SOUND: SAMSUNG: Add I2S driver
This patch adds driver for I2S interface specific to samsung. Signed-off-by: R. Chandrasekar <rcsekar@samsung.com> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Rajeshwari Shinde
Minkyu Kang
parent
d984b9f89c
commit
511ed5fdd3
1
Makefile
1
Makefile
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@ -313,6 +313,7 @@ LIBS-y += arch/powerpc/cpu/mpc8xxx/lib8xxx.o
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endif
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endif
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LIBS-y += drivers/rtc/librtc.o
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LIBS-y += drivers/rtc/librtc.o
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LIBS-y += drivers/serial/libserial.o
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LIBS-y += drivers/serial/libserial.o
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LIBS-y += drivers/sound/libsound.o
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LIBS-$(CONFIG_GENERIC_LPC_TPM) += drivers/tpm/libtpm.o
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LIBS-$(CONFIG_GENERIC_LPC_TPM) += drivers/tpm/libtpm.o
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LIBS-y += drivers/twserial/libtws.o
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LIBS-y += drivers/twserial/libtws.o
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LIBS-y += drivers/usb/eth/libusb_eth.o
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LIBS-y += drivers/usb/eth/libusb_eth.o
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@ -0,0 +1,47 @@
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#
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# Copyright (C) 2012 Samsung Electronics
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# R. Chandrasekar <rcsekar@samsung.com>
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#
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# See file CREDITS for list of people who contributed to this
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# project.
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; either version 2 of
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# the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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# MA 02111-1307 USA
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#
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include $(TOPDIR)/config.mk
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LIB := $(obj)libsound.o
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COBJS-$(CONFIG_SOUND) += sound.o
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COBJS-$(CONFIG_I2S) += samsung-i2s.o
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COBJS := $(COBJS-y)
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SRCS := $(COBJS:.o=.c)
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OBJS := $(addprefix $(obj),$(COBJS))
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all: $(LIB)
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$(LIB): $(obj).depend $(OBJS)
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$(call cmd_link_o_target, $(OBJS))
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#########################################################################
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# defines $(obj).depend target
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include $(SRCTREE)/rules.mk
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sinclude $(obj).depend
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#
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@ -0,0 +1,358 @@
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/*
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* Copyright (C) 2012 Samsung Electronics
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* R. Chandrasekar <rcsekar@samsung.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <asm/arch/clk.h>
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#include <asm/arch/pinmux.h>
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#include <asm/arch/i2s-regs.h>
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#include <asm/io.h>
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#include <common.h>
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#include <sound.h>
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#include <i2s.h>
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#define FIC_TX2COUNT(x) (((x) >> 24) & 0xf)
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#define FIC_TX1COUNT(x) (((x) >> 16) & 0xf)
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#define FIC_TXCOUNT(x) (((x) >> 8) & 0xf)
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#define FIC_RXCOUNT(x) (((x) >> 0) & 0xf)
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#define FICS_TXCOUNT(x) (((x) >> 8) & 0x7f)
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#define TIMEOUT_I2S_TX 100 /* i2s transfer timeout */
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/*
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* Sets the frame size for I2S LR clock
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*
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* @param i2s_reg i2s regiter address
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* @param rfs Frame Size
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*/
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static void i2s_set_lr_framesize(struct i2s_reg *i2s_reg, unsigned int rfs)
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{
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unsigned int mod = readl(&i2s_reg->mod);
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mod &= ~MOD_RCLK_MASK;
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switch (rfs) {
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case 768:
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mod |= MOD_RCLK_768FS;
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break;
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case 512:
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mod |= MOD_RCLK_512FS;
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break;
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case 384:
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mod |= MOD_RCLK_384FS;
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break;
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default:
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mod |= MOD_RCLK_256FS;
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break;
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}
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writel(mod, &i2s_reg->mod);
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}
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/*
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* Sets the i2s transfer control
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*
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* @param i2s_reg i2s regiter address
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* @param on 1 enable tx , 0 disable tx transfer
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*/
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static void i2s_txctrl(struct i2s_reg *i2s_reg, int on)
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{
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unsigned int con = readl(&i2s_reg->con);
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unsigned int mod = readl(&i2s_reg->mod) & ~MOD_MASK;
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if (on) {
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con |= CON_ACTIVE;
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con &= ~CON_TXCH_PAUSE;
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} else {
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con |= CON_TXCH_PAUSE;
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con &= ~CON_ACTIVE;
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}
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writel(mod, &i2s_reg->mod);
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writel(con, &i2s_reg->con);
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}
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/*
