I2C: OMAP2+: Convert omap I2C driver to use feature implementation flags from platfor...

This patch eliminates all cpu_...() tests from the OMAP I2C driver.

Instead, it uses the functionality flags in the platform data to make
the decisions about product variations the driver needs to handle.

Cc: patches@linaro.org
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andy Green <andy.green@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kevin Hilman <khilman@ti.com>

diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index 0254da4..3aaf7f1 100644 (file)
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -277,7 +277,7 @@ static void omap_i2c_unidle(struct omap_i2c_dev *dev)
 
        pm_runtime_get_sync(&pdev->dev);
 
-       if (cpu_is_omap34xx()) {
+       if (pdata->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);
@@ -335,6 +335,11 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
        unsigned long timeout;
        unsigned long internal_clk = 0;
        struct clk *fclk;
+       struct platform_device *pdev;
+       struct omap_i2c_bus_platform_data *pdata;
+
+       pdev = to_platform_device(dev->dev);
+       pdata = pdev->dev.platform_data;
 
        if (dev->rev >= OMAP_I2C_OMAP1_REV_2) {
                /* Disable I2C controller before soft reset */
@@ -386,7 +391,7 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
        }
        omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
 
-       if (cpu_class_is_omap1()) {
+       if (pdata->flags & OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK) {
                /*
                 * The I2C functional clock is the armxor_ck, so there's
                 * no need to get "armxor_ck" separately.  Now, if OMAP2420
@@ -410,7 +415,7 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
                        psc = fclk_rate / 12000000;
        }
 
-       if (!(cpu_class_is_omap1() || cpu_is_omap2420())) {
+       if (!(pdata->flags & OMAP_I2C_FLAG_SIMPLE_CLOCK)) {
 
                /*
                 * HSI2C controller internal clk rate should be 19.2 Mhz for
@@ -418,7 +423,8 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
                 * to get longer filter period for better noise suppression.
                 * The filter is iclk (fclk for HS) period.
                 */
-               if (dev->speed > 400 || cpu_is_omap2430())
+               if (dev->speed > 400 ||
+                              pdata->flags & OMAP_I2C_FLAG_FORCE_19200_INT_CLK)
                        internal_clk = 19200;
                else if (dev->speed > 100)
                        internal_clk = 9600;
@@ -487,7 +493,7 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
 
        dev->errata = 0;
 
-       if (cpu_is_omap2430() || cpu_is_omap34xx())
+       if (pdata->flags & OMAP_I2C_FLAG_APPLY_ERRATA_I207)
                dev->errata |= I2C_OMAP_ERRATA_I207;
 
        /* Enable interrupts */
@@ -496,7 +502,7 @@ static int omap_i2c_init(struct omap_i2c_dev *dev)
                        OMAP_I2C_IE_AL)  | ((dev->fifo_size) ?
                                (OMAP_I2C_IE_RDR | OMAP_I2C_IE_XDR) : 0);
        omap_i2c_write_reg(dev, OMAP_I2C_IE_REG, dev->iestate);
-       if (cpu_is_omap34xx()) {
+       if (pdata->flags & OMAP_I2C_FLAG_RESET_REGS_POSTIDLE) {
                dev->pscstate = psc;
                dev->scllstate = scll;
                dev->sclhstate = sclh;
@@ -816,6 +822,11 @@ omap_i2c_isr(int this_irq, void *dev_id)
        u16 bits;
        u16 stat, w;
        int err, count = 0;
+       struct platform_device *pdev;
+       struct omap_i2c_bus_platform_data *pdata;
+
+       pdev = to_platform_device(dev->dev);
+       pdata = pdev->dev.platform_data;
 
        if (dev->idle)
                return IRQ_NONE;
@@ -884,8 +895,8 @@ complete:
                                         * Data reg in 2430, omap3 and
                                         * omap4 is 8 bit wide
                                         */
-                                       if (cpu_class_is_omap1() ||
-                                                       cpu_is_omap2420()) {
+                                       if (pdata->flags &
+                                                OMAP_I2C_FLAG_16BIT_DATA_REG) {
                                                if (dev->buf_len) {
                                                        *dev->buf++ = w >> 8;
                                                        dev->buf_len--;
@@ -927,8 +938,8 @@ complete:
                                         * Data reg in 2430, omap3 and
                                         * omap4 is 8 bit wide
                                         */
-                                       if (cpu_class_is_omap1() ||
-                                                       cpu_is_omap2420()) {
+                                       if (pdata->flags &
+                                                OMAP_I2C_FLAG_16BIT_DATA_REG) {
                                                if (dev->buf_len) {
                                                        w |= *dev->buf++ << 8;
                                                        dev->buf_len--;
@@ -1030,12 +1041,7 @@ omap_i2c_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, dev);
 
-       if (cpu_is_omap7xx())
-               dev->reg_shift = 1;
-       else if (cpu_is_omap44xx())
-               dev->reg_shift = 0;
-       else
-               dev->reg_shift = 2;
+       dev->reg_shift = (pdata->flags >> OMAP_I2C_FLAG_BUS_SHIFT__SHIFT) & 3;
 
        if (pdata->rev == OMAP_I2C_IP_VERSION_2)
                dev->regs = (u8 *)reg_map_ip_v2;
@@ -1050,7 +1056,7 @@ omap_i2c_probe(struct platform_device *pdev)
        if (dev->rev <= OMAP_I2C_REV_ON_3430)
                dev->errata |= I2C_OMAP3_1P153;
 
-       if (!(cpu_class_is_omap1() || cpu_is_omap2420())) {
+       if (!(pdata->flags & OMAP_I2C_FLAG_NO_FIFO)) {
                u16 s;
 
                /* Set up the fifo size - Get total size */