wfx: get out from the staging area

The wfx driver is now mature enough to leave the staging area.

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>

1 files changed, 0 insertions, 332 deletions

diff --git a/drivers/staging/wfx/hwio.c b/drivers/staging/wfx/hwio.c
deleted file mode 100644
index 3f9750b470be..000000000000
--- a/drivers/staging/wfx/hwio.c
+++ /dev/null
@@ -1,332 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Low-level I/O functions.
- *
- * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
- * Copyright (c) 2010, ST-Ericsson
- */
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/align.h>
-
-#include "hwio.h"
-#include "wfx.h"
-#include "bus.h"
-#include "traces.h"
-
-#define WFX_HIF_BUFFER_SIZE 0x2000
-
-static int wfx_read32(struct wfx_dev *wdev, int reg, u32 *val)
-{
-	int ret;
-	__le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL);
-
-	*val = ~0; /* Never return undefined value */
-	if (!tmp)
-		return -ENOMEM;
-	ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv, reg, tmp, sizeof(u32));
-	if (ret >= 0)
-		*val = le32_to_cpu(*tmp);
-	kfree(tmp);
-	if (ret)
-		dev_err(wdev->dev, "%s: bus communication error: %d\n", __func__, ret);
-	return ret;
-}
-
-static int wfx_write32(struct wfx_dev *wdev, int reg, u32 val)
-{
-	int ret;
-	__le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL);
-
-	if (!tmp)
-		return -ENOMEM;
-	*tmp = cpu_to_le32(val);
-	ret = wdev->hwbus_ops->copy_to_io(wdev->hwbus_priv, reg, tmp, sizeof(u32));
-	kfree(tmp);
-	if (ret)
-		dev_err(wdev->dev, "%s: bus communication error: %d\n", __func__, ret);
-	return ret;
-}
-
-static int wfx_read32_locked(struct wfx_dev *wdev, int reg, u32 *val)
-{
-	int ret;
-
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wfx_read32(wdev, reg, val);
-	_trace_io_read32(reg, *val);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	return ret;
-}
-
-static int wfx_write32_locked(struct wfx_dev *wdev, int reg, u32 val)
-{
-	int ret;
-
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wfx_write32(wdev, reg, val);
-	_trace_io_write32(reg, val);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	return ret;
-}
-
-static int wfx_write32_bits_locked(struct wfx_dev *wdev, int reg, u32 mask, u32 val)
-{
-	int ret;
-	u32 val_r, val_w;
-
-	WARN_ON(~mask & val);
-	val &= mask;
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wfx_read32(wdev, reg, &val_r);
-	_trace_io_read32(reg, val_r);
-	if (ret < 0)
-		goto err;
-	val_w = (val_r & ~mask) | val;
-	if (val_w != val_r) {
-		ret = wfx_write32(wdev, reg, val_w);
-		_trace_io_write32(reg, val_w);
-	}
-err:
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	return ret;
-}
-
-static int wfx_indirect_read(struct wfx_dev *wdev, int reg, u32 addr, void *buf, size_t len)
-{
-	int ret;
-	int i;
-	u32 cfg;
-	u32 prefetch;
-
-	WARN_ON(len >= WFX_HIF_BUFFER_SIZE);
-	WARN_ON(reg != WFX_REG_AHB_DPORT && reg != WFX_REG_SRAM_DPORT);
-
-	if (reg == WFX_REG_AHB_DPORT)
-		prefetch = CFG_PREFETCH_AHB;
-	else if (reg == WFX_REG_SRAM_DPORT)
-		prefetch = CFG_PREFETCH_SRAM;
-	else
