Messages in this thread | | | Date | Sun, 20 Feb 2011 20:37:29 -0800 | Subject | Re: [PATCH v2] i2c: tegra: Add i2c support | From | Olof Johansson <> |
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Hi,
Just a couple of minor nits. I wouldn't worry about respinning just for these comments, but if you end up doing it for other feedback, see below.
-Olof
On Sun, Feb 20, 2011 at 5:14 PM, Colin Cross <ccross@android.com> wrote:
> diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c > new file mode 100644 > index 0000000..3921f66 > --- /dev/null > +++ b/drivers/i2c/busses/i2c-tegra.c > @@ -0,0 +1,700 @@ > +/* > + * drivers/i2c/busses/i2c-tegra.c > + * > + * Copyright (C) 2010 Google, Inc.
2011?
[..]
> +/* > + * i2c_writel and i2c_readl will offset the register if necessary to talk > + * to the I2C block inside the DVC block > + */ > +static unsigned long tegra_i2c_reg_addr(struct tegra_i2c_dev *i2c_dev, > + unsigned long reg) > +{ > + if (i2c_dev->is_dvc) > + reg += (reg >= I2C_TX_FIFO) ? 0x10 : 0x40; > + return reg; > +} > + > +static void i2c_writel(struct tegra_i2c_dev *i2c_dev, u32 val, > + unsigned long reg) > +{ > + writel(val, i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg)); > +} > + > +static u32 i2c_readl(struct tegra_i2c_dev *i2c_dev, unsigned long reg) > +{ > + return readl(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg)); > +} > + > +static void i2c_writesl(struct tegra_i2c_dev *i2c_dev, void *data, > + unsigned long reg, int len) > +{ > + writesl(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg), data, len); > +} > + > +static void i2c_readsl(struct tegra_i2c_dev *i2c_dev, void *data, > + unsigned long reg, int len) > +{ > + readsl(i2c_dev->base + tegra_i2c_reg_addr(i2c_dev, reg), data, len); > +}
All of the above pass in i2c_dev to tegra_i2c_reg_addr, might as well do the base addition in there.
> diff --git a/include/linux/i2c-tegra.h b/include/linux/i2c-tegra.h > new file mode 100644 > index 0000000..9c85da4 > --- /dev/null > +++ b/include/linux/i2c-tegra.h > @@ -0,0 +1,25 @@ > +/* > + * drivers/i2c/busses/i2c-tegra.c > + * > + * Copyright (C) 2010 Google, Inc.
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