[PATCH v4 5/5] ASoC: tegra: ahub: Switch to use reset-bulk API

11 Mar 2021

Switch to use reset-bulk API in order to make code cleaner.
Signed-off-by: Dmitry Osipenko digetx@gmail.com
---
 sound/soc/tegra/tegra30_ahub.c | 104 ++++++++++++---------------------
 sound/soc/tegra/tegra30_ahub.h |   5 +-
 sound/soc/tegra/tegra30_i2s.c  |   1 +
 3 files changed, 40 insertions(+), 70 deletions(-)

diff --git a/sound/soc/tegra/tegra30_ahub.c b/sound/soc/tegra/tegra30_ahub.c
index 9ef05ca4f6c4..d24c26f4960d 100644
--- a/sound/soc/tegra/tegra30_ahub.c
+++ b/sound/soc/tegra/tegra30_ahub.c
@@ -65,7 +65,7 @@ static int tegra30_ahub_runtime_resume(struct device *dev)
 {
    int ret;
-	ret = reset_control_assert(ahub->reset);
+	ret = reset_control_bulk_assert(ahub->nresets, ahub->resets);
    if (ret)
    	return ret;
@@ -75,7 +75,7 @@ static int tegra30_ahub_runtime_resume(struct device *dev)
usleep_range(10, 100);
-	ret = reset_control_deassert(ahub->reset);
+	ret = reset_control_bulk_deassert(ahub->nresets, ahub->resets);
    if (ret)
    	goto disable_clocks;
@@ -339,41 +339,28 @@ int tegra30_ahub_unset_rx_cif_source(enum tegra30_ahub_rxcif rxcif)
 }
 EXPORT_SYMBOL_GPL(tegra30_ahub_unset_rx_cif_source);
-#define MOD_LIST_MASK_TEGRA30	BIT(0)
-#define MOD_LIST_MASK_TEGRA114	BIT(1)
-#define MOD_LIST_MASK_TEGRA124	BIT(2)
-
-#define MOD_LIST_MASK_TEGRA30_OR_LATER \
-		(MOD_LIST_MASK_TEGRA30 | MOD_LIST_MASK_TEGRA114 | \
-			MOD_LIST_MASK_TEGRA124)
-#define MOD_LIST_MASK_TEGRA114_OR_LATER \
-		(MOD_LIST_MASK_TEGRA114 | MOD_LIST_MASK_TEGRA124)
-
-static const struct {
-	const char *rst_name;
-	u32 mod_list_mask;
-} configlink_mods[] = {
-	{ "d_audio", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "apbif", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "i2s0", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "i2s1", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "i2s2", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "i2s3", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "i2s4", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "dam0", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "dam1", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "dam2", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "spdif", MOD_LIST_MASK_TEGRA30_OR_LATER },
-	{ "amx", MOD_LIST_MASK_TEGRA114_OR_LATER },
-	{ "adx", MOD_LIST_MASK_TEGRA114_OR_LATER },
-	{ "amx1", MOD_LIST_MASK_TEGRA124 },
-	{ "adx1", MOD_LIST_MASK_TEGRA124 },
-	{ "afc0", MOD_LIST_MASK_TEGRA124 },
-	{ "afc1", MOD_LIST_MASK_TEGRA124 },
-	{ "afc2", MOD_LIST_MASK_TEGRA124 },
-	{ "afc3", MOD_LIST_MASK_TEGRA124 },
-	{ "afc4", MOD_LIST_MASK_TEGRA124 },
-	{ "afc5", MOD_LIST_MASK_TEGRA124 },
+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) \
@@ -502,17 +489,17 @@ static const struct regmap_config tegra30_ahub_ahub_regmap_config = {
 };
static struct tegra30_ahub_soc_data soc_data_tegra30 = {
-	.mod_list_mask = MOD_LIST_MASK_TEGRA30,
+	.num_resets = 11,
    .set_audio_cif = tegra30_ahub_set_cif,
 };
static struct tegra30_ahub_soc_data soc_data_tegra114 = {
