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mtd: nand: brcmnand: Add support for flash-dma v0

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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>
[Ported to U-Boot from the Linux kernel]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: William Zhang <william.zhang@broadcom.com>
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
This commit is contained in:
Kamal Dasu 2023-02-11 16:29:03 +01:00 committed by Dario Binacchi
parent 8dafc6b88e
commit 2de9ff609d
1 changed files with 19 additions and 2 deletions
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21
drivers/mtd/nand/raw/brcmnand/brcmnand.c
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@ -120,6 +120,18 @@ enum flash_dma_reg {
};
#ifndef __UBOOT__
/* flash_dma registers v0*/
static const u16 flash_dma_regs_v0[] = {
[FLASH_DMA_REVISION] = 0x00,
[FLASH_DMA_FIRST_DESC] = 0x04,
[FLASH_DMA_CTRL] = 0x08,
[FLASH_DMA_MODE] = 0x0c,
[FLASH_DMA_STATUS] = 0x10,
[FLASH_DMA_INTERRUPT_DESC] = 0x14,
[FLASH_DMA_ERROR_STATUS] = 0x18,
[FLASH_DMA_CURRENT_DESC] = 0x1c,
};
/* flash_dma registers v1*/
static const u16 flash_dma_regs_v1[] = {
[FLASH_DMA_REVISION] = 0x00,
@ -614,6 +626,8 @@ static void brcmnand_flash_dma_revision_init(struct brcmnand_controller *ctrl)
/* flash_dma register offsets */
if (ctrl->nand_version >= 0x0703)
ctrl->flash_dma_offsets = flash_dma_regs_v4;
else if (ctrl->nand_version == 0x0602)
ctrl->flash_dma_offsets = flash_dma_regs_v0;
else
ctrl->flash_dma_offsets = flash_dma_regs_v1;
}
@ -1645,8 +1659,11 @@ static void brcmnand_dma_run(struct brcmnand_host *host, dma_addr_t desc)
flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC, lower_32_bits(desc));
(void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC);
flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC_EXT, upper_32_bits(desc));
(void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC_EXT);
if (ctrl->nand_version > 0x0602) {
flash_dma_writel(ctrl, FLASH_DMA_FIRST_DESC_EXT,
upper_32_bits(desc));
(void)flash_dma_readl(ctrl, FLASH_DMA_FIRST_DESC_EXT);
}
/* Start FLASH_DMA engine */
ctrl->dma_pending = true;