On 11/10/2014 04:30 PM, Ezequiel Garcia wrote:
[..]
> +static int img_i2c_init(struct img_i2c *i2c)
> +{
> + unsigned int clk_khz, bitrate_khz, clk_period, tckh, tckl, tsdh;
> + unsigned int i, ret, data, prescale, inc, int_bitrate;
> + unsigned int filt, filt_disable, filt_bypass;
> + struct img_i2c_timings timing;
> + u32 rev;
> +
> + ret = clk_prepare_enable(i2c->scb_clk);
> + if (ret)
> + return ret;
> +
> + rev = img_i2c_readl(i2c, SCB_CORE_REV_REG);
> + if ((rev & 0x00ffffff) < 0x00020200) {
> + dev_info(i2c->adap.dev.parent,
> + "Unknown hardware revision (%d.%d.%d.%d)\n",
> + (rev >> 24) & 0xff, (rev >> 16) & 0xff,
> + (rev >> 8) & 0xff, rev & 0xff);
> + clk_disable_unprepare(i2c->scb_clk);
> + return -EINVAL;
> + }
> +
> + if (rev == REL_SOC_IP_SCB_2_2_1)
> + i2c->need_wr_rd_fence = true;
> +
Maybe we can add a dev_info here:
dev_info(i2c->adap.dev.parent, "fence quirk enabled");
--
Ezequiel
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