summaryrefslogtreecommitdiffstats
path: root/drivers/usb/renesas_usbhs/fifo.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/usb/renesas_usbhs/fifo.h
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/renesas_usbhs/fifo.h')
-rw-r--r--drivers/usb/renesas_usbhs/fifo.h102
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/usb/renesas_usbhs/fifo.h b/drivers/usb/renesas_usbhs/fifo.h
new file mode 100644
index 000000000..039a2b993
--- /dev/null
+++ b/drivers/usb/renesas_usbhs/fifo.h
@@ -0,0 +1,102 @@
+/* SPDX-License-Identifier: GPL-1.0+ */
+/*
+ * Renesas USB driver
+ *
+ * Copyright (C) 2011 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ */
+#ifndef RENESAS_USB_FIFO_H
+#define RENESAS_USB_FIFO_H
+
+#include <linux/interrupt.h>
+#include <linux/sh_dma.h>
+#include <linux/workqueue.h>
+#include <asm/dma.h>
+#include "pipe.h"
+
+struct usbhs_fifo {
+ char *name;
+ u32 port; /* xFIFO */
+ u32 sel; /* xFIFOSEL */
+ u32 ctr; /* xFIFOCTR */
+
+ struct usbhs_pipe *pipe;
+
+ struct dma_chan *tx_chan;
+ struct dma_chan *rx_chan;
+
+ struct sh_dmae_slave tx_slave;
+ struct sh_dmae_slave rx_slave;
+};
+
+#define USBHS_MAX_NUM_DFIFO 4
+struct usbhs_fifo_info {
+ struct usbhs_fifo cfifo;
+ struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO];
+};
+#define usbhsf_get_dnfifo(p, n) (&((p)->fifo_info.dfifo[n]))
+#define usbhs_for_each_dfifo(priv, dfifo, i) \
+ for ((i) = 0; \
+ ((i) < USBHS_MAX_NUM_DFIFO) && \
+ ((dfifo) = usbhsf_get_dnfifo(priv, (i))); \
+ (i)++)
+
+struct usbhs_pkt_handle;
+struct usbhs_pkt {
+ struct list_head node;
+ struct usbhs_pipe *pipe;
+ const struct usbhs_pkt_handle *handler;
+ void (*done)(struct usbhs_priv *priv,
+ struct usbhs_pkt *pkt);
+ struct work_struct work;
+ dma_addr_t dma;
+ const struct dmaengine_result *dma_result;
+ void *buf;
+ int length;
+ int trans;
+ int actual;
+ int zero;
+ int sequence;
+};
+
+struct usbhs_pkt_handle {
+ int (*prepare)(struct usbhs_pkt *pkt, int *is_done);
+ int (*try_run)(struct usbhs_pkt *pkt, int *is_done);
+ int (*dma_done)(struct usbhs_pkt *pkt, int *is_done);
+};
+
+/*
+ * fifo
+ */
+int usbhs_fifo_probe(struct usbhs_priv *priv);
+void usbhs_fifo_remove(struct usbhs_priv *priv);
+void usbhs_fifo_init(struct usbhs_priv *priv);
+void usbhs_fifo_quit(struct usbhs_priv *priv);
+void usbhs_fifo_clear_dcp(struct usbhs_pipe *pipe);
+
+/*
+ * packet info
+ */
+extern const struct usbhs_pkt_handle usbhs_fifo_pio_push_handler;
+extern const struct usbhs_pkt_handle usbhs_fifo_pio_pop_handler;
+extern const struct usbhs_pkt_handle usbhs_ctrl_stage_end_handler;
+
+extern const struct usbhs_pkt_handle usbhs_fifo_dma_push_handler;
+extern const struct usbhs_pkt_handle usbhs_fifo_dma_pop_handler;
+
+extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_in_handler;
+extern const struct usbhs_pkt_handle usbhs_dcp_status_stage_out_handler;
+
+extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_in_handler;
+extern const struct usbhs_pkt_handle usbhs_dcp_data_stage_out_handler;
+
+void usbhs_pkt_init(struct usbhs_pkt *pkt);
+void usbhs_pkt_push(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt,
+ void (*done)(struct usbhs_priv *priv,
+ struct usbhs_pkt *pkt),
+ void *buf, int len, int zero, int sequence);
+struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt);
+void usbhs_pkt_start(struct usbhs_pipe *pipe);
+struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe);
+
+#endif /* RENESAS_USB_FIFO_H */