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 --- Changes in V2: - renamed i2s.c to samsung-i2s.c. Changes in V3: - wave sine table removed and the same in calculated in a function. Makefile | 1 + drivers/sound/Makefile | 47 ++++++ drivers/sound/samsung-i2s.c | 358 +++++++++++++++++++++++++++++++++++++++++++ drivers/sound/sound.c | 228 +++++++++++++++++++++++++++ include/i2s.h | 127 +++++++++++++++ include/sound.h | 62 ++++++++ 6 files changed, 823 insertions(+), 0 deletions(-) create mode 100644 drivers/sound/Makefile create mode 100644 drivers/sound/samsung-i2s.c create mode 100644 drivers/sound/sound.c create mode 100644 include/i2s.h create mode 100644 include/sound.h

diff --git a/Makefile b/Makefile index a40d4cc..f7d7f47 100644 --- a/Makefile +++ b/Makefile @@ -293,6 +293,7 @@ LIBS-y += arch/powerpc/cpu/mpc8xxx/lib8xxx.o endif LIBS-y += drivers/rtc/librtc.o LIBS-y += drivers/serial/libserial.o +LIBS-y += drivers/sound/libsound.o LIBS-$(CONFIG_GENERIC_LPC_TPM) += drivers/tpm/libtpm.o LIBS-y += drivers/twserial/libtws.o LIBS-y += drivers/usb/eth/libusb_eth.o diff --git a/drivers/sound/Makefile b/drivers/sound/Makefile new file mode 100644 index 0000000..18ad2c9 --- /dev/null +++ b/drivers/sound/Makefile @@ -0,0 +1,47 @@ +# +# 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 $(TOPDIR)/config.mk + +LIB := $(obj)libsound.o + +COBJS-$(CONFIG_SOUND) += sound.o +COBJS-$(CONFIG_I2S) += samsung-i2s.o + +COBJS := $(COBJS-y) +SRCS := $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) + +all: $(LIB) + +$(LIB): $(obj).depend $(OBJS) + $(call cmd_link_o_target, $(OBJS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +# diff --git a/drivers/sound/samsung-i2s.c b/drivers/sound/samsung-i2s.c new file mode 100644 index 0000000..3ce0b59 --- /dev/null +++ b/drivers/sound/samsung-i2s.c @@ -0,0 +1,358 @@ +/* + * 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 <asm/arch/clk.h> +#include <asm/arch/pinmux.h> +#include <asm/arch/i2s-regs.h> +#include <asm/io.h> +#include <common.h> +#include <sound.h> +#include <i2s.h> + +#define FIC_TX2COUNT(x) (((x) >> 24) & 0xf) +#define FIC_TX1COUNT(x) (((x) >> 16) & 0xf) +#define FIC_TXCOUNT(x) (((x) >> 8) & 0xf) +#define FIC_RXCOUNT(x) (((x) >> 0) & 0xf) +#define FICS_TXCOUNT(x) (((x) >> 8) & 0x7f) + +#define TIMEOUT_I2S_TX 100 /* i2s transfer timeout */ + +/* + * Sets the frame size for I2S LR clock + * + * @param i2s_reg i2s regiter address + * @param rfs Frame Size + */ +static void i2s_set_lr_framesize(struct i2s_reg *i2s_reg, unsigned int rfs) +{ + unsigned int mod = readl(&i2s_reg->mod); + + mod &= ~MOD_RCLK_MASK; + + switch (rfs) { + case 768: + mod |= MOD_RCLK_768FS; + break; + case 512: + mod |= MOD_RCLK_512FS; + break; + case 384: + mod |= MOD_RCLK_384FS; + break; + default: + mod |= MOD_RCLK_256FS; + break; + } + + writel(mod, &i2s_reg->mod); +} + +/* + * Sets the i2s transfer control + * + * @param i2s_reg i2s regiter address + * @param on 1 enable tx , 0 disable tx transfer + */ +static void i2s_txctrl(struct