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linux/sound/soc/tegra/tegra30_ahub.c
Arnd Bergmann ccd4cc3ed0
ASoC: tegra: mark runtime-pm functions as __maybe_unused 
A reorganization of the driver source led to two of them causing
a compile time warning in some configurations:

tegra/tegra20_spdif.c:36:12: error: 'tegra20_spdif_runtime_resume' defined but not used [-Werror=unused-function]
   36 | static int tegra20_spdif_runtime_resume(struct device *dev)
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
tegra/tegra20_spdif.c:27:12: error: 'tegra20_spdif_runtime_suspend' defined but not used [-Werror=unused-function]
   27 | static int tegra20_spdif_runtime_suspend(struct device *dev)
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tegra/tegra30_ahub.c:64:12: error: 'tegra30_ahub_runtime_resume' defined but not used [-Werror=unused-function]
   64 | static int tegra30_ahub_runtime_resume(struct device *dev)
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
tegra/tegra30_ahub.c:43:12: error: 'tegra30_ahub_runtime_suspend' defined but not used [-Werror=unused-function]
   43 | static int tegra30_ahub_runtime_suspend(struct device *dev)
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Mark these functions as __maybe_unused to avoid this kind of warning.

Fixes: b5571449e6 ("ASoC: tegra30: ahub: Remove handing of disabled runtime PM")
Fixes: c53b396f0d ("ASoC: tegra20: spdif: Remove handing of disabled runtime PM")
Fixes: 80ec4a4cb3 ("ASoC: tegra20: i2s: Remove handing of disabled runtime PM")
Fixes: b5f6f781fc ("ASoC: tegra30: i2s: Remove handing of disabled runtime PM")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210422133418.1757893-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
2021-04-22 16:27:37 +01:00

694 lines
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// SPDX-License-Identifier: GPL-2.0-only
/*
* tegra30_ahub.c - Tegra30 AHUB driver
*
* Copyright (c) 2011,2012, NVIDIA CORPORATION. All rights reserved.
*/
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <sound/soc.h>
#include "tegra30_ahub.h"
#define DRV_NAME "tegra30-ahub"
static struct tegra30_ahub *ahub;
static inline void tegra30_apbif_write(u32 reg, u32 val)
{
regmap_write(ahub->regmap_apbif, reg, val);
}
static inline u32 tegra30_apbif_read(u32 reg)
{
u32 val;
regmap_read(ahub->regmap_apbif, reg, &val);
return val;
}
static inline void tegra30_audio_write(u32 reg, u32 val)
{
regmap_write(ahub->regmap_ahub, reg, val);
}
static __maybe_unused int tegra30_ahub_runtime_suspend(struct device *dev)
{
regcache_cache_only(ahub->regmap_apbif, true);
regcache_cache_only(ahub->regmap_ahub, true);
clk_bulk_disable_unprepare(ahub->nclocks, ahub->clocks);
return 0;
}
/*
* clk_apbif isn't required for an I2S<->I2S configuration where no PCM data
* is read from or sent to memory. However, that's not something the rest of
* the driver supports right now, so we'll just treat the two clocks as one
* for now.
*
* These functions should not be a plain ref-count. Instead, each active stream
* contributes some requirement to the minimum clock rate, so starting or
* stopping streams should dynamically adjust the clock as required. However,
* this is not yet implemented.
