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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/powerpc/platforms/512x/pdm360ng.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/powerpc/platforms/512x/pdm360ng.c')
-rw-r--r--kernel/arch/powerpc/platforms/512x/pdm360ng.c131
1 files changed, 131 insertions, 0 deletions
diff --git a/kernel/arch/powerpc/platforms/512x/pdm360ng.c b/kernel/arch/powerpc/platforms/512x/pdm360ng.c
new file mode 100644
index 000000000..116f2325b
--- /dev/null
+++ b/kernel/arch/powerpc/platforms/512x/pdm360ng.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2010 DENX Software Engineering
+ *
+ * Anatolij Gustschin, <agust@denx.de>
+ *
+ * PDM360NG board setup
+ *
+ * This 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/kernel.h>
+#include <linux/io.h>
+#include <linux/of_address.h>
+#include <linux/of_fdt.h>
+#include <linux/of_platform.h>
+
+#include <asm/machdep.h>
+#include <asm/ipic.h>
+
+#include "mpc512x.h"
+
+#if defined(CONFIG_TOUCHSCREEN_ADS7846) || \
+ defined(CONFIG_TOUCHSCREEN_ADS7846_MODULE)
+#include <linux/interrupt.h>
+#include <linux/spi/ads7846.h>
+#include <linux/spi/spi.h>
+#include <linux/notifier.h>
+
+static void *pdm360ng_gpio_base;
+
+static int pdm360ng_get_pendown_state(void)
+{
+ u32 reg;
+
+ reg = in_be32(pdm360ng_gpio_base + 0xc);
+ if (reg & 0x40)
+ setbits32(pdm360ng_gpio_base + 0xc, 0x40);
+
+ reg = in_be32(pdm360ng_gpio_base + 0x8);
+
+ /* return 1 if pen is down */
+ return (reg & 0x40) == 0;
+}
+
+static struct ads7846_platform_data pdm360ng_ads7846_pdata = {
+ .model = 7845,
+ .get_pendown_state = pdm360ng_get_pendown_state,
+ .irq_flags = IRQF_TRIGGER_LOW,
+};
+
+static int __init pdm360ng_penirq_init(void)
+{
+ struct device_node *np;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,mpc5121-gpio");
+ if (!np) {
+ pr_err("%s: Can't find 'mpc5121-gpio' node\n", __func__);
+ return -ENODEV;
+ }
+
+ pdm360ng_gpio_base = of_iomap(np, 0);
+ of_node_put(np);
+ if (!pdm360ng_gpio_base) {
+ pr_err("%s: Can't map gpio regs.\n", __func__);
+ return -ENODEV;
+ }
+ out_be32(pdm360ng_gpio_base + 0xc, 0xffffffff);
+ setbits32(pdm360ng_gpio_base + 0x18, 0x2000);
+ setbits32(pdm360ng_gpio_base + 0x10, 0x40);
+
+ return 0;
+}
+
+static int pdm360ng_touchscreen_notifier_call(struct notifier_block *nb,
+ unsigned long event, void *__dev)
+{
+ struct device *dev = __dev;
+
+ if ((event == BUS_NOTIFY_ADD_DEVICE) &&
+ of_device_is_compatible(dev->of_node, "ti,ads7846")) {
+ dev->platform_data = &pdm360ng_ads7846_pdata;
+ return NOTIFY_OK;
+ }
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block pdm360ng_touchscreen_nb = {
+ .notifier_call = pdm360ng_touchscreen_notifier_call,
+};
+
+static void __init pdm360ng_touchscreen_init(void)
+{
+ if (pdm360ng_penirq_init())
+ return;
+
+ bus_register_notifier(&spi_bus_type, &pdm360ng_touchscreen_nb);
+}
+#else
+static inline void __init pdm360ng_touchscreen_init(void)
+{
+}
+#endif /* CONFIG_TOUCHSCREEN_ADS7846 */
+
+void __init pdm360ng_init(void)
+{
+ mpc512x_init();
+ pdm360ng_touchscreen_init();
+}
+
+static int __init pdm360ng_probe(void)
+{
+ unsigned long root = of_get_flat_dt_root();
+
+ return of_flat_dt_is_compatible(root, "ifm,pdm360ng");
+}
+
+define_machine(pdm360ng) {
+ .name = "PDM360NG",
+ .probe = pdm360ng_probe,
+ .setup_arch = mpc512x_setup_arch,
+ .init = pdm360ng_init,
+ .init_early = mpc512x_init_early,
+ .init_IRQ = mpc512x_init_IRQ,
+ .get_irq = ipic_get_irq,
+ .calibrate_decr = generic_calibrate_decr,
+ .restart = mpc512x_restart,
+};