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Commit 339ae552 authored by Fei Mao's avatar Fei Mao
Browse files

input: touchscreen: st: configure regulator 



Set voltage and current load for the regulators.

Change-Id: I7a26696bbd8bf5d8465fff6ae6c1482dcdaaeb21
Signed-off-by: default avatarFei Mao <feim1@codeaurora.org>
parent 2d7d9fc4

drivers/input/touchscreen/st/fts.c

+36 −0
Original line number Diff line number Diff line
@@ -59,6 +59,11 @@ 


#define LINK_KOBJ_NAME "tp"



#define FTS_DVDD_VOL_MIN 1800000

#define FTS_DVDD_VOL_MAX 1800000

#define FTS_AVDD_VOL_MIN 3000000

#define FTS_AVDD_VOL_MAX 3300000



/*

 * Uncomment to use polling mode instead of interrupt mode.

 *
@@ -4331,6 +4336,21 @@ static int fts_get_reg(struct fts_ts_info *info, bool get) 
			retval = PTR_ERR(info->pwr_reg);

			goto regulator_put;

		}



		retval = regulator_set_load(info->pwr_reg, 62000);

		if (retval < 0) {

			logError(1, "%s %s: Failed to set power load\n",

				tag, __func__);

			goto regulator_put;

		}



		retval = regulator_set_voltage(info->pwr_reg,

				FTS_DVDD_VOL_MIN, FTS_DVDD_VOL_MAX);

		if (retval < 0) {

			logError(1, "%s %s: Failed to set power voltage\n",

				tag, __func__);

			goto regulator_put;

		}

	}



	if ((bdata->bus_reg_name != NULL) && (*bdata->bus_reg_name != 0)) {
@@ -4343,6 +4363,22 @@ static int fts_get_reg(struct fts_ts_info *info, bool get) 
			retval = PTR_ERR(info->bus_reg);

			goto regulator_put;

		}



		retval = regulator_set_load(info->bus_reg, 20000);

		if (retval < 0) {

			logError(1, "%s %s: Failed to set power load\n",

				tag, __func__);

			goto regulator_put;

		}



		retval = regulator_set_voltage(info->bus_reg,

				FTS_AVDD_VOL_MIN, FTS_AVDD_VOL_MAX);



		if (retval < 0) {

			logError(1, "%s %s: Failed to set power voltage\n",

				tag, __func__);

			goto regulator_put;

		}

	}



	return 0;