7 files changed, 514 insertions, 91 deletions

diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index 5267ab93d550..a92440dbef07 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@ -965,8 +965,7 @@ static int __devinit nmk_i2c_probe(struct platform_device *pdev)
         adap->owner     = THIS_MODULE;
         adap->class     = I2C_CLASS_HWMON | I2C_CLASS_SPD;
         adap->algo      = &nmk_i2c_algo;
-        adap->timeout   = pdata->timeout ? msecs_to_jiffies(pdata->timeout) :
-                msecs_to_jiffies(20000);
+        adap->timeout   = msecs_to_jiffies(pdata->timeout);
         snprintf(adap->name, sizeof(adap->name),
                  "Nomadik I2C%d at %lx", pdev->id, (unsigned long)res->start);
 
diff --git a/drivers/pinctrl/pinctrl-nomadik.c b/drivers/pinctrl/pinctrl-nomadik.c
index 3e7e47d6b385..dd9e6f26416d 100644
--- a/drivers/pinctrl/pinctrl-nomadik.c
+++ b/drivers/pinctrl/pinctrl-nomadik.c
@@ -1198,7 +1198,7 @@ static int __devinit nmk_gpio_probe(struct platform_device *dev)
                 if (!pdata)
                         return -ENOMEM;
 
-                if (of_get_property(np, "supports-sleepmode", NULL))
+                if (of_get_property(np, "st,supports-sleepmode", NULL))
                         pdata->supports_sleepmode = true;
 
                 if (of_property_read_u32(np, "gpio-bank", &dev->id)) {
diff --git a/drivers/rtc/rtc-stmp3xxx.c b/drivers/rtc/rtc-stmp3xxx.c
index 10287865e330..739ef55694f4 100644
--- a/drivers/rtc/rtc-stmp3xxx.c
+++ b/drivers/rtc/rtc-stmp3xxx.c
@@ -25,6 +25,7 @@
 #include <linux/interrupt.h>
 #include <linux/rtc.h>
 #include <linux/slab.h>
+#include <linux/of_device.h>
 
 #include <mach/common.h>
 
@@ -265,6 +266,12 @@ static int stmp3xxx_rtc_resume(struct platform_device *dev)
 #define stmp3xxx_rtc_resume     NULL
 #endif
 
+static const struct of_device_id rtc_dt_ids[] = {
+        { .compatible = "fsl,stmp3xxx-rtc", },
+        { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, rtc_dt_ids);
+
 static struct platform_driver stmp3xxx_rtcdrv = {
         .probe          = stmp3xxx_rtc_probe,
         .remove         = stmp3xxx_rtc_remove,
@@ -273,6 +280,7 @@ static struct platform_driver stmp3xxx_rtcdrv = {
         .driver         = {
                 .name   = "stmp3xxx-rtc",
                 .owner  = THIS_MODULE,
+                .of_match_table = rtc_dt_ids,
         },
 };
 
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index 3c36cfaa1b93..0dedbbdb153a 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -27,10 +27,15 @@
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/spi/spi.h>
+#include <linux/gpio.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
 
 #include <mach/dma.h>
 #include <plat/s3c64xx-spi.h>
 
+#define MAX_SPI_PORTS           3
+
 /* Registers and bit-fields */
 
 #define S3C64XX_SPI_CH_CFG              0x00
@@ -113,13 +118,12 @@
 
 #define S3C64XX_SPI_FBCLK_MSK           (3<<0)
 
-#define S3C64XX_SPI_ST_TRLCNTZ(v, i) ((((v) >> (i)->rx_lvl_offset) & \
-                                        (((i)->fifo_lvl_mask + 1))) \
-                                        ? 1 : 0)
-
-#define S3C64XX_SPI_ST_TX_DONE(v, i) (((v) & (1 << (i)->tx_st_done)) ? 1 : 0)
-#define TX_FIFO_LVL(v, i) (((v) >> 6) & (i)->fifo_lvl_mask)
-#define RX_FIFO_LVL(v, i) (((v) >> (i)->rx_lvl_offset) & (i)->fifo_lvl_mask)
+#define FIFO_LVL_MASK(i) ((i)->port_conf->fifo_lvl_mask[i->port_id])
+#define S3C64XX_SPI_ST_TX_DONE(v, i) (((v) & \
+                                (1 << (i)->port_conf->tx_st_done)) ? 1 : 0)
+#define TX_FIFO_LVL(v, i) (((v) >> 6) & FIFO_LVL_MASK(i))
+#define RX_FIFO_LVL(v, i) (((v) >> (i)->port_conf->rx_lvl_offset) & \
+                                        FIFO_LVL_MASK(i))
 
 #define S3C64XX_SPI_MAX_TRAILCNT        0x3ff
 #define S3C64XX_SPI_TRAILCNT_OFF        19
@@ -135,6 +139,29 @@ struct s3c64xx_spi_dma_data {
         unsigned                ch;
         enum dma_data_direction direction;
         enum dma_ch     dmach;
+        struct property         *dma_prop;
+};
+
+/**
+ * struct s3c64xx_spi_info - SPI Controller hardware info
+ * @fifo_lvl_mask: Bit-mask for {TX|RX}_FIFO_LVL bits in SPI_STATUS register.
+ * @rx_lvl_offset: Bit offset of RX_FIFO_LVL bits in SPI_STATUS regiter.
+ * @tx_st_done: Bit offset of TX_DONE bit in SPI_STATUS regiter.
+ * @high_speed: True, if the controller supports HIGH_SPEED_EN bit.
+ * @clk_from_cmu: True, if the controller does not include a clock mux and
+ *      prescaler unit.
+ *
+ * The Samsung s3c64xx SPI controller are used on various Samsung SoC's but
+ * differ in some aspects such as the size of the fifo and spi bus clock
+ * setup. Such differences are specified to the driver using this structure
+ * which is provided as driver data to the driver.
+ */
+struct s3c64xx_spi_port_config {
+        int     fifo_lvl_mask[MAX_SPI_PORTS];
+        int     rx_lvl_offset;
+        int     tx_st_done;
+        bool    high_speed;
+        bool    clk_from_cmu;
 };
 
