i2c-nomadik: turn the platform driver to an amba driver

The i2c-nomadik gateware is really a PrimeCell APB device. By hosting
the driver under the amba bus we can access it more easily, for
example using the generic pci-amba driver. The patch also fixes the
mach-ux500 users, so they register an amba device instead than a
platform device.

Signed-off-by: Alessandro Rubini <rubini@gnudd.com>
Acked-by: Giancarlo Asnaghi <giancarlo.asnaghi@st.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>

1 files changed, 5 insertions, 17 deletions

diff --git a/arch/arm/mach-ux500/devices-common.h b/arch/arm/mach-ux500/devices-common.h
index 23cf734b5384..ecdd8386cffb 100644
--- a/arch/arm/mach-ux500/devices-common.h
+++ b/arch/arm/mach-ux500/devices-common.h
@@ -56,27 +56,15 @@ dbx500_add_uart(struct device *parent, const char *name, resource_size_t base,
 
 struct nmk_i2c_controller;
 
-static inline struct platform_device *
+static inline struct amba_device *
 dbx500_add_i2c(struct device *parent, int id, resource_size_t base, int irq,
                struct nmk_i2c_controller *data)
 {
-        struct resource res[] = {
-                DEFINE_RES_MEM(base, SZ_4K),
-                DEFINE_RES_IRQ(irq),
-        };
+        /* Conjure a name similar to what the platform device used to have */
+        char name[16];
 
-        struct platform_device_info pdevinfo = {
-                .parent = parent,
-                .name = "nmk-i2c",
-                .id = id,
-                .res = res,
-                .num_res = ARRAY_SIZE(res),
-                .data = data,
-                .size_data = sizeof(*data),
-                .dma_mask = DMA_BIT_MASK(32),
-        };
-
-        return platform_device_register_full(&pdevinfo);
+        snprintf(name, sizeof(name), "nmk-i2c.%d", id);
+        return amba_apb_device_add(parent, name, base, SZ_4K, irq, 0, data, 0);
 }
 
 static inline struct amba_device *