i2s_reg *i2s_reg, int on) +{ + unsigned int con = readl(&i2s_reg->con); + unsigned int mod = readl(&i2s_reg->mod) & ~MOD_MASK; + + if (on) { + con |= CON_ACTIVE; + con &= ~CON_TXCH_PAUSE; + + } else { + + con |= CON_TXCH_PAUSE; + con &= ~CON_ACTIVE; + } + + writel(mod, &i2s_reg->mod); + writel(con, &i2s_reg->con); +} + +/* + * set the bit clock frame size (in multiples of LRCLK) + * + * @param i2s_reg i2s regiter address + * @param bfs bit Frame Size + */ +static void i2s_set_bitclk_framesize(struct i2s_reg *i2s_reg, unsigned bfs) +{ + unsigned int mod = readl(&i2s_reg->mod); + + mod &= ~MOD_BCLK_MASK; + + switch (bfs) { + case 48: + mod |= MOD_BCLK_48FS; + break; + case 32: + mod |= MOD_BCLK_32FS; + break; + case 24: + mod |= MOD_BCLK_24FS; + break; + case 16: + mod |= MOD_BCLK_16FS; + break; + default: + return; + } + writel(mod, &i2s_reg->mod); +} + +/* + * flushes the i2stx fifo + * + * @param i2s_reg i2s regiter address + * @param flush Tx fifo flush command (0x00 - do not flush + * 0x80 - flush tx fifo) + */ +void i2s_fifo(struct i2s_reg *i2s_reg, unsigned int flush) +{ + /* Flush the FIFO */ + setbits_le32(&i2s_reg->fic, flush); + clrbits_le32(&i2s_reg->fic, flush); +} + +/* + * Set System Clock direction + * + * @param i2s_reg i2s regiter address + * @param dir Clock direction + * + * @return int value 0 for success, -1 in case of error + */ +int i2s_set_sysclk_dir(struct i2s_reg *i2s_reg, int dir) +{ + unsigned int mod = readl(&i2s_reg->mod); + + if (dir == SND_SOC_CLOCK_IN) + mod |= MOD_CDCLKCON; + else + mod &= ~MOD_CDCLKCON; + + writel(mod, &i2s_reg->mod); + + return 0; +} + +/* + * Sets I2S Clcok format + * + * @param fmt i2s clock properties + * @param i2s_reg i2s regiter address + * + * @return int value 0 for success, -1 in case of error + */ +int i2s_set_fmt(struct i2s_reg *i2s_reg, unsigned int fmt) +{ + unsigned int mod = readl(&i2s_reg->mod); + unsigned int tmp = 0; + unsigned int ret = 0; + + /* Format is priority */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_RIGHT_J: + tmp |= MOD_LR_RLOW; + tmp |= MOD_SDF_MSB; + break; + case SND_SOC_DAIFMT_LEFT_J: + tmp |= MOD_LR_RLOW; + tmp |= MOD_SDF_LSB; + break; + case SND_SOC_DAIFMT_I2S: + tmp |= MOD_SDF_IIS; + break; + default: + debug("%s: Invalid format priority [0x%x]\n", __func__, + (fmt & SND_SOC_DAIFMT_FORMAT_MASK)); + return -1; + } + + /* + * INV flag is relative to the FORMAT flag - if set it simply + * flips the polarity specified by the Standard + */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + case SND_SOC_DAIFMT_NB_IF: + if (tmp & MOD_LR_RLOW) + tmp &= ~MOD_LR_RLOW; + else + tmp |= MOD_LR_RLOW; + break; + default: + debug("%s: Invalid clock ploarity input [0x%x]\n", __func__, + (fmt & SND_SOC_DAIFMT_INV_MASK)); + return -1; + } + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: + tmp |= MOD_SLAVE; + break; + case SND_SOC_DAIFMT_CBM_CFM: + /* Set default source clock in Master mode */ + ret = i2s_set_sysclk_dir(i2s_reg, SND_SOC_CLOCK_OUT); + if (ret != 0) { + debug("%s:set