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authorChristian Pointner <equinox@helsinki.at>2024-05-10 18:52:23 (GMT)
committerChristian Pointner <equinox@helsinki.at>2024-05-10 18:52:23 (GMT)
commita641800acf13b5fb1463d4280c3ee7fc267143fb (patch)
tree248b647a682f71d9eb90d14d24081368ea905a42 /snd-alpx/core/generic/4.19/regmap-mmio.c
parentcc4badffe0e02d159c21eb90ea080a6a2f90cb4b (diff)
import whole driver package
Diffstat (limited to 'snd-alpx/core/generic/4.19/regmap-mmio.c')
-rw-r--r--snd-alpx/core/generic/4.19/regmap-mmio.c399
1 files changed, 0 insertions, 399 deletions
diff --git a/snd-alpx/core/generic/4.19/regmap-mmio.c b/snd-alpx/core/generic/4.19/regmap-mmio.c
deleted file mode 100644
index d524815..0000000
--- a/snd-alpx/core/generic/4.19/regmap-mmio.c
+++ /dev/null
@@ -1,399 +0,0 @@
-/*
- * Register map access API - MMIO support
- *
- * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope 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, see <http://www.gnu.org/licenses/>.
- */
-
-/* Simple patch to embed this file in its user module */
-/* DISABLE the EXPORT_SYMBOL() macros */
-#undef CONFIG_MODULES
-#include <linux/export.h>
-/* Then re-enable the module support to include modle.h */
-#define CONFIG_MODULES
-
-
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/module.h>
-#include <linux/regmap.h>
-#include <linux/slab.h>
-
-#include "internal.h"
-
-struct regmap_mmio_context {
- void __iomem *regs;
- unsigned val_bytes;
-
- bool attached_clk;
- struct clk *clk;
-
- void (*reg_write)(struct regmap_mmio_context *ctx,
- unsigned int reg, unsigned int val);
- unsigned int (*reg_read)(struct regmap_mmio_context *ctx,
- unsigned int reg);
-};
-
-static int regmap_mmio_regbits_check(size_t reg_bits)
-{
- switch (reg_bits) {
- case 8:
- case 16:
- case 32:
-#ifdef CONFIG_64BIT
- case 64:
-#endif
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-static int regmap_mmio_get_min_stride(size_t val_bits)
-{
- int min_stride;
-
- switch (val_bits) {
- case 8:
- /* The core treats 0 as 1 */
- min_stride = 0;
- return 0;
- case 16:
- min_stride = 2;
- break;
- case 32:
- min_stride = 4;
- break;
-#ifdef CONFIG_64BIT
- case 64:
- min_stride = 8;
- break;
-#endif
- default:
- return -EINVAL;
- }
-
- return min_stride;
-}
-
-static void regmap_mmio_write8(struct regmap_mmio_context *ctx,
- unsigned int reg,
- unsigned int val)
-{
- writeb(val, ctx->regs + reg);
-}
-
-static void regmap_mmio_write16le(struct regmap_mmio_context *ctx,
- unsigned int reg,
- unsigned int val)
-{
- writew(val, ctx->regs + reg);
-}
-
-static void regmap_mmio_write16be(struct regmap_mmio_context *ctx,
- unsigned int reg,
- unsigned int val)
-{
- iowrite16be(val, ctx->regs + reg);
-}
-
-static void regmap_mmio_write32le(struct regmap_mmio_context *ctx,
- unsigned int reg,
- unsigned int val)
-{
- writel(val, ctx->regs + reg);
-}
-
-static void regmap_mmio_write32be(struct regmap_mmio_context *ctx,
- unsigned int reg,
- unsigned int val)
-{
