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mtd: nand: brcmnand: Add support for flash-dma v0
This change adds support for flash dma v0.0. Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
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@ -117,6 +117,18 @@ enum flash_dma_reg {
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FLASH_DMA_CURRENT_DESC_EXT,
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};
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/* flash_dma registers v0*/
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static const u16 flash_dma_regs_v0[] = {
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[FLASH_DMA_REVISION] = 0x00,
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[FLASH_DMA_FIRST_DESC] = 0x04,
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[FLASH_DMA_CTRL] = 0x08,
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[FLASH_DMA_MODE] = 0x0c,
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[FLASH_DMA_STATUS] = 0x10,
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[FLASH_DMA_INTERRUPT_DESC] = 0x14,
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[FLASH_DMA_ERROR_STATUS] = 0x18,
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[FLASH_DMA_CURRENT_DESC] = 0x1c,
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};
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/* flash_dma registers v1*/
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static const u16 flash_dma_regs_v1[] = {
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[FLASH_DMA_REVISION] = 0x00,
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@ -597,6 +609,8 @@ static void brcmnand_flash_dma_revision_init(struct brcmnand_controller *ctrl)
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/* flash_dma register offsets */
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if (ctrl->nand_version >= 0x0703)
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ctrl->flash_dma_offsets = flash_dma_regs_v4;
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else if (ctrl->nand_version == 0x0602)
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ctrl->flash_dma_offsets = flash_dma_regs_v0;
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else
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ctrl->flash_dma_offsets = flash_dma_regs_v1;
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}
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@ -1673,8 +1687,11 @@ static void brcmnand_dma_run(struct brcmnand_host *host, dma_addr_t desc)
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flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC, lower_32_bits(desc));
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(void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC);
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flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC_EXT, upper_32_bits(desc));
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(void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC_EXT);
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if (ctrl->nand_version > 0x0602) {
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flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC_EXT,
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upper_32_bits(desc));
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(void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC_EXT);
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}
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/* Start FLASH_DMA engine */
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ctrl->dma_pending = true;
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