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* set the bit clock frame size (in multiples of LRCLK)
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*
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* @param i2s_reg i2s regiter address
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* @param bfs bit Frame Size
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*/
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static void i2s_set_bitclk_framesize(struct i2s_reg *i2s_reg, unsigned bfs)
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{
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unsigned int mod = readl(&i2s_reg->mod);
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mod &= ~MOD_BCLK_MASK;
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switch (bfs) {
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case 48:
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mod |= MOD_BCLK_48FS;
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break;
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case 32:
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mod |= MOD_BCLK_32FS;
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break;
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case 24:
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mod |= MOD_BCLK_24FS;
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break;
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case 16:
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mod |= MOD_BCLK_16FS;
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break;
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default:
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return;
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}
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writel(mod, &i2s_reg->mod);
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}
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/*
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* flushes the i2stx fifo
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*
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* @param i2s_reg i2s regiter address
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* @param flush Tx fifo flush command (0x00 - do not flush
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* 0x80 - flush tx fifo)
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*/
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void i2s_fifo(struct i2s_reg *i2s_reg, unsigned int flush)
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{
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/* Flush the FIFO */
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setbits_le32(&i2s_reg->fic, flush);
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clrbits_le32(&i2s_reg->fic, flush);
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}
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/*
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* Set System Clock direction
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*
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* @param i2s_reg i2s regiter address
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* @param dir Clock direction
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*
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* @return int value 0 for success, -1 in case of error
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*/
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int i2s_set_sysclk_dir(struct i2s_reg *i2s_reg, int dir)
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{
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unsigned int mod = readl(&i2s_reg->mod);
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if (dir == SND_SOC_CLOCK_IN)
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mod |= MOD_CDCLKCON;
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else
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mod &= ~MOD_CDCLKCON;
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writel(mod, &i2s_reg->mod);
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return 0;
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}
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/*
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* Sets I2S Clcok format
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*
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* @param fmt i2s clock properties
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* @param i2s_reg i2s regiter address
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*
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* @return int value 0 for success, -1 in case of error
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*/
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int i2s_set_fmt(struct i2s_reg *i2s_reg, unsigned int fmt)
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{
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unsigned int mod = readl(&i2s_reg->mod);
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unsigned int tmp = 0;
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unsigned int ret = 0;
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/* Format is priority */
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switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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case SND_SOC_DAIFMT_RIGHT_J:
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tmp |= MOD_LR_RLOW;
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tmp |= MOD_SDF_MSB;
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break;
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case SND_SOC_DAIFMT_LEFT_J:
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tmp |= MOD_LR_RLOW;
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tmp |= MOD_SDF_LSB;
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break;
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case SND_SOC_DAIFMT_I2S:
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tmp |= MOD_SDF_IIS;
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break;
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default:
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debug("%s: Invalid format priority [0x%x]\n", __func__,
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(fmt & SND_SOC_DAIFMT_FORMAT_MASK));
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return -1;
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}
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/*
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* INV flag is relative to the FORMAT flag - if set it simply
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* flips the polarity specified by the Standard
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*/
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switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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case SND_SOC_DAIFMT_NB_NF:
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break;
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case SND_SOC_DAIFMT_NB_IF:
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if (tmp & MOD_LR_RLOW)
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tmp &= ~MOD_LR_RLOW;
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else
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tmp |= MOD_LR_RLOW;
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break;
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default:
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debug("%s: Invalid clock ploarity input [0x%x]\n", __func__,
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(fmt & SND_SOC_DAIFMT_INV_MASK));
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return -1;
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}
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switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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case SND_SOC_DAIFMT_CBS_CFS:
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tmp |= MOD_SLAVE;
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break;
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case SND_SOC_DAIFMT_CBM_CFM:
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/* Set default source clock in Master mode */
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ret = i2s_set_sysclk_dir(i2s_reg, SND_SOC_CLOCK_OUT);
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if (ret != 0) {
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debug("%s:set i2s clock direction failed\n", __func__);
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return -1;
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}
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break;
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default:
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debug("%s: Invalid master selection [0x%x]\n", __func__,
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(fmt & SND_SOC_DAIFMT_MASTER_MASK));
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return -1;
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}
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mod &= ~(MOD_SDF_MASK | MOD_LR_RLOW | MOD_SLAVE);
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mod |= tmp;
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writel(mod, &i2s_reg->mod);
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return 0;
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}
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/*
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* Sets the sample width in bits
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*
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* @param blc samplewidth (size of sample in bits)
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* @param i2s_reg i2s regiter address
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*
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* @return int value 0 for success, -1 in case of error
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*/
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int i2s_set_samplesize(struct i2s_reg *i2s_reg, unsigned int blc)
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{
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unsigned int mod = readl(&i2s_reg->mod);
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mod &= ~MOD_BLCP_MASK;
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mod &= ~MOD_BLC_MASK;
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switch (blc) {
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case 8:
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mod |= MOD_BLCP_8BIT;
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mod |= MOD_BLC_8BIT;
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break;
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case 16:
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mod |= MOD_BLCP_16BIT;
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mod |= MOD_BLC_16BIT;
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break;
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case 24:
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mod |= MOD_BLCP_24BIT;
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mod |= MOD_BLC_24BIT;
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break;
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default:
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debug("%s: Invalid sample size input [0x%x]\n",
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__func__, blc);
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return -1;
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}
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writel(mod, &i2s_reg->mod);
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return 0;
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}
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int i2s_transfer_tx_data(struct i2stx_info *pi2s_tx, unsigned int *data,
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unsigned long data_size)
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{
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int i;
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int start;
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struct i2s_reg *i2s_reg =
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(struct i2s_reg *)pi2s_tx->base_address;
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if (data_size < FIFO_LENGTH) {
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debug("%s : Invalid data size\n", __func__);
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return -1; /* invalid pcm data size */
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}
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/* fill the tx buffer before stating the tx transmit */
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for (i = 0; i < FIFO_LENGTH; i++)
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writel(*data++, &i2s_reg->txd);
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data_size -= FIFO_LENGTH;
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i2s_txctrl(i2s_reg, I2S_TX_ON);
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while (data_size > 0) {
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start = get_timer(0);
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if (!(CON_TXFIFO_FULL & (readl(&i2s_reg->con)))) {
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writel(*data++, &i2s_reg->txd);
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data_size--;
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} else {
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if (get_timer(start) > TIMEOUT_I2S_TX) {
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i2s_txctrl(i2s_reg, I2S_TX_OFF);
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debug("%s: I2S Transfer Timeout\n", __func__);
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return -1;
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}
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}
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}
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i2s_txctrl(i2s_reg, I2S_TX_OFF);
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return 0;
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}
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int i2s_tx_init(struct i2stx_info *pi2s_tx)
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{
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int ret;
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struct i2s_reg *i2s_reg =
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(struct i2s_reg *)pi2s_tx->base_address;
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/* Initialize GPIO for I2s */
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exynos_pinmux_config(PERIPH_ID_I2S1, 0);
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/* Set EPLL Clock */
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ret = set_epll_clk(pi2s_tx->audio_pll_clk);
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if (ret != 0) {
|
||||||
|
debug("%s: epll clock set rate falied\n", __func__);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Select Clk Source for Audio1 */
|
||||||
|
set_i2s_clk_source();
|
||||||
|
|
||||||
|
/* Set Prescaler to get MCLK */
|
||||||
|
set_i2s_clk_prescaler(pi2s_tx->audio_pll_clk,
|
||||||
|
(pi2s_tx->samplingrate * (pi2s_tx->rfs)));
|
||||||
|
|
||||||
|
/* Configure I2s format */
|
||||||
|
ret = i2s_set_fmt(i2s_reg, (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
|
||||||
|
SND_SOC_DAIFMT_CBM_CFM));
|
||||||
|
if (ret == 0) {
|
||||||
|
i2s_set_lr_framesize(i2s_reg, pi2s_tx->rfs);
|
||||||
|
ret = i2s_set_samplesize(i2s_reg, pi2s_tx->bitspersample);
|
||||||
|
if (ret != 0) {
|
||||||
|
debug("%s:set sample rate failed\n", __func__);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
i2s_set_bitclk_framesize(i2s_reg, pi2s_tx->bfs);
|
||||||
|
/* disable i2s transfer flag and flush the fifo */
|
||||||
|
i2s_txctrl(i2s_reg, I2S_TX_OFF);
|
||||||
|
i2s_fifo(i2s_reg, FIC_TXFLUSH);
|
||||||
|
} else {
|
||||||
|
debug("%s: failed\n", __func__);
|
||||||
|
}
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,228 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2012 Samsung Electronics
|
||||||
|
* R. Chandrasekar <rcsekar@samsung.com>
|
||||||
|
*
|
||||||
|
* See file CREDITS for list of people who contributed to this
|
||||||
|
* project.