i2s clock direction failed\n", __func__); + return -1; + } + break; + default: + debug("%s: Invalid master selection [0x%x]\n", __func__, + (fmt & SND_SOC_DAIFMT_MASTER_MASK)); + return -1; + } + + mod &= ~(MOD_SDF_MASK | MOD_LR_RLOW | MOD_SLAVE); + mod |= tmp; + writel(mod, &i2s_reg->mod); + + return 0; +} + +/* + * Sets the sample width in bits + * + * @param blc samplewidth (size of sample in bits) + * @param i2s_reg i2s regiter address + * + * @return int value 0 for success, -1 in case of error + */ +int i2s_set_samplesize(struct i2s_reg *i2s_reg, unsigned int blc) +{ + unsigned int mod = readl(&i2s_reg->mod); + + mod &= ~MOD_BLCP_MASK; + mod &= ~MOD_BLC_MASK; + + switch (blc) { + case 8: + mod |= MOD_BLCP_8BIT; + mod |= MOD_BLC_8BIT; + break; + case 16: + mod |= MOD_BLCP_16BIT; + mod |= MOD_BLC_16BIT; + break; + + case 24: + mod |= MOD_BLCP_24BIT; + mod |= MOD_BLC_24BIT; + break; + default: + debug("%s: Invalid sample size input [0x%x]\n", + __func__, blc); + return -1; + } + writel(mod, &i2s_reg->mod); + + return 0; +} + +int i2s_transfer_tx_data(struct i2stx_info *pi2s_tx, unsigned int *data, + unsigned long data_size) +{ + int i; + int start; + struct i2s_reg *i2s_reg = + (struct i2s_reg *)pi2s_tx->base_address; + + if (data_size < FIFO_LENGTH) { + debug("%s : Invalid data size\n", __func__); + return -1; /* invalid pcm data size */ + } + + /* fill the tx buffer before stating the tx transmit */ + for (i = 0; i < FIFO_LENGTH; i++) + writel(*data++, &i2s_reg->txd); + + data_size -= FIFO_LENGTH; + i2s_txctrl(i2s_reg, I2S_TX_ON); + + while (data_size > 0) { + start = get_timer(0); + if (!(CON_TXFIFO_FULL & (readl(&i2s_reg->con)))) { + writel(*data++, &i2s_reg->txd); + data_size--; + } else { + if (get_timer(start) > TIMEOUT_I2S_TX) { + i2s_txctrl(i2s_reg, I2S_TX_OFF); + debug("%s: I2S Transfer Timeout\n", __func__); + return -1; + } + } + } + i2s_txctrl(i2s_reg, I2S_TX_OFF); + + return 0; +} + +int i2s_tx_init(struct i2stx_info *pi2s_tx) +{ + int ret; + struct i2s_reg *i2s_reg = + (struct i2s_reg *)pi2s_tx->base_address; + + /* Initialize GPIO for I2s */ + exynos_pinmux_config(PERIPH_ID_I2S1, 0); + + /* Set EPLL Clock */ + ret = set_epll_clk(pi2s_tx->audio_pll_clk); + 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; +} diff --git a/drivers/sound/sound.c b/drivers/sound/sound.c new file mode 100644 index 0000000..ff76996 --- /dev/null +++ b/drivers/sound/sound.c @@ -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 + +/* Globals */ +struct i2stx_info g_i2stx_pri; +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; + + /* Sine wave 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; +} diff --git a/include/i2s.h b/include/i2s.h new file mode 100644 index 0000000..f1b642e --- /dev/null +++ b/include/i2s.h @@ -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__ */ diff --git a/include/sound.h b/include/sound.h new file mode 100644 index 0000000..ea0b115 --- /dev/null +++ b/include/sound.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__ */

