[U-Boot] [PATCH 1/6] driver:i2c:s3c24x0: adapt driver to new i2c

[Heiko Schocher <hs@denx.de>]

Hello Piotr,

Am 13.11.2013 15:31, schrieb Piotr Wilczek:
> The s3c24x0 i2c driver is adapted to new i2c framework.
>
> Signed-off-by: Piotr Wilczek<p.wilczek@samsung.com>
> Signed-off-by: Kyungmin Park<kyungmin.park@samsung.com>
> Cc: Minkyu Kang<mk7.kang@samsung.com>
> Cc: Heiko Schocher<hs@denx.de>
> ---
>   drivers/i2c/Makefile      |    2 +-
>   drivers/i2c/s3c24x0_i2c.c |  157 +++++++++++++++++++++++++++++----------------
>   2 files changed, 101 insertions(+), 58 deletions(-)

Thanks for your work! Ne real issues with your patch, but
can you squash your patchset in one patch, as we not want
to lost "git bisect" functionality.

Beside of this, only minor comments:

[...]
> diff --git a/drivers/i2c/s3c24x0_i2c.c b/drivers/i2c/s3c24x0_i2c.c
> index f77a9d1..0051cac 100644
> --- a/drivers/i2c/s3c24x0_i2c.c
> +++ b/drivers/i2c/s3c24x0_i2c.c
> @@ -23,8 +23,6 @@
>   #include<i2c.h>
>   #include "s3c24x0_i2c.h"
>
> -#ifdef CONFIG_HARD_I2C
> -
>   #define	I2C_WRITE	0
>   #define I2C_READ	1
>
> @@ -127,7 +125,6 @@
>    * For SPL boot some boards need i2c before SDRAM is initialised so force
>    * variables to live in SRAM
>    */
> -static unsigned int g_current_bus __attribute__((section(".data")));
>   static struct s3c24x0_i2c_bus i2c_bus[CONFIG_MAX_I2C_NUM]
>   			__attribute__((section(".data")));
>
> @@ -143,6 +140,7 @@ static struct s3c24x0_i2c_bus *get_bus(unsigned int bus_idx)
>   		struct s3c24x0_i2c_bus *bus;
>
>   		bus =&i2c_bus[bus_idx];
> +

Why new line here?

>   		if (bus->active)
>   			return bus;
>   	}
> @@ -254,17 +252,17 @@ static void ReadWriteByte(struct s3c24x0_i2c *i2c)
>   	writel(readl(&i2c->iiccon)&  ~I2CCON_IRPND,&i2c->iiccon);
>   }
>
> -static struct s3c24x0_i2c *get_base_i2c(void)
> +static struct s3c24x0_i2c *get_base_i2c(int bus)
>   {
>   #ifdef CONFIG_EXYNOS4
>   	struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c()
>   							+ (EXYNOS4_I2C_SPACING
> -							* g_current_bus));
> +							* bus));
>   	return i2c;
>   #elif defined CONFIG_EXYNOS5
>   	struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c()
>   							+ (EXYNOS5_I2C_SPACING
> -							* g_current_bus));
> +							* bus));
>   	return i2c;
>   #else
>   	return s3c24x0_get_base_i2c();
> @@ -298,7 +296,6 @@ static void i2c_ch_init(struct s3c24x0_i2c *i2c, int speed, int slaveadd)
>   	writel(I2C_MODE_MT | I2C_TXRX_ENA,&i2c->iicstat);
>   }
>
> -#ifdef CONFIG_I2C_MULTI_BUS
>   static int hsi2c_get_clk_details(struct s3c24x0_i2c_bus *i2c_bus)
>   {
>   	struct exynos5_hsi2c *hsregs = i2c_bus->hsregs;
> @@ -307,8 +304,10 @@ static int hsi2c_get_clk_details(struct s3c24x0_i2c_bus *i2c_bus)
>   	unsigned int i = 0, utemp0 = 0, utemp1 = 0;
>   	unsigned int t_ftl_cycle;
>
> -#if defined CONFIG_EXYNOS5
> +#if (defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5)
>   	clkin = get_i2c_clk();
> +#else
> +	clkin = get_PCLK();
>   #endif

What has this change to do with the new i2c framework?

[...]

bye,
Heiko
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