+// SPDX-License-Identifier: GPL-2.0+
/*
* 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>
if (on) {
con |= CON_ACTIVE;
con &= ~CON_TXCH_PAUSE;
-
} else {
-
con |= CON_TXCH_PAUSE;
con &= ~CON_ACTIVE;
}
* @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)
+static void i2s_fifo(struct i2s_reg *i2s_reg, unsigned int flush)
{
/* Flush the FIFO */
setbits_le32(&i2s_reg->fic, flush);
*
* @return int value 0 for success, -1 in case of error
*/
-int i2s_set_sysclk_dir(struct i2s_reg *i2s_reg, int dir)
+static int i2s_set_sysclk_dir(struct i2s_reg *i2s_reg, int dir)
{
unsigned int mod = readl(&i2s_reg->mod);
*
* @return int value 0 for success, -1 in case of error
*/
-int i2s_set_fmt(struct i2s_reg *i2s_reg, unsigned int fmt)
+static int i2s_set_fmt(struct i2s_reg *i2s_reg, unsigned int fmt)
{
unsigned int mod = readl(&i2s_reg->mod);
unsigned int tmp = 0;
break;
default:
debug("%s: Invalid format priority [0x%x]\n", __func__,
- (fmt & SND_SOC_DAIFMT_FORMAT_MASK));
+ (fmt & SND_SOC_DAIFMT_FORMAT_MASK));
return -1;
}
break;
default:
debug("%s: Invalid clock ploarity input [0x%x]\n", __func__,
- (fmt & SND_SOC_DAIFMT_INV_MASK));
+ (fmt & SND_SOC_DAIFMT_INV_MASK));
return -1;
}
break;
default:
debug("%s: Invalid master selection [0x%x]\n", __func__,
- (fmt & SND_SOC_DAIFMT_MASTER_MASK));
+ (fmt & SND_SOC_DAIFMT_MASTER_MASK));
return -1;
}
*
* @return int value 0 for success, -1 in case of error
*/
-int i2s_set_samplesize(struct i2s_reg *i2s_reg, unsigned int blc)
+static int i2s_set_samplesize(struct i2s_reg *i2s_reg, unsigned int blc)
{
unsigned int mod = readl(&i2s_reg->mod);
break;
default:
debug("%s: Invalid sample size input [0x%x]\n",
- __func__, blc);
+ __func__, blc);
return -1;
}
writel(mod, &i2s_reg->mod);
int ret;
struct i2s_reg *i2s_reg =
(struct i2s_reg *)pi2s_tx->base_address;
+ if (pi2s_tx->id == 0) {
+ /* Initialize GPIO for I2S-0 */
+ exynos_pinmux_config(PERIPH_ID_I2S0, 0);
+
+ /* Set EPLL Clock */
+ ret = set_epll_clk(pi2s_tx->samplingrate * pi2s_tx->rfs * 4);
+ } else if (pi2s_tx->id == 1) {
+ /* Initialize GPIO for I2S-1 */
+ exynos_pinmux_config(PERIPH_ID_I2S1, 0);
+
+ /* Set EPLL Clock */
+ ret = set_epll_clk(pi2s_tx->audio_pll_clk);
+ } else {
+ debug("%s: unsupported i2s-%d bus\n", __func__, pi2s_tx->id);
+ return -1;
+ }
- /* 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__);
+ debug("%s: epll clock set rate failed\n", __func__);
+ return -1;
+ }
+
+ /* Select Clk Source for Audio 0 or 1 */
+ ret = set_i2s_clk_source(pi2s_tx->id);
+ if (ret == -1) {
+ debug("%s: unsupported clock for i2s-%d\n", __func__,
+ pi2s_tx->id);
return -1;
}
- /* Select Clk Source for Audio1 */
- set_i2s_clk_source();
+ if (pi2s_tx->id == 0) {
+ /*Reset the i2s module */
+ writel(CON_RESET, &i2s_reg->con);
- /* Set Prescaler to get MCLK */
- set_i2s_clk_prescaler(pi2s_tx->audio_pll_clk,
- (pi2s_tx->samplingrate * (pi2s_tx->rfs)));
+ writel(MOD_OP_CLK | MOD_RCLKSRC, &i2s_reg->mod);
+ /* set i2s prescaler */
+ writel(PSREN | PSVAL, &i2s_reg->psr);
+ } else {
+ /* Set Prescaler to get MCLK */
+ ret = set_i2s_clk_prescaler(pi2s_tx->audio_pll_clk,
+ (pi2s_tx->samplingrate * (pi2s_tx->rfs)),
+ pi2s_tx->id);
+ }
+ if (ret == -1) {
+ debug("%s: unsupported prescalar for i2s-%d\n", __func__,
+ pi2s_tx->id);
+ return -1;
+ }
/* Configure I2s format */
ret = i2s_set_fmt(i2s_reg, (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
- SND_SOC_DAIFMT_CBM_CFM));
+ 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);
projects / oweals / u-boot.git / blobdiff