-		return -ENODEV;
-
-	ret = wfx_write32(wdev, WFX_REG_BASE_ADDR, addr);
-	if (ret < 0)
-		goto err;
-
-	ret = wfx_read32(wdev, WFX_REG_CONFIG, &cfg);
-	if (ret < 0)
-		goto err;
-
-	ret = wfx_write32(wdev, WFX_REG_CONFIG, cfg | prefetch);
-	if (ret < 0)
-		goto err;
-
-	for (i = 0; i < 20; i++) {
-		ret = wfx_read32(wdev, WFX_REG_CONFIG, &cfg);
-		if (ret < 0)
-			goto err;
-		if (!(cfg & prefetch))
-			break;
-		usleep_range(200, 250);
-	}
-	if (i == 20) {
-		ret = -ETIMEDOUT;
-		goto err;
-	}
-
-	ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv, reg, buf, len);
-
-err:
-	if (ret < 0)
-		memset(buf, 0xFF, len); /* Never return undefined value */
-	return ret;
-}
-
-static int wfx_indirect_write(struct wfx_dev *wdev, int reg, u32 addr,
-			      const void *buf, size_t len)
-{
-	int ret;
-
-	WARN_ON(len >= WFX_HIF_BUFFER_SIZE);
-	WARN_ON(reg != WFX_REG_AHB_DPORT && reg != WFX_REG_SRAM_DPORT);
-	ret = wfx_write32(wdev, WFX_REG_BASE_ADDR, addr);
-	if (ret < 0)
-		return ret;
-
-	return wdev->hwbus_ops->copy_to_io(wdev->hwbus_priv, reg, buf, len);
-}
-
-static int wfx_indirect_read_locked(struct wfx_dev *wdev, int reg, u32 addr,
-				    void *buf, size_t len)
-{
-	int ret;
-
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wfx_indirect_read(wdev, reg, addr, buf, len);
-	_trace_io_ind_read(reg, addr, buf, len);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	return ret;
-}
-
-static int wfx_indirect_write_locked(struct wfx_dev *wdev, int reg, u32 addr,
-				     const void *buf, size_t len)
-{
-	int ret;
-
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wfx_indirect_write(wdev, reg, addr, buf, len);
-	_trace_io_ind_write(reg, addr, buf, len);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	return ret;
-}
-
-static int wfx_indirect_read32_locked(struct wfx_dev *wdev, int reg, u32 addr, u32 *val)
-{
-	int ret;
-	__le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL);
-
-	if (!tmp)
-		return -ENOMEM;
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wfx_indirect_read(wdev, reg, addr, tmp, sizeof(u32));
-	*val = le32_to_cpu(*tmp);
-	_trace_io_ind_read32(reg, addr, *val);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	kfree(tmp);
-	return ret;
-}
-
-static int wfx_indirect_write32_locked(struct wfx_dev *wdev, int reg, u32 addr, u32 val)
-{
-	int ret;
-	__le32 *tmp = kmalloc(sizeof(u32), GFP_KERNEL);
-
-	if (!tmp)
-		return -ENOMEM;
-	*tmp = cpu_to_le32(val);
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wfx_indirect_write(wdev, reg, addr, tmp, sizeof(u32));
-	_trace_io_ind_write32(reg, addr, val);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	kfree(tmp);
-	return ret;
-}
-
-int wfx_data_read(struct wfx_dev *wdev, void *buf, size_t len)
-{
-	int ret;
-
-	WARN(!IS_ALIGNED((uintptr_t)buf, 4), "unaligned buffer");
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wdev->hwbus_ops->copy_from_io(wdev->hwbus_priv, WFX_REG_IN_OUT_QUEUE, buf, len);
-	_trace_io_read(WFX_REG_IN_OUT_QUEUE, buf, len);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	if (ret)