|
||||||
|
*
|
||||||
|
* 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, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||||
|
* MA 02111-1307 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
#include <malloc.h>
|
||||||
|
#include <common.h>
|
||||||
|
#include <asm/io.h>
|
||||||
|
#include <i2c.h>
|
||||||
|
#include <i2s.h>
|
||||||
|
#include <sound.h>
|
||||||
|
#include "wm8994.h"
|
||||||
|
#include <asm/arch/sound.h>
|
||||||
|
|
||||||
|
/* defines */
|
||||||
|
#define SOUND_400_HZ 400
|
||||||
|
#define SOUND_BITS_IN_BYTE 8
|
||||||
|
|
||||||
|
static struct i2stx_info g_i2stx_pri;
|
||||||
|
static struct sound_codec_info g_codec_info;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* get_sound_fdt_values gets fdt values for i2s parameters
|
||||||
|
*
|
||||||
|
* @param i2stx_info i2s transmitter transfer param structure
|
||||||
|
* @param blob FDT blob
|
||||||
|
*/
|
||||||
|
static void get_sound_i2s_values(struct i2stx_info *i2s)
|
||||||
|
{
|
||||||
|
i2s->base_address = samsung_get_base_i2s();
|
||||||
|
i2s->audio_pll_clk = I2S_PLL_CLK;
|
||||||
|
i2s->samplingrate = I2S_SAMPLING_RATE;
|
||||||
|
i2s->bitspersample = I2S_BITS_PER_SAMPLE;
|
||||||
|
i2s->channels = I2S_CHANNELS;
|
||||||
|
i2s->rfs = I2S_RFS;
|
||||||
|
i2s->bfs = I2S_BFS;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Gets fdt values for wm8994 config parameters
|
||||||
|
*
|
||||||
|
* @param pcodec_info codec information structure
|
||||||
|
* @param blob FDT blob
|
||||||
|
* @return int value, 0 for success
|
||||||
|
*/
|
||||||
|
static int get_sound_wm8994_values(struct sound_codec_info *pcodec_info)
|
||||||
|
{
|
||||||
|
int error = 0;
|
||||||
|
|
||||||
|
switch (AUDIO_COMPAT) {
|
||||||
|
case AUDIO_COMPAT_SPI:
|
||||||
|
debug("%s: Support not added for SPI interface\n", __func__);
|
||||||
|
return -1;
|
||||||
|
break;
|
||||||
|
case AUDIO_COMPAT_I2C:
|
||||||
|
pcodec_info->i2c_bus = AUDIO_I2C_BUS;
|
||||||
|
pcodec_info->i2c_dev_addr = AUDIO_I2C_REG;
|
||||||
|
debug("i2c dev addr = %d\n", pcodec_info->i2c_dev_addr);
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
debug("%s: Unknown compat id %d\n", __func__, AUDIO_COMPAT);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (error == -1) {
|
||||||
|
debug("fail to get wm8994 codec node properties\n");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Gets fdt values for codec config parameters
|
||||||
|
*
|
||||||
|
* @param pcodec_info codec information structure
|
||||||
|
* @param blob FDT blob
|
||||||
|
* @return int value, 0 for success
|
||||||
|
*/
|
||||||
|
static int get_sound_codec_values(struct sound_codec_info *pcodec_info)
|
||||||
|
{
|
||||||
|
int error = 0;
|
||||||
|
const char *codectype;
|
||||||
|
|
||||||
|
codectype = AUDIO_CODEC;
|
||||||
|
|
||||||
|
if (!strcmp(codectype, "wm8994")) {
|
||||||
|
pcodec_info->codec_type = CODEC_WM_8994;
|
||||||
|
error = get_sound_wm8994_values(pcodec_info);
|
||||||
|
} else {
|
||||||
|
error = -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (error == -1) {
|
||||||
|
debug("fail to get sound codec node properties\n");
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
int sound_init(void)
|
||||||
|
{
|
||||||
|
int ret;
|
||||||
|
struct i2stx_info *pi2s_tx = &g_i2stx_pri;
|
||||||
|
struct sound_codec_info *pcodec_info = &g_codec_info;
|
||||||
|
|
||||||
|
/* Get the I2S Values */
|
||||||
