iio: frequency: adf4350: Add support for dt bindings

[karo-tx-linux.git] / drivers / iio / frequency / adf4350.c

diff --git a/drivers/iio/frequency/adf4350.c b/drivers/iio/frequency/adf4350.c
index f6849c8b6a90996a4f407dbc02c6e1967f63f29d..a4157cdb314d5c1a8975cd28216943b40dd38bd6 100644 (file)
--- a/drivers/iio/frequency/adf4350.c
+++ b/drivers/iio/frequency/adf4350.c
@@ -18,6 +18,8 @@
 #include <linux/gpio.h>
 #include <asm/div64.h>
 #include <linux/clk.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -375,14 +377,138 @@ static const struct iio_info adf4350_info = {
        .driver_module = THIS_MODULE,
 };
 
+#ifdef CONFIG_OF
+static struct adf4350_platform_data *adf4350_parse_dt(struct device *dev)
+{
+       struct device_node *np = dev->of_node;
+       struct adf4350_platform_data *pdata;
+       unsigned int tmp;
+       int ret;
+
+       pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+       if (!pdata) {
+               dev_err(dev, "could not allocate memory for platform data\n");
+               return NULL;
+       }
+
+       strncpy(&pdata->name[0], np->name, SPI_NAME_SIZE - 1);
+
+       tmp = 10000;
+       of_property_read_u32(np, "adi,channel-spacing", &tmp);
+       pdata->channel_spacing = tmp;
+
+       tmp = 0;
+       of_property_read_u32(np, "adi,power-up-frequency", &tmp);
+       pdata->power_up_frequency = tmp;
+
+       tmp = 0;
+       of_property_read_u32(np, "adi,reference-div-factor", &tmp);
+       pdata->ref_div_factor = tmp;
+
+       ret = of_get_gpio(np, 0);
+       if (ret < 0)
+               pdata->gpio_lock_detect = -1;
+       else
+               pdata->gpio_lock_detect = ret;
+
+       pdata->ref_doubler_en = of_property_read_bool(np,
+                       "adi,reference-doubler-enable");
+       pdata->ref_div2_en = of_property_read_bool(np,
+                       "adi,reference-div2-enable");
+
+       /* r2_user_settings */
+       pdata->r2_user_settings = of_property_read_bool(np,
+                       "adi,phase-detector-polarity-positive-enable") ?
+                       ADF4350_REG2_PD_POLARITY_POS : 0;
+       pdata->r2_user_settings |= of_property_read_bool(np,
+                       "adi,lock-detect-precision-6ns-enable") ?
+                       ADF4350_REG2_LDP_6ns : 0;
+       pdata->r2_user_settings |= of_property_read_bool(np,
+                       "adi,lock-detect-function-integer-n-enable") ?
+                       ADF4350_REG2_LDF_INT_N : 0;
+
+       tmp = 2500;
+       of_property_read_u32(np, "adi,charge-pump-current", &tmp);
+       pdata->r2_user_settings |= ADF4350_REG2_CHARGE_PUMP_CURR_uA(tmp);
+
+       tmp = 0;
+       of_property_read_u32(np, "adi,muxout-select", &tmp);
+       pdata->r2_user_settings |= ADF4350_REG2_MUXOUT(tmp);
+
+       pdata->r2_user_settings |= of_property_read_bool(np,
+                       "adi,low-spur-mode-enable") ?
+                       ADF4350_REG2_NOISE_MODE(0x3) : 0;
+
+       /* r3_user_settings */
+
+       pdata->r3_user_settings = of_property_read_bool(np,
+                       "adi,cycle-slip-reduction-enable") ?
+                       ADF4350_REG3_12BIT_CSR_EN : 0;
+       pdata->r3_user_settings |= of_property_read_bool(np,
+                       "adi,charge-cancellation-enable") ?
+                       ADF4351_REG3_CHARGE_CANCELLATION_EN : 0;
+
+       pdata->r3_user_settings |= of_property_read_bool(np,
+                       "adi,anti-backlash-3ns-enable") ?
+                       ADF4351_REG3_ANTI_BACKLASH_3ns_EN : 0;
+       pdata->r3_user_settings |= of_property_read_bool(np,
+                       "adi,band-select-clock-mode-high-enable") ?
+                       ADF4351_REG3_BAND_SEL_CLOCK_MODE_HIGH : 0;
+
+       tmp = 0;
+       of_property_read_u32(np, "adi,12bit-clk-divider", &tmp);
+       pdata->r3_user_settings |= ADF4350_REG3_12BIT_CLKDIV(tmp);
+
+       tmp = 0;
+       of_property_read_u32(np, "adi,clk-divider-mode", &tmp);
+       pdata->r3_user_settings |= ADF4350_REG3_12BIT_CLKDIV_MODE(tmp);
+
+       /* r4_user_settings */
+
+       pdata->r4_user_settings = of_property_read_bool(np,
+                       "adi,aux-output-enable") ?
+                       ADF4350_REG4_AUX_OUTPUT_EN : 0;
+       pdata->r4_user_settings |= of_property_read_bool(np,
+                       "adi,aux-output-fundamental-enable") ?
+                       ADF4350_REG4_AUX_OUTPUT_FUND : 0;
+       pdata->r4_user_settings |= of_property_read_bool(np,
+                       "adi,mute-till-lock-enable") ?
+                       ADF4350_REG4_MUTE_TILL_LOCK_EN : 0;
+
+       tmp = 0;
+       of_property_read_u32(np, "adi,output-power", &tmp);
+       pdata->r4_user_settings |= ADF4350_REG4_OUTPUT_PWR(tmp);
+
+       tmp = 0;
+       of_property_read_u32(np, "adi,aux-output-power", &tmp);
+       pdata->r4_user_settings |= ADF4350_REG4_AUX_OUTPUT_PWR(tmp);
+
+       return pdata;
+}
+#else
+static
+struct adf4350_platform_data *adf4350_parse_dt(struct device *dev)
+{
+       return NULL;
+}
+#endif
+
 static int adf4350_probe(struct spi_device *spi)
 {
-       struct adf4350_platform_data *pdata = spi->dev.platform_data;
+       struct adf4350_platform_data *pdata;
        struct iio_dev *indio_dev;
        struct adf4350_state *st;
        struct clk *clk = NULL;
        int ret;
 
+       if (spi->dev.of_node) {
+               pdata = adf4350_parse_dt(&spi->dev);
+               if (pdata == NULL)
+                       return -EINVAL;
+       } else {
+               pdata = spi->dev.platform_data;
+       }
+
        if (!pdata) {
                dev_warn(&spi->dev, "no platform data? using default\n");
                pdata = &default_pdata;