*/
static __maybe_unused int tegra30_ahub_runtime_resume(struct device *dev)
{
int ret;
ret = reset_control_bulk_assert(ahub->nresets, ahub->resets);
if (ret)
return ret;
ret = clk_bulk_prepare_enable(ahub->nclocks, ahub->clocks);
if (ret)
return ret;
usleep_range(10, 100);
ret = reset_control_bulk_deassert(ahub->nresets, ahub->resets);
if (ret)
goto disable_clocks;
regcache_cache_only(ahub->regmap_apbif, false);
regcache_cache_only(ahub->regmap_ahub, false);
regcache_mark_dirty(ahub->regmap_apbif);
regcache_mark_dirty(ahub->regmap_ahub);
ret = regcache_sync(ahub->regmap_apbif);
if (ret)
goto disable_clocks;
ret = regcache_sync(ahub->regmap_ahub);
if (ret)
goto disable_clocks;
return 0;
disable_clocks:
clk_bulk_disable_unprepare(ahub->nclocks, ahub->clocks);
return ret;
}
int tegra30_ahub_allocate_rx_fifo(enum tegra30_ahub_rxcif *rxcif,
char *dmachan, int dmachan_len,
dma_addr_t *fiforeg)
{
int channel;
u32 reg, val;
struct tegra30_ahub_cif_conf cif_conf;
channel = find_first_zero_bit(ahub->rx_usage,
TEGRA30_AHUB_CHANNEL_CTRL_COUNT);
if (channel >= TEGRA30_AHUB_CHANNEL_CTRL_COUNT)
return -EBUSY;
__set_bit(channel, ahub->rx_usage);
*rxcif = TEGRA30_AHUB_RXCIF_APBIF_RX0 + channel;
snprintf(dmachan, dmachan_len, "rx%d", channel);
*fiforeg = ahub->apbif_addr + TEGRA30_AHUB_CHANNEL_RXFIFO +
(channel * TEGRA30_AHUB_CHANNEL_RXFIFO_STRIDE);
pm_runtime_get_sync(ahub->dev);
reg = TEGRA30_AHUB_CHANNEL_CTRL +
(channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
val = tegra30_apbif_read(reg);
val &= ~(TEGRA30_AHUB_CHANNEL_CTRL_RX_THRESHOLD_MASK |
TEGRA30_AHUB_CHANNEL_CTRL_RX_PACK_MASK);
val |= (7 << TEGRA30_AHUB_CHANNEL_CTRL_RX_THRESHOLD_SHIFT) |
TEGRA30_AHUB_CHANNEL_CTRL_RX_PACK_EN |
TEGRA30_AHUB_CHANNEL_CTRL_RX_PACK_16;
tegra30_apbif_write(reg, val);
cif_conf.threshold = 0;
cif_conf.audio_channels = 2;
cif_conf.client_channels = 2;
cif_conf.audio_bits = TEGRA30_AUDIOCIF_BITS_16;
cif_conf.client_bits = TEGRA30_AUDIOCIF_BITS_16;
cif_conf.expand = 0;
cif_conf.stereo_conv = 0;
cif_conf.replicate = 0;
cif_conf.direction = TEGRA30_AUDIOCIF_DIRECTION_RX;
cif_conf.truncate = 0;
cif_conf.mono_conv = 0;
reg = TEGRA30_AHUB_CIF_RX_CTRL +
(channel * TEGRA30_AHUB_CIF_RX_CTRL_STRIDE);
ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, &cif_conf);
pm_runtime_put(ahub->dev);
return 0;
}
EXPORT_SYMBOL_GPL(tegra30_ahub_allocate_rx_fifo);
int tegra30_ahub_enable_rx_fifo(enum tegra30_ahub_rxcif rxcif)
{
int channel = rxcif - TEGRA30_AHUB_RXCIF_APBIF_RX0;
int reg, val;
pm_runtime_get_sync(ahub->dev);
reg = TEGRA30_AHUB_CHANNEL_CTRL +
(channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
val = tegra30_apbif_read(reg);
val |= TEGRA30_AHUB_CHANNEL_CTRL_RX_EN;