|
get_sound_i2s_values(pi2s_tx);
|
||||||
|
|
||||||
|
/* Get the codec Values */
|
||||||
|
if (get_sound_codec_values(pcodec_info) < 0)
|
||||||
|
return -1;
|
||||||
|
|
||||||
|
ret = i2s_tx_init(pi2s_tx);
|
||||||
|
if (ret) {
|
||||||
|
debug("%s: Failed to init i2c transmit: ret=%d\n", __func__,
|
||||||
|
ret);
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Check the codec type and initialise the same */
|
||||||
|
if (pcodec_info->codec_type == CODEC_WM_8994) {
|
||||||
|
ret = wm8994_init(pcodec_info, WM8994_AIF2,
|
||||||
|
pi2s_tx->samplingrate,
|
||||||
|
(pi2s_tx->samplingrate * (pi2s_tx->rfs)),
|
||||||
|
pi2s_tx->bitspersample, pi2s_tx->channels);
|
||||||
|
} else {
|
||||||
|
debug("%s: Unknown code type %d\n", __func__,
|
||||||
|
pcodec_info->codec_type);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
if (ret) {
|
||||||
|
debug("%s: Codec init failed\n", __func__);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Generates square wave sound data for 1 second
|
||||||
|
*
|
||||||
|
* @param data data buffer pointer
|
||||||
|
* @param size size of the buffer
|
||||||
|
* @param freq frequency of the wave
|
||||||
|
*/
|
||||||
|
static void sound_prepare_buffer(unsigned short *data, int size, uint32_t freq)
|
||||||
|
{
|
||||||
|
const int sample = 48000;
|
||||||
|
const unsigned short amplitude = 16000; /* between 1 and 32767 */
|
||||||
|
const int period = freq ? sample / freq : 0;
|
||||||
|
const int half = period / 2;
|
||||||
|
|
||||||
|
assert(freq);
|
||||||
|
|
||||||
|
/* Make sure we don't overflow our buffer */
|
||||||
|
if (size % 2)
|
||||||
|
size--;
|
||||||
|
|
||||||
|
while (size) {
|
||||||
|
int i;
|
||||||
|
for (i = 0; size && i < half; i++) {
|
||||||
|
size -= 2;
|
||||||
|
*data++ = amplitude;
|
||||||
|
*data++ = amplitude;
|
||||||
|
}
|
||||||
|
for (i = 0; size && i < period - half; i++) {
|
||||||
|
size -= 2;
|
||||||
|
*data++ = -amplitude;
|
||||||
|
*data++ = -amplitude;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
int sound_play(uint32_t msec, uint32_t frequency)
|
||||||
|
{
|
||||||
|
unsigned int *data;
|
||||||
|
unsigned long data_size;
|
||||||
|
unsigned int ret = 0;
|
||||||
|
|
||||||
|
/*Buffer length computation */
|
||||||
|
data_size = g_i2stx_pri.samplingrate * g_i2stx_pri.channels;
|
||||||
|
data_size *= (g_i2stx_pri.bitspersample / SOUND_BITS_IN_BYTE);
|
||||||
|
data = malloc(data_size);
|
||||||
|
|
||||||
|
if (data == NULL) {
|
||||||
|
debug("%s: malloc failed\n", __func__);
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
sound_prepare_buffer((unsigned short *)data,
|
||||||
|
data_size / sizeof(unsigned short), frequency);
|
||||||
|
|
||||||
|
while (msec >= 1000) {
|
||||||
|
ret = i2s_transfer_tx_data(&g_i2stx_pri, data,
|
||||||
|
(data_size / sizeof(int)));
|
||||||
|
msec -= 1000;
|
||||||
|
}
|
||||||
|
if (msec) {
|
||||||
|
unsigned long size =
|
||||||
|
(data_size * msec) / (sizeof(int) * 1000);
|
||||||
|
|
||||||
|
ret = i2s_transfer_tx_data(&g_i2stx_pri, data, size);
|
||||||
|
}
|
||||||
|
|
||||||
|
free(data);
|
||||||
|
|
||||||
|
return ret;
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,127 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2012 Samsung Electronics
|
||||||
|
* R. Chandrasekar <rcsekar@samsung.com>
|
||||||
|
*
|
||||||
|
* See file CREDITS for list of people who contributed to this
|
||||||
|
* project.
