1 files changed, 127 insertions, 0 deletions
diff --git a/target/linux/mediatek/files-5.10/drivers/mtd/mtk-snand/mtk-snand-os.h b/target/linux/mediatek/files-5.10/drivers/mtd/mtk-snand/mtk-snand-os.h
new file mode 100644
index 0000000000..eeeb83b53d
--- /dev/null
+++ b/target/linux/mediatek/files-5.10/drivers/mtd/mtk-snand/mtk-snand-os.h
@@ -0,0 +1,127 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 MediaTek Inc. All Rights Reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#ifndef _MTK_SNAND_OS_H_
+#define _MTK_SNAND_OS_H_
+
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/limits.h>
+#include <linux/types.h>
+#include <linux/bitops.h>
+#include <linux/sizes.h>
+#include <linux/iopoll.h>
+#include <linux/hrtimer.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <asm/div64.h>
+
+struct mtk_snand_plat_dev {
+	struct device *dev;
+	struct completion done;
+};
+
+/* Polling helpers */
+#define read16_poll_timeout(addr, val, cond, sleep_us, timeout_us) \
+	readw_poll_timeout((addr), (val), (cond), (sleep_us), (timeout_us))
+
+#define read32_poll_timeout(addr, val, cond, sleep_us, timeout_us) \
+	readl_poll_timeout((addr), (val), (cond), (sleep_us), (timeout_us))
+
+/* Timer helpers */
+#define mtk_snand_time_t ktime_t
+
+static inline mtk_snand_time_t timer_get_ticks(void)
+{
+	return ktime_get();
+}
+
+static inline mtk_snand_time_t timer_time_to_tick(uint32_t timeout_us)
+{
+	return ktime_add_us(ktime_set(0, 0), timeout_us);
+}
+
+static inline bool timer_is_timeout(mtk_snand_time_t start_tick,
+				    mtk_snand_time_t timeout_tick)
+{
+	ktime_t tmo = ktime_add(start_tick, timeout_tick);
+
+	return ktime_compare(ktime_get(), tmo) > 0;
+}
+
+/* Memory helpers */
+static inline void *generic_mem_alloc(struct mtk_snand_plat_dev *pdev,
+				      size_t size)
+{
+	return devm_kzalloc(pdev->dev, size, GFP_KERNEL);
+}
+static inline void generic_mem_free(struct mtk_snand_plat_dev *pdev, void *ptr)
+{
+	devm_kfree(pdev->dev, ptr);
+}
+
+static inline void *dma_mem_alloc(struct mtk_snand_plat_dev *pdev, size_t size)
+{
+	return kzalloc(size, GFP_KERNEL);
+}
+static inline void dma_mem_free(struct mtk_snand_plat_dev *pdev, void *ptr)
+{
+	kfree(ptr);
+}
+
+static inline int dma_mem_map(struct mtk_snand_plat_dev *pdev, void *vaddr,
+			      uintptr_t *dma_addr, size_t size, bool to_device)
+{
+	dma_addr_t addr;
+	int ret;
+
+	addr = dma_map_single(pdev->dev, vaddr, size,
+			      to_device ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+	ret = dma_mapping_error(pdev->dev, addr);
+	if (ret)
+		return ret;
+
+	*dma_addr = (uintptr_t)addr;
+
+	return 0;
+}
+
+static inline void dma_mem_unmap(struct mtk_snand_plat_dev *pdev,
+				 uintptr_t dma_addr, size_t size,
+				 bool to_device)
+{
+	dma_unmap_single(pdev->dev, dma_addr, size,
+			 to_device ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+}
+
+/* Interrupt helpers */
+static inline void irq_completion_done(struct mtk_snand_plat_dev *pdev)
+{
+	complete(&pdev->done);
+}
+
+static inline void irq_completion_init(struct mtk_snand_plat_dev *pdev)
+{
+	init_completion(&pdev->done);
+}
+
+static inline int irq_completion_wait(struct mtk_snand_plat_dev *pdev,
+				       void __iomem *reg, uint32_t bit,
+				       uint32_t timeout_us)
+{
+	int ret;
+
+	ret = wait_for_completion_timeout(&pdev->done,
+					  usecs_to_jiffies(timeout_us));
+	if (!ret)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+#endif /* _MTK_SNAND_OS_H_ */