This patch adds command to test audio playback. sound init - Initialises the audio subsystem (i2s and wm8994 codec) sound play - Plays predefined the audio data when specified length and frequency.

Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com --- Changes in V2: - None Changes in V3: - Incorporated comments from Simon Glass. common/Makefile | 1 + common/cmd_sound.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 97 insertions(+), 0 deletions(-) create mode 100644 common/cmd_sound.c

diff --git a/common/Makefile b/common/Makefile index 5442fbb..c0aa4a3 100644 --- a/common/Makefile +++ b/common/Makefile @@ -74,6 +74,7 @@ COBJS-$(CONFIG_CMD_CONSOLE) += cmd_console.o COBJS-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o COBJS-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o COBJS-$(CONFIG_CMD_DATE) += cmd_date.o +COBJS-$(CONFIG_CMD_SOUND) += cmd_sound.o ifdef CONFIG_4xx COBJS-$(CONFIG_CMD_SETGETDCR) += cmd_dcr.o endif diff --git a/common/cmd_sound.c b/common/cmd_sound.c new file mode 100644 index 0000000..459d1eb --- /dev/null +++ b/common/cmd_sound.c @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2012 Samsung Electronics + * Rajeshwari Shinde rajeshwari.s@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 <common.h> +#include <command.h> +#include <fdtdec.h> +#include <sound.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* Initilaise sound subsystem */ +static int do_init(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + int ret; + + ret = sound_init(); + if (ret) { + printf("Initialise Audio driver failed\n"); + return CMD_RET_FAILURE; + } + + return 0; +} + +/* play sound from buffer */ +static int do_play(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + int ret = 0; + int msec = 1000; + int freq = 400; + + if (argc > 1) + msec = simple_strtoul(argv[1], NULL, 10); + if (argc > 2) + freq = simple_strtoul(argv[2], NULL, 10); + + ret = sound_play(msec, freq); + if (ret) { + printf("play failed"); + return CMD_RET_FAILURE; + } + + return 0; +} + +static cmd_tbl_t cmd_sound_sub[] = { + U_BOOT_CMD_MKENT(init, 0, 1, do_init, "", ""), + U_BOOT_CMD_MKENT(play, 2, 1, do_play, "", ""), +}; + +/* process sound command */ +static int do_sound(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + cmd_tbl_t *c; + + if (argc < 1) + return CMD_RET_USAGE; + + /* Strip off leading 'sound' command argument */ + argc--; + argv++; + + c = find_cmd_tbl(argv[0], &cmd_sound_sub[0], ARRAY_SIZE(cmd_sound_sub)); + + if (c) + return c->cmd(cmdtp, flag, argc, argv); + else + return CMD_RET_USAGE; +} + +U_BOOT_CMD( + sound, 4, 1, do_sound, + "sound sub-system", + "init - initialise the sound driver\n" + "sound play [len] [freq] - play a sound for len ms at freq hz\n" +);

This patch add I2S registers

Signed-off-by: R. Chandrasekar rcsekar@samsung.com Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com Acked-by: Simon Glass sjg@chromium.org --- Changes in V2: - None Changes in V3: - None arch/arm/include/asm/arch-exynos/i2s-regs.h | 66 +++++++++++++++++++++++++++ 1 files changed, 66 insertions(+), 0 deletions(-) create mode 100644 arch/arm/include/asm/arch-exynos/i2s-regs.h

diff --git a/arch/arm/include/asm/arch-exynos/i2s-regs.h b/arch/arm/include/asm/arch-exynos/i2s-regs.h new file mode 100644 index 0000000..2326ca0 --- /dev/null +++ b/arch/arm/include/asm/arch-exynos/i2s-regs.h @@ -0,0 +1,66 @@ +/* + * 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_REGS_H__ +#define __I2S_REGS_H__ + +#define CON_TXFIFO_FULL (1 << 8) +#define CON_TXCH_PAUSE (1 << 4) +#define CON_ACTIVE (1 << 0) + +#define MOD_BLCP_SHIFT 24 +#define MOD_BLCP_16BIT (0 << MOD_BLCP_SHIFT) +#define MOD_BLCP_8BIT (1 << MOD_BLCP_SHIFT) +#define MOD_BLCP_24BIT (2 << MOD_BLCP_SHIFT) +#define MOD_BLCP_MASK (3 << MOD_BLCP_SHIFT) + +#define MOD_BLC_16BIT (0 << 13) +#define MOD_BLC_8BIT (1 << 13) +#define MOD_BLC_24BIT (2 << 13) +#define MOD_BLC_MASK (3 << 13) + +#define MOD_SLAVE (1 << 11) +#define MOD_MASK (3 << 8) +#define MOD_LR_LLOW (0 << 7) +#define MOD_LR_RLOW (1 << 7) +#define MOD_SDF_IIS (0 << 5) +#define MOD_SDF_MSB (1 << 5) +#define MOD_SDF_LSB (2 << 5) +#define MOD_SDF_MASK (3 << 5) +#define MOD_RCLK_256FS (0 << 3) +#define MOD_RCLK_512FS (1 << 3) +#define MOD_RCLK_384FS (2 << 3) +#define MOD_RCLK_768FS (3 << 3) +#define MOD_RCLK_MASK (3 << 3) +#define MOD_BCLK_32FS (0 << 1) +#define MOD_BCLK_48FS (1 << 1) +#define MOD_BCLK_16FS (2 << 1) +#define MOD_BCLK_24FS (3 << 1) +#define MOD_BCLK_MASK (3 << 1) + +#define MOD_CDCLKCON (1 << 12) + +#define FIC_TXFLUSH (1 << 15) +#define FIC_RXFLUSH (1 << 7) + +#endif /* __I2S_REGS_H__ */