- iowrite32be(val, ctx->regs + reg);
-}
-
-#ifdef CONFIG_64BIT
-static void regmap_mmio_write64le(struct regmap_mmio_context *ctx,
- unsigned int reg,
- unsigned int val)
-{
- writeq(val, ctx->regs + reg);
-}
-#endif
-
-static int regmap_mmio_write(void *context, unsigned int reg, unsigned int val)
-{
- struct regmap_mmio_context *ctx = context;
- int ret;
-
- if (!IS_ERR(ctx->clk)) {
- ret = clk_enable(ctx->clk);
- if (ret < 0)
- return ret;
- }
-
- ctx->reg_write(ctx, reg, val);
-
- if (!IS_ERR(ctx->clk))
- clk_disable(ctx->clk);
-
- return 0;
-}
-
-static unsigned int regmap_mmio_read8(struct regmap_mmio_context *ctx,
- unsigned int reg)
-{
- return readb(ctx->regs + reg);
-}
-
-static unsigned int regmap_mmio_read16le(struct regmap_mmio_context *ctx,
- unsigned int reg)
-{
- return readw(ctx->regs + reg);
-}
-
-static unsigned int regmap_mmio_read16be(struct regmap_mmio_context *ctx,
- unsigned int reg)
-{
- return ioread16be(ctx->regs + reg);
-}
-
-static unsigned int regmap_mmio_read32le(struct regmap_mmio_context *ctx,
- unsigned int reg)
-{
- return readl(ctx->regs + reg);
-}
-
-static unsigned int regmap_mmio_read32be(struct regmap_mmio_context *ctx,
- unsigned int reg)
-{
- return ioread32be(ctx->regs + reg);
-}
-
-#ifdef CONFIG_64BIT
-static unsigned int regmap_mmio_read64le(struct regmap_mmio_context *ctx,
- unsigned int reg)
-{
- return readq(ctx->regs + reg);
-}
-#endif
-
-static int regmap_mmio_read(void *context, unsigned int reg, unsigned int *val)
-{
- struct regmap_mmio_context *ctx = context;
- int ret;
-
- if (!IS_ERR(ctx->clk)) {
- ret = clk_enable(ctx->clk);
- if (ret < 0)
- return ret;
- }
-
- *val = ctx->reg_read(ctx, reg);
-
- if (!IS_ERR(ctx->clk))
- clk_disable(ctx->clk);
-
- return 0;
-}
-
-static void regmap_mmio_free_context(void *context)
-{
- struct regmap_mmio_context *ctx = context;
-
- if (!IS_ERR(ctx->clk)) {
- clk_unprepare(ctx->clk);
- if (!ctx->attached_clk)
- clk_put(ctx->clk);
- }
- kfree(context);
-}
-
-static const struct regmap_bus regmap_mmio = {
- .fast_io = true,
- .reg_write = regmap_mmio_write,
- .reg_read = regmap_mmio_read,
- .free_context = regmap_mmio_free_context,
- .val_format_endian_default = REGMAP_ENDIAN_LITTLE,
-};
-
-static struct regmap_mmio_context *regmap_mmio_gen_context(struct device *dev,
- const char *clk_id,
- void __iomem *regs,
- const struct regmap_config *config)
-{
- struct regmap_mmio_context *ctx;
- int min_stride;
- int ret;
-
- ret = regmap_mmio_regbits_check(config->reg_bits);
- if (ret)
- return ERR_PTR(ret);
-
- if (config->pad_bits)
- return ERR_PTR(-EINVAL);
-
- min_stride = regmap_mmio_get_min_stride(config->val_bits);
- if (min_stride < 0)
- return ERR_PTR(min_stride);
-
- if (config->reg_stride < min_stride)
- return ERR_PTR(-EINVAL);
-
- ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
- if (!ctx)
- return ERR_PTR(-ENOMEM);
-
- ctx->regs = regs;
- ctx->val_bytes = config->val_bits / 8;
- ctx->clk = ERR_PTR(-ENODEV);
-
