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Diffstat (limited to 'arch/arm/mach-clps711x/devices.c')
-rw-r--r--arch/arm/mach-clps711x/devices.c149
1 files changed, 149 insertions, 0 deletions
diff --git a/arch/arm/mach-clps711x/devices.c b/arch/arm/mach-clps711x/devices.c
new file mode 100644
index 000000000..77a9617c2
--- /dev/null
+++ b/arch/arm/mach-clps711x/devices.c
@@ -0,0 +1,149 @@
+/*
+ * CLPS711X common devices definitions
+ *
+ * Author: Alexander Shiyan <shc_work@mail.ru>, 2013-2014
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/io.h>
+#include <linux/of_fdt.h>
+#include <linux/platform_device.h>
+#include <linux/random.h>
+#include <linux/sizes.h>
+#include <linux/slab.h>
+#include <linux/sys_soc.h>
+
+#include <asm/system_info.h>
+
+#include <mach/hardware.h>
+
+static const struct resource clps711x_cpuidle_res __initconst =
+ DEFINE_RES_MEM(CLPS711X_PHYS_BASE + HALT, SZ_128);
+
+static void __init clps711x_add_cpuidle(void)
+{
+ platform_device_register_simple("clps711x-cpuidle", PLATFORM_DEVID_NONE,
+ &clps711x_cpuidle_res, 1);
+}
+
+static const phys_addr_t clps711x_gpios[][2] __initconst = {
+ { PADR, PADDR },
+ { PBDR, PBDDR },
+ { PCDR, PCDDR },
+ { PDDR, PDDDR },
+ { PEDR, PEDDR },
+};
+
+static void __init clps711x_add_gpio(void)
+{
+ unsigned i;
+ struct resource gpio_res[2];
+
+ memset(gpio_res, 0, sizeof(gpio_res));
+
+ gpio_res[0].flags = IORESOURCE_MEM;
+ gpio_res[1].flags = IORESOURCE_MEM;
+
+ for (i = 0; i < ARRAY_SIZE(clps711x_gpios); i++) {
+ gpio_res[0].start = CLPS711X_PHYS_BASE + clps711x_gpios[i][0];
+ gpio_res[0].end = gpio_res[0].start;
+ gpio_res[1].start = CLPS711X_PHYS_BASE + clps711x_gpios[i][1];
+ gpio_res[1].end = gpio_res[1].start;
+
+ platform_device_register_simple("clps711x-gpio", i,
+ gpio_res, ARRAY_SIZE(gpio_res));
+ }
+}
+
+const struct resource clps711x_syscon_res[] __initconst = {
+ /* SYSCON1, SYSFLG1 */
+ DEFINE_RES_MEM(CLPS711X_PHYS_BASE + SYSCON1, SZ_128),
+ /* SYSCON2, SYSFLG2 */
+ DEFINE_RES_MEM(CLPS711X_PHYS_BASE + SYSCON2, SZ_128),
+ /* SYSCON3 */
+ DEFINE_RES_MEM(CLPS711X_PHYS_BASE + SYSCON3, SZ_64),
+};
+
+static void __init clps711x_add_syscon(void)
+{
+ unsigned i;
+
+ for (i = 0; i < ARRAY_SIZE(clps711x_syscon_res); i++)
+ platform_device_register_simple("syscon", i + 1,
+ &clps711x_syscon_res[i], 1);
+}
+
+static const struct resource clps711x_uart1_res[] __initconst = {
+ DEFINE_RES_MEM(CLPS711X_PHYS_BASE + UARTDR1, SZ_128),
+ DEFINE_RES_IRQ(IRQ_UTXINT1),
+ DEFINE_RES_IRQ(IRQ_URXINT1),
+};
+
+static const struct resource clps711x_uart2_res[] __initconst = {
+ DEFINE_RES_MEM(CLPS711X_PHYS_BASE + UARTDR2, SZ_128),
+ DEFINE_RES_IRQ(IRQ_UTXINT2),
+ DEFINE_RES_IRQ(IRQ_URXINT2),
+};
+
+static void __init clps711x_add_uart(void)
+{
+ platform_device_register_simple("clps711x-uart", 0, clps711x_uart1_res,
+ ARRAY_SIZE(clps711x_uart1_res));
+ platform_device_register_simple("clps711x-uart", 1, clps711x_uart2_res,
+ ARRAY_SIZE(clps711x_uart2_res));
+};
+
+static void __init clps711x_soc_init(void)
+{
+ struct soc_device_attribute *soc_dev_attr;
+ struct soc_device *soc_dev;
+ void __iomem *base;
+ u32 id[5];
+
+ base = ioremap(CLPS711X_PHYS_BASE, SZ_32K);
+ if (!base)
+ return;
+
+ id[0] = readl(base + UNIQID);
+ id[1] = readl(base + RANDID0);
+ id[2] = readl(base + RANDID1);
+ id[3] = readl(base + RANDID2);
+ id[4] = readl(base + RANDID3);
+ system_rev = SYSFLG1_VERID(readl(base + SYSFLG1));
+
+ add_device_randomness(id, sizeof(id));
+
+ system_serial_low = id[0];
+
+ soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+ if (!soc_dev_attr)
+ goto out_unmap;
+
+ soc_dev_attr->machine = of_flat_dt_get_machine_name();
+ soc_dev_attr->family = "Cirrus Logic CLPS711X";
+ soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%u", system_rev);
+ soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%08x", id[0]);
+
+ soc_dev = soc_device_register(soc_dev_attr);
+ if (IS_ERR(soc_dev)) {
+ kfree(soc_dev_attr->revision);
+ kfree(soc_dev_attr->soc_id);
+ kfree(soc_dev_attr);
+ }
+
+out_unmap:
+ iounmap(base);
+}
+
+void __init clps711x_devices_init(void)
+{
+ clps711x_add_cpuidle();
+ clps711x_add_gpio();
+ clps711x_add_syscon();
+ clps711x_add_uart();
+ clps711x_soc_init();
+}