 /**
@@ -175,6 +202,9 @@ struct s3c64xx_spi_driver_data {
         struct s3c64xx_spi_dma_data     rx_dma;
         struct s3c64xx_spi_dma_data     tx_dma;
         struct samsung_dma_ops          *ops;
+        struct s3c64xx_spi_port_config  *port_conf;
+        unsigned int                    port_id;
+        unsigned long                   gpios[4];
 };
 
 static struct s3c2410_dma_client s3c64xx_spi_dma_client = {
@@ -183,7 +213,6 @@ static struct s3c2410_dma_client s3c64xx_spi_dma_client = {
 
 static void flush_fifo(struct s3c64xx_spi_driver_data *sdd)
 {
-        struct s3c64xx_spi_info *sci = sdd->cntrlr_info;
         void __iomem *regs = sdd->regs;
         unsigned long loops;
         u32 val;
@@ -199,7 +228,7 @@ static void flush_fifo(struct s3c64xx_spi_driver_data *sdd)
         loops = msecs_to_loops(1);
         do {
                 val = readl(regs + S3C64XX_SPI_STATUS);
-        } while (TX_FIFO_LVL(val, sci) && loops--);
+        } while (TX_FIFO_LVL(val, sdd) && loops--);
 
         if (loops == 0)
                 dev_warn(&sdd->pdev->dev, "Timed out flushing TX FIFO\n");
@@ -208,7 +237,7 @@ static void flush_fifo(struct s3c64xx_spi_driver_data *sdd)
         loops = msecs_to_loops(1);
         do {
                 val = readl(regs + S3C64XX_SPI_STATUS);
-                if (RX_FIFO_LVL(val, sci))
+                if (RX_FIFO_LVL(val, sdd))
                         readl(regs + S3C64XX_SPI_RX_DATA);
                 else
                         break;
@@ -301,7 +330,9 @@ static int acquire_dma(struct s3c64xx_spi_driver_data *sdd)
         req.cap = DMA_SLAVE;
         req.client = &s3c64xx_spi_dma_client;
 
+        req.dt_dmach_prop = sdd->rx_dma.dma_prop;
         sdd->rx_dma.ch = sdd->ops->request(sdd->rx_dma.dmach, &req);
+        req.dt_dmach_prop = sdd->tx_dma.dma_prop;
         sdd->tx_dma.ch = sdd->ops->request(sdd->tx_dma.dmach, &req);
 
         return 1;
@@ -311,7 +342,6 @@ static void enable_datapath(struct s3c64xx_spi_driver_data *sdd,
                                 struct spi_device *spi,
                                 struct spi_transfer *xfer, int dma_mode)
 {
-        struct s3c64xx_spi_info *sci = sdd->cntrlr_info;
         void __iomem *regs = sdd->regs;
         u32 modecfg, chcfg;
 
@@ -361,7 +391,7 @@ static void enable_datapath(struct s3c64xx_spi_driver_data *sdd,
         if (xfer->rx_buf != NULL) {
                 sdd->state |= RXBUSY;
 
-                if (sci->high_speed && sdd->cur_speed >= 30000000UL
+                if (sdd->port_conf->high_speed && sdd->cur_speed >= 30000000UL
                                         && !(sdd->cur_mode & SPI_CPHA))
                         chcfg |= S3C64XX_SPI_CH_HS_EN;
 
@@ -388,20 +418,19 @@ static inline void enable_cs(struct s3c64xx_spi_driver_data *sdd,
                 if (sdd->tgl_spi != spi) { /* if last mssg on diff device */
                         /* Deselect the last toggled device */
                         cs = sdd->tgl_spi->controller_data;
-                        cs->set_level(cs->line,
-                                        spi->mode & SPI_CS_HIGH ? 0 : 1);
+                        gpio_set_value(cs->line,
+                                spi->mode & SPI_CS_HIGH ? 0 : 1);
                 }
                 sdd->tgl_spi = NULL;
         }
 
         cs = spi->controller_data;
-        cs->set_level(cs->line, spi->mode & SPI_CS_HIGH ? 1 : 0);
+        gpio_set_value(cs->line, spi->mode & SPI_CS_HIGH ? 1 : 0);
 }
 
 static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd,
                                 struct spi_transfer *xfer, int dma_mode)
 {
-        struct s3c64xx_spi_info *sci = sdd->cntrlr_info;
         void __iomem *regs = sdd->regs;
         unsigned long val;
         int ms;
@@ -418,7 +447,7 @@ static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd,
                 val = msecs_to_loops(ms);
                 do {
                         status = readl(regs + S3C64XX_SPI_STATUS);
-                } while (RX_FIFO_LVL(status, sci) < xfer->len && --val);
+                } while (RX_FIFO_LVL(status, sdd) < xfer->len && --val);
         }
 
         if (!val)
@@ -437,8 +466,8 @@ static int wait_for_xfer(struct s3c64xx_spi_driver_data *sdd,
                 if (xfer->rx_buf == NULL) {
                         val = msecs_to_loops(10);
                         status = readl(regs + S3C64XX_SPI_STATUS);
-                        while ((TX_FIFO_LVL(status, sci)
-                                || !S3C64XX_SPI_ST_TX_DONE(status, sci))
+                        while ((TX_FIFO_LVL(status, sdd)
+                                || !S3C64XX_SPI_ST_TX_DONE(status, sdd))
                                         && --val) {
                                 cpu_relax();
                                 status = readl(regs + S3C64XX_SPI_STATUS);
@@ -482,17 +511,16 @@ static inline void disable_cs(struct s3c64xx_spi_driver_data *sdd,
         if (sdd->tgl_spi == spi)
                 sdd->tgl_spi = NULL;
 