This patch adds pinmux support for I2S1

Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com Acked-by: Simon Glass sjg@chromium.org --- Changes in V2: - made exynos_i2s_config pinmux function static. Changes in V3: - Incorporated comments from Simon Glass arch/arm/cpu/armv7/exynos/pinmux.c | 13 +++++++++++++ arch/arm/include/asm/arch-exynos/periph.h | 1 + 2 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/arch/arm/cpu/armv7/exynos/pinmux.c b/arch/arm/cpu/armv7/exynos/pinmux.c index 5796d56..d99daa0 100644 --- a/arch/arm/cpu/armv7/exynos/pinmux.c +++ b/arch/arm/cpu/armv7/exynos/pinmux.c @@ -230,6 +230,16 @@ static void exynos5_i2c_config(int peripheral, int flags) } }

+static void exynos5_i2s_config(int peripheral) +{ + int i; + struct exynos5_gpio_part1 *gpio1 = + (struct exynos5_gpio_part1 *) samsung_get_base_gpio_part1(); + + for (i = 0; i < 5; i++) + s5p_gpio_cfg_pin(&gpio1->b0, i, GPIO_FUNC(0x02)); +} + static int exynos5_pinmux_config(int peripheral, int flags) { switch (peripheral) { @@ -257,6 +267,9 @@ static int exynos5_pinmux_config(int peripheral, int flags) case PERIPH_ID_I2C7: exynos5_i2c_config(peripheral, flags); break; + case PERIPH_ID_I2S1: + exynos5_i2s_config(peripheral); + break; default: debug("%s: invalid peripheral %d", __func__, peripheral); return -1; diff --git a/arch/arm/include/asm/arch-exynos/periph.h b/arch/arm/include/asm/arch-exynos/periph.h index 082611c..673f4c7 100644 --- a/arch/arm/include/asm/arch-exynos/periph.h +++ b/arch/arm/include/asm/arch-exynos/periph.h @@ -38,6 +38,7 @@ enum periph_id { PERIPH_ID_I2C5, PERIPH_ID_I2C6, PERIPH_ID_I2C7, + PERIPH_ID_I2S1, PERIPH_ID_SDMMC0, PERIPH_ID_SDMMC1, PERIPH_ID_SDMMC2,

This patch adds clock support for I2S

Signed-off-by: R. Chandrasekar rcsekar@samsung.com Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com --- Changes in V2: - None Changes in V3: - Changes clock function names as suggested by Minkyu Kang. arch/arm/cpu/armv7/exynos/clock.c | 120 ++++++++++++++++++++++++++++++ arch/arm/include/asm/arch-exynos/clk.h | 3 + arch/arm/include/asm/arch-exynos/clock.h | 29 +++++++ 3 files changed, 152 insertions(+), 0 deletions(-)

diff --git a/arch/arm/cpu/armv7/exynos/clock.c b/arch/arm/cpu/armv7/exynos/clock.c index 4f3b451..5f7d884 100644 --- a/arch/arm/cpu/armv7/exynos/clock.c +++ b/arch/arm/cpu/armv7/exynos/clock.c @@ -26,6 +26,16 @@ #include <asm/arch/clock.h> #include <asm/arch/clk.h>

