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@ -75,13 +75,14 @@ static void rb750_nand_write(const u8 *buf, unsigned len)
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{
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void __iomem *base = ar71xx_gpio_base;
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u32 out;
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u32 t;
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unsigned i;
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/* set data lines to output mode */
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__raw_writel(__raw_readl(base + GPIO_REG_OE) | RB750_NAND_DATA_BITS,
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base + GPIO_REG_OE);
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t = __raw_readl(base + AR71XX_GPIO_REG_OE);
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__raw_writel(t | RB750_NAND_DATA_BITS, base + AR71XX_GPIO_REG_OE);
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out = __raw_readl(base + GPIO_REG_OUT);
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out = __raw_readl(base + AR71XX_GPIO_REG_OUT);
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out &= ~(RB750_NAND_DATA_BITS | RB750_NAND_NWE);
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for (i = 0; i != len; i++) {
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u32 data;
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@ -89,18 +90,18 @@ static void rb750_nand_write(const u8 *buf, unsigned len)
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data = buf[i];
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data <<= RB750_NAND_DATA_SHIFT;
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data |= out;
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__raw_writel(data, base + GPIO_REG_OUT);
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__raw_writel(data, base + AR71XX_GPIO_REG_OUT);
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__raw_writel(data | RB750_NAND_NWE, base + GPIO_REG_OUT);
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__raw_writel(data | RB750_NAND_NWE, base + AR71XX_GPIO_REG_OUT);
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/* flush write */
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__raw_readl(base + GPIO_REG_OUT);
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__raw_readl(base + AR71XX_GPIO_REG_OUT);
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}
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/* set data lines to input mode */
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__raw_writel(__raw_readl(base + GPIO_REG_OE) & ~RB750_NAND_DATA_BITS,
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base + GPIO_REG_OE);
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t = __raw_readl(base + AR71XX_GPIO_REG_OE);
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__raw_writel(t & ~RB750_NAND_DATA_BITS, base + AR71XX_GPIO_REG_OE);
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/* flush write */
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__raw_readl(base + GPIO_REG_OE);
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__raw_readl(base + AR71XX_GPIO_REG_OE);
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}
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static int rb750_nand_read_verify(u8 *read_buf, unsigned len,
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@ -113,15 +114,16 @@ static int rb750_nand_read_verify(u8 *read_buf, unsigned len,
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u8 data;
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/* activate RE line */
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__raw_writel(RB750_NAND_NRE, base + GPIO_REG_CLEAR);
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__raw_writel(RB750_NAND_NRE, base + AR71XX_GPIO_REG_CLEAR);
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/* flush write */
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__raw_readl(base + GPIO_REG_CLEAR);
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__raw_readl(base + AR71XX_GPIO_REG_CLEAR);
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/* read input lines */
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data = __raw_readl(base + GPIO_REG_IN) >> RB750_NAND_DATA_SHIFT;
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data = __raw_readl(base + AR71XX_GPIO_REG_IN) >>
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RB750_NAND_DATA_SHIFT;
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/* deactivate RE line */
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__raw_writel(RB750_NAND_NRE, base + GPIO_REG_SET);
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__raw_writel(RB750_NAND_NRE, base + AR71XX_GPIO_REG_SET);
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if (read_buf)
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read_buf[i] = data;
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@ -136,8 +138,9 @@ static void rb750_nand_select_chip(struct mtd_info *mtd, int chip)
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{
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void __iomem *base = ar71xx_gpio_base;
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u32 func;
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u32 t;
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func = __raw_readl(base + GPIO_REG_FUNC);
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func = __raw_readl(base + AR71XX_GPIO_REG_FUNC);
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if (chip >= 0) {
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/* disable latch */
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rb750_latch_change(RB750_LVC573_LE, 0);
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@ -147,27 +150,27 @@ static void rb750_nand_select_chip(struct mtd_info *mtd, int chip)
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AR724X_GPIO_FUNC_SPI_EN);
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/* set input mode for data lines */
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__raw_writel(__raw_readl(base + GPIO_REG_OE) &
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~RB750_NAND_INPUT_BITS,
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base + GPIO_REG_OE);
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t = __raw_readl(base + AR71XX_GPIO_REG_OE);
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__raw_writel(t & ~RB750_NAND_INPUT_BITS,
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base + AR71XX_GPIO_REG_OE);
