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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /sound/soc/blackfin/bf5xx-sport.h
Initial import
Diffstat (limited to 'sound/soc/blackfin/bf5xx-sport.h')
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diff --git a/sound/soc/blackfin/bf5xx-sport.h b/sound/soc/blackfin/bf5xx-sport.h
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+/*
+ * File: bf5xx_sport.h
+ * Based on:
+ * Author: Roy Huang <roy.huang@analog.com>
+ *
+ * Created:
+ * Description:
+ *
+ * Copyright 2004-2007 Analog Devices Inc.
+ *
+ * Bugs: Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#ifndef __BF5XX_SPORT_H__
+#define __BF5XX_SPORT_H__
+
+#include <linux/types.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+#include <linux/platform_device.h>
+#include <asm/dma.h>
+#include <asm/bfin_sport.h>
+
+#define DESC_ELEMENT_COUNT 9
+
+struct sport_device {
+ int num;
+ int dma_rx_chan;
+ int dma_tx_chan;
+ int err_irq;
+ const unsigned short *pin_req;
+ struct sport_register *regs;
+
+ unsigned char *rx_buf;
+ unsigned char *tx_buf;
+ unsigned int rx_fragsize;
+ unsigned int tx_fragsize;
+ unsigned int rx_frags;
+ unsigned int tx_frags;
+ unsigned int wdsize;
+
+ /* for dummy dma transfer */
+ void *dummy_buf;
+ unsigned int dummy_count;
+
+ /* DMA descriptor ring head of current audio stream*/
+ struct dmasg *dma_rx_desc;
+ struct dmasg *dma_tx_desc;
+ unsigned int rx_desc_bytes;
+ unsigned int tx_desc_bytes;
+
+ unsigned int rx_run:1; /* rx is running */
+ unsigned int tx_run:1; /* tx is running */
+
+ struct dmasg *dummy_rx_desc;
+ struct dmasg *dummy_tx_desc;
+
+ struct dmasg *curr_rx_desc;
+ struct dmasg *curr_tx_desc;
+
+ int rx_curr_frag;
+ int tx_curr_frag;
+
+ unsigned int rcr1;
+ unsigned int rcr2;
+ int rx_tdm_count;
+
+ unsigned int tcr1;
+ unsigned int tcr2;
+ int tx_tdm_count;
+
+ void (*rx_callback)(void *data);
+ void *rx_data;
+ void (*tx_callback)(void *data);
+ void *tx_data;
+ void (*err_callback)(void *data);
+ void *err_data;
+ unsigned char *tx_dma_buf;
+ unsigned char *rx_dma_buf;
+#ifdef CONFIG_SND_BF5XX_MMAP_SUPPORT
+ dma_addr_t tx_dma_phy;
+ dma_addr_t rx_dma_phy;
+ int tx_pos;/*pcm sample count*/
+ int rx_pos;
+ unsigned int tx_buffer_size;
+ unsigned int rx_buffer_size;
+ int tx_delay_pos;
+ int once;
+#endif
+ void *private_data;
+};
+
+struct sport_param {
+ int num;
+ int dma_rx_chan;
+ int dma_tx_chan;
+ int err_irq;
+ const unsigned short *pin_req;
+ struct sport_register *regs;
+ unsigned int wdsize;
+ unsigned int dummy_count;
+ void *private_data;
+};
+
+struct sport_device *sport_init(struct platform_device *pdev,
+ unsigned int wdsize, unsigned int dummy_count, size_t priv_size);
+
+void sport_done(struct sport_device *sport);
+
+/* first use these ...*/
+
+/* note: multichannel is in units of 8 channels, tdm_count is number of channels
+ * NOT / 8 ! all channels are enabled by default */
+int sport_set_multichannel(struct sport_device *sport, int tdm_count,
+ u32 tx_mask, u32 rx_mask, int packed);
+
+int sport_config_rx(struct sport_device *sport,
+ unsigned int rcr1, unsigned int rcr2,
+ unsigned int clkdiv, unsigned int fsdiv);
+
+int sport_config_tx(struct sport_device *sport,
+ unsigned int tcr1, unsigned int tcr2,
+ unsigned int clkdiv, unsigned int fsdiv);
+
+/* ... then these: */
+
+/* buffer size (in bytes) == fragcount * fragsize_bytes */
+
+/* this is not a very general api, it sets the dma to 2d autobuffer mode */
+
+int sport_config_rx_dma(struct sport_device *sport, void *buf,
+ int fragcount, size_t fragsize_bytes);
+
+int sport_config_tx_dma(struct sport_device *sport, void *buf,
+ int fragcount, size_t fragsize_bytes);
+
+int sport_tx_start(struct sport_device *sport);
+int sport_tx_stop(struct sport_device *sport);
+int sport_rx_start(struct sport_device *sport);
+int sport_rx_stop(struct sport_device *sport);
+
+/* for use in interrupt handler */
+unsigned long sport_curr_offset_rx(struct sport_device *sport);
+unsigned long sport_curr_offset_tx(struct sport_device *sport);
+
+void sport_incfrag(struct sport_device *sport, int *frag, int tx);
+void sport_decfrag(struct sport_device *sport, int *frag, int tx);
+
+int sport_set_rx_callback(struct sport_device *sport,
+ void (*rx_callback)(void *), void *rx_data);
+int sport_set_tx_callback(struct sport_device *sport,
+ void (*tx_callback)(void *), void *tx_data);
+int sport_set_err_callback(struct sport_device *sport,
+ void (*err_callback)(void *), void *err_data);
+
+int sport_send_and_recv(struct sport_device *sport, u8 *out_data, \
+ u8 *in_data, int len);
+#endif /* BF53X_SPORT_H */