--- /dev/null
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// tegra210_peq.c - Tegra210 PEQ driver
+//
+// Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "tegra210_ope.h"
+#include "tegra210_peq.h"
+
+static const struct reg_default tegra210_peq_reg_defaults[] = {
+ { TEGRA210_PEQ_CFG, 0x00000013},
+ { TEGRA210_PEQ_CFG_RAM_CTRL, 0x00004000},
+ { TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL, 0x00004000},
+};
+
+static const u32 biquad_init_gains[TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH] = {
+ 1495012349, /* Pre-gain */
+
+ /* Gains : b0, b1, a0, a1, a2 */
+ 536870912, -1073741824, 536870912, 2143508246, -1069773768, /* Band-0 */
+ 134217728, -265414508, 131766272, 2140402222, -1071252997, /* Band-1 */
+ 268435456, -233515765, -33935948, 1839817267, -773826124, /* Band-2 */
+ 536870912, -672537913, 139851540, 1886437554, -824433167, /* Band-3 */
+ 268435456, -114439279, 173723964, 205743566, 278809729, /* Band-4 */
+ 1, 0, 0, 0, 0, /* Band-5 */
+ 1, 0, 0, 0, 0, /* Band-6 */
+ 1, 0, 0, 0, 0, /* Band-7 */
+ 1, 0, 0, 0, 0, /* Band-8 */
+ 1, 0, 0, 0, 0, /* Band-9 */
+ 1, 0, 0, 0, 0, /* Band-10 */
+ 1, 0, 0, 0, 0, /* Band-11 */
+
+ 963423114, /* Post-gain */
+};
+
+static const u32 biquad_init_shifts[TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH] = {
+ 23, /* Pre-shift */
+ 30, 30, 30, 30, 30, 0, 0, 0, 0, 0, 0, 0, /* Shift for bands */
+ 28, /* Post-shift */
+};
+
+static s32 biquad_coeff_buffer[TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH];
+
+static void tegra210_peq_read_ram(struct regmap *regmap, unsigned int reg_ctrl,
+ unsigned int reg_data, unsigned int ram_offset,
+ unsigned int *data, size_t size)
+{
+ unsigned int val;
+ unsigned int i;
+
+ val = ram_offset & TEGRA210_PEQ_RAM_CTRL_RAM_ADDR_MASK;
+ val |= TEGRA210_PEQ_RAM_CTRL_ADDR_INIT_EN;
+ val |= TEGRA210_PEQ_RAM_CTRL_SEQ_ACCESS_EN;
+ val |= TEGRA210_PEQ_RAM_CTRL_RW_READ;
+
+ regmap_write(regmap, reg_ctrl, val);
+
+ /*
+ * Since all ahub non-io modules work under same ahub clock it is not
+ * necessary to check ahub read busy bit after every read.
+ */
+ for (i = 0; i < size; i++)
+ regmap_read(regmap, reg_data, &data[i]);
+}
+
+static void tegra210_peq_write_ram(struct regmap *regmap, unsigned int reg_ctrl,
+ unsigned int reg_data, unsigned int ram_offset,
+ unsigned int *data, size_t size)
+{
+ unsigned int val;
+ unsigned int i;
+
+ val = ram_offset & TEGRA210_PEQ_RAM_CTRL_RAM_ADDR_MASK;
+ val |= TEGRA210_PEQ_RAM_CTRL_ADDR_INIT_EN;
+ val |= TEGRA210_PEQ_RAM_CTRL_SEQ_ACCESS_EN;
+ val |= TEGRA210_PEQ_RAM_CTRL_RW_WRITE;
+
+ regmap_write(regmap, reg_ctrl, val);
+
+ for (i = 0; i < size; i++)
+ regmap_write(regmap, reg_data, data[i]);
+}
+
+static int tegra210_peq_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+ unsigned int mask = (1 << fls(mc->max)) - 1;
+ unsigned int val;
+
+ regmap_read(ope->peq_regmap, mc->reg, &val);
+
+ ucontrol->value.integer.value[0] = (val >> mc->shift) & mask;
+
+ if (!mc->invert)
+ return 0;
+
+ ucontrol->value.integer.value[0] =
+ mc->max - ucontrol->value.integer.value[0];
+
+ return 0;
+}
+
+static int tegra210_peq_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct soc_mixer_control *mc =
+ (struct soc_mixer_control *)kcontrol->private_value;
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+ unsigned int mask = (1 << fls(mc->max)) - 1;
+ bool change = false;
+ unsigned int val;
+
+ val = (ucontrol->value.integer.value[0] & mask);
+
+ if (mc->invert)
+ val = mc->max - val;
+
+ val = val << mc->shift;
+
+ regmap_update_bits_check(ope->peq_regmap, mc->reg, (mask << mc->shift),
+ val, &change);
+
+ return change ? 1 : 0;
+}
+
+static int tegra210_peq_ram_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+ u32 i, reg_ctrl = params->soc.base;
+ u32 reg_data = reg_ctrl + cmpnt->val_bytes;
+ s32 *data = (s32 *)biquad_coeff_buffer;
+
+ pm_runtime_get_sync(cmpnt->dev);
+
+ tegra210_peq_read_ram(ope->peq_regmap, reg_ctrl, reg_data,
