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authorMarek Vašut <marek.vasut@gmail.com>2008-08-03 21:34:08 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-08-20 23:22:22 +0100
commitd9105c2b01eedb620cae96073dde4f760367817f (patch)
tree50b60caedbac9a939027f825e41a0b7cda8c7ee2 /drivers/mfd
parent6d341675f8e715464849e5d5563a72c1d39e800d (diff)
downloadblackbird-op-linux-d9105c2b01eedb620cae96073dde4f760367817f.tar.gz
blackbird-op-linux-d9105c2b01eedb620cae96073dde4f760367817f.zip
[ARM] 5184/1: Split ucb1400_ts into core and touchscreen
This patch splits ucb1400_ts into ucb1400_ts and ucb1400_core. Since this chip supports more features than only touchscreen, it was necessary to prepare it for feature addition. The previous functionality is preserved by applying this patch. [Build fixes for non-ARM by Stephen Rothwell and Takashi Iwai] Signed-off-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/Kconfig9
-rw-r--r--drivers/mfd/Makefile1
-rw-r--r--drivers/mfd/ucb1400_core.c106
3 files changed, 116 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 883e7ea31de2..371d22a98f19 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -50,6 +50,15 @@ config HTC_PASIC3
HTC Magician devices, respectively. Actual functionality is
handled by the leds-pasic3 and ds1wm drivers.
+config UCB1400_CORE
+ tristate "Philips UCB1400 Core driver"
+ help
+ This enables support for the Philips UCB1400 core functions.
+ The UCB1400 is an AC97 audio codec.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ucb1400_core.
+
config MFD_TC6393XB
bool "Support Toshiba TC6393XB"
depends on GPIOLIB && ARM
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 33daa2f45dd8..f7cfd5b4119c 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -20,3 +20,4 @@ obj-$(CONFIG_MCP_UCB1200_TS) += ucb1x00-ts.o
ifeq ($(CONFIG_SA1100_ASSABET),y)
obj-$(CONFIG_MCP_UCB1200) += ucb1x00-assabet.o
endif
+obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o
diff --git a/drivers/mfd/ucb1400_core.c b/drivers/mfd/ucb1400_core.c
new file mode 100644
index 000000000000..178159e264ce
--- /dev/null
+++ b/drivers/mfd/ucb1400_core.c
@@ -0,0 +1,106 @@
+/*
+ * Core functions for:
+ * Philips UCB1400 multifunction chip
+ *
+ * Based on ucb1400_ts.c:
+ * Author: Nicolas Pitre
+ * Created: September 25, 2006
+ * Copyright: MontaVista Software, Inc.
+ *
+ * Spliting done by: Marek Vasut <marek.vasut@gmail.com>
+ * If something doesnt work and it worked before spliting, e-mail me,
+ * dont bother Nicolas please ;-)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This code is heavily based on ucb1x00-*.c copyrighted by Russell King
+ * covering the UCB1100, UCB1200 and UCB1300.. Support for the UCB1400 has
+ * been made separate from ucb1x00-core/ucb1x00-ts on Russell's request.
+ */
+
+#include <linux/module.h>
+#include <linux/ucb1400.h>
+
+static int ucb1400_core_probe(struct device *dev)
+{
+ int err;
+ struct ucb1400 *ucb;
+ struct ucb1400_ts ucb_ts;
+ struct snd_ac97 *ac97;
+
+ memset(&ucb_ts, 0, sizeof(ucb_ts));
+
+ ucb = kzalloc(sizeof(struct ucb1400), GFP_KERNEL);
+ if (!ucb) {
+ err = -ENOMEM;
+ goto err;
+ }
+
+ dev_set_drvdata(dev, ucb);
+
+ ac97 = to_ac97_t(dev);
+
+ ucb_ts.id = ucb1400_reg_read(ac97, UCB_ID);
+ if (ucb_ts.id != UCB_ID_1400) {
+ err = -ENODEV;
+ goto err0;
+ }
+
+ /* TOUCHSCREEN */
+ ucb_ts.ac97 = ac97;
+ ucb->ucb1400_ts = platform_device_alloc("ucb1400_ts", -1);
+ if (!ucb->ucb1400_ts) {
+ err = -ENOMEM;
+ goto err0;
+ }
+ err = platform_device_add_data(ucb->ucb1400_ts, &ucb_ts,
+ sizeof(ucb_ts));
+ if (err)
+ goto err1;
+ err = platform_device_add(ucb->ucb1400_ts);
+ if (err)
+ goto err1;
+
+ return 0;
+
+err1:
+ platform_device_put(ucb->ucb1400_ts);
+err0:
+ kfree(ucb);
+err:
+ return err;
+}
+
+static int ucb1400_core_remove(struct device *dev)
+{
+ struct ucb1400 *ucb = dev_get_drvdata(dev);
+
+ platform_device_unregister(ucb->ucb1400_ts);
+ kfree(ucb);
+ return 0;
+}
+
+static struct device_driver ucb1400_core_driver = {
+ .name = "ucb1400_core",
+ .bus = &ac97_bus_type,
+ .probe = ucb1400_core_probe,
+ .remove = ucb1400_core_remove,
+};
+
+static int __init ucb1400_core_init(void)
+{
+ return driver_register(&ucb1400_core_driver);
+}
+
+static void __exit ucb1400_core_exit(void)
+{
+ driver_unregister(&ucb1400_core_driver);
+}
+
+module_init(ucb1400_core_init);
+module_exit(ucb1400_core_exit);
+
+MODULE_DESCRIPTION("Philips UCB1400 driver");
+MODULE_LICENSE("GPL");
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