|
||||||
|
*
|
||||||
|
* 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, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||||
|
* MA 02111-1307 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __I2S_H__
|
||||||
|
#define __I2S_H__
|
||||||
|
|
||||||
|
/*
|
||||||
|
* DAI hardware audio formats.
|
||||||
|
*
|
||||||
|
* Describes the physical PCM data formating and clocking. Add new formats
|
||||||
|
* to the end.
|
||||||
|
*/
|
||||||
|
#define SND_SOC_DAIFMT_I2S 1 /* I2S mode */
|
||||||
|
#define SND_SOC_DAIFMT_RIGHT_J 2 /* Right Justified mode */
|
||||||
|
#define SND_SOC_DAIFMT_LEFT_J 3 /* Left Justified mode */
|
||||||
|
#define SND_SOC_DAIFMT_DSP_A 4 /* L data MSB after FRM LRC */
|
||||||
|
#define SND_SOC_DAIFMT_DSP_B 5 /* L data MSB during FRM LRC */
|
||||||
|
#define SND_SOC_DAIFMT_AC97 6 /* AC97 */
|
||||||
|
#define SND_SOC_DAIFMT_PDM 7 /* Pulse density modulation */
|
||||||
|
|
||||||
|
/* left and right justified also known as MSB and LSB respectively */
|
||||||
|
#define SND_SOC_DAIFMT_MSB SND_SOC_DAIFMT_LEFT_J
|
||||||
|
#define SND_SOC_DAIFMT_LSB SND_SOC_DAIFMT_RIGHT_J
|
||||||
|
|
||||||
|
/*
|
||||||
|
* DAI hardware signal inversions.
|
||||||
|
*
|
||||||
|
* Specifies whether the DAI can also support inverted clocks for the specified
|
||||||
|
* format.
|
||||||
|
*/
|
||||||
|
#define SND_SOC_DAIFMT_NB_NF (1 << 8) /* normal bit clock + frame */
|
||||||
|
#define SND_SOC_DAIFMT_NB_IF (2 << 8) /* normal BCLK + inv FRM */
|
||||||
|
#define SND_SOC_DAIFMT_IB_NF (3 << 8) /* invert BCLK + nor FRM */
|
||||||
|
#define SND_SOC_DAIFMT_IB_IF (4 << 8) /* invert BCLK + FRM */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* DAI hardware clock masters.
|
||||||
|
*
|
||||||
|
* This is wrt the codec, the inverse is true for the interface
|
||||||
|
* i.e. if the codec is clk and FRM master then the interface is
|
||||||
|
* clk and frame slave.
|
||||||
|
*/
|
||||||
|
#define SND_SOC_DAIFMT_CBM_CFM (1 << 12) /* codec clk & FRM master */
|
||||||
|
#define SND_SOC_DAIFMT_CBS_CFM (2 << 12) /* codec clk slave & FRM master */
|
||||||
|
#define SND_SOC_DAIFMT_CBM_CFS (3 << 12) /* codec clk master & frame slave */
|
||||||
|
#define SND_SOC_DAIFMT_CBS_CFS (4 << 12) /* codec clk & FRM slave */
|
||||||
|
|
||||||
|
#define SND_SOC_DAIFMT_FORMAT_MASK 0x000f
|
||||||
|
#define SND_SOC_DAIFMT_CLOCK_MASK 0x00f0
|
||||||
|
#define SND_SOC_DAIFMT_INV_MASK 0x0f00
|
||||||
|
#define SND_SOC_DAIFMT_MASTER_MASK 0xf000
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Master Clock Directions
|
||||||
|
*/
|
||||||
|
#define SND_SOC_CLOCK_IN 0
|
||||||
|
#define SND_SOC_CLOCK_OUT 1
|
||||||
|
|
||||||
|
/* I2S Tx Control */
|
||||||
|
#define I2S_TX_ON 1
|
||||||
|
#define I2S_TX_OFF 0
|
||||||
|
|
||||||
|
#define FIFO_LENGTH 64
|
||||||
|
|
||||||
|
/* I2s Registers */
|
||||||
|
struct i2s_reg {
|
||||||
|
unsigned int con; /* base + 0 , Control register */
|
||||||
|
unsigned int mod; /* Mode register */
|
||||||
|
unsigned int fic; /* FIFO control register */
|
||||||
|
unsigned int psr; /* Reserved */
|
||||||
|
unsigned int txd; /* Transmit data register */
|
||||||