+ params->shift, data, params->soc.num_regs);
+
+ pm_runtime_put_sync(cmpnt->dev);
+
+ for (i = 0; i < params->soc.num_regs; i++)
+ ucontrol->value.integer.value[i] = (long)data[i];
+
+ return 0;
+}
+
+static int tegra210_peq_ram_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
+ struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+ struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+ u32 i, reg_ctrl = params->soc.base;
+ u32 reg_data = reg_ctrl + cmpnt->val_bytes;
+ s32 *data = (s32 *)biquad_coeff_buffer;
+
+ for (i = 0; i < params->soc.num_regs; i++)
+ data[i] = (s32)ucontrol->value.integer.value[i];
+
+ pm_runtime_get_sync(cmpnt->dev);
+
+ tegra210_peq_write_ram(ope->peq_regmap, reg_ctrl, reg_data,
+ params->shift, data, params->soc.num_regs);
+
+ pm_runtime_put_sync(cmpnt->dev);
+
+ return 1;
+}
+
+static int tegra210_peq_param_info(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_info *uinfo)
+{
+ struct soc_bytes *params = (void *)kcontrol->private_value;
+
+ uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+ uinfo->value.integer.min = INT_MIN;
+ uinfo->value.integer.max = INT_MAX;
+ uinfo->count = params->num_regs;
+
+ return 0;
+}
+
+#define TEGRA210_PEQ_GAIN_PARAMS_CTRL(chan) \
+ TEGRA_SOC_BYTES_EXT("PEQ Channel-" #chan " Biquad Gain Params", \
+ TEGRA210_PEQ_CFG_RAM_CTRL, \
+ TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH, \
+ (TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH * chan), 0xffffffff, \
+ tegra210_peq_ram_get, tegra210_peq_ram_put, \
+ tegra210_peq_param_info)
+
+#define TEGRA210_PEQ_SHIFT_PARAMS_CTRL(chan) \
+ TEGRA_SOC_BYTES_EXT("PEQ Channel-" #chan " Biquad Shift Params", \
+ TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL, \
+ TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH, \
+ (TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH * chan), 0x1f, \
+ tegra210_peq_ram_get, tegra210_peq_ram_put, \
+ tegra210_peq_param_info)
+
+static const struct snd_kcontrol_new tegra210_peq_controls[] = {
+ SOC_SINGLE_EXT("PEQ Active", TEGRA210_PEQ_CFG,
+ TEGRA210_PEQ_CFG_MODE_SHIFT, 1, 0,
+ tegra210_peq_get, tegra210_peq_put),
+
+ SOC_SINGLE_EXT("PEQ Biquad Stages", TEGRA210_PEQ_CFG,
+ TEGRA210_PEQ_CFG_BIQUAD_STAGES_SHIFT,
+ TEGRA210_PEQ_MAX_BIQUAD_STAGES - 1, 0,
+ tegra210_peq_get, tegra210_peq_put),
+
+ TEGRA210_PEQ_GAIN_PARAMS_CTRL(0),
+ TEGRA210_PEQ_GAIN_PARAMS_CTRL(1),
+ TEGRA210_PEQ_GAIN_PARAMS_CTRL(2),
+ TEGRA210_PEQ_GAIN_PARAMS_CTRL(3),
+ TEGRA210_PEQ_GAIN_PARAMS_CTRL(4),
+ TEGRA210_PEQ_GAIN_PARAMS_CTRL(5),
+ TEGRA210_PEQ_GAIN_PARAMS_CTRL(6),
+ TEGRA210_PEQ_GAIN_PARAMS_CTRL(7),
+
+ TEGRA210_PEQ_SHIFT_PARAMS_CTRL(0),
+ TEGRA210_PEQ_SHIFT_PARAMS_CTRL(1),
+ TEGRA210_PEQ_SHIFT_PARAMS_CTRL(2),
+ TEGRA210_PEQ_SHIFT_PARAMS_CTRL(3),
+ TEGRA210_PEQ_SHIFT_PARAMS_CTRL(4),
+ TEGRA210_PEQ_SHIFT_PARAMS_CTRL(5),
+ TEGRA210_PEQ_SHIFT_PARAMS_CTRL(6),
+ TEGRA210_PEQ_SHIFT_PARAMS_CTRL(7),
+};
+
+static bool tegra210_peq_wr_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TEGRA210_PEQ_SOFT_RESET:
+ case TEGRA210_PEQ_CG:
+ case TEGRA210_PEQ_CFG ... TEGRA210_PEQ_CFG_RAM_SHIFT_DATA:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool tegra210_peq_rd_reg(struct device *dev, unsigned int reg)
+{
+ if (tegra210_peq_wr_reg(dev, reg))
+ return true;
+
+ switch (reg) {
+ case TEGRA210_PEQ_STATUS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool tegra210_peq_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TEGRA210_PEQ_SOFT_RESET:
+ case TEGRA210_PEQ_STATUS:
+ case TEGRA210_PEQ_CFG_RAM_CTRL ... TEGRA210_PEQ_CFG_RAM_SHIFT_DATA:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool tegra210_peq_precious_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case TEGRA210_PEQ_CFG_RAM_DATA:
+ case TEGRA210_PEQ_CFG_RAM_SHIFT_DATA:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const struct regmap_config tegra210_peq_regmap_config = {
+ .name = "peq",
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
+ .writeable_reg = tegra210_peq_wr_reg,