-        cs->set_level(cs->line, spi->mode & SPI_CS_HIGH ? 0 : 1);
+        gpio_set_value(cs->line, spi->mode & SPI_CS_HIGH ? 0 : 1);
 }
 
 static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd)
 {
-        struct s3c64xx_spi_info *sci = sdd->cntrlr_info;
         void __iomem *regs = sdd->regs;
         u32 val;
 
         /* Disable Clock */
-        if (sci->clk_from_cmu) {
+        if (sdd->port_conf->clk_from_cmu) {
                 clk_disable(sdd->src_clk);
         } else {
                 val = readl(regs + S3C64XX_SPI_CLK_CFG);
@@ -536,7 +564,7 @@ static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd)
 
         writel(val, regs + S3C64XX_SPI_MODE_CFG);
 
-        if (sci->clk_from_cmu) {
+        if (sdd->port_conf->clk_from_cmu) {
                 /* Configure Clock */
                 /* There is half-multiplier before the SPI */
                 clk_set_rate(sdd->src_clk, sdd->cur_speed * 2);
@@ -562,7 +590,6 @@ static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd)
 static int s3c64xx_spi_map_mssg(struct s3c64xx_spi_driver_data *sdd,
                                                 struct spi_message *msg)
 {
-        struct s3c64xx_spi_info *sci = sdd->cntrlr_info;
         struct device *dev = &sdd->pdev->dev;
         struct spi_transfer *xfer;
 
@@ -578,7 +605,7 @@ static int s3c64xx_spi_map_mssg(struct s3c64xx_spi_driver_data *sdd,
         /* Map until end or first fail */
         list_for_each_entry(xfer, &msg->transfers, transfer_list) {
 
-                if (xfer->len <= ((sci->fifo_lvl_mask >> 1) + 1))
+                if (xfer->len <= ((FIFO_LVL_MASK(sdd) >> 1) + 1))
                         continue;
 
                 if (xfer->tx_buf != NULL) {
@@ -612,7 +639,6 @@ static int s3c64xx_spi_map_mssg(struct s3c64xx_spi_driver_data *sdd,
 static void s3c64xx_spi_unmap_mssg(struct s3c64xx_spi_driver_data *sdd,
                                                 struct spi_message *msg)
 {
-        struct s3c64xx_spi_info *sci = sdd->cntrlr_info;
         struct device *dev = &sdd->pdev->dev;
         struct spi_transfer *xfer;
 
@@ -621,7 +647,7 @@ static void s3c64xx_spi_unmap_mssg(struct s3c64xx_spi_driver_data *sdd,
 
         list_for_each_entry(xfer, &msg->transfers, transfer_list) {
 
-                if (xfer->len <= ((sci->fifo_lvl_mask >> 1) + 1))
+                if (xfer->len <= ((FIFO_LVL_MASK(sdd) >> 1) + 1))
                         continue;
 
                 if (xfer->rx_buf != NULL
@@ -640,7 +666,6 @@ static int s3c64xx_spi_transfer_one_message(struct spi_master *master,
                                             struct spi_message *msg)
 {
         struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master);
-        struct s3c64xx_spi_info *sci = sdd->cntrlr_info;
         struct spi_device *spi = msg->spi;
         struct s3c64xx_spi_csinfo *cs = spi->controller_data;
         struct spi_transfer *xfer;
@@ -695,7 +720,7 @@ static int s3c64xx_spi_transfer_one_message(struct spi_master *master,
                 }
 
                 /* Polling method for xfers not bigger than FIFO capacity */
-                if (xfer->len <= ((sci->fifo_lvl_mask >> 1) + 1))
+                if (xfer->len <= ((FIFO_LVL_MASK(sdd) >> 1) + 1))
                         use_dma = 0;
                 else
                         use_dma = 1;
@@ -800,6 +825,48 @@ static int s3c64xx_spi_unprepare_transfer(struct spi_master *spi)
         return 0;
 }
 
+static struct s3c64xx_spi_csinfo *s3c64xx_get_slave_ctrldata(
+                                struct s3c64xx_spi_driver_data *sdd,
+                                struct spi_device *spi)
+{
+        struct s3c64xx_spi_csinfo *cs;
+        struct device_node *slave_np, *data_np;
+        u32 fb_delay = 0;
+
+        slave_np = spi->dev.of_node;
+        if (!slave_np) {
+                dev_err(&spi->dev, "device node not found\n");
+                return ERR_PTR(-EINVAL);
+        }
+
+        for_each_child_of_node(slave_np, data_np)
+                if (!strcmp(data_np->name, "controller-data"))
+                        break;
+        if (!data_np) {
+                dev_err(&spi->dev, "child node 'controller-data' not found\n");
+                return ERR_PTR(-EINVAL);
+        }
+
+        cs = kzalloc(sizeof(*cs), GFP_KERNEL);
+        if (!cs) {
+                dev_err(&spi->dev, "could not allocate memory for controller"
+                                        " data\n");
+                return ERR_PTR(-ENOMEM);
+        }
+
+        cs->line = of_get_named_gpio(data_np, "cs-gpio", 0);
+        if (!gpio_is_valid(cs->line)) {
+                dev_err(&spi->dev, "chip select gpio is not specified or "
+                                        "invalid\n");
+                kfree(cs);
+                return ERR_PTR(-EINVAL);
+        }
+
+        of_property_read_u32(data_np, "samsung,spi-feedback-delay", &fb_delay);
+        cs->fb_delay = fb_delay;
+        return cs;
+}
+
 /*
  * Here we only check the validity of requested configuration
  * and save the configuration in a local data-structure.
@@ -813,14 +880,30 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
         struct s3c64xx_spi_info *sci;
         struct spi_message *msg;
         unsigned long flags;
-        int err = 0;
+        int err;
 