|
unsigned int rxd; /* Receive Data Register */
|
||||||
|
};
|
||||||
|
|
||||||
|
/* This structure stores the i2s related information */
|
||||||
|
struct i2stx_info {
|
||||||
|
unsigned int rfs; /* LR clock frame size */
|
||||||
|
unsigned int bfs; /* Bit slock frame size */
|
||||||
|
unsigned int audio_pll_clk; /* Audio pll frequency in Hz */
|
||||||
|
unsigned int samplingrate; /* sampling rate */
|
||||||
|
unsigned int bitspersample; /* bits per sample */
|
||||||
|
unsigned int channels; /* audio channels */
|
||||||
|
unsigned int base_address; /* I2S Register Base */
|
||||||
|
};
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Sends the given data through i2s tx
|
||||||
|
*
|
||||||
|
* @param pi2s_tx pointer of i2s transmitter parameter structure.
|
||||||
|
* @param data address of the data buffer
|
||||||
|
* @param data_size array size of the int buffer (total size / size of int)
|
||||||
|
*
|
||||||
|
* @return int value 0 for success, -1 in case of error
|
||||||
|
*/
|
||||||
|
int i2s_transfer_tx_data(struct i2stx_info *pi2s_tx, unsigned *data,
|
||||||
|
unsigned long data_size);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Initialise i2s transmiter
|
||||||
|
*
|
||||||
|
* @param pi2s_tx pointer of i2s transmitter parameter structure.
|
||||||
|
*
|
||||||
|
* @return int value 0 for success, -1 in case of error
|
||||||
|
*/
|
||||||
|
int i2s_tx_init(struct i2stx_info *pi2s_tx);
|
||||||
|
|
||||||
|
#endif /* __I2S_H__ */
|
||||||
|
|
@ -0,0 +1,62 @@
|
||||||
|
/*
|
||||||
|
* Copyright (C) 2012 Samsung Electronics
|
||||||
|
* R. Chandrasekar < rcsekar@samsung.com>
|
||||||
|
*
|
||||||
|
* See file CREDITS for list of people who contributed to this
|
||||||
|
* project.
|
||||||
|
*
|
||||||
|
* 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, write to the Free Software
|
||||||
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||||
|
* MA 02111-1307 USA
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef __SOUND_H__
|
||||||
|
#define __SOUND_H__
|
||||||
|
|
||||||
|
/* sound codec enum */
|
||||||
|
enum en_sound_codec {
|
||||||
|
CODEC_WM_8994,
|
||||||
|
CODEC_WM_8995,
|
||||||
|
CODEC_MAX
|
||||||
|
};
|
||||||
|
|
||||||
|
/* sound codec enum */
|
||||||
|
enum sound_compat {
|
||||||
|
AUDIO_COMPAT_SPI,
|
||||||
|
AUDIO_COMPAT_I2C,
|
||||||
|
};
|
||||||
|
|
||||||
|
/* Codec information structure to store the info from device tree */
|
||||||
|
struct sound_codec_info {
|
||||||
|
int i2c_bus;
|
||||||
|
int i2c_dev_addr;
|
||||||
|
enum en_sound_codec codec_type;
|
||||||
|
};
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Initialises audio sub system
|
||||||
|
*
|
||||||
|
* @return int value 0 for success, -1 for error
|
||||||
|
*/
|
||||||
|
int sound_init(void);
|
||||||
|
|
||||||
|
/*
|
||||||
|
* plays the pcm data buffer in pcm_data.h through i2s1 to make the
|
||||||
|
* sine wave sound
|
||||||
|
*
|
||||||
|
* @return int 0 for success, -1 for error
|
||||||
|
*/
|
||||||
|
int sound_play(uint32_t msec, uint32_t frequency);
|
||||||
|
|
||||||
|
#endif /* __SOUND__H__ */
|
||||||
Loading…
Reference in New Issue