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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2011-06-06 14:18:28 +0900
committerGreg Kroah-Hartman <gregkh@suse.de>2011-06-07 09:10:08 -0700
commitdad67397f2090b29cd1f169e6a4ac6f3532c6858 (patch)
tree02f3fe42ef7307b5c70a901b59598478897baa1b /drivers/usb/renesas_usbhs/fifo.c
parent659d495404d20ff8f96644fca82c772455f1226c (diff)
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usb: renesas_usbhs: modify data transfer interrupt
On current driver, overall data transfer method was implemented in fifo.c, but its interrupt which is member of packet queue control was still in mod_gadget.c. This patch move it into fifo.c. By this patch, the packet/fifo control is independent from mod_gadget. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/renesas_usbhs/fifo.c')
-rw-r--r--drivers/usb/renesas_usbhs/fifo.c168
1 files changed, 154 insertions, 14 deletions
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index b5031e3a1569..e9c4d3d8ef6e 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -22,19 +22,44 @@
/*
* packet info function
*/
+static int usbhsf_null_handle(struct usbhs_pkt *pkt)
+{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pkt->pipe);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ dev_err(dev, "null handler\n");
+
+ return -EINVAL;
+}
+
+static struct usbhs_pkt_handle usbhsf_null_handler = {
+ .prepare = usbhsf_null_handle,
+ .try_run = usbhsf_null_handle,
+};
+
void usbhs_pkt_init(struct usbhs_pkt *pkt)
{
INIT_LIST_HEAD(&pkt->node);
}
void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
+ struct usbhs_pkt_handle *handler,
void *buf, int len, int zero)
{
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct device *dev = usbhs_priv_to_dev(priv);
+
+ if (!handler) {
+ dev_err(dev, "no handler function\n");
+ handler = &usbhsf_null_handler;
+ }
+
list_del_init(&pkt->node);
list_add_tail(&pkt->node, &pipe->list);
pkt->pipe = pipe;
pkt->buf = buf;
+ pkt->handler = handler;
pkt->length = len;
pkt->zero = zero;
pkt->actual = 0;
@@ -163,12 +188,7 @@ static int usbhsf_fifo_select(struct usbhs_pipe *pipe, int write)
/*
* PIO fifo functions
*/
-int usbhs_fifo_prepare_write(struct usbhs_pipe *pipe)
-{
- return usbhsf_fifo_select(pipe, 1);
-}
-
-int usbhs_fifo_write(struct usbhs_pkt *pkt)
+static int usbhsf_try_push(struct usbhs_pkt *pkt)
{
struct usbhs_pipe *pipe = pkt->pipe;
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
@@ -181,11 +201,11 @@ int usbhs_fifo_write(struct usbhs_pkt *pkt)
int i, ret, len;
int is_short, is_done;
- ret = usbhs_pipe_is_accessible(pipe);
+ ret = usbhsf_fifo_select(pipe, 1);
if (ret < 0)
goto usbhs_fifo_write_busy;
- ret = usbhsf_fifo_select(pipe, 1);
+ ret = usbhs_pipe_is_accessible(pipe);
if (ret < 0)
goto usbhs_fifo_write_busy;
@@ -246,8 +266,7 @@ int usbhs_fifo_write(struct usbhs_pkt *pkt)
if (usbhs_pipe_is_dcp(pipe))
usbhs_dcp_control_transfer_done(pipe);
- if (info->tx_done)
- info->tx_done(pkt);
+ info->done(pkt);
}
return 0;
@@ -262,8 +281,14 @@ usbhs_fifo_write_busy:
return ret;
}
-int usbhs_fifo_prepare_read(struct usbhs_pipe *pipe)