-	.mod_list_mask = MOD_LIST_MASK_TEGRA114,
+	.num_resets = 13,
    .set_audio_cif = tegra30_ahub_set_cif,
 };
static struct tegra30_ahub_soc_data soc_data_tegra124 = {
-	.mod_list_mask = MOD_LIST_MASK_TEGRA124,
+	.num_resets = 21,
    .set_audio_cif = tegra124_ahub_set_cif,
 };
@@ -527,8 +514,6 @@ static int tegra30_ahub_probe(struct platform_device *pdev)
 {
    const struct of_device_id *match;
    const struct tegra30_ahub_soc_data *soc_data;
-	struct reset_control *rst;
-	int i;
    struct resource *res0;
    void __iomem *regs_apbif, *regs_ahub;
    int ret = 0;
@@ -541,34 +526,16 @@ static int tegra30_ahub_probe(struct platform_device *pdev)
    	return -EINVAL;
    soc_data = match->data;
-	/*
-	 * The AHUB hosts a register bus: the "configlink". For this to
-	 * operate correctly, all devices on this bus must be out of reset.
-	 */
-	for (i = 0; i < ARRAY_SIZE(configlink_mods); i++) {
-		if (!(configlink_mods[i].mod_list_mask &
-					soc_data->mod_list_mask))
-			continue;
-
-		rst = reset_control_get_exclusive(&pdev->dev,
-						  configlink_mods[i].rst_name);
-		if (IS_ERR(rst)) {
-			dev_err(&pdev->dev, "Can't get reset %s\n",
-				configlink_mods[i].rst_name);
-			ret = PTR_ERR(rst);
-			return ret;
-		}
-
-		/* just check presence of the reset control in DT */
-		reset_control_put(rst);
-	}
-
    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;
@@ -579,10 +546,11 @@ static int tegra30_ahub_probe(struct platform_device *pdev)
    if (ret)
    	return ret;
-	ahub->reset = devm_reset_control_array_get_exclusive(&pdev->dev);
-	if (IS_ERR(ahub->reset)) {
-		dev_err(&pdev->dev, "Can't get resets: %pe\n", ahub->reset);
-		return PTR_ERR(ahub->reset);
+	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);
+		return ret;
    }
res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
diff --git a/sound/soc/tegra/tegra30_ahub.h b/sound/soc/tegra/tegra30_ahub.h
index 3b85244f87f1..c9eaf4ec8f6e 100644
--- a/sound/soc/tegra/tegra30_ahub.h
+++ b/sound/soc/tegra/tegra30_ahub.h
@@ -491,7 +491,7 @@ void tegra124_ahub_set_cif(struct regmap *regmap, unsigned int reg,
    		   struct tegra30_ahub_cif_conf *conf);
struct tegra30_ahub_soc_data {
-	u32 mod_list_mask;
+	unsigned int num_resets;
    void (*set_audio_cif)(struct regmap *regmap,
    		      unsigned int reg,
    		      struct tegra30_ahub_cif_conf *conf);
@@ -511,7 +511,8 @@ struct tegra30_ahub_soc_data {
 struct tegra30_ahub {
    const struct tegra30_ahub_soc_data *soc_data;
    struct device *dev;
-	struct reset_control *reset;
+	struct reset_control_bulk_data resets[21];
+	unsigned int nresets;
    struct clk_bulk_data clocks[2];
    unsigned int nclocks;
    resource_size_t apbif_addr;
diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c
index 3d22c1be6f3d..614b67be1dd9 100644
--- a/sound/soc/tegra/tegra30_i2s.c
+++ b/sound/soc/tegra/tegra30_i2s.c
@@ -23,6 +23,7 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
+#include <linux/reset.h>
 #include <linux/slab.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
-- 
2.29.2


    