-        if (cs == NULL || cs->set_level == NULL) {
+        sdd = spi_master_get_devdata(spi->master);
+        if (!cs && spi->dev.of_node) {
+                cs = s3c64xx_get_slave_ctrldata(sdd, spi);
+                spi->controller_data = cs;
+        }
+
+        if (IS_ERR_OR_NULL(cs)) {
                 dev_err(&spi->dev, "No CS for SPI(%d)\n", spi->chip_select);
                 return -ENODEV;
         }
 
-        sdd = spi_master_get_devdata(spi->master);
+        if (!spi_get_ctldata(spi)) {
+                err = gpio_request(cs->line, dev_name(&spi->dev));
+                if (err) {
+                        dev_err(&spi->dev, "request for slave select gpio "
+                                        "line [%d] failed\n", cs->line);
+                        err = -EBUSY;
+                        goto err_gpio_req;
+                }
+                spi_set_ctldata(spi, cs);
+        }
+
         sci = sdd->cntrlr_info;
 
         spin_lock_irqsave(&sdd->lock, flags);
@@ -831,7 +914,8 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
                         dev_err(&spi->dev,
                                 "setup: attempt while mssg in queue!\n");
                         spin_unlock_irqrestore(&sdd->lock, flags);
-                        return -EBUSY;
+                        err = -EBUSY;
+                        goto err_msgq;
                 }
         }
 
@@ -849,7 +933,7 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
         pm_runtime_get_sync(&sdd->pdev->dev);
 
         /* Check if we can provide the requested rate */
-        if (!sci->clk_from_cmu) {
+        if (!sdd->port_conf->clk_from_cmu) {
                 u32 psr, speed;
 
                 /* Max possible */
@@ -874,22 +958,44 @@ static int s3c64xx_spi_setup(struct spi_device *spi)
                 }
 
                 speed = clk_get_rate(sdd->src_clk) / 2 / (psr + 1);
-                if (spi->max_speed_hz >= speed)
+                if (spi->max_speed_hz >= speed) {
                         spi->max_speed_hz = speed;
-                else
+                } else {
                         err = -EINVAL;
+                        goto setup_exit;
+                }
         }
 
         pm_runtime_put(&sdd->pdev->dev);
+        disable_cs(sdd, spi);
+        return 0;
 
 setup_exit:
-
         /* setup() returns with device de-selected */
         disable_cs(sdd, spi);
 
+err_msgq:
+        gpio_free(cs->line);
+        spi_set_ctldata(spi, NULL);
+
+err_gpio_req:
+        kfree(cs);
+
         return err;
 }
 
+static void s3c64xx_spi_cleanup(struct spi_device *spi)
+{
+        struct s3c64xx_spi_csinfo *cs = spi_get_ctldata(spi);
+
+        if (cs) {
+                gpio_free(cs->line);
+                if (spi->dev.of_node)
+                        kfree(cs);
+        }
+        spi_set_ctldata(spi, NULL);
+}
+
 static irqreturn_t s3c64xx_spi_irq(int irq, void *data)
 {
         struct s3c64xx_spi_driver_data *sdd = data;
@@ -930,7 +1036,7 @@ static void s3c64xx_spi_hwinit(struct s3c64xx_spi_driver_data *sdd, int channel)
         /* Disable Interrupts - we use Polling if not DMA mode */
         writel(0, regs + S3C64XX_SPI_INT_EN);
 
-        if (!sci->clk_from_cmu)
+        if (!sdd->port_conf->clk_from_cmu)
                 writel(sci->src_clk_nr << S3C64XX_SPI_CLKSEL_SRCSHFT,
                                 regs + S3C64XX_SPI_CLK_CFG);
         writel(0, regs + S3C64XX_SPI_MODE_CFG);
@@ -951,40 +1057,164 @@ static void s3c64xx_spi_hwinit(struct s3c64xx_spi_driver_data *sdd, int channel)
         flush_fifo(sdd);
 }
 
