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Diffstat (limited to 'sound/soc/tegra/tegra30_i2s.c')
-rw-r--r--sound/soc/tegra/tegra30_i2s.c147
1 files changed, 103 insertions, 44 deletions
diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c
index a50b853135ae..72e64470008a 100644
--- a/sound/soc/tegra/tegra30_i2s.c
+++ b/sound/soc/tegra/tegra30_i2s.c
@@ -7,6 +7,7 @@
* Based on code copyright/by:
*
* Copyright (c) 2009-2010, NVIDIA Corporation.
+ * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
* Scott Peterson <speterson@nvidia.com>
*
* Copyright (C) 2010 Google, Inc.
@@ -811,7 +812,47 @@ static int configure_baseband_i2s(struct tegra30_i2s *i2s, int is_i2smaster,
int is_formatdsp, int channels, int rate, int bitsize)
{
u32 val;
- int i2sclock, bitcnt;
+ int i2sclock, bitcnt, ret;
+
+ i2sclock = rate * channels * bitsize * 2;
+
+ /* additional 8 for baseband */
+ if (is_formatdsp)
+ i2sclock *= 8;
+
+ if (is_i2smaster) {
+ ret = clk_set_parent(i2s->clk_i2s, i2s->clk_pll_a_out0);
+ if (ret) {
+ pr_err("Can't set parent of I2S clock\n");
+ return ret;
+ }
+
+ ret = clk_set_rate(i2s->clk_i2s, i2sclock);
+ if (ret) {
+ pr_err("Can't set I2S clock rate: %d\n", ret);
+ return ret;
+ }
+ } else {
+ ret = clk_set_rate(i2s->clk_i2s_sync, i2sclock);
+ if (ret) {
+ pr_err("Can't set I2S sync clock rate\n");
+ return ret;
+ }
+
+ ret = clk_set_rate(i2s->clk_audio_2x, i2sclock);
+ if (ret) {
+ pr_err("Can't set I2S sync clock rate\n");
+ return ret;
+ }
+
+ ret = clk_set_parent(i2s->clk_i2s, i2s->clk_audio_2x);
+ if (ret) {
+ pr_err("Can't set parent of audio2x clock\n");
+ return ret;
+ }
+ }
+
+ tegra30_i2s_enable_clocks(i2s);
i2s->reg_ctrl &= ~(TEGRA30_I2S_CTRL_FRAME_FORMAT_MASK |
TEGRA30_I2S_CTRL_LRCK_MASK |
@@ -846,14 +887,6 @@ static int configure_baseband_i2s(struct tegra30_i2s *i2s, int is_i2smaster,
(1 << TEGRA30_I2S_OFFSET_TX_DATA_OFFSET_SHIFT);
tegra30_i2s_write(i2s, TEGRA30_I2S_OFFSET, val);
- i2sclock = rate * channels * bitsize * 2;
-
- /* additional 8 for baseband */
- if (is_formatdsp)
- i2sclock *= 8;
-
- clk_set_rate(i2s->clk_i2s, i2sclock);
-
if (is_formatdsp) {
bitcnt = (i2sclock/rate) - 1;
val = bitcnt << TEGRA30_I2S_TIMING_CHANNEL_BIT_COUNT_SHIFT;
@@ -916,8 +949,6 @@ int tegra30_make_voice_call_connections(struct codec_config *codec_info,
codec_i2s = &i2scont[codec_info->i2s_id];
bb_i2s = &i2scont[bb_info->i2s_id];
- tegra30_i2s_enable_clocks(codec_i2s);
- tegra30_i2s_enable_clocks(bb_i2s);
/* increment the codec i2s playback ref count */
codec_i2s->playback_ref_count++;
@@ -985,61 +1016,89 @@ int tegra30_break_voice_call_connections(struct codec_config *codec_info,
{
struct tegra30_i2s *codec_i2s;
struct tegra30_i2s *bb_i2s;
+ int dcnt = 10;
codec_i2s = &i2scont[codec_info->i2s_id];
bb_i2s = &i2scont[bb_info->i2s_id];
- /* disconnect the ahub connections */
-
- /* if this is the only user of i2s tx then break ahub
- i2s rx connection */
- if (codec_i2s->playback_ref_count == 1)
- tegra30_ahub_unset_rx_cif_source(TEGRA30_AHUB_RXCIF_I2S0_RX0
- + codec_info->i2s_id);
+ /*Disable Codec I2S RX (TX to ahub)*/
+ codec_i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_XFER_EN_RX;
+ tegra30_i2s_write(codec_i2s, TEGRA30_I2S_CTRL, codec_i2s->reg_ctrl);
- tegra30_ahub_unset_rx_cif_source(TEGRA30_AHUB_RXCIF_I2S0_RX0
- + bb_info->i2s_id);
- tegra30_ahub_unset_rx_cif_source(TEGRA30_AHUB_RXCIF_DAM0_RX0
- + (codec_i2s->dam_ifc*2));