+/* Epll Clock division values to achive different frequency output */ +static struct set_epll_con_val exynos5_epll_div[] = { + { 192000000, 0, 48, 3, 1, 0 }, + { 180000000, 0, 45, 3, 1, 0 }, + { 73728000, 1, 73, 3, 3, 47710 }, + { 67737600, 1, 90, 4, 3, 20762 }, + { 49152000, 0, 49, 3, 3, 9961 }, + { 45158400, 0, 45, 3, 3, 10381 }, + { 180633600, 0, 45, 3, 1, 10381 } +}; /* exynos4: return pll clock frequency */ static unsigned long exynos4_get_pll_clk(int pllreg) { @@ -732,6 +742,93 @@ static unsigned long exynos5_get_i2c_clk(void) return aclk_66; }

+int exynos5_set_epll_clk(unsigned long rate) +{ + unsigned int epll_con, epll_con_k; + unsigned int i; + unsigned int lockcnt; + unsigned int start; + struct exynos5_clock *clk = + (struct exynos5_clock *)samsung_get_base_clock(); + + epll_con = readl(&clk->epll_con0); + epll_con &= ~((EPLL_CON0_LOCK_DET_EN_MASK << + EPLL_CON0_LOCK_DET_EN_SHIFT) | + EPLL_CON0_MDIV_MASK << EPLL_CON0_MDIV_SHIFT | + EPLL_CON0_PDIV_MASK << EPLL_CON0_PDIV_SHIFT | + EPLL_CON0_SDIV_MASK << EPLL_CON0_SDIV_SHIFT); + + for (i = 0; i < ARRAY_SIZE(exynos5_epll_div); i++) { + if (exynos5_epll_div[i].freq_out == rate) + break; + } + + if (i == ARRAY_SIZE(exynos5_epll_div)) + return -1; + + epll_con_k = exynos5_epll_div[i].k_dsm << 0; + epll_con |= exynos5_epll_div[i].en_lock_det << + EPLL_CON0_LOCK_DET_EN_SHIFT; + epll_con |= exynos5_epll_div[i].m_div << EPLL_CON0_MDIV_SHIFT; + epll_con |= exynos5_epll_div[i].p_div << EPLL_CON0_PDIV_SHIFT; + epll_con |= exynos5_epll_div[i].s_div << EPLL_CON0_SDIV_SHIFT; + + /* + * Required period ( in cycles) to genarate a stable clock output. + * The maximum clock time can be up to 3000 * PDIV cycles of PLLs + * frequency input (as per spec) + */ + lockcnt = 3000 * exynos5_epll_div[i].p_div; + + writel(lockcnt, &clk->epll_lock); + writel(epll_con, &clk->epll_con0); + writel(epll_con_k, &clk->epll_con1); + + start = get_timer(0); + + while (!(readl(&clk->epll_con0) & + (0x1 << EXYNOS5_EPLLCON0_LOCKED_SHIFT))) { + if (get_timer(start) > TIMEOUT_EPLL_LOCK) { + debug("%s: Timeout waiting for EPLL lock\n", __func__); + return -1; + } + } + return 0; +} + +void exynos5_set_i2s_clk_source(void) +{ + struct exynos5_clock *clk = + (struct exynos5_clock *)samsung_get_base_clock(); + + clrsetbits_le32(&clk->src_peric1, AUDIO1_SEL_MASK, + (CLK_SRC_SCLK_EPLL)); +} + +int exynos5_set_i2s_clk_prescaler(unsigned int src_frq, + unsigned int dst_frq) +{ + struct exynos5_clock *clk = + (struct exynos5_clock *)samsung_get_base_clock(); + unsigned int div; + + if ((dst_frq == 0) || (src_frq == 0)) { + debug("%s: Invalid requency input for prescaler\n", __func__); + debug("src frq = %d des frq = %d ", src_frq, dst_frq); + return -1; + } + + div = (src_frq / dst_frq); + if (div > AUDIO_1_RATIO_MASK) { + debug("%s: Frequency ratio is out of range\n", __func__); + debug("src frq = %d des frq = %d ", src_frq, dst_frq); + return -1; + } + clrsetbits_le32(&clk->div_peric4, AUDIO_1_RATIO_MASK, + (div & AUDIO_1_RATIO_MASK)); + return 0; +} + unsigned long get_pll_clk(int pllreg) { if (cpu_is_exynos5()) @@ -803,3 +900,26 @@ void set_mipi_clk(void) if (cpu_is_exynos4()) exynos4_set_mipi_clk(); } + +int set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq) +{ + + if (cpu_is_exynos5()) + return exynos5_set_i2s_clk_prescaler(src_frq, dst_frq); + else + return 0; +} + +void set_i2s_clk_source(void) +{ + if (cpu_is_exynos5()) + exynos5_set_i2s_clk_source(); +} + +int set_epll_clk(unsigned long rate) +{ + if (cpu_is_exynos5()) + return exynos5_set_epll_clk(rate); + else + return 0; +} diff --git a/arch/arm/include/asm/arch-exynos/clk.h b/arch/arm/include/asm/arch-exynos/clk.h index 5529025..2bf2c10 100644 --- a/arch/arm/include/asm/arch-exynos/clk.h +++ b/arch/arm/include/asm/arch-exynos/clk.h @@ -38,5 +38,8 @@ void set_mmc_clk(int dev_index, unsigned int div); unsigned long get_lcd_clk(void); void set_lcd_clk(void); void set_mipi_clk(void); +void set_i2s_clk_source(void); +int set_i2s_clk_prescaler(unsigned int src_frq, unsigned int dst_frq); +int set_epll_clk(unsigned long rate);

