OPEN HMI

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export TSLIB_TSDEVICE=/dev/input/event0
export TSLIB_CALIBFILE=/etc/pointercal
export TSLIB_CONFFILE=/etc/ts.conf
export TSLIB_PLUGINDIR=/usr/lib/ts
export TSLIB_CONSOLEDEVICE=none
export TSLIB_FBDEVICE=/dev/fb0

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static void sun4i_tcon_channel_set_status(struct sun4i_tcon *tcon, int channel,
                      bool enabled)
{
    struct clk *clk;

    switch (channel) {
    case 0:
        regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
                   SUN4I_TCON0_CTL_TCON_ENABLE,
                   enabled ? SUN4I_TCON0_CTL_TCON_ENABLE : 0);
        regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,BIT(23),BIT(23));//SWAP R、B引脚
        clk = tcon->dclk;
        break;
    case 1:
        WARN_ON(!tcon->quirks->has_channel_1);
        regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
                   SUN4I_TCON1_CTL_TCON_ENABLE,
                   enabled ? SUN4I_TCON1_CTL_TCON_ENABLE : 0);
        clk = tcon->sclk1;
        break;
    default:
        DRM_WARN("Unknown channel... doing nothing\n");
        return;
    }

    if (enabled)
        clk_prepare_enable(clk);
    else
        clk_disable_unprepare(clk);
}