spi/qspi: parse register by name.

Modify the qspi driver to parse reg information by name.
If "reg names" is not found, then revert back to normal
get resource.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 51 insertions, 2 deletions

diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c
index 0b71270fbf67..1211b663c814 100644
--- a/drivers/spi/spi-ti-qspi.c
+++ b/drivers/spi/spi-ti-qspi.c
@@ -46,6 +46,8 @@ struct ti_qspi {
 
         struct spi_master       *master;
         void __iomem            *base;
+        void __iomem            *ctrl_base;
+        void __iomem            *mmap_base;
         struct clk              *fclk;
         struct device           *dev;
 
@@ -54,6 +56,8 @@ struct ti_qspi {
         u32 spi_max_frequency;
         u32 cmd;
         u32 dc;
+
+        bool ctrl_mod;
 };
 
 #define QSPI_PID                        (0x0)
@@ -437,7 +441,7 @@ static int ti_qspi_probe(struct platform_device *pdev)
 {
         struct  ti_qspi *qspi;
         struct spi_master *master;
-        struct resource         *r;
+        struct resource         *r, *res_ctrl, *res_mmap;
         struct device_node *np = pdev->dev.of_node;
         u32 max_freq;
         int ret = 0, num_cs, irq;
@@ -465,7 +469,35 @@ static int ti_qspi_probe(struct platform_device *pdev)
         qspi->master = master;
         qspi->dev = &pdev->dev;
 
-        r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "qspi_base");
+        if (r == NULL) {
+                r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+                if (r == NULL) {
+                        dev_err(&pdev->dev, "missing platform data\n");
+                        return -ENODEV;
+                }
+        }
+
+        res_mmap = platform_get_resource_byname(pdev,
+                        IORESOURCE_MEM, "qspi_mmap");
+        if (res_mmap == NULL) {
+                res_mmap = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+                if (res_mmap == NULL) {
+                        dev_err(&pdev->dev,
+                                "memory mapped resource not required\n");
+                        return -ENODEV;
+                }
+        }
+
+        res_ctrl = platform_get_resource_byname(pdev,
+                        IORESOURCE_MEM, "qspi_ctrlmod");
+        if (res_ctrl == NULL) {
+                res_ctrl = platform_get_resource(pdev, IORESOURCE_MEM, 2);
+                if (res_ctrl == NULL) {
+                        dev_dbg(&pdev->dev,
+                                "control module resources not required\n");
+                }
+        }
 
         irq = platform_get_irq(pdev, 0);
         if (irq < 0) {
@@ -481,6 +513,23 @@ static int ti_qspi_probe(struct platform_device *pdev)
                 goto free_master;
         }
 
+        if (res_ctrl) {
+                qspi->ctrl_mod = true;
+                qspi->ctrl_base = devm_ioremap_resource(&pdev->dev, res_ctrl);
+                if (IS_ERR(qspi->ctrl_base)) {
+                        ret = PTR_ERR(qspi->ctrl_base);
+                        goto free_master;
+                }
+        }
+
+        if (res_mmap) {
+                qspi->mmap_base = devm_ioremap_resource(&pdev->dev, res_mmap);
+                if (IS_ERR(qspi->mmap_base)) {
+                        ret = PTR_ERR(qspi->mmap_base);
+                        goto free_master;
+                }
+        }
+
         ret = devm_request_irq(&pdev->dev, irq, ti_qspi_isr, 0,
                         dev_name(&pdev->dev), qspi);
         if (ret < 0) {