#endif diff --git a/arch/arm/include/asm/arch-exynos/clock.h b/arch/arm/include/asm/arch-exynos/clock.h index fce38ef..ff6781a 100644 --- a/arch/arm/include/asm/arch-exynos/clock.h +++ b/arch/arm/include/asm/arch-exynos/clock.h @@ -595,9 +595,38 @@ struct exynos5_clock { unsigned int pll_div2_sel; unsigned char res123[0xf5d8]; }; + +/* structure for epll configuration used in audio clock configuration */ +struct set_epll_con_val { + unsigned int freq_out; /* frequency out */ + unsigned int en_lock_det; /* enable lock detect */ + unsigned int m_div; /* m divider value */ + unsigned int p_div; /* p divider value */ + unsigned int s_div; /* s divider value */ + unsigned int k_dsm; /* k value of delta signal modulator */ +}; #endif

#define MPLL_FOUT_SEL_SHIFT 4 +#define EXYNOS5_EPLLCON0_LOCKED_SHIFT 29 /* EPLL Locked bit position*/ +#define TIMEOUT_EPLL_LOCK 1000 + +#define AUDIO_0_RATIO_MASK 0x0f +#define AUDIO_1_RATIO_MASK 0x0f + +#define AUDIO1_SEL_MASK 0xf +#define CLK_SRC_SCLK_EPLL 0x7 + +/* CON0 bit-fields */ +#define EPLL_CON0_MDIV_MASK 0x1ff +#define EPLL_CON0_PDIV_MASK 0x3f +#define EPLL_CON0_SDIV_MASK 0x7 +#define EPLL_CON0_MDIV_SHIFT 16 +#define EPLL_CON0_PDIV_SHIFT 8 +#define EPLL_CON0_SDIV_SHIFT 0 +#define EPLL_CON0_LOCK_DET_EN_SHIFT 28 +#define EPLL_CON0_LOCK_DET_EN_MASK 1 + #define MPLL_FOUT_SEL_MASK 0x1 #define BPLL_FOUT_SEL_SHIFT 0 #define BPLL_FOUT_SEL_MASK 0x1

This patch enables sound support for EXYNOS5

Signed-off-by: Rajeshwari Shinde rajeshwari.s@samsung.com Acked-by: Chander Kashyap chander.kashyap@linaro.org Acked-by: Simon Glass sjg@chromium.org --- Changes in V2: - corrected the commit message. Changes in V3: - none. include/configs/smdk5250.h | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/include/configs/smdk5250.h b/include/configs/smdk5250.h index 9e3b55b..4d6e791 100644 --- a/include/configs/smdk5250.h +++ b/include/configs/smdk5250.h @@ -219,6 +219,14 @@ #define CONFIG_MENU #endif

+/* Sound */ +#define CONFIG_CMD_SOUND +#ifdef CONFIG_CMD_SOUND +#define CONFIG_SOUND +#define CONFIG_I2S +#define CONFIG_SOUND_WM8994 +#endif + /* Enable devicetree support */ #define CONFIG_OF_LIBFDT