-static int __init s3c64xx_spi_probe(struct platform_device *pdev)
+static int __devinit s3c64xx_spi_get_dmares(
+                        struct s3c64xx_spi_driver_data *sdd, bool tx)
+{
+        struct platform_device *pdev = sdd->pdev;
+        struct s3c64xx_spi_dma_data *dma_data;
+        struct property *prop;
+        struct resource *res;
+        char prop_name[15], *chan_str;
+
+        if (tx) {
+                dma_data = &sdd->tx_dma;
+                dma_data->direction = DMA_TO_DEVICE;
+                chan_str = "tx";
+        } else {
+                dma_data = &sdd->rx_dma;
+                dma_data->direction = DMA_FROM_DEVICE;
+                chan_str = "rx";
+        }
+
+        if (!sdd->pdev->dev.of_node) {
+                res = platform_get_resource(pdev, IORESOURCE_DMA, tx ? 0 : 1);
+                if (!res) {
+                        dev_err(&pdev->dev, "Unable to get SPI-%s dma "
+                                        "resource\n", chan_str);
+                        return -ENXIO;
+                }
+                dma_data->dmach = res->start;
+                return 0;
+        }
+
+        sprintf(prop_name, "%s-dma-channel", chan_str);
+        prop = of_find_property(pdev->dev.of_node, prop_name, NULL);
+        if (!prop) {
+                dev_err(&pdev->dev, "%s dma channel property not specified\n",
+                                        chan_str);
+                return -ENXIO;
+        }
+
+        dma_data->dmach = DMACH_DT_PROP;
+        dma_data->dma_prop = prop;
+        return 0;
+}
+
+#ifdef CONFIG_OF
+static int s3c64xx_spi_parse_dt_gpio(struct s3c64xx_spi_driver_data *sdd)
+{
+        struct device *dev = &sdd->pdev->dev;
+        int idx, gpio, ret;
+
+        /* find gpios for mosi, miso and clock lines */
+        for (idx = 0; idx < 3; idx++) {
+                gpio = of_get_gpio(dev->of_node, idx);
+                if (!gpio_is_valid(gpio)) {
+                        dev_err(dev, "invalid gpio[%d]: %d\n", idx, gpio);
+                        goto free_gpio;
+                }
+
+                ret = gpio_request(gpio, "spi-bus");
+                if (ret) {
+                        dev_err(dev, "gpio [%d] request failed\n", gpio);
+                        goto free_gpio;
+                }
+        }
+        return 0;
+
+free_gpio:
+        while (--idx >= 0)
+                gpio_free(sdd->gpios[idx]);
+        return -EINVAL;
+}
+
+static void s3c64xx_spi_dt_gpio_free(struct s3c64xx_spi_driver_data *sdd)
+{
+        unsigned int idx;
+        for (idx = 0; idx < 3; idx++)
+                gpio_free(sdd->gpios[idx]);
+}
+
+static struct __devinit s3c64xx_spi_info * s3c64xx_spi_parse_dt(
+                                                struct device *dev)
 {
-        struct resource *mem_res, *dmatx_res, *dmarx_res;
-        struct s3c64xx_spi_driver_data *sdd;
         struct s3c64xx_spi_info *sci;
-        struct spi_master *master;
-        int ret, irq;
-        char clk_name[16];
+        u32 temp;
 
-        if (pdev->id < 0) {
-                dev_err(&pdev->dev,
-                                "Invalid platform device id-%d\n", pdev->id);
-                return -ENODEV;
+        sci = devm_kzalloc(dev, sizeof(*sci), GFP_KERNEL);
+        if (!sci) {
+                dev_err(dev, "memory allocation for spi_info failed\n");
+                return ERR_PTR(-ENOMEM);
         }
 
-        if (pdev->dev.platform_data == NULL) {
-                dev_err(&pdev->dev, "platform_data missing!\n");
-                return -ENODEV;
+        if (of_property_read_u32(dev->of_node, "samsung,spi-src-clk", &temp)) {
+                dev_warn(dev, "spi bus clock parent not specified, using "
+                                "clock at index 0 as parent\n");
+                sci->src_clk_nr = 0;
+        } else {
+                sci->src_clk_nr = temp;
         }
 
-        sci = pdev->dev.platform_data;
+        if (of_property_read_u32(dev->of_node, "num-cs", &temp)) {
+                dev_warn(dev, "number of chip select lines not specified, "
+                                "assuming 1 chip select line\n");
+                sci->num_cs = 1;
+        } else {
+                sci->num_cs = temp;
+        }
+
+        return sci;
+}
+#else
+static struct s3c64xx_spi_info *s3c64xx_spi_parse_dt(struct device *dev)
+{
+        return dev->platform_data;
+}
+
+static int s3c64xx_spi_parse_dt_gpio(struct s3c64xx_spi_driver_data *sdd)
+{
+        return -EINVAL;
+}
 
-        /* Check for availability of necessary resource */
+static void s3c64xx_spi_dt_gpio_free(struct s3c64xx_spi_driver_data *sdd)
+{
+}
+#endif
 
-        dmatx_res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
-        if (dmatx_res == NULL) {
-                dev_err(&pdev->dev, "Unable to get SPI-Tx dma resource\n");
-                return -ENXIO;
+static const struct of_device_id s3c64xx_spi_dt_match[];
+
+static inline struct s3c64xx_spi_port_config *s3c64xx_spi_get_port_config(
+                                                struct platform_device *pdev)
+{
+#ifdef CONFIG_OF
+        if (pdev->dev.of_node) {
+                const struct of_device_id *match;
+                match = of_match_node(s3c64xx_spi_dt_match, pdev->dev.of_node);
+                return (struct s3c64xx_spi_port_config *)match->data;
         }
+#endif
+        return (struct s3c64xx_spi_port_config *)
+                         platform_get_device_id(pdev)->driver_data;
+}
 
-        dmarx_res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
-        if (dmarx_res == NULL) {
-                dev_err(&pdev->dev, "Unable to get SPI-Rx dma resource\n");
-                return -ENXIO;
+static int __init s3c64xx_spi_probe(struct platform_device *pdev)
+{
+        struct resource *mem_res;
+        struct s3c64xx_spi_driver_data *sdd;
+        struct s3c64xx_spi_info *sci = pdev->dev.platform_data;
+        struct spi_master *master;
+        int ret, irq;
+        char clk_name[16];
+
+        if (!sci && pdev->dev.of_node) {
+                sci = s3c64xx_spi_parse_dt(&pdev->dev);
+                if (IS_ERR(sci))
+                        return PTR_ERR(sci);
+        }
+
+        if (!sci) {
+                dev_err(&pdev->dev, "platform_data missing!\n");
+                return -ENODEV;
         }
 
         mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1009,19 +1239,37 @@ static int __init s3c64xx_spi_probe(struct platform_device *pdev)
         platform_set_drvdata(pdev, master);
 
         sdd = spi_master_get_devdata(master);
+        sdd->port_conf = s3c64xx_spi_get_port_config(pdev);
         sdd->master = master;
         sdd->cntrlr_info = sci;
         sdd->pdev = pdev;
         sdd->sfr_start = mem_res->start;
-        sdd->tx_dma.dmach = dmatx_res->start;
-        sdd->tx_dma.direction = DMA_MEM_TO_DEV;
-        sdd->rx_dma.dmach = dmarx_res->start;
-        sdd->rx_dma.direction = DMA_DEV_TO_MEM;
+        if (pdev->dev.of_node) {
+                ret = of_alias_get_id(pdev->dev.of_node, "spi");
+                if (ret < 0) {
+                        dev_err(&pdev->dev, "failed to get alias id, "
+                                                "errno %d\n", ret);
+                        goto err0;
+                }
+                sdd->port_id = ret;
+        } else {
+                sdd->port_id = pdev->id;
+        }
 
         sdd->cur_bpw = 8;
 
