Exemple #1
0
/*
 * configures a single pad in the iomuxer
 */
int mxs_iomux_setup_pad(iomux_cfg_t pad)
{
	u32 reg, ofs, bp, bm;
	void *iomux_base = (void *)MXS_PINCTRL_BASE;
	struct mx28_register_32 *mxs_reg;

	/* muxsel */
	ofs = 0x100;
	ofs += PAD_BANK(pad) * 0x20 + PAD_PIN(pad) / 16 * 0x10;
	bp = PAD_PIN(pad) % 16 * 2;
	bm = 0x3 << bp;
	reg = readl(iomux_base + ofs);
	reg &= ~bm;
	reg |= PAD_MUXSEL(pad) << bp;
	writel(reg, iomux_base + ofs);

	/* drive */
	ofs = DRIVE_OFFSET;
	ofs += PAD_BANK(pad) * 0x40 + PAD_PIN(pad) / 8 * 0x10;
	/* mA */
	if (PAD_MA_VALID(pad)) {
		bp = PAD_PIN(pad) % 8 * 4;
		bm = 0x3 << bp;
		reg = readl(iomux_base + ofs);
		reg &= ~bm;
		reg |= PAD_MA(pad) << bp;
		writel(reg, iomux_base + ofs);
	}
	/* vol */
	if (PAD_VOL_VALID(pad)) {
		bp = PAD_PIN(pad) % 8 * 4 + 2;
		mxs_reg = (struct mx28_register_32 *)(iomux_base + ofs);
		if (PAD_VOL(pad))
			writel(1 << bp, &mxs_reg->reg_set);
		else
			writel(1 << bp, &mxs_reg->reg_clr);
	}

	/* pull */
	if (PAD_PULL_VALID(pad)) {
		ofs = PULL_OFFSET;
		ofs += PAD_BANK(pad) * 0x10;
		bp = PAD_PIN(pad);
		mxs_reg = (struct mx28_register_32 *)(iomux_base + ofs);
		if (PAD_PULL(pad))
			writel(1 << bp, &mxs_reg->reg_set);
		else
			writel(1 << bp, &mxs_reg->reg_clr);
	}

	return 0;
}
Exemple #2
0
int mxs_iomux_setup_pad(iomux_cfg_t pad)
{
	u32 reg, ofs, bp, bm;
	void __iomem *iomux_base = MXS_IO_ADDRESS(MXS_PINCTRL_BASE_ADDR);

	
	ofs = 0x100;
	ofs += PAD_BANK(pad) * 0x20 + PAD_PIN(pad) / 16 * 0x10;
	bp = PAD_PIN(pad) % 16 * 2;
	bm = 0x3 << bp;
	reg = __raw_readl(iomux_base + ofs);
	reg &= ~bm;
	reg |= PAD_MUXSEL(pad) << bp;
	__raw_writel(reg, iomux_base + ofs);

	
	ofs = cpu_is_mx23() ? 0x200 : 0x300;
	ofs += PAD_BANK(pad) * 0x40 + PAD_PIN(pad) / 8 * 0x10;
	
	if (PAD_MA_VALID(pad)) {
		bp = PAD_PIN(pad) % 8 * 4;
		bm = 0x3 << bp;
		reg = __raw_readl(iomux_base + ofs);
		reg &= ~bm;
		reg |= PAD_MA(pad) << bp;
		__raw_writel(reg, iomux_base + ofs);
	}
	
	if (PAD_VOL_VALID(pad)) {
		bp = PAD_PIN(pad) % 8 * 4 + 2;
		if (PAD_VOL(pad))
			__mxs_setl(1 << bp, iomux_base + ofs);
		else
			__mxs_clrl(1 << bp, iomux_base + ofs);
	}

	
	if (PAD_PULL_VALID(pad)) {
		ofs = cpu_is_mx23() ? 0x400 : 0x600;
		ofs += PAD_BANK(pad) * 0x10;
		bp = PAD_PIN(pad);
		if (PAD_PULL(pad))
			__mxs_setl(1 << bp, iomux_base + ofs);
		else
			__mxs_clrl(1 << bp, iomux_base + ofs);
	}

	return 0;
}