The functions omap_i2c_unidle/idle are called from omap_i2c_runtime_resume and omap_i2c_runtime_suspend which is compiled for CONFIG_PM_RUNTIME. This patch removes the omap_i2c_unidle/idle functions and folds them into the runtime callbacks. This fixes the below warn when CONFIG_PM_RUNTIME is not defined CC arch/arm/mach-omap2/board-ti8168evm.o drivers/i2c/busses/i2c-omap.c:272: warning: 'omap_i2c_unidle' defined but not used drivers/i2c/busses/i2c-omap.c:293: warning: 'omap_i2c_idle' defined but not used CC net/ipv4/ip_forward.o Cc: Kevin Hilman <khilman@xxxxxx> Cc: Ben Dooks <ben-linux@xxxxxxxxx> Signed-off-by: Shubhrajyoti D <shubhrajyoti@xxxxxx> --- previous post http://lists.infradead.org/pipermail/linux-arm-kernel/2012-January/080664.html drivers/i2c/busses/i2c-omap.c | 75 +++++++++++++++++----------------------- 1 files changed, 32 insertions(+), 43 deletions(-) diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 801df60..4f4188d 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -269,47 +269,6 @@ static inline u16 omap_i2c_read_reg(struct omap_i2c_dev *i2c_dev, int reg) (i2c_dev->regs[reg] << i2c_dev->reg_shift)); } -static void omap_i2c_unidle(struct omap_i2c_dev *dev) -{ - if (dev->flags & OMAP_I2C_FLAG_RESET_REGS_POSTIDLE) { - omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0); - omap_i2c_write_reg(dev, OMAP_I2C_PSC_REG, dev->pscstate); - omap_i2c_write_reg(dev, OMAP_I2C_SCLL_REG, dev->scllstate); - omap_i2c_write_reg(dev, OMAP_I2C_SCLH_REG, dev->sclhstate); - omap_i2c_write_reg(dev, OMAP_I2C_BUF_REG, dev->bufstate); - omap_i2c_write_reg(dev, OMAP_I2C_SYSC_REG, dev->syscstate); - omap_i2c_write_reg(dev, OMAP_I2C_WE_REG, dev->westate); - omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN); - } - - /* - * Don't write to this register if the IE state is 0 as it can - * cause deadlock. - */ - if (dev->iestate) - omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, dev->iestate); -} - -static void omap_i2c_idle(struct omap_i2c_dev *dev) -{ - u16 iv; - - dev->iestate = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG); - if (dev->dtrev == OMAP_I2C_IP_VERSION_2) - omap_i2c_write_reg(dev, OMAP_I2C_IP_V2_IRQENABLE_CLR, 1); - else - omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, 0); - - if (dev->rev < OMAP_I2C_OMAP1_REV_2) { - iv = omap_i2c_read_reg(dev, OMAP_I2C_IV_REG); /* Read clears */ - } else { - omap_i2c_write_reg(dev, OMAP_I2C_STAT_REG, dev->iestate); - - /* Flush posted write */ - omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG); - } -} - static int omap_i2c_init(struct omap_i2c_dev *dev) { u16 psc = 0, scll = 0, sclh = 0, buf = 0; @@ -1163,8 +1122,22 @@ static int omap_i2c_runtime_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct omap_i2c_dev *_dev = platform_get_drvdata(pdev); + u16 iv; + + _dev->iestate = omap_i2c_read_reg(_dev, OMAP_I2C_IE_REG); + if (_dev->dtrev == OMAP_I2C_IP_VERSION_2) + omap_i2c_write_reg(_dev, OMAP_I2C_IP_V2_IRQENABLE_CLR, 1); + else + omap_i2c_write_reg(_dev, OMAP_I2C_IE_REG, 0); + + if (_dev->rev < OMAP_I2C_OMAP1_REV_2) { + iv = omap_i2c_read_reg(_dev, OMAP_I2C_IV_REG); /* Read clears */ + } else { + omap_i2c_write_reg(_dev, OMAP_I2C_STAT_REG, _dev->iestate); - omap_i2c_idle(_dev); + /* Flush posted write */ + omap_i2c_read_reg(_dev, OMAP_I2C_STAT_REG); + } return 0; } @@ -1174,7 +1147,23 @@ static int omap_i2c_runtime_resume(struct device *dev) struct platform_device *pdev = to_platform_device(dev); struct omap_i2c_dev *_dev = platform_get_drvdata(pdev); - omap_i2c_unidle(_dev); + if (_dev->flags & OMAP_I2C_FLAG_RESET_REGS_POSTIDLE) { + omap_i2c_write_reg(_dev, OMAP_I2C_CON_REG, 0); + omap_i2c_write_reg(_dev, OMAP_I2C_PSC_REG, _dev->pscstate); + omap_i2c_write_reg(_dev, OMAP_I2C_SCLL_REG, _dev->scllstate); + omap_i2c_write_reg(_dev, OMAP_I2C_SCLH_REG, _dev->sclhstate); + omap_i2c_write_reg(_dev, OMAP_I2C_BUF_REG, _dev->bufstate); + omap_i2c_write_reg(_dev, OMAP_I2C_SYSC_REG, _dev->syscstate); + omap_i2c_write_reg(_dev, OMAP_I2C_WE_REG, _dev->westate); + omap_i2c_write_reg(_dev, OMAP_I2C_CON_REG, OMAP_I2C_CON_EN); + } + + /* + * Don't write to this register if the IE state is 0 as it can + * cause deadlock. + */ + if (_dev->iestate) + omap_i2c_write_reg(_dev, OMAP_I2C_IE_REG, _dev->iestate); return 0; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