-        master->bus_num = pdev->id;
+        ret = s3c64xx_spi_get_dmares(sdd, true);
+        if (ret)
+                goto err0;
+
+        ret = s3c64xx_spi_get_dmares(sdd, false);
+        if (ret)
+                goto err0;
+
+        master->dev.of_node = pdev->dev.of_node;
+        master->bus_num = sdd->port_id;
         master->setup = s3c64xx_spi_setup;
+        master->cleanup = s3c64xx_spi_cleanup;
         master->prepare_transfer_hardware = s3c64xx_spi_prepare_transfer;
         master->transfer_one_message = s3c64xx_spi_transfer_one_message;
         master->unprepare_transfer_hardware = s3c64xx_spi_unprepare_transfer;
@@ -1044,7 +1292,10 @@ static int __init s3c64xx_spi_probe(struct platform_device *pdev)
                 goto err1;
         }
 
-        if (sci->cfg_gpio == NULL || sci->cfg_gpio(pdev)) {
+        if (!sci->cfg_gpio && pdev->dev.of_node) {
+                if (s3c64xx_spi_parse_dt_gpio(sdd))
+                        return -EBUSY;
+        } else if (sci->cfg_gpio == NULL || sci->cfg_gpio()) {
                 dev_err(&pdev->dev, "Unable to config gpio\n");
                 ret = -EBUSY;
                 goto err2;
@@ -1080,7 +1331,7 @@ static int __init s3c64xx_spi_probe(struct platform_device *pdev)
         }
 
         /* Setup Deufult Mode */
-        s3c64xx_spi_hwinit(sdd, pdev->id);
+        s3c64xx_spi_hwinit(sdd, sdd->port_id);
 
         spin_lock_init(&sdd->lock);
         init_completion(&sdd->xfer_completion);
@@ -1105,7 +1356,7 @@ static int __init s3c64xx_spi_probe(struct platform_device *pdev)
 
         dev_dbg(&pdev->dev, "Samsung SoC SPI Driver loaded for Bus SPI-%d "
                                         "with %d Slaves attached\n",
-                                        pdev->id, master->num_chipselect);
+                                        sdd->port_id, master->num_chipselect);
         dev_dbg(&pdev->dev, "\tIOmem=[0x%x-0x%x]\tDMA=[Rx-%d, Tx-%d]\n",
                                         mem_res->end, mem_res->start,
                                         sdd->rx_dma.dmach, sdd->tx_dma.dmach);
@@ -1125,6 +1376,8 @@ err5:
 err4:
         clk_put(sdd->clk);
 err3:
+        if (!sdd->cntrlr_info->cfg_gpio && pdev->dev.of_node)
+                s3c64xx_spi_dt_gpio_free(sdd);
 err2:
         iounmap((void *) sdd->regs);
 err1:
@@ -1156,6 +1409,9 @@ static int s3c64xx_spi_remove(struct platform_device *pdev)
         clk_disable(sdd->clk);
         clk_put(sdd->clk);
 
+        if (!sdd->cntrlr_info->cfg_gpio && pdev->dev.of_node)
+                s3c64xx_spi_dt_gpio_free(sdd);
+
         iounmap((void *) sdd->regs);
 
         mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -1180,6 +1436,9 @@ static int s3c64xx_spi_suspend(struct device *dev)
         clk_disable(sdd->src_clk);
         clk_disable(sdd->clk);
 
+        if (!sdd->cntrlr_info->cfg_gpio && dev->of_node)
+                s3c64xx_spi_dt_gpio_free(sdd);
+
         sdd->cur_speed = 0; /* Output Clock is stopped */
 
         return 0;
@@ -1187,18 +1446,20 @@ static int s3c64xx_spi_suspend(struct device *dev)
 
 static int s3c64xx_spi_resume(struct device *dev)
 {
-        struct platform_device *pdev = to_platform_device(dev);
         struct spi_master *master = spi_master_get(dev_get_drvdata(dev));
         struct s3c64xx_spi_driver_data *sdd = spi_master_get_devdata(master);
         struct s3c64xx_spi_info *sci = sdd->cntrlr_info;
 
-        sci->cfg_gpio(pdev);
+        if (!sci->cfg_gpio && dev->of_node)
+                s3c64xx_spi_parse_dt_gpio(sdd);
+        else
+                sci->cfg_gpio();
 
         /* Enable the clock */
         clk_enable(sdd->src_clk);
         clk_enable(sdd->clk);
 
-        s3c64xx_spi_hwinit(sdd, pdev->id);
+        s3c64xx_spi_hwinit(sdd, sdd->port_id);
 
         spi_master_resume(master);
 
@@ -1236,13 +1497,89 @@ static const struct dev_pm_ops s3c64xx_spi_pm = {
                            s3c64xx_spi_runtime_resume, NULL)
 };
 
