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Commit ad636ad8 authored by Jarkko Nikula's avatar Jarkko Nikula Committed by Tony Lindgren
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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: default avatarJarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 6ccc4c0d

arch/arm/plat-omap/i2c.c

+36 −19
Original line number Diff line number Diff line
@@ -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:

	int scl, sda;



	if (cpu_class_is_omap1()) {

			omap_cfg_reg(I2C_SCL);

			omap_cfg_reg(I2C_SDA);

		scl = I2C_SCL;

		sda = 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;

		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);

}