[PATCH 01/24] Add ff-memless-next module
Add ff-memless-next module
Signed-off-by: Michal Malý
Tested-by: Elias Vanderstuyft
---
drivers/input/Kconfig | 11 +
drivers/input/Makefile|1 +
drivers/input/ff-memless-next.c | 1036 +
include/linux/input/ff-memless-next.h | 149 +
4 files changed, 1197 insertions(+)
create mode 100644 drivers/input/ff-memless-next.c
create mode 100644 include/linux/input/ff-memless-next.h
diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig
index a11ff74..3780962 100644
--- a/drivers/input/Kconfig
+++ b/drivers/input/Kconfig
@@ -38,6 +38,17 @@ config INPUT_FF_MEMLESS
To compile this driver as a module, choose M here: the
module will be called ff-memless.
+config INPUT_FF_MEMLESS_NEXT
+ tristate "New version of support for memoryless force-feedback devices"
+ help
+ Say Y here to enable a new version of support for memoryless force
+ feedback devices.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ff-memless-next.
+
config INPUT_POLLDEV
tristate "Polled input device skeleton"
help
diff --git a/drivers/input/Makefile b/drivers/input/Makefile
index 5ca3f63..b4f11f5 100644
--- a/drivers/input/Makefile
+++ b/drivers/input/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_INPUT) += input-core.o
input-core-y := input.o input-compat.o input-mt.o ff-core.o
obj-$(CONFIG_INPUT_FF_MEMLESS) += ff-memless.o
+obj-$(CONFIG_INPUT_FF_MEMLESS_NEXT)+= ff-memless-next.o
obj-$(CONFIG_INPUT_POLLDEV)+= input-polldev.o
obj-$(CONFIG_INPUT_SPARSEKMAP) += sparse-keymap.o
obj-$(CONFIG_INPUT_MATRIXKMAP) += matrix-keymap.o
diff --git a/drivers/input/ff-memless-next.c b/drivers/input/ff-memless-next.c
new file mode 100644
index 000..f343865
--- /dev/null
+++ b/drivers/input/ff-memless-next.c
@@ -0,0 +1,1036 @@
+/*
+ * Force feedback support for memoryless devices
+ *
+ * This module is based on "ff-memless" orignally written by Anssi Hannula.
+ * It is extended to support all force feedback effects currently supported
+ * by the Linux input stack.
+ * Logic of emulation of FF_RUMBLE through FF_PERIODIC provided by
+ * Elias Vanderstuyft
+ *
+ * Copyright(c) 2014 Michal "MadCatX" Maly
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Michal \"MadCatX\" Maly");
+MODULE_DESCRIPTION("Force feedback support for memoryless force feedback
devices");
+
+#define FF_MAX_EFFECTS 16
+#define FF_MIN_EFFECT_LENGTH ((1000 / CONFIG_HZ) + 1)
+#define FF_EFFECT_STARTED 1
+#define FF_EFFECT_PLAYING 2
+#define FF_EFFECT_EMULATED 3
+
+enum mlnx_emulate {
+ EMUL_NOTHING, /* Do not emulate anything */
+ EMUL_RUMBLE,/* Emulate FF_RUMBLE with FF_PERIODIC */
+ EMUL_PERIODIC /* Emulate FF_PERIODIC with FF_RUMBLE */
+};
+
+struct mlnx_effect {
+ struct ff_effect effect;
+ unsigned long flags;
+ unsigned long begin_at;
+ unsigned long stop_at;
+ unsigned long updated_at;
+ unsigned long attack_stop;
+ unsigned long fade_begin;
+ int repeat;
+};
+
+struct mlnx_device {
+ u8 combinable_playing;
+ u8 rumble_playing;
+ unsigned long update_rate_jiffies;
+ void *private;
+ struct mlnx_effect effects[FF_MAX_EFFECTS];
+ u16 gain;
+ struct timer_list timer;
+ struct input_dev *dev;
+ enum mlnx_emulate emul;
+
+ int (*control_effect)(struct input_dev *, void *,
+ const struct mlnx_effect_command *);
+};
+
+static s32 mlnx_calculate_x_force(const s32 level,
+ const u16 direction)
+{
+ s32 new = (level * -fixp_sin(direction)) >> FRAC_N;
+ pr_debug("x force: %d\n", new);
+ return new;
+}
+
+static s32 mlnx_calculate_y_force(const s32 level,
+ const u16 direction)
+{
+ s32 new = (level * fixp_cos(direction)) >> FRAC_N;
+ pr_debug("y force: %d\n", new);
+ return new;
+}
+
+static bool mlnx_is_combinable(const struct ff_effect *effect)
+{
+ switch (effect->type) {
+ case FF_CONSTANT:
+ case FF_PERIODIC:
+ case FF_RAMP:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool mlnx_is_conditional(const struct ff_effect *effect)
+{
+ switch (effect->type) {
+ case FF_DAMPER:
+ case FF_FRICTION:
+ case FF_INERTIA:
+ case FF_SPRING:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static void mlnx_clr_emulated(struct mlnx_effect *mlnxeff)
+{
+ __clear_bit(FF_EFFECT_EMULATED, >flags);
+}
+
+static void mlnx_clr_playing(struct mlnx_effect *mlnxeff)
+{
+
[PATCH 01/24] Add ff-memless-next module
Add ff-memless-next module
Signed-off-by: Michal Malý madcatxs...@devoid-pointer.net
Tested-by: Elias Vanderstuyft elias@gmail.com
---
drivers/input/Kconfig | 11 +
drivers/input/Makefile|1 +
drivers/input/ff-memless-next.c | 1036 +
include/linux/input/ff-memless-next.h | 149 +
4 files changed, 1197 insertions(+)
create mode 100644 drivers/input/ff-memless-next.c
create mode 100644 include/linux/input/ff-memless-next.h
diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig
index a11ff74..3780962 100644
--- a/drivers/input/Kconfig
+++ b/drivers/input/Kconfig
@@ -38,6 +38,17 @@ config INPUT_FF_MEMLESS
To compile this driver as a module, choose M here: the
module will be called ff-memless.