+struct s3c64xx_spi_port_config s3c2443_spi_port_config = {
+        .fifo_lvl_mask  = { 0x7f },
+        .rx_lvl_offset  = 13,
+        .tx_st_done     = 21,
+        .high_speed     = true,
+};
+
+struct s3c64xx_spi_port_config s3c6410_spi_port_config = {
+        .fifo_lvl_mask  = { 0x7f, 0x7F },
+        .rx_lvl_offset  = 13,
+        .tx_st_done     = 21,
+};
+
+struct s3c64xx_spi_port_config s5p64x0_spi_port_config = {
+        .fifo_lvl_mask  = { 0x1ff, 0x7F },
+        .rx_lvl_offset  = 15,
+        .tx_st_done     = 25,
+};
+
+struct s3c64xx_spi_port_config s5pc100_spi_port_config = {
+        .fifo_lvl_mask  = { 0x7f, 0x7F },
+        .rx_lvl_offset  = 13,
+        .tx_st_done     = 21,
+        .high_speed     = true,
+};
+
+struct s3c64xx_spi_port_config s5pv210_spi_port_config = {
+        .fifo_lvl_mask  = { 0x1ff, 0x7F },
+        .rx_lvl_offset  = 15,
+        .tx_st_done     = 25,
+        .high_speed     = true,
+};
+
+struct s3c64xx_spi_port_config exynos4_spi_port_config = {
+        .fifo_lvl_mask  = { 0x1ff, 0x7F, 0x7F },
+        .rx_lvl_offset  = 15,
+        .tx_st_done     = 25,
+        .high_speed     = true,
+        .clk_from_cmu   = true,
+};
+
+static struct platform_device_id s3c64xx_spi_driver_ids[] = {
+        {
+                .name           = "s3c2443-spi",
+                .driver_data    = (kernel_ulong_t)&s3c2443_spi_port_config,
+        }, {
+                .name           = "s3c6410-spi",
+                .driver_data    = (kernel_ulong_t)&s3c6410_spi_port_config,
+        }, {
+                .name           = "s5p64x0-spi",
+                .driver_data    = (kernel_ulong_t)&s5p64x0_spi_port_config,
+        }, {
+                .name           = "s5pc100-spi",
+                .driver_data    = (kernel_ulong_t)&s5pc100_spi_port_config,
+        }, {
+                .name           = "s5pv210-spi",
+                .driver_data    = (kernel_ulong_t)&s5pv210_spi_port_config,
+        }, {
+                .name           = "exynos4210-spi",
+                .driver_data    = (kernel_ulong_t)&exynos4_spi_port_config,
+        },
+        { },
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id s3c64xx_spi_dt_match[] = {
+        { .compatible = "samsung,exynos4210-spi",
+                        .data = (void *)&exynos4_spi_port_config,
+        },
+        { },
+};
+MODULE_DEVICE_TABLE(of, s3c64xx_spi_dt_match);
+#endif /* CONFIG_OF */
+
 static struct platform_driver s3c64xx_spi_driver = {
         .driver = {
                 .name   = "s3c64xx-spi",
                 .owner = THIS_MODULE,
                 .pm = &s3c64xx_spi_pm,
+                .of_match_table = of_match_ptr(s3c64xx_spi_dt_match),
         },
         .remove = s3c64xx_spi_remove,
+        .id_table = s3c64xx_spi_driver_ids,
 };
 MODULE_ALIAS("platform:s3c64xx-spi");
 
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index ec56d8397aae..2e341b81ff89 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c
@@ -33,6 +33,7 @@
 #include <linux/delay.h>
 #include <linux/io.h>
 #include <linux/pinctrl/consumer.h>
+#include <linux/of_device.h>
 
 #include <asm/cacheflush.h>
 
@@ -675,6 +676,30 @@ static struct uart_driver auart_driver = {
 #endif
 };
 
+/*
+ * This function returns 1 if pdev isn't a device instatiated by dt, 0 if it
+ * could successfully get all information from dt or a negative errno.
+ */
+static int serial_mxs_probe_dt(struct mxs_auart_port *s,
+                struct platform_device *pdev)
+{
+        struct device_node *np = pdev->dev.of_node;
+        int ret;
+
+        if (!np)
+                /* no device tree device */
+                return 1;
+
+        ret = of_alias_get_id(np, "serial");
+        if (ret < 0) {
+                dev_err(&pdev->dev, "failed to get alias id: %d\n", ret);
+                return ret;
+        }
+        s->port.line = ret;
+
+        return 0;
+}
+
 static int __devinit mxs_auart_probe(struct platform_device *pdev)
 {
         struct mxs_auart_port *s;
@@ -689,6 +714,12 @@ static int __devinit mxs_auart_probe(struct platform_device *pdev)
                 goto out;
         }
 
+        ret = serial_mxs_probe_dt(s, pdev);
+        if (ret > 0)
+                s->port.line = pdev->id < 0 ? 0 : pdev->id;
+        else if (ret < 0)
+                goto out_free;
+
         pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
         if (IS_ERR(pinctrl)) {
                 ret = PTR_ERR(pinctrl);
@@ -711,7 +742,6 @@ static int __devinit mxs_auart_probe(struct platform_device *pdev)
         s->port.membase = ioremap(r->start, resource_size(r));
         s->port.ops = &mxs_auart_ops;
         s->port.iotype = UPIO_MEM;
-        s->port.line = pdev->id < 0 ? 0 : pdev->id;
         s->port.fifosize = 16;
         s->port.uartclk = clk_get_rate(s->clk);
         s->port.type = PORT_IMX;
@@ -728,7 +758,7 @@ static int __devinit mxs_auart_probe(struct platform_device *pdev)
 
         platform_set_drvdata(pdev, s);
 
-        auart_port[pdev->id] = s;
+        auart_port[s->port.line] = s;
 
         mxs_auart_reset(&s->port);
 
@@ -769,12 +799,19 @@ static int __devexit mxs_auart_remove(struct platform_device *pdev)
         return 0;
 }
 
