->controller.channel_program = cppi41_dma_channel_program;
controller->controller.channel_abort = cppi41_dma_channel_abort;
controller->controller.is_compatible = cppi41_is_compatible;
+ controller->controller.musb = musb;
ret = cppi41_dma_controller_start(controller);
if (ret)
generated by cgit v1.2.3 (git 2.46.0) at 2025-09-08 19:33:17 +0000