- tegra30_ahub_unset_rx_cif_source(TEGRA30_AHUB_RXCIF_DAM0_RX0
- + (bb_i2s->dam_ifc*2));
+ while (tegra30_ahub_rx_fifo_is_enabled(codec_i2s->id) && dcnt--)
+ udelay(100);
- /* disable the i2s */
+ dcnt = 10;
- /* if this is the only user of i2s tx then disable it*/
- if (codec_i2s->playback_ref_count == 1)
- codec_i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_XFER_EN_TX;
+ /*Disable baseband DAM*/
+ tegra30_dam_enable(bb_i2s->dam_ifc, TEGRA30_DAM_DISABLE,
+ TEGRA30_DAM_CHIN0_SRC);
+ tegra30_dam_free_channel(bb_i2s->dam_ifc, TEGRA30_DAM_CHIN0_SRC);
+ bb_i2s->dam_ch_refcount--;
+ if (!bb_i2s->dam_ch_refcount)
+ tegra30_dam_free_controller(bb_i2s->dam_ifc);
- codec_i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_XFER_EN_RX;
- tegra30_i2s_write(codec_i2s, TEGRA30_I2S_CTRL, codec_i2s->reg_ctrl);
+ /*Disable baseband I2S TX (RX from ahub)*/
bb_i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_XFER_EN_TX;
+ tegra30_i2s_write(bb_i2s, TEGRA30_I2S_CTRL, bb_i2s->reg_ctrl);
+
+ while (tegra30_ahub_tx_fifo_is_enabled(bb_i2s->id) && dcnt--)
+ udelay(100);
+
+ dcnt = 10;
+
+ /*Disable baseband I2S RX (TX to ahub)*/
bb_i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_XFER_EN_RX;
tegra30_i2s_write(bb_i2s, TEGRA30_I2S_CTRL, bb_i2s->reg_ctrl);
- tegra30_i2s_disable_clocks(codec_i2s);
- tegra30_i2s_disable_clocks(bb_i2s);
- /* decrement the codec i2s playback ref count */
- codec_i2s->playback_ref_count--;
- bb_i2s->playback_ref_count--;
+ while (tegra30_ahub_rx_fifo_is_enabled(bb_i2s->id) && dcnt--)
+ udelay(100);
- /* disable the codec dam */
+ dcnt = 10;
+
+ /*Disable Codec DAM*/
tegra30_dam_enable(codec_i2s->dam_ifc,
TEGRA30_DAM_DISABLE, TEGRA30_DAM_CHIN0_SRC);
- tegra30_dam_disable_clock(codec_i2s->dam_ifc);
tegra30_dam_free_channel(codec_i2s->dam_ifc,
TEGRA30_DAM_CHIN0_SRC);
codec_i2s->dam_ch_refcount--;
if (!codec_i2s->dam_ch_refcount)
tegra30_dam_free_controller(codec_i2s->dam_ifc);
- /* disable the bb dam */
- tegra30_dam_enable(bb_i2s->dam_ifc, TEGRA30_DAM_DISABLE,
- TEGRA30_DAM_CHIN0_SRC);
+ /*Disable Codec I2S TX (RX from ahub)*/
+ if (codec_i2s->playback_ref_count == 1)
+ codec_i2s->reg_ctrl &= ~TEGRA30_I2S_CTRL_XFER_EN_TX;
+
+ tegra30_i2s_write(codec_i2s, TEGRA30_I2S_CTRL, codec_i2s->reg_ctrl);
+
+ while (tegra30_ahub_tx_fifo_is_enabled(codec_i2s->id) && dcnt--)
+ udelay(100);
+
+ dcnt = 10;
+
+ /* Disconnect the ahub connections */
+ /* If this is the only user of i2s tx then break ahub
+ i2s rx connection */
+ if (codec_i2s->playback_ref_count == 1)
+ tegra30_ahub_unset_rx_cif_source(TEGRA30_AHUB_RXCIF_I2S0_RX0
+ + codec_info->i2s_id);
+
+ tegra30_ahub_unset_rx_cif_source(TEGRA30_AHUB_RXCIF_I2S0_RX0
+ + bb_info->i2s_id);
+ tegra30_ahub_unset_rx_cif_source(TEGRA30_AHUB_RXCIF_DAM0_RX0
+ + (codec_i2s->dam_ifc*2));
+ tegra30_ahub_unset_rx_cif_source(TEGRA30_AHUB_RXCIF_DAM0_RX0
+ + (bb_i2s->dam_ifc*2));
+
+ /* Decrement the codec and bb i2s playback ref count */
+ codec_i2s->playback_ref_count--;
+ bb_i2s->playback_ref_count--;
+
+ /* Disable the clocks */
+ tegra30_i2s_disable_clocks(codec_i2s);
+ tegra30_i2s_disable_clocks(bb_i2s);
+ tegra30_dam_disable_clock(codec_i2s->dam_ifc);
tegra30_dam_disable_clock(bb_i2s->dam_ifc);
- tegra30_dam_free_channel(bb_i2s->dam_ifc, TEGRA30_DAM_CHIN0_SRC);
- bb_i2s->dam_ch_refcount--;
- if (!bb_i2s->dam_ch_refcount)
- tegra30_dam_free_controller(bb_i2s->dam_ifc);
return 0;
}
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