On Wed, 02 Jul 2008 16:26:40 +0100, Jonathan Cameron wrote:
> Add fast_mode option to i2c_pxa_platform_data and use it to set the ICR_FM bit
> appropriately when i2c_pxa_reset is called. Parameter called fast_mode rather
> than frequency as this driver is also used for the i2c_pxa_pwr bus which has
> different normal and fast frequencies.
>
> Signed-off-by: Jonathan Cameron <[EMAIL PROTECTED]>
> ---
> drivers/i2c/busses/i2c-pxa.c | 4 +++-
> include/asm-arm/arch-pxa/i2c.h | 1 +
> include/asm-arm/arch-pxa/pxa-regs.h | 1 +
> 3 files changed, 5 insertions(+), 1 deletion(-)
>
> --- a/include/asm-arm/arch-pxa/pxa-regs.h 2008-06-30 20:06:02.000000000
> +0100
> +++ b/include/asm-arm/arch-pxa/pxa-regs.h 2008-07-02 14:03:19.000000000
> +0100
> @@ -448,6 +448,7 @@
> #define ICR_ALDIE (1 << 12) /* enable arbitration interrupt */
> #define ICR_SADIE (1 << 13) /* slave address detected int enable
> */
> #define ICR_UR (1 << 14) /* unit reset */
> +#define ICR_FM (1 << 15) /* fast mode */
>
> #define ISR_RWM (1 << 0) /* read/write mode */
> #define ISR_ACKNAK (1 << 1) /* ack/nak status */
> --- a/include/asm-arm/arch-pxa/i2c.h 2008-06-30 20:04:02.000000000 +0100
> +++ b/include/asm-arm/arch-pxa/i2c.h 2008-07-02 13:59:59.000000000 +0100
> @@ -66,6 +66,7 @@ struct i2c_pxa_platform_data {
> struct i2c_slave_client *slave;
> unsigned int class;
> int use_pio;
> + int fast_mode;
> };
>
> extern void pxa_set_i2c_info(struct i2c_pxa_platform_data *info);
> --- a/drivers/i2c/busses/i2c-pxa.c 2008-06-30 20:05:51.000000000 +0100
> +++ b/drivers/i2c/busses/i2c-pxa.c 2008-07-02 15:50:31.000000000 +0100
> @@ -67,6 +67,7 @@ struct pxa_i2c {
>
> int irq;
> int use_pio;
> + int fast_mode;
> };
>
> #define _IBMR(i2c) ((i2c)->reg_base + 0)
> @@ -365,7 +366,7 @@ static void i2c_pxa_reset(struct pxa_i2c
> writel(i2c->slave_addr, _ISAR(i2c));
>
> /* set control register values */
> - writel(I2C_ICR_INIT, _ICR(i2c));
> + writel(I2C_ICR_INIT | (i2c->fast_mode ? ICR_FM : 0), _ICR(i2c));
>
> #ifdef CONFIG_I2C_PXA_SLAVE
> dev_info(&i2c->adap.dev, "Enabling slave mode\n");
> @@ -1041,6 +1042,7 @@ static int i2c_pxa_probe(struct platform
> if (plat) {
> i2c->adap.class = plat->class;
> i2c->use_pio = plat->use_pio;
> + i2c->fast_mode = plat->fast_mode;
> }
>
> if (i2c->use_pio) {
Patch looks OK to me. Ben, i2c-pxa is embedded so this is something for
you.
--
Jean Delvare
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