+struct usbhs_pkt_handle usbhs_fifo_push_handler = {
+ .prepare = usbhsf_try_push,
+ .try_run = usbhsf_try_push,
+};
+
+static int usbhsf_prepare_pop(struct usbhs_pkt *pkt)
{
+ struct usbhs_pipe *pipe = pkt->pipe;
int ret;
/*
@@ -279,7 +304,7 @@ int usbhs_fifo_prepare_read(struct usbhs_pipe *pipe)
return ret;
}
-int usbhs_fifo_read(struct usbhs_pkt *pkt)
+static int usbhsf_try_pop(struct usbhs_pkt *pkt)
{
struct usbhs_pipe *pipe = pkt->pipe;
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
@@ -355,9 +380,124 @@ usbhs_fifo_read_end:
usbhsf_rx_irq_ctrl(pipe, 0);
usbhs_pipe_disable(pipe);
- if (info->rx_done)
- info->rx_done(pkt);
+ info->done(pkt);
}
return 0;
}
+
+struct usbhs_pkt_handle usbhs_fifo_pop_handler = {
+ .prepare = usbhsf_prepare_pop,
+ .try_run = usbhsf_try_pop,
+};
+
+/*
+ * handler function
+ */
+static int usbhsf_ctrl_stage_end(struct usbhs_pkt *pkt)
+{
+ struct usbhs_pipe *pipe = pkt->pipe;
+ struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
+ struct usbhs_pipe_info *info = usbhs_priv_to_pipeinfo(priv);
+
+ usbhs_dcp_control_transfer_done(pipe);
+
+ info->done(pkt);
+
+ return 0;
+}
+
+struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler = {
+ .prepare = usbhsf_ctrl_stage_end,
+ .try_run = usbhsf_ctrl_stage_end,
+};
+
+/*
+ * irq functions
+ */
+static int usbhsf_irq_empty(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhs_pipe *pipe;
+ struct usbhs_pkt *pkt;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int i, ret;
+
+ if (!irq_state->bempsts) {
+ dev_err(dev, "debug %s !!\n", __func__);
+ return -EIO;
+ }
+
+ dev_dbg(dev, "irq empty [0x%04x]\n", irq_state->bempsts);
+
+ /*
+ * search interrupted "pipe"
+ * not "uep".
+ */
+ usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
+ if (!(irq_state->bempsts & (1 << i)))
+ continue;
+
+ pkt = usbhs_pkt_get(pipe);
+ ret = usbhs_pkt_run(pkt);
+ if (ret < 0)
+ dev_err(dev, "irq_empty run_error %d : %d\n", i, ret);
+ }
+
+ return 0;
+}
+
+static int usbhsf_irq_ready(struct usbhs_priv *priv,
+ struct usbhs_irq_state *irq_state)
+{
+ struct usbhs_pipe *pipe;
+ struct usbhs_pkt *pkt;
+ struct device *dev = usbhs_priv_to_dev(priv);
+ int i, ret;
+
+ if (!irq_state->brdysts) {
+ dev_err(dev, "debug %s !!\n", __func__);
+ return -EIO;
+ }
+
+ dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts);
+
+ /*
+ * search interrupted "pipe"
+ * not "uep".
+ */
+ usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
+ if (!(irq_state->brdysts & (1 << i)))
+ continue;
+
+ pkt = usbhs_pkt_get(pipe);
+ ret = usbhs_pkt_run(pkt);
+ if (ret < 0)
+ dev_err(dev, "irq_ready run_error %d : %d\n", i, ret);
+ }
+
+ return 0;
+}
+
+/*
+ * fifo init
+ */
+void usbhs_fifo_init(struct usbhs_priv *priv)
+{
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+
+ mod->irq_empty = usbhsf_irq_empty;
+ mod->irq_ready = usbhsf_irq_ready;
+ mod->irq_bempsts = 0;
+ mod->irq_brdysts = 0;
+}
+
+void usbhs_fifo_quit(struct usbhs_priv *priv)
+{
+ struct usbhs_mod *mod = usbhs_mod_get_current(priv);
+
+ mod->irq_empty = NULL;
+ mod->irq_ready = NULL;
+ mod->irq_bempsts = 0;
+ mod->irq_brdysts = 0;
+}