tegra30_apbif_write(reg, val);
pm_runtime_put(ahub->dev);
return 0;
}
EXPORT_SYMBOL_GPL(tegra30_ahub_enable_rx_fifo);
int tegra30_ahub_disable_rx_fifo(enum tegra30_ahub_rxcif rxcif)
{
int channel = rxcif - TEGRA30_AHUB_RXCIF_APBIF_RX0;
int reg, val;
pm_runtime_get_sync(ahub->dev);
reg = TEGRA30_AHUB_CHANNEL_CTRL +
(channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
val = tegra30_apbif_read(reg);
val &= ~TEGRA30_AHUB_CHANNEL_CTRL_RX_EN;
tegra30_apbif_write(reg, val);
pm_runtime_put(ahub->dev);
return 0;
}
EXPORT_SYMBOL_GPL(tegra30_ahub_disable_rx_fifo);
int tegra30_ahub_free_rx_fifo(enum tegra30_ahub_rxcif rxcif)
{
int channel = rxcif - TEGRA30_AHUB_RXCIF_APBIF_RX0;
__clear_bit(channel, ahub->rx_usage);
return 0;
}
EXPORT_SYMBOL_GPL(tegra30_ahub_free_rx_fifo);
int tegra30_ahub_allocate_tx_fifo(enum tegra30_ahub_txcif *txcif,
char *dmachan, int dmachan_len,
dma_addr_t *fiforeg)
{
int channel;
u32 reg, val;
struct tegra30_ahub_cif_conf cif_conf;
channel = find_first_zero_bit(ahub->tx_usage,
TEGRA30_AHUB_CHANNEL_CTRL_COUNT);
if (channel >= TEGRA30_AHUB_CHANNEL_CTRL_COUNT)
return -EBUSY;
__set_bit(channel, ahub->tx_usage);
*txcif = TEGRA30_AHUB_TXCIF_APBIF_TX0 + channel;
snprintf(dmachan, dmachan_len, "tx%d", channel);
*fiforeg = ahub->apbif_addr + TEGRA30_AHUB_CHANNEL_TXFIFO +
(channel * TEGRA30_AHUB_CHANNEL_TXFIFO_STRIDE);
pm_runtime_get_sync(ahub->dev);
reg = TEGRA30_AHUB_CHANNEL_CTRL +
(channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
val = tegra30_apbif_read(reg);
val &= ~(TEGRA30_AHUB_CHANNEL_CTRL_TX_THRESHOLD_MASK |
TEGRA30_AHUB_CHANNEL_CTRL_TX_PACK_MASK);
val |= (7 << TEGRA30_AHUB_CHANNEL_CTRL_TX_THRESHOLD_SHIFT) |
TEGRA30_AHUB_CHANNEL_CTRL_TX_PACK_EN |
TEGRA30_AHUB_CHANNEL_CTRL_TX_PACK_16;
tegra30_apbif_write(reg, val);
cif_conf.threshold = 0;
cif_conf.audio_channels = 2;
cif_conf.client_channels = 2;
cif_conf.audio_bits = TEGRA30_AUDIOCIF_BITS_16;
cif_conf.client_bits = TEGRA30_AUDIOCIF_BITS_16;
cif_conf.expand = 0;
cif_conf.stereo_conv = 0;
cif_conf.replicate = 0;
cif_conf.direction = TEGRA30_AUDIOCIF_DIRECTION_TX;
cif_conf.truncate = 0;
cif_conf.mono_conv = 0;
reg = TEGRA30_AHUB_CIF_TX_CTRL +
(channel * TEGRA30_AHUB_CIF_TX_CTRL_STRIDE);
ahub->soc_data->set_audio_cif(ahub->regmap_apbif, reg, &cif_conf);
pm_runtime_put(ahub->dev);
return 0;
}
EXPORT_SYMBOL_GPL(tegra30_ahub_allocate_tx_fifo);
int tegra30_ahub_enable_tx_fifo(enum tegra30_ahub_txcif txcif)
{
int channel = txcif - TEGRA30_AHUB_TXCIF_APBIF_TX0;
int reg, val;
pm_runtime_get_sync(ahub->dev);
reg = TEGRA30_AHUB_CHANNEL_CTRL +
(channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
val = tegra30_apbif_read(reg);
val |= TEGRA30_AHUB_CHANNEL_CTRL_TX_EN;
