Am Samstag, 24. Oktober 2015, 11:06:04 schrieb Yakir Yang:
> Add phy driver for the Rockchip DisplayPort PHY module. This
> is required to get DisplayPort working in Rockchip SoCs.
>
> Tested-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
> Signed-off-by: Yakir Yang <ykk@xxxxxxxxxxxxxx>
> ---
> diff --git a/drivers/phy/phy-rockchip-dp.c b/drivers/phy/phy-rockchip-dp.c
> new file mode 100644
> index 0000000..4af19af
> --- /dev/null
> +++ b/drivers/phy/phy-rockchip-dp.c
> @@ -0,0 +1,153 @@
> +/*
> + * Rockchip DP PHY driver
> + *
> + * Copyright (C) 2015 FuZhou Rockchip Co., Ltd.
> + * Author: Yakir Yang <ykk@@rock-chips.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License as published by
> + * the Free Software Foundation; either version 2 of the License.
> + */
> +
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/of_address.h>
> +#include <linux/clk.h>
> +#include <linux/phy/phy.h>
> +#include <linux/regmap.h>
> +#include <linux/mfd/syscon.h>
> +#include <linux/platform_device.h>
> +
> +#define GRF_SOC_CON12 0x0274
> +#define GRF_EDP_REF_CLK_SEL_INTER BIT(4)
> +#define GRF_EDP_PHY_SIDDQ_WRITE_EN BIT(21)
> +#define GRF_EDP_PHY_SIDDQ_ON 0
> +#define GRF_EDP_PHY_SIDDQ_OFF BIT(5)
mixed spacers (tabs and spaces), please use either tabs if you want to
align stuff or a single space.
Also you're mixing the handling here, for SIDDQ you're defining both the
actual bit as well as the write-enable bit, but for CLK_SEL_INTR you're
hard-coding the 16-bit shift down in the code.
You could also just use/copy the HIWORD_MASK macro we use for example
in the clock controller.
> +
> +struct rockchip_dp_phy {
> + struct device *dev;
> + struct regmap *grf;
> + struct clk *phy_24m;
> +};
> +
> +static int rockchip_set_phy_state(struct phy *phy, bool enable)
> +{
> + struct rockchip_dp_phy *dp = phy_get_drvdata(phy);
> + int ret;
> +
> + if (enable) {
> + ret = regmap_write(dp->grf, GRF_SOC_CON12,
> + GRF_EDP_PHY_SIDDQ_WRITE_EN |
> + GRF_EDP_PHY_SIDDQ_ON);
> + if (ret < 0) {
> + dev_err(dp->dev, "Can't enable PHY power %d\n", ret);
> + return ret;
> + }
> +
> + ret = clk_prepare_enable(dp->phy_24m);
> +
unnecessary empty line after clk_prepare_enable
with these things fixed,
Reviewed-by: Heiko Stuebner <heiko@xxxxxxxxx>
Cheers,
Heiko
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