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/* deactivate RE and WE lines */
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__raw_writel(RB750_NAND_NRE | RB750_NAND_NWE,
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base + GPIO_REG_SET);
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base + AR71XX_GPIO_REG_SET);
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/* flush write */
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(void) __raw_readl(base + GPIO_REG_SET);
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(void) __raw_readl(base + AR71XX_GPIO_REG_SET);
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/* activate CE line */
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__raw_writel(RB750_NAND_NCE, base + GPIO_REG_CLEAR);
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__raw_writel(RB750_NAND_NCE, base + AR71XX_GPIO_REG_CLEAR);
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} else {
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/* deactivate CE line */
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__raw_writel(RB750_NAND_NCE, base + GPIO_REG_SET);
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__raw_writel(RB750_NAND_NCE, base + AR71XX_GPIO_REG_SET);
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/* flush write */
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(void) __raw_readl(base + GPIO_REG_SET);
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(void) __raw_readl(base + AR71XX_GPIO_REG_SET);
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__raw_writel(__raw_readl(base + GPIO_REG_OE) |
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RB750_NAND_IO0 | RB750_NAND_RDY,
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base + GPIO_REG_OE);
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t = __raw_readl(base + AR71XX_GPIO_REG_OE);
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__raw_writel(t | RB750_NAND_IO0 | RB750_NAND_RDY,
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base + AR71XX_GPIO_REG_OE);
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/* restore alternate functions */
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ar71xx_gpio_function_setup(AR724X_GPIO_FUNC_SPI_EN,
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@ -182,7 +185,7 @@ static int rb750_nand_dev_ready(struct mtd_info *mtd)
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{
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void __iomem *base = ar71xx_gpio_base;
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return !!(__raw_readl(base + GPIO_REG_IN) & RB750_NAND_RDY);
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return !!(__raw_readl(base + AR71XX_GPIO_REG_IN) & RB750_NAND_RDY);
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}
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static void rb750_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
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@ -192,15 +195,15 @@ static void rb750_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
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void __iomem *base = ar71xx_gpio_base;
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u32 t;
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t = __raw_readl(base + GPIO_REG_OUT);
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t = __raw_readl(base + AR71XX_GPIO_REG_OUT);
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t &= ~(RB750_NAND_CLE | RB750_NAND_ALE);
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t |= (ctrl & NAND_CLE) ? RB750_NAND_CLE : 0;
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t |= (ctrl & NAND_ALE) ? RB750_NAND_ALE : 0;
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__raw_writel(t, base + GPIO_REG_OUT);
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__raw_writel(t, base + AR71XX_GPIO_REG_OUT);
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/* flush write */
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__raw_readl(base + GPIO_REG_OUT);
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__raw_readl(base + AR71XX_GPIO_REG_OUT);
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}
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if (cmd != NAND_CMD_NONE) {
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@ -235,23 +238,24 @@ static void __init rb750_nand_gpio_init(void)
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{
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void __iomem *base = ar71xx_gpio_base;
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u32 out;
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u32 t;
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out = __raw_readl(base + GPIO_REG_OUT);
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out = __raw_readl(base + AR71XX_GPIO_REG_OUT);
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/* setup output levels */
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__raw_writel(RB750_NAND_NCE | RB750_NAND_NRE | RB750_NAND_NWE,
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base + GPIO_REG_SET);
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base + AR71XX_GPIO_REG_SET);
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__raw_writel(RB750_NAND_ALE | RB750_NAND_CLE,
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base + GPIO_REG_CLEAR);
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base + AR71XX_GPIO_REG_CLEAR);
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/* setup input lines */
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__raw_writel(__raw_readl(base + GPIO_REG_OE) & ~(RB750_NAND_INPUT_BITS),
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base + GPIO_REG_OE);
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t = __raw_readl(base + AR71XX_GPIO_REG_OE);
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__raw_writel(t & ~(RB750_NAND_INPUT_BITS), base + AR71XX_GPIO_REG_OE);
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/* setup output lines */
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__raw_writel(__raw_readl(base + GPIO_REG_OE) | RB750_NAND_OUTPUT_BITS,
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base + GPIO_REG_OE);
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t = __raw_readl(base + AR71XX_GPIO_REG_OE);
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__raw_writel(t | RB750_NAND_OUTPUT_BITS, base + AR71XX_GPIO_REG_OE);
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rb750_latch_change(~out & RB750_NAND_IO0, out & RB750_NAND_IO0);
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}
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