tegra30_apbif_write(reg, val);
pm_runtime_put(ahub->dev);
return 0;
}
EXPORT_SYMBOL_GPL(tegra30_ahub_enable_tx_fifo);
int tegra30_ahub_disable_tx_fifo(enum tegra30_ahub_txcif txcif)
{
int channel = txcif - TEGRA30_AHUB_TXCIF_APBIF_TX0;
int reg, val;
pm_runtime_get_sync(ahub->dev);
reg = TEGRA30_AHUB_CHANNEL_CTRL +
(channel * TEGRA30_AHUB_CHANNEL_CTRL_STRIDE);
val = tegra30_apbif_read(reg);
val &= ~TEGRA30_AHUB_CHANNEL_CTRL_TX_EN;
tegra30_apbif_write(reg, val);
pm_runtime_put(ahub->dev);
return 0;
}
EXPORT_SYMBOL_GPL(tegra30_ahub_disable_tx_fifo);
int tegra30_ahub_free_tx_fifo(enum tegra30_ahub_txcif txcif)
{
int channel = txcif - TEGRA30_AHUB_TXCIF_APBIF_TX0;
__clear_bit(channel, ahub->tx_usage);
return 0;
}
EXPORT_SYMBOL_GPL(tegra30_ahub_free_tx_fifo);
int tegra30_ahub_set_rx_cif_source(enum tegra30_ahub_rxcif rxcif,
enum tegra30_ahub_txcif txcif)
{
int channel = rxcif - TEGRA30_AHUB_RXCIF_APBIF_RX0;
int reg;
pm_runtime_get_sync(ahub->dev);
reg = TEGRA30_AHUB_AUDIO_RX +
(channel * TEGRA30_AHUB_AUDIO_RX_STRIDE);
tegra30_audio_write(reg, 1 << txcif);
pm_runtime_put(ahub->dev);
return 0;
}
EXPORT_SYMBOL_GPL(tegra30_ahub_set_rx_cif_source);
int tegra30_ahub_unset_rx_cif_source(enum tegra30_ahub_rxcif rxcif)
{
int channel = rxcif - TEGRA30_AHUB_RXCIF_APBIF_RX0;
int reg;
pm_runtime_get_sync(ahub->dev);
reg = TEGRA30_AHUB_AUDIO_RX +
(channel * TEGRA30_AHUB_AUDIO_RX_STRIDE);
tegra30_audio_write(reg, 0);
pm_runtime_put(ahub->dev);
return 0;
}
EXPORT_SYMBOL_GPL(tegra30_ahub_unset_rx_cif_source);
static const struct reset_control_bulk_data tegra30_ahub_resets_data[] = {
{ "d_audio" },
{ "apbif" },
{ "i2s0" },
{ "i2s1" },
{ "i2s2" },
{ "i2s3" },
{ "i2s4" },
{ "dam0" },
{ "dam1" },
{ "dam2" },
{ "spdif" },
{ "amx" }, /* Tegra114+ */
{ "adx" }, /* Tegra114+ */
{ "amx1" }, /* Tegra124 */
{ "adx1" }, /* Tegra124 */
{ "afc0" }, /* Tegra124 */
{ "afc1" }, /* Tegra124 */
{ "afc2" }, /* Tegra124 */
{ "afc3" }, /* Tegra124 */
{ "afc4" }, /* Tegra124 */
{ "afc5" }, /* Tegra124 */
};
#define LAST_REG(name) \
(TEGRA30_AHUB_##name + \
(TEGRA30_AHUB_##name##_STRIDE * TEGRA30_AHUB_##name##_COUNT) - 4)
#define REG_IN_ARRAY(reg, name) \
((reg >= TEGRA30_AHUB_##name) && \
(reg <= LAST_REG(name) && \
(!((reg - TEGRA30_AHUB_##name) % TEGRA30_AHUB_##name##_STRIDE))))
static bool tegra30_ahub_apbif_wr_rd_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case TEGRA30_AHUB_CONFIG_LINK_CTRL:
case TEGRA30_AHUB_MISC_CTRL:
case TEGRA30_AHUB_APBDMA_LIVE_STATUS:
case TEGRA30_AHUB_I2S_LIVE_STATUS:
case TEGRA30_AHUB_SPDIF_LIVE_STATUS:
case TEGRA30_AHUB_I2S_INT_MASK:
case TEGRA30_AHUB_DAM_INT_MASK:
case TEGRA30_AHUB_SPDIF_INT_MASK:
case TEGRA30_AHUB_APBIF_INT_MASK:
case TEGRA30_AHUB_I2S_INT_STATUS:
case TEGRA30_AHUB_DAM_INT_STATUS:
case TEGRA30_AHUB_SPDIF_INT_STATUS:
case TEGRA30_AHUB_APBIF_INT_STATUS:
case TEGRA30_AHUB_I2S_INT_SOURCE:
case TEGRA30_AHUB_DAM_INT_SOURCE:
case TEGRA30_AHUB_SPDIF_INT_SOURCE:
case TEGRA30_AHUB_APBIF_INT_SOURCE:
case TEGRA30_AHUB_I2S_INT_SET:
case TEGRA30_AHUB_DAM_INT_SET:
case TEGRA30_AHUB_SPDIF_INT_SET:
case TEGRA30_AHUB_APBIF_INT_SET:
return true;
default:
break;
}
if (REG_IN_ARRAY(reg, CHANNEL_CTRL) ||
REG_IN_ARRAY(reg, CHANNEL_CLEAR) ||
REG_IN_ARRAY(reg, CHANNEL_STATUS) ||
REG_IN_ARRAY(reg, CHANNEL_TXFIFO) ||
REG_IN_ARRAY(reg, CHANNEL_RXFIFO) ||
REG_IN_ARRAY(reg, CIF_TX_CTRL) ||
REG_IN_ARRAY(reg, CIF_RX_CTRL) ||
REG_IN_ARRAY(reg, DAM_LIVE_STATUS))
return true;
return false;
}
static bool tegra30_ahub_apbif_volatile_reg(struct device *dev,
unsigned int reg)
{
switch (reg) {
case TEGRA30_AHUB_CONFIG_LINK_CTRL:
case TEGRA30_AHUB_MISC_CTRL:
case TEGRA30_AHUB_APBDMA_LIVE_STATUS:
case TEGRA30_AHUB_I2S_LIVE_STATUS:
case TEGRA30_AHUB_SPDIF_LIVE_STATUS:
case TEGRA30_AHUB_I2S_INT_STATUS:
case TEGRA30_AHUB_DAM_INT_STATUS:
case TEGRA30_AHUB_SPDIF_INT_STATUS:
case TEGRA30_AHUB_APBIF_INT_STATUS:
case TEGRA30_AHUB_I2S_INT_SET:
case TEGRA30_AHUB_DAM_INT_SET:
case TEGRA30_AHUB_SPDIF_INT_SET:
case TEGRA30_AHUB_APBIF_INT_SET:
return true;
default:
break;
}
if (REG_IN_ARRAY(reg, CHANNEL_CLEAR) ||
REG_IN_ARRAY(reg, CHANNEL_STATUS) ||
REG_IN_ARRAY(reg, CHANNEL_TXFIFO) ||
REG_IN_ARRAY(reg, CHANNEL_RXFIFO) ||
REG_IN_ARRAY(reg, DAM_LIVE_STATUS))
return true;
return false;
}
static bool tegra30_ahub_apbif_precious_reg(struct device *dev,
unsigned int reg)
{
if (REG_IN_ARRAY(reg, CHANNEL_TXFIFO) ||
REG_IN_ARRAY(reg, CHANNEL_RXFIFO))
return true;
return false;
}
static const struct regmap_config tegra30_ahub_apbif_regmap_config = {
.name = "apbif",
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.max_register = TEGRA30_AHUB_APBIF_INT_SET,
.writeable_reg = tegra30_ahub_apbif_wr_rd_reg,
.readable_reg = tegra30_ahub_apbif_wr_rd_reg,
.volatile_reg = tegra30_ahub_apbif_volatile_reg,
.precious_reg = tegra30_ahub_apbif_precious_reg,
.cache_type = REGCACHE_FLAT,
};
static bool tegra30_ahub_ahub_wr_rd_reg(struct device *dev, unsigned int reg)
{
if (REG_IN_ARRAY(reg, AUDIO_RX))
return true;
return false;
}
static const struct regmap_config tegra30_ahub_ahub_regmap_config = {
.name = "ahub",
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.max_register = LAST_REG(AUDIO_RX),
.writeable_reg = tegra30_ahub_ahub_wr_rd_reg,
.readable_reg = tegra30_ahub_ahub_wr_rd_reg,
.cache_type = REGCACHE_FLAT,
};
static struct tegra30_ahub_soc_data soc_data_tegra30 = {
.num_resets = 11,
.set_audio_cif = tegra30_ahub_set_cif,