+config INPUT_FF_MEMLESS_NEXT
+ tristate New version of support for memoryless force-feedback devices
+ help
+ Say Y here to enable a new version of support for memoryless force
+ feedback devices.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ff-memless-next.
+
config INPUT_POLLDEV
tristate Polled input device skeleton
help
diff --git a/drivers/input/Makefile b/drivers/input/Makefile
index 5ca3f63..b4f11f5 100644
--- a/drivers/input/Makefile
+++ b/drivers/input/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_INPUT) += input-core.o
input-core-y := input.o input-compat.o input-mt.o ff-core.o
obj-$(CONFIG_INPUT_FF_MEMLESS) += ff-memless.o
+obj-$(CONFIG_INPUT_FF_MEMLESS_NEXT)+= ff-memless-next.o
obj-$(CONFIG_INPUT_POLLDEV)+= input-polldev.o
obj-$(CONFIG_INPUT_SPARSEKMAP) += sparse-keymap.o
obj-$(CONFIG_INPUT_MATRIXKMAP) += matrix-keymap.o
diff --git a/drivers/input/ff-memless-next.c b/drivers/input/ff-memless-next.c
new file mode 100644
index 000..f343865
--- /dev/null
+++ b/drivers/input/ff-memless-next.c
@@ -0,0 +1,1036 @@
+/*
+ * Force feedback support for memoryless devices
+ *
+ * This module is based on ff-memless orignally written by Anssi Hannula.
+ * It is extended to support all force feedback effects currently supported
+ * by the Linux input stack.
+ * Logic of emulation of FF_RUMBLE through FF_PERIODIC provided by
+ * Elias Vanderstuyft elias@gmail.com
+ *
+ * Copyright(c) 2014 Michal MadCatX Maly madcatxs...@devoid-pointer.net
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME : fmt
+
+#include linux/slab.h
+#include linux/module.h
+#include linux/mutex.h
+#include linux/spinlock.h
+#include linux/jiffies.h
+#include linux/fixp-arith.h
+#include linux/input/ff-memless-next.h
+
+MODULE_LICENSE(GPL);
+MODULE_AUTHOR(Michal \MadCatX\ Maly);
+MODULE_DESCRIPTION(Force feedback support for memoryless force feedback
devices);
+
+#define FF_MAX_EFFECTS 16
+#define FF_MIN_EFFECT_LENGTH ((1000 / CONFIG_HZ) + 1)
+#define FF_EFFECT_STARTED 1
+#define FF_EFFECT_PLAYING 2
+#define FF_EFFECT_EMULATED 3
+
+enum mlnx_emulate {
+ EMUL_NOTHING, /* Do not emulate anything */
+ EMUL_RUMBLE,/* Emulate FF_RUMBLE with FF_PERIODIC */
+ EMUL_PERIODIC /* Emulate FF_PERIODIC with FF_RUMBLE */
+};
+
+struct mlnx_effect {
+ struct ff_effect effect;
+ unsigned long flags;
+ unsigned long begin_at;
+ unsigned long stop_at;
+ unsigned long updated_at;
+ unsigned long attack_stop;
+ unsigned long fade_begin;
+ int repeat;
+};
+
+struct mlnx_device {
+ u8 combinable_playing;
+ u8 rumble_playing;
+ unsigned long update_rate_jiffies;
+ void *private;
+ struct mlnx_effect effects[FF_MAX_EFFECTS];
+ u16 gain;
+ struct timer_list timer;
+ struct input_dev *dev;
+ enum mlnx_emulate emul;
+
+ int (*control_effect)(struct input_dev *, void *,
+ const struct mlnx_effect_command *);
+};
+
+static s32 mlnx_calculate_x_force(const s32 level,
+ const u16 direction)
+{
+ s32 new = (level * -fixp_sin(direction)) FRAC_N;
+ pr_debug(x force: %d\n, new);
+ return new;
+}
+
+static s32 mlnx_calculate_y_force(const s32 level,
+ const u16 direction)
+{
+ s32 new = (level * fixp_cos(direction)) FRAC_N;
+ pr_debug(y force: %d\n, new);
+ return new;
+}
+
+static bool mlnx_is_combinable(const struct ff_effect *effect)
+{
+ switch (effect-type) {
+ case FF_CONSTANT:
+ case FF_PERIODIC:
+ case FF_RAMP:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool mlnx_is_conditional(const struct ff_effect *effect)
+{
+ switch (effect-type) {
+ case FF_DAMPER:
+ case FF_FRICTION:
+ case FF_INERTIA:
+ case FF_SPRING:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static void
