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Commit 095f8ed8 authored by Fenglin Wu's avatar Fenglin Wu Committed by Gerrit - the friendly Code Review server
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input: qcom-hv-haptics: Add debugfs files for more brake settings 



Add debugfs parameters per effect to enable brake and brake sine
waveform gain setting. Meanwhile, change to print the FIFO samples
with signed magnitude values so that they can be used offline to
plot pattern waveform.

Change-Id: Iaeeeedbba570333c8c4fa9793e2b4e9c1b4af09a
Signed-off-by: default avatarFenglin Wu <fenglinw@codeaurora.org>
parent 9837851f

drivers/input/misc/qcom-hv-haptics.c

+63 −9
Original line number Diff line number Diff line
@@ -502,8 +502,8 @@ static void __dump_effects(struct haptics_chip *chip) 
			pos = 0;

			pos += scnprintf(str, size, "%s", "FIFO data: ");

			for (j = 0; j < effect->fifo->num_s; j++)

				pos += scnprintf(str + pos, size - pos, "%#x ",

						effect->fifo->samples[j]);

				pos += scnprintf(str + pos, size - pos, "%d ",

						(s8)effect->fifo->samples[j]);



			dev_dbg(chip->dev, "%s\n", str);

			kfree(str);
@@ -2058,7 +2058,7 @@ static int pattern_play_rate_us_dbgfs_write(void *data, u64 val) 
}

DEFINE_DEBUGFS_ATTRIBUTE(pattern_play_rate_dbgfs_ops,

		pattern_play_rate_us_dbgfs_read,

		pattern_play_rate_us_dbgfs_write, "%lld\n");

		pattern_play_rate_us_dbgfs_write, "%llu\n");



static ssize_t fifo_s_dbgfs_read(struct file *fp,

		char __user *buf, size_t count, loff_t *ppos)
@@ -2076,7 +2076,7 @@ static ssize_t fifo_s_dbgfs_read(struct file *fp, 


	for (i = 0; i < fifo->num_s; i++)

		pos += scnprintf(kbuf + pos, size - pos,

				"0x%03x ", fifo->samples[i]);

				"%d ", (s8)fifo->samples[i]);



	pos += scnprintf(kbuf + pos, size - pos, "%s", "\n");

	rc = simple_read_from_buffer(buf, count, ppos, kbuf, pos);
@@ -2092,7 +2092,7 @@ static ssize_t fifo_s_dbgfs_write(struct file *fp, 
	struct fifo_cfg *fifo = effect->fifo;

	char *kbuf, *token;

	int rc, i = 0;

	u32 val;

	int val;

	u8 *samples;



	kbuf = kzalloc(count + 1, GFP_KERNEL);
@@ -2115,7 +2115,7 @@ static ssize_t fifo_s_dbgfs_write(struct file *fp, 
	}



	while ((token = strsep(&kbuf, " ")) != NULL) {

		rc = kstrtouint(token, 0, &val);

		rc = kstrtoint(token, 0, &val);

		if (rc < 0) {

			rc = -EINVAL;

			goto exit2;
@@ -2124,7 +2124,7 @@ static ssize_t fifo_s_dbgfs_write(struct file *fp, 
		if (val > 0xff)

			val = 0xff;



		samples[i++] = val;

		samples[i++] = (u8)val;

		/* only support fifo pattern no longer than before */

		if (i >= fifo->num_s)

			break;
@@ -2182,7 +2182,7 @@ static int fifo_period_dbgfs_write(void *data, u64 val) 


DEFINE_DEBUGFS_ATTRIBUTE(fifo_period_dbgfs_ops,

		fifo_period_dbgfs_read,

		fifo_period_dbgfs_write, "%lld\n");

		fifo_period_dbgfs_write, "%llu\n");



static ssize_t brake_s_dbgfs_read(struct file *fp,

		char __user *buf, size_t count, loff_t *ppos)
@@ -2327,6 +2327,50 @@ static const struct file_operations brake_mode_dbgfs_ops = { 
	.open = simple_open,

};



static int brake_en_dbgfs_read(void *data, u64 *val)

{

	struct haptics_effect *effect = data;



	*val = !effect->brake->disabled;



	return 0;

}



static int brake_en_dbgfs_write(void *data, u64 val)

{

	struct haptics_effect *effect = data;



	effect->brake->disabled = !val;



	return 0;

}

DEFINE_DEBUGFS_ATTRIBUTE(brake_en_dbgfs_ops,  brake_en_dbgfs_read,

		brake_en_dbgfs_write, "%llu\n");



static int brake_sine_gain_dbgfs_read(void *data, u64 *val)

{

	struct haptics_effect *effect = data;



	*val = effect->brake->sine_gain;



	return 0;

}



static int brake_sine_gain_dbgfs_write(void *data, u64 val)

{

	struct haptics_effect *effect = data;



	if (val > BRAKE_SINE_GAIN_X8)

		return -EINVAL;



	effect->brake->sine_gain = val;



	return 0;

}

DEFINE_DEBUGFS_ATTRIBUTE(brake_sine_gain_dbgfs_ops,

		brake_sine_gain_dbgfs_read,

		brake_sine_gain_dbgfs_write, "%llu\n");



static int preload_effect_idx_dbgfs_read(void *data, u64 *val)

{

	struct haptics_chip *chip = data;
@@ -2373,7 +2417,7 @@ static int preload_effect_idx_dbgfs_write(void *data, u64 val) 


DEFINE_DEBUGFS_ATTRIBUTE(preload_effect_idx_dbgfs_ops,

		preload_effect_idx_dbgfs_read,

		preload_effect_idx_dbgfs_write, "%lld\n");

		preload_effect_idx_dbgfs_write, "%llu\n");



static int haptics_add_effects_debugfs(struct haptics_effect *effect,

		struct dentry *dir)
@@ -2436,6 +2480,16 @@ static int haptics_add_effects_debugfs(struct haptics_effect *effect, 
				effect, &brake_mode_dbgfs_ops);

		if (IS_ERR(file))

			return PTR_ERR(file);



		file = debugfs_create_file_unsafe("enable", 0644, brake_dir,

				effect, &brake_en_dbgfs_ops);

		if (IS_ERR(file))

			return PTR_ERR(file);



		file = debugfs_create_file_unsafe("sine_gain", 0644, brake_dir,

				effect, &brake_sine_gain_dbgfs_ops);

		if (IS_ERR(file))

			return PTR_ERR(file);

	}



	return 0;