};
static struct tegra30_ahub_soc_data soc_data_tegra114 = {
.num_resets = 13,
.set_audio_cif = tegra30_ahub_set_cif,
};
static struct tegra30_ahub_soc_data soc_data_tegra124 = {
.num_resets = 21,
.set_audio_cif = tegra124_ahub_set_cif,
};
static const struct of_device_id tegra30_ahub_of_match[] = {
{ .compatible = "nvidia,tegra124-ahub", .data = &soc_data_tegra124 },
{ .compatible = "nvidia,tegra114-ahub", .data = &soc_data_tegra114 },
{ .compatible = "nvidia,tegra30-ahub", .data = &soc_data_tegra30 },
{},
};
static int tegra30_ahub_probe(struct platform_device *pdev)
{
const struct of_device_id *match;
const struct tegra30_ahub_soc_data *soc_data;
struct resource *res0;
void __iomem *regs_apbif, *regs_ahub;
int ret = 0;
match = of_match_device(tegra30_ahub_of_match, &pdev->dev);
if (!match)
return -EINVAL;
soc_data = match->data;
ahub = devm_kzalloc(&pdev->dev, sizeof(struct tegra30_ahub),
GFP_KERNEL);
if (!ahub)
return -ENOMEM;
dev_set_drvdata(&pdev->dev, ahub);
BUILD_BUG_ON(sizeof(ahub->resets) != sizeof(tegra30_ahub_resets_data));
memcpy(ahub->resets, tegra30_ahub_resets_data, sizeof(ahub->resets));
ahub->nresets = soc_data->num_resets;
ahub->soc_data = soc_data;
ahub->dev = &pdev->dev;
ahub->clocks[ahub->nclocks++].id = "apbif";
ahub->clocks[ahub->nclocks++].id = "d_audio";
ret = devm_clk_bulk_get(&pdev->dev, ahub->nclocks, ahub->clocks);
if (ret)
goto err_unset_ahub;
ret = devm_reset_control_bulk_get_exclusive(&pdev->dev, ahub->nresets,
ahub->resets);
if (ret) {
dev_err(&pdev->dev, "Can't get resets: %d\n", ret);
goto err_unset_ahub;
}
res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
regs_apbif = devm_ioremap_resource(&pdev->dev, res0);
if (IS_ERR(regs_apbif)) {
ret = PTR_ERR(regs_apbif);
goto err_unset_ahub;
}
ahub->apbif_addr = res0->start;
ahub->regmap_apbif = devm_regmap_init_mmio(&pdev->dev, regs_apbif,
&tegra30_ahub_apbif_regmap_config);
if (IS_ERR(ahub->regmap_apbif)) {
dev_err(&pdev->dev, "apbif regmap init failed\n");
ret = PTR_ERR(ahub->regmap_apbif);
goto err_unset_ahub;
}
regcache_cache_only(ahub->regmap_apbif, true);
regs_ahub = devm_platform_ioremap_resource(pdev, 1);
if (IS_ERR(regs_ahub)) {
ret = PTR_ERR(regs_ahub);
goto err_unset_ahub;
}
ahub->regmap_ahub = devm_regmap_init_mmio(&pdev->dev, regs_ahub,
&tegra30_ahub_ahub_regmap_config);
if (IS_ERR(ahub->regmap_ahub)) {
dev_err(&pdev->dev, "ahub regmap init failed\n");
ret = PTR_ERR(ahub->regmap_ahub);
goto err_unset_ahub;
}
regcache_cache_only(ahub->regmap_ahub, true);
pm_runtime_enable(&pdev->dev);
of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
return 0;
err_unset_ahub:
ahub = NULL;
return ret;
}
static int tegra30_ahub_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
