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ARM: OMAP3: Add OMAP34xx pin multiplexing into I2C bus registration helper 

- Simplify function omap_i2c_mux_pins
- Add OMAP34xx pin multiplexing for busses 1 - 3

Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Jarkko Nikula 2008-12-10 17:36:52 -08:00 committed by Tony Lindgren
parent 6ccc4c0ded
commit ad636ad84e
1 changed files with 36 additions and 19 deletions
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55
arch/arm/plat-omap/i2c.c
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@ -79,26 +79,43 @@ static struct platform_device omap_i2c_devices[] = {
#endif
};
static void __init omap_i2c_mux_pins(int bus_id)
#if defined(CONFIG_ARCH_OMAP24XX)
static const int omap24xx_pins[][2] = {
{ M19_24XX_I2C1_SCL, L15_24XX_I2C1_SDA },
{ J15_24XX_I2C2_SCL, H19_24XX_I2C2_SDA },
};
#else
static const int omap24xx_pins[][2] = {};
#endif
#if defined(CONFIG_ARCH_OMAP34XX)
static const int omap34xx_pins[][2] = {
{ K21_34XX_I2C1_SCL, J21_34XX_I2C1_SDA},
{ AF15_34XX_I2C2_SCL, AE15_34XX_I2C2_SDA},
{ AF14_34XX_I2C3_SCL, AG14_34XX_I2C3_SDA},
};
#else
static const int omap34xx_pins[][2] = {};
#endif
static void __init omap_i2c_mux_pins(int bus)
{
/* TODO: Muxing for OMAP3 */
switch (bus_id) {
case 1:
if (cpu_class_is_omap1()) {
omap_cfg_reg(I2C_SCL);
omap_cfg_reg(I2C_SDA);
} else if (cpu_is_omap24xx()) {
omap_cfg_reg(M19_24XX_I2C1_SCL);
omap_cfg_reg(L15_24XX_I2C1_SDA);
}
break;
case 2:
if (cpu_is_omap24xx()) {
omap_cfg_reg(J15_24XX_I2C2_SCL);
omap_cfg_reg(H19_24XX_I2C2_SDA);
}
break;
int scl, sda;
if (cpu_class_is_omap1()) {
scl = I2C_SCL;
sda = I2C_SDA;
} else if (cpu_is_omap24xx()) {
scl = omap24xx_pins[bus][0];
sda = omap24xx_pins[bus][1];
} else if (cpu_is_omap34xx()) {
scl = omap34xx_pins[bus][0];
sda = omap34xx_pins[bus][1];
} else {
return;
}
omap_cfg_reg(sda);
omap_cfg_reg(scl);
}
int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
@ -142,6 +159,6 @@ int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
res[1].start = irq;
}
omap_i2c_mux_pins(bus_id);
omap_i2c_mux_pins(bus_id - 1);
return platform_device_register(pdev);
}