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>
diff --git a/drivers/spi/spi-ti-qspi.c b/drivers/spi/spi-ti-qspi.c
index 0b71270..1211b66 100644
--- a/drivers/spi/spi-ti-qspi.c
+++ b/drivers/spi/spi-ti-qspi.c
@@ -46,6 +46,8 @@
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 @@
u32 spi_max_frequency;
u32 cmd;
u32 dc;
+
+ bool ctrl_mod;
};
#define QSPI_PID (0x0)
@@ -437,7 +441,7 @@
{
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 @@
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 @@
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) {