ahub = NULL;
return 0;
}
static const struct dev_pm_ops tegra30_ahub_pm_ops = {
SET_RUNTIME_PM_OPS(tegra30_ahub_runtime_suspend,
tegra30_ahub_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
static struct platform_driver tegra30_ahub_driver = {
.probe = tegra30_ahub_probe,
.remove = tegra30_ahub_remove,
.driver = {
.name = DRV_NAME,
.of_match_table = tegra30_ahub_of_match,
.pm = &tegra30_ahub_pm_ops,
},
};
module_platform_driver(tegra30_ahub_driver);
void tegra30_ahub_set_cif(struct regmap *regmap, unsigned int reg,
struct tegra30_ahub_cif_conf *conf)
{
unsigned int value;
value = (conf->threshold <<
TEGRA30_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT) |
((conf->audio_channels - 1) <<
TEGRA30_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT) |
((conf->client_channels - 1) <<
TEGRA30_AUDIOCIF_CTRL_CLIENT_CHANNELS_SHIFT) |
(conf->audio_bits <<
TEGRA30_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT) |
(conf->client_bits <<
TEGRA30_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT) |
(conf->expand <<
TEGRA30_AUDIOCIF_CTRL_EXPAND_SHIFT) |
(conf->stereo_conv <<
TEGRA30_AUDIOCIF_CTRL_STEREO_CONV_SHIFT) |
(conf->replicate <<
TEGRA30_AUDIOCIF_CTRL_REPLICATE_SHIFT) |
(conf->direction <<
TEGRA30_AUDIOCIF_CTRL_DIRECTION_SHIFT) |
(conf->truncate <<
TEGRA30_AUDIOCIF_CTRL_TRUNCATE_SHIFT) |
(conf->mono_conv <<
TEGRA30_AUDIOCIF_CTRL_MONO_CONV_SHIFT);
regmap_write(regmap, reg, value);
}
EXPORT_SYMBOL_GPL(tegra30_ahub_set_cif);
void tegra124_ahub_set_cif(struct regmap *regmap, unsigned int reg,
struct tegra30_ahub_cif_conf *conf)
{
unsigned int value;
value = (conf->threshold <<
TEGRA124_AUDIOCIF_CTRL_FIFO_THRESHOLD_SHIFT) |
((conf->audio_channels - 1) <<
TEGRA124_AUDIOCIF_CTRL_AUDIO_CHANNELS_SHIFT) |
((conf->client_channels - 1) <<
TEGRA124_AUDIOCIF_CTRL_CLIENT_CHANNELS_SHIFT) |
(conf->audio_bits <<
TEGRA30_AUDIOCIF_CTRL_AUDIO_BITS_SHIFT) |
(conf->client_bits <<
TEGRA30_AUDIOCIF_CTRL_CLIENT_BITS_SHIFT) |
(conf->expand <<
TEGRA30_AUDIOCIF_CTRL_EXPAND_SHIFT) |
(conf->stereo_conv <<
TEGRA30_AUDIOCIF_CTRL_STEREO_CONV_SHIFT) |
(conf->replicate <<
TEGRA30_AUDIOCIF_CTRL_REPLICATE_SHIFT) |
(conf->direction <<
TEGRA30_AUDIOCIF_CTRL_DIRECTION_SHIFT) |
(conf->truncate <<
TEGRA30_AUDIOCIF_CTRL_TRUNCATE_SHIFT) |
(conf->mono_conv <<
TEGRA30_AUDIOCIF_CTRL_MONO_CONV_SHIFT);
regmap_write(regmap, reg, value);
}
EXPORT_SYMBOL_GPL(tegra124_ahub_set_cif);
MODULE_AUTHOR("Stephen Warren <swarren@nvidia.com>");
MODULE_DESCRIPTION("Tegra30 AHUB driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:" DRV_NAME);
MODULE_DEVICE_TABLE(of, tegra30_ahub_of_match);
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