+ .readable_reg = tegra210_peq_rd_reg,
+ .volatile_reg = tegra210_peq_volatile_reg,
+ .precious_reg = tegra210_peq_precious_reg,
+ .reg_defaults = tegra210_peq_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(tegra210_peq_reg_defaults),
+ .cache_type = REGCACHE_FLAT,
+};
+
+void tegra210_peq_restore(struct regmap *regmap, u32 *biquad_gains,
+ u32 *biquad_shifts)
+{
+ unsigned int i;
+
+ for (i = 0; i < TEGRA210_PEQ_MAX_CHANNELS; i++) {
+ tegra210_peq_write_ram(regmap, TEGRA210_PEQ_CFG_RAM_CTRL,
+ TEGRA210_PEQ_CFG_RAM_DATA,
+ (i * TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH),
+ biquad_gains,
+ TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH);
+
+ tegra210_peq_write_ram(regmap,
+ TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL,
+ TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
+ (i * TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH),
+ biquad_shifts,
+ TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH);
+
+ }
+}
+
+void tegra210_peq_save(struct regmap *regmap, u32 *biquad_gains,
+ u32 *biquad_shifts)
+{
+ unsigned int i;
+
+ for (i = 0; i < TEGRA210_PEQ_MAX_CHANNELS; i++) {
+ tegra210_peq_read_ram(regmap,
+ TEGRA210_PEQ_CFG_RAM_CTRL,
+ TEGRA210_PEQ_CFG_RAM_DATA,
+ (i * TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH),
+ biquad_gains,
+ TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH);
+
+ tegra210_peq_read_ram(regmap,
+ TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL,
+ TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
+ (i * TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH),
+ biquad_shifts,
+ TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH);
+ }
+}
+
+int tegra210_peq_component_init(struct snd_soc_component *cmpnt)
+{
+ struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+ unsigned int i;
+
+ pm_runtime_get_sync(cmpnt->dev);
+ regmap_update_bits(ope->peq_regmap, TEGRA210_PEQ_CFG,
+ TEGRA210_PEQ_CFG_MODE_MASK,
+ 0 << TEGRA210_PEQ_CFG_MODE_SHIFT);
+ regmap_update_bits(ope->peq_regmap, TEGRA210_PEQ_CFG,
+ TEGRA210_PEQ_CFG_BIQUAD_STAGES_MASK,
+ (TEGRA210_PEQ_BIQUAD_INIT_STAGE - 1) <<
+ TEGRA210_PEQ_CFG_BIQUAD_STAGES_SHIFT);
+
+ /* Initialize PEQ AHUB RAM with default params */
+ for (i = 0; i < TEGRA210_PEQ_MAX_CHANNELS; i++) {
+
+ /* Set default gain params */
+ tegra210_peq_write_ram(ope->peq_regmap,
+ TEGRA210_PEQ_CFG_RAM_CTRL,
+ TEGRA210_PEQ_CFG_RAM_DATA,
+ (i * TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH),
+ (u32 *)&biquad_init_gains,
+ TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH);
+
+ /* Set default shift params */
+ tegra210_peq_write_ram(ope->peq_regmap,
+ TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL,
+ TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
+ (i * TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH),
+ (u32 *)&biquad_init_shifts,
+ TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH);
+
+ }
+
+ pm_runtime_put_sync(cmpnt->dev);
+
+ snd_soc_add_component_controls(cmpnt, tegra210_peq_controls,
+ ARRAY_SIZE(tegra210_peq_controls));
+
+ return 0;
+}
+
+int tegra210_peq_regmap_init(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct tegra210_ope *ope = dev_get_drvdata(dev);
+ struct device_node *child;
+ struct resource mem;
+ void __iomem *regs;
+ int err;
+
+ child = of_get_child_by_name(dev->of_node, "equalizer");
+ if (!child)
+ return -ENODEV;
+
+ err = of_address_to_resource(child, 0, &mem);
+ of_node_put(child);
+ if (err < 0) {
+ dev_err(dev, "fail to get PEQ resource\n");
+ return err;
+ }
+
+ mem.flags = IORESOURCE_MEM;
+ regs = devm_ioremap_resource(dev, &mem);
+ if (IS_ERR(regs))
+ return PTR_ERR(regs);
+ ope->peq_regmap = devm_regmap_init_mmio(dev, regs,
+ &tegra210_peq_regmap_config);
+ if (IS_ERR(ope->peq_regmap)) {
+ dev_err(dev, "regmap init failed\n");
+ return PTR_ERR(ope->peq_regmap);
+ }
+
+ regcache_cache_only(ope->peq_regmap, true);
+
+ return 0;
+}
git.samba.org / sfrench / cifs-2.6.git / blobdiff