- switch (regmap_get_val_endian(dev, &regmap_mmio, config)) {
- case REGMAP_ENDIAN_DEFAULT:
- case REGMAP_ENDIAN_LITTLE:
-#ifdef __LITTLE_ENDIAN
- case REGMAP_ENDIAN_NATIVE:
-#endif
- switch (config->val_bits) {
- case 8:
- ctx->reg_read = regmap_mmio_read8;
- ctx->reg_write = regmap_mmio_write8;
- break;
- case 16:
- ctx->reg_read = regmap_mmio_read16le;
- ctx->reg_write = regmap_mmio_write16le;
- break;
- case 32:
- ctx->reg_read = regmap_mmio_read32le;
- ctx->reg_write = regmap_mmio_write32le;
- break;
-#ifdef CONFIG_64BIT
- case 64:
- ctx->reg_read = regmap_mmio_read64le;
- ctx->reg_write = regmap_mmio_write64le;
- break;
-#endif
- default:
- ret = -EINVAL;
- goto err_free;
- }
- break;
- case REGMAP_ENDIAN_BIG:
-#ifdef __BIG_ENDIAN
- case REGMAP_ENDIAN_NATIVE:
-#endif
- switch (config->val_bits) {
- case 8:
- ctx->reg_read = regmap_mmio_read8;
- ctx->reg_write = regmap_mmio_write8;
- break;
- case 16:
- ctx->reg_read = regmap_mmio_read16be;
- ctx->reg_write = regmap_mmio_write16be;
- break;
- case 32:
- ctx->reg_read = regmap_mmio_read32be;
- ctx->reg_write = regmap_mmio_write32be;
- break;
- default:
- ret = -EINVAL;
- goto err_free;
- }
- break;
- default:
- ret = -EINVAL;
- goto err_free;
- }
-
- if (clk_id == NULL)
- return ctx;
-
- ctx->clk = clk_get(dev, clk_id);
- if (IS_ERR(ctx->clk)) {
- ret = PTR_ERR(ctx->clk);
- goto err_free;
- }
-
- ret = clk_prepare(ctx->clk);
- if (ret < 0) {
- clk_put(ctx->clk);
- goto err_free;
- }
-
- return ctx;
-
-err_free:
- kfree(ctx);
-
- return ERR_PTR(ret);
-}
-
-struct regmap *__regmap_init_mmio_clk(struct device *dev, const char *clk_id,
- void __iomem *regs,
- const struct regmap_config *config,
- struct lock_class_key *lock_key,
- const char *lock_name)
-{
- struct regmap_mmio_context *ctx;
-
- ctx = regmap_mmio_gen_context(dev, clk_id, regs, config);
- if (IS_ERR(ctx))
- return ERR_CAST(ctx);
-
- return __regmap_init(dev, &regmap_mmio, ctx, config,
- lock_key, lock_name);
-}
-EXPORT_SYMBOL_GPL(__regmap_init_mmio_clk);
-
-struct regmap *__devm_regmap_init_mmio_clk(struct device *dev,
- const char *clk_id,
- void __iomem *regs,
- const struct regmap_config *config,
- struct lock_class_key *lock_key,
- const char *lock_name)
-{
- struct regmap_mmio_context *ctx;
-
- ctx = regmap_mmio_gen_context(dev, clk_id, regs, config);
- if (IS_ERR(ctx))
- return ERR_CAST(ctx);
-
- return __devm_regmap_init(dev, &regmap_mmio, ctx, config,
- lock_key, lock_name);
-}
-EXPORT_SYMBOL_GPL(__devm_regmap_init_mmio_clk);
-
-int regmap_mmio_attach_clk(struct regmap *map, struct clk *clk)
-{
- struct regmap_mmio_context *ctx = map->bus_context;
-
- ctx->clk = clk;
- ctx->attached_clk = true;
-
- return clk_prepare(ctx->clk);
-}
-EXPORT_SYMBOL_GPL(regmap_mmio_attach_clk);
-
-void regmap_mmio_detach_clk(struct regmap *map)
-{
- struct regmap_mmio_context *ctx = map->bus_context;
-
- clk_unprepare(ctx->clk);
-
- ctx->attached_clk = false;
- ctx->clk = NULL;
-}
-EXPORT_SYMBOL_GPL(regmap_mmio_detach_clk);
-
-MODULE_LICENSE("GPL v2");