+static struct of_device_id mxs_auart_dt_ids[] = {
+        { .compatible = "fsl,imx23-auart", },
+        { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxs_auart_dt_ids);
+
 static struct platform_driver mxs_auart_driver = {
         .probe = mxs_auart_probe,
         .remove = __devexit_p(mxs_auart_remove),
         .driver = {
                 .name = "mxs-auart",
                 .owner = THIS_MODULE,
+                .of_match_table = mxs_auart_dt_ids,
         },
 };
 
@@ -807,3 +844,4 @@ module_init(mxs_auart_init);
 module_exit(mxs_auart_exit);
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Freescale MXS application uart driver");
+MODULE_ALIAS("platform:mxs-auart");
diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c
index abbe691047bd..49619b441500 100644
--- a/drivers/video/mxsfb.c
+++ b/drivers/video/mxsfb.c
@@ -41,12 +41,14 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
 #include <linux/dma-mapping.h>
 #include <linux/io.h>
 #include <linux/pinctrl/consumer.h>
-#include <mach/mxsfb.h>
+#include <linux/mxsfb.h>
 
 #define REG_SET 4
 #define REG_CLR 8
@@ -750,16 +752,43 @@ static void __devexit mxsfb_free_videomem(struct mxsfb_info *host)
         }
 }
 
+static struct platform_device_id mxsfb_devtype[] = {
+        {
+                .name = "imx23-fb",
+                .driver_data = MXSFB_V3,
+        }, {
+                .name = "imx28-fb",
+                .driver_data = MXSFB_V4,
+        }, {
+                /* sentinel */
+        }
+};
+MODULE_DEVICE_TABLE(platform, mxsfb_devtype);
+
+static const struct of_device_id mxsfb_dt_ids[] = {
+        { .compatible = "fsl,imx23-lcdif", .data = &mxsfb_devtype[0], },
+        { .compatible = "fsl,imx28-lcdif", .data = &mxsfb_devtype[1], },
+        { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mxsfb_dt_ids);
+
 static int __devinit mxsfb_probe(struct platform_device *pdev)
 {
+        const struct of_device_id *of_id =
+                        of_match_device(mxsfb_dt_ids, &pdev->dev);
         struct mxsfb_platform_data *pdata = pdev->dev.platform_data;
         struct resource *res;
         struct mxsfb_info *host;
         struct fb_info *fb_info;
         struct fb_modelist *modelist;
         struct pinctrl *pinctrl;
+        int panel_enable;
+        enum of_gpio_flags flags;
         int i, ret;
 
+        if (of_id)
+                pdev->id_entry = of_id->data;
+
         if (!pdata) {
                 dev_err(&pdev->dev, "No platformdata. Giving up\n");
                 return -ENODEV;
@@ -807,6 +836,22 @@ static int __devinit mxsfb_probe(struct platform_device *pdev)
                 goto error_getclock;
         }
 
+        panel_enable = of_get_named_gpio_flags(pdev->dev.of_node,
+                                               "panel-enable-gpios", 0, &flags);
+        if (gpio_is_valid(panel_enable)) {
+                unsigned long f = GPIOF_OUT_INIT_HIGH;
+                if (flags == OF_GPIO_ACTIVE_LOW)
+                        f = GPIOF_OUT_INIT_LOW;
+                ret = devm_gpio_request_one(&pdev->dev, panel_enable,
+                                            f, "panel-enable");
+                if (ret) {
+                        dev_err(&pdev->dev,
+                                "failed to request gpio %d: %d\n",
+                                panel_enable, ret);
+                        goto error_panel_enable;
+                }
+        }
+
         fb_info->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
         if (!fb_info->pseudo_palette) {
                 ret = -ENOMEM;
@@ -854,6 +899,7 @@ error_register:
 error_init_fb:
         kfree(fb_info->pseudo_palette);
 error_pseudo_pallette:
+error_panel_enable:
         clk_put(host->clk);
 error_getclock:
 error_getpin:
@@ -901,19 +947,6 @@ static void mxsfb_shutdown(struct platform_device *pdev)
         writel(CTRL_RUN, host->base + LCDC_CTRL + REG_CLR);
 }
 
-static struct platform_device_id mxsfb_devtype[] = {
-        {
-                .name = "imx23-fb",
-                .driver_data = MXSFB_V3,
-        }, {
-                .name = "imx28-fb",
-                .driver_data = MXSFB_V4,
-        }, {
-                /* sentinel */
-        }
-};
-MODULE_DEVICE_TABLE(platform, mxsfb_devtype);
-
 static struct platform_driver mxsfb_driver = {
         .probe = mxsfb_probe,
         .remove = __devexit_p(mxsfb_remove),
@@ -921,6 +954,7 @@ static struct platform_driver mxsfb_driver = {
         .id_table = mxsfb_devtype,
         .driver = {
                    .name = DRIVER_NAME,
+                   .of_match_table = mxsfb_dt_ids,
         },
 };
 
diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
index 8285d65cd207..02ebfd5f0e65 100644
--- a/drivers/watchdog/omap_wdt.c
+++ b/drivers/watchdog/omap_wdt.c
@@ -430,6 +430,12 @@ static int omap_wdt_resume(struct platform_device *pdev)
 #define omap_wdt_resume         NULL
 #endif
 
+static const struct of_device_id omap_wdt_of_match[] = {
+        { .compatible = "ti,omap3-wdt", },
+        {},
+};
+MODULE_DEVICE_TABLE(of, omap_wdt_of_match);
+
 static struct platform_driver omap_wdt_driver = {
         .probe          = omap_wdt_probe,
         .remove         = __devexit_p(omap_wdt_remove),
@@ -439,6 +445,7 @@ static struct platform_driver omap_wdt_driver = {
         .driver         = {
                 .owner  = THIS_MODULE,
                 .name   = "omap_wdt",
+                .of_match_table = omap_wdt_of_match,
         },
 };