Commit c5d54744 authored by Andreas Larsson's avatar Andreas Larsson Committed by Wolfram Sang
Browse files

i2c: ocores: Move grlib set/get functions into #ifdef CONFIG_OF block 



This moves the grlib set and get functions into the #ifdef CONFIG_OF block to
avoid warnings of unimplemented functions when compiling with -Wunused-function
when CONFIG_OF is not defined.

Signed-off-by: default avatarAndreas Larsson <andreas@gaisler.com>
Acked-by: default avatarPeter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: default avatarWolfram Sang <w.sang@pengutronix.de>
parent 658122fe

drivers/i2c/busses/i2c-ocores.c

+34 −34
Original line number Diff line number Diff line
@@ -109,40 +109,6 @@ static inline u8 oc_getreg_32(struct ocores_i2c *i2c, int reg) 
	return ioread32(i2c->base + (reg << i2c->reg_shift));

}



/* Read and write functions for the GRLIB port of the controller. Registers are

 * 32-bit big endian and the PRELOW and PREHIGH registers are merged into one

 * register. The subsequent registers has their offset decreased accordingly. */

static u8 oc_getreg_grlib(struct ocores_i2c *i2c, int reg)

{

	u32 rd;

	int rreg = reg;

	if (reg != OCI2C_PRELOW)

		rreg--;

	rd = ioread32be(i2c->base + (rreg << i2c->reg_shift));

	if (reg == OCI2C_PREHIGH)

		return (u8)(rd >> 8);

	else

		return (u8)rd;

}



static void oc_setreg_grlib(struct ocores_i2c *i2c, int reg, u8 value)

{

	u32 curr, wr;

	int rreg = reg;

	if (reg != OCI2C_PRELOW)

		rreg--;

	if (reg == OCI2C_PRELOW || reg == OCI2C_PREHIGH) {

		curr = ioread32be(i2c->base + (rreg << i2c->reg_shift));

		if (reg == OCI2C_PRELOW)

			wr = (curr & 0xff00) | value;

		else

			wr = (((u32)value) << 8) | (curr & 0xff);

	} else {

		wr = value;

	}

	iowrite32be(wr, i2c->base + (rreg << i2c->reg_shift));

}



static inline void oc_setreg(struct ocores_i2c *i2c, int reg, u8 value)

{

	i2c->setreg(i2c, reg, value);
@@ -303,6 +269,40 @@ static struct of_device_id ocores_i2c_match[] = { 
MODULE_DEVICE_TABLE(of, ocores_i2c_match);



#ifdef CONFIG_OF

/* Read and write functions for the GRLIB port of the controller. Registers are

 * 32-bit big endian and the PRELOW and PREHIGH registers are merged into one

 * register. The subsequent registers has their offset decreased accordingly. */

static u8 oc_getreg_grlib(struct ocores_i2c *i2c, int reg)

{

	u32 rd;

	int rreg = reg;

	if (reg != OCI2C_PRELOW)

		rreg--;

	rd = ioread32be(i2c->base + (rreg << i2c->reg_shift));

	if (reg == OCI2C_PREHIGH)

		return (u8)(rd >> 8);

	else

		return (u8)rd;

}



static void oc_setreg_grlib(struct ocores_i2c *i2c, int reg, u8 value)

{

	u32 curr, wr;

	int rreg = reg;

	if (reg != OCI2C_PRELOW)

		rreg--;

	if (reg == OCI2C_PRELOW || reg == OCI2C_PREHIGH) {

		curr = ioread32be(i2c->base + (rreg << i2c->reg_shift));

		if (reg == OCI2C_PRELOW)

			wr = (curr & 0xff00) | value;

		else

			wr = (((u32)value) << 8) | (curr & 0xff);

	} else {

		wr = value;

	}

	iowrite32be(wr, i2c->base + (rreg << i2c->reg_shift));

}



static int ocores_i2c_of_probe(struct platform_device *pdev,

				struct ocores_i2c *i2c)

{

CRA Git | Maintained and supported by SUSTech CRA and CCSE