[PATCH 9/9] TILER-DMM: Device support for OMAP

David Sin
2010-12-06T22:16:22Z

Add DMM device support for OMAP utilizing the
OMAP HWMOD framework.

Signed-off-by: Hari Kanigeri <h-kanigeri2@ti.com>
Signed-off-by: David Sin <davidsin@ti.com>
---
arch/arm/mach-omap2/Makefile | 2 +
arch/arm/mach-omap2/dmm-omap44xx.c | 80 ++++++++++++++++++++++++++++++++++++
2 files changed, 82 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/dmm-omap44xx.c

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 60e51bc..fc682ea 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -194,3 +194,5 @@ obj-y += $(smc91x-m) $(smc91x-y)

smsc911x-$(CONFIG_SMSC911X) := gpmc-smsc911x.o
obj-y += $(smsc911x-m) $(smsc911x-y)
+
+obj-$(CONFIG_ARCH_OMAP4) += dmm-omap44xx.o
diff --git a/arch/arm/mach-omap2/dmm-omap44xx.c b/arch/arm/mach-omap2/dmm-omap44xx.c
new file mode 100644
index 0000000..a84490c
--- /dev/null
+++ b/arch/arm/mach-omap2/dmm-omap44xx.c
@@ -0,0 +1,80 @@
+/*
+ * DMM driver support functions for TI OMAP processors.
+ *
+ * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <mach/dmm.h>
+#include <plat/omap_device.h>
+#include <plat/omap_hwmod.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+
+static struct dmm *plat_data;
+static int pdata;
+
+#ifdef CONFIG_ARCH_OMAP4
+static struct dmm omap4_plat_data[] = {
+ {
+ .oh_name = "dmm",
+ },
+};
+#define NUM_PDATA ARRAY_SIZE(omap4_plat_data)
+#else
+#define omap4_plat_data NULL
+#define NUM_PDATA 0
+#endif
+
+static struct omap_device_pm_latency omap_dmm_latency[] = {
+ [0] = {
+ .deactivate_func = omap_device_idle_hwmods,
+ .activate_func = omap_device_enable_hwmods,
+ .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
+ },
+};
+
+static s32 __init dmm_omap_init(void)
+{
+ struct omap_hwmod *oh = NULL;
+ struct omap_device *od = NULL;
+ struct omap_device_pm_latency *ohl = NULL;
+ int ohlc = 0, i = 0;
+
+ plat_data = omap4_plat_data;
+ pdata = NUM_PDATA;
+
+ for (i = 0; i < pdata; i++) {
+ struct dmm *data = &plat_data[i];
+
+ oh = omap_hwmod_lookup(data->oh_name);
+ if (!oh)
+ goto error;
+
+ data->base = oh->_mpu_rt_va;
+ ohl = omap_dmm_latency;
+ ohlc = ARRAY_SIZE(omap_dmm_latency);
+
+ od = omap_device_build(data->oh_name, i, oh, data,
+ sizeof(*data), ohl, ohlc, false);
+ if (IS_ERR(od))
+ goto error;
+ }
+ return 0;
+error:
+ return -ENODEV;
+}
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("David Sin <davidsin@ti.com>");
+device_initcall(dmm_omap_init);
--
1.7.0.4