-		dev_err(wdev->dev, "%s: bus communication error: %d\n", __func__, ret);
-	return ret;
-}
-
-int wfx_data_write(struct wfx_dev *wdev, const void *buf, size_t len)
-{
-	int ret;
-
-	WARN(!IS_ALIGNED((uintptr_t)buf, 4), "unaligned buffer");
-	wdev->hwbus_ops->lock(wdev->hwbus_priv);
-	ret = wdev->hwbus_ops->copy_to_io(wdev->hwbus_priv, WFX_REG_IN_OUT_QUEUE, buf, len);
-	_trace_io_write(WFX_REG_IN_OUT_QUEUE, buf, len);
-	wdev->hwbus_ops->unlock(wdev->hwbus_priv);
-	if (ret)
-		dev_err(wdev->dev, "%s: bus communication error: %d\n", __func__, ret);
-	return ret;
-}
-
-int wfx_sram_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len)
-{
-	return wfx_indirect_read_locked(wdev, WFX_REG_SRAM_DPORT, addr, buf, len);
-}
-
-int wfx_ahb_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len)
-{
-	return wfx_indirect_read_locked(wdev, WFX_REG_AHB_DPORT, addr, buf, len);
-}
-
-int wfx_sram_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len)
-{
-	return wfx_indirect_write_locked(wdev, WFX_REG_SRAM_DPORT, addr, buf, len);
-}
-
-int wfx_ahb_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len)
-{
-	return wfx_indirect_write_locked(wdev, WFX_REG_AHB_DPORT, addr, buf, len);
-}
-
-int wfx_sram_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val)
-{
-	return wfx_indirect_read32_locked(wdev, WFX_REG_SRAM_DPORT, addr, val);
-}
-
-int wfx_ahb_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val)
-{
-	return wfx_indirect_read32_locked(wdev, WFX_REG_AHB_DPORT, addr, val);
-}
-
-int wfx_sram_reg_write(struct wfx_dev *wdev, u32 addr, u32 val)
-{
-	return wfx_indirect_write32_locked(wdev, WFX_REG_SRAM_DPORT, addr, val);
-}
-
-int wfx_ahb_reg_write(struct wfx_dev *wdev, u32 addr, u32 val)
-{
-	return wfx_indirect_write32_locked(wdev, WFX_REG_AHB_DPORT, addr, val);
-}
-
-int wfx_config_reg_read(struct wfx_dev *wdev, u32 *val)
-{
-	return wfx_read32_locked(wdev, WFX_REG_CONFIG, val);
-}
-
-int wfx_config_reg_write(struct wfx_dev *wdev, u32 val)
-{
-	return wfx_write32_locked(wdev, WFX_REG_CONFIG, val);
-}
-
-int wfx_config_reg_write_bits(struct wfx_dev *wdev, u32 mask, u32 val)
-{
-	return wfx_write32_bits_locked(wdev, WFX_REG_CONFIG, mask, val);
-}
-
-int wfx_control_reg_read(struct wfx_dev *wdev, u32 *val)
-{
-	return wfx_read32_locked(wdev, WFX_REG_CONTROL, val);
-}
-
-int wfx_control_reg_write(struct wfx_dev *wdev, u32 val)
-{
-	return wfx_write32_locked(wdev, WFX_REG_CONTROL, val);
-}
-
-int wfx_control_reg_write_bits(struct wfx_dev *wdev, u32 mask, u32 val)
-{
-	return wfx_write32_bits_locked(wdev, WFX_REG_CONTROL, mask, val);
-}
-
-int wfx_igpr_reg_read(struct wfx_dev *wdev, int index, u32 *val)
-{
-	int ret;
-
-	*val = ~0; /* Never return undefined value */
-	ret = wfx_write32_locked(wdev, WFX_REG_SET_GEN_R_W, IGPR_RW | index << 24);
-	if (ret)
-		return ret;
-	ret = wfx_read32_locked(wdev, WFX_REG_SET_GEN_R_W, val);
-	if (ret)
-		return ret;
-	*val &= IGPR_VALUE;
-	return ret;
-}
-
-int wfx_igpr_reg_write(struct wfx_dev *wdev, int index, u32 val)
-{
-	return wfx_write32_locked(wdev, WFX_REG_SET_GEN_R_W, index << 24 | val);
-}