diff options
| -rw-r--r-- | drivers/input/touchscreen/ti_tscadc.c | 128 |
1 files changed, 82 insertions, 46 deletions
diff --git a/drivers/input/touchscreen/ti_tscadc.c b/drivers/input/touchscreen/ti_tscadc.c index d229c741d544..d198cab61a69 100644 --- a/drivers/input/touchscreen/ti_tscadc.c +++ b/drivers/input/touchscreen/ti_tscadc.c @@ -52,43 +52,79 @@ /* Register Bitfields */ #define IRQWKUP_ENB BIT(0) -#define STPENB_STEPENB 0x7FFF + +/* Step Enable */ +#define STEPENB_MASK (0x1FFFF << 0) +#define STEPENB(val) (val << 0) +#define STPENB_STEPENB STEPENB(0x7FFF) + +/* IRQ enable */ #define IRQENB_FIFO1THRES BIT(5) #define IRQENB_PENUP BIT(9) -#define STEPCONFIG_MODE_HWSYNC 0x2 -#define STEPCONFIG_SAMPLES_AVG (1 << 4) -#define STEPCONFIG_XPP (1 << 5) -#define STEPCONFIG_XNN (1 << 6) -#define STEPCONFIG_YPP (1 << 7) -#define STEPCONFIG_YNN (1 << 8) -#define STEPCONFIG_XNP (1 << 9) -#define STEPCONFIG_YPN (1 << 10) -#define STEPCONFIG_INM (1 << 18) -#define STEPCONFIG_INP (1 << 20) -#define STEPCONFIG_INP_5 (1 << 21) -#define STEPCONFIG_FIFO1 (1 << 26) -#define STEPCONFIG_OPENDLY 0xff -#define STEPCONFIG_Z1 (3 << 19) -#define STEPIDLE_INP (1 << 22) -#define STEPCHARGE_RFP (1 << 12) -#define STEPCHARGE_INM (1 << 15) -#define STEPCHARGE_INP (1 << 19) -#define STEPCHARGE_RFM (1 << 23) -#define STEPCHARGE_DELAY 0x1 -#define CNTRLREG_TSCSSENB (1 << 0) -#define CNTRLREG_STEPID (1 << 1) -#define CNTRLREG_STEPCONFIGWRT (1 << 2) -#define CNTRLREG_4WIRE (1 << 5) -#define CNTRLREG_5WIRE (1 << 6) -#define CNTRLREG_8WIRE (3 << 5) -#define CNTRLREG_TSCENB (1 << 7) -#define ADCFSM_STEPID 0x10 +/* Step Configuration */ +#define STEPCONFIG_MODE_MASK (3 << 0) +#define STEPCONFIG_MODE(val) (val << 0) +#define STEPCONFIG_MODE_HWSYNC STEPCONFIG_MODE(2) +#define STEPCONFIG_AVG_MASK (7 << 2) +#define STEPCONFIG_AVG(val) (val << 2) +#define STEPCONFIG_AVG_16 STEPCONFIG_AVG(4) +#define STEPCONFIG_XPP BIT(5) +#define STEPCONFIG_XNN BIT(6) +#define STEPCONFIG_YPP BIT(7) +#define STEPCONFIG_YNN BIT(8) +#define STEPCONFIG_XNP BIT(9) +#define STEPCONFIG_YPN BIT(10) +#define STEPCONFIG_INM_MASK (0xF << 15) +#define STEPCONFIG_INM(val) (val << 15) +#define STEPCONFIG_INM_ADCREFM STEPCONFIG_INM(8) +#define STEPCONFIG_INP_MASK (0xF << 19) +#define STEPCONFIG_INP(val) (val << 19) +#define STEPCONFIG_INP_AN2 STEPCONFIG_INP(2) +#define STEPCONFIG_INP_AN3 STEPCONFIG_INP(3) +#define STEPCONFIG_INP_AN4 STEPCONFIG_INP(4) +#define STEPCONFIG_INP_ADCREFM STEPCONFIG_INP(8) +#define STEPCONFIG_FIFO1 BIT(26) + +/* Delay register */ +#define STEPDELAY_OPEN_MASK (0x3FFFF << 0) +#define STEPDELAY_OPEN(val) (val << 0) +#define STEPCONFIG_OPENDLY STEPDELAY_OPEN(0x098) + +/* Charge Config */ +#define STEPCHARGE_RFP_MASK (7 << 12) +#define STEPCHARGE_RFP(val) (val << 12) +#define STEPCHARGE_RFP_XPUL STEPCHARGE_RFP(1) +#define STEPCHARGE_INM_MASK (0xF << 15) +#define STEPCHARGE_INM(val) (val << 15) +#define STEPCHARGE_INM_AN1 STEPCHARGE_INM(1) +#define STEPCHARGE_INP_MASK (0xF << 19) +#define STEPCHARGE_INP(val) (val << 19) +#define STEPCHARGE_INP_AN1 STEPCHARGE_INP(1) +#define STEPCHARGE_RFM_MASK (3 << 23) +#define STEPCHARGE_RFM(val) (val << 23) +#define STEPCHARGE_RFM_XNUR STEPCHARGE_RFM(1) + +/* Charge delay */ +#define CHARGEDLY_OPEN_MASK (0x3FFFF << 0) +#define CHARGEDLY_OPEN(val) (val << 0) +#define CHARGEDLY_OPENDLY CHARGEDLY_OPEN(1) + +/* Control register */ +#define CNTRLREG_TSCSSENB BIT(0) +#define CNTRLREG_STEPID BIT(1) +#define CNTRLREG_STEPCONFIGWRT BIT(2) +#define CNTRLREG_AFE_CTRL_MASK (3 << 5) +#define CNTRLREG_AFE_CTRL(val) (val << 5) +#define CNTRLREG_4WIRE CNTRLREG_AFE_CTRL(1) +#define CNTRLREG_5WIRE CNTRLREG_AFE_CTRL(2) +#define CNTRLREG_8WIRE CNTRLREG_AFE_CTRL(3) +#define CNTRLREG_TSCENB BIT(7) + +#define ADCFSM_STEPID 0x10 #define SEQ_SETTLE 275 #define ADC_CLK 3000000 #define MAX_12BIT ((1 << 12) - 1) -#define TSCADC_DELTA_X 15 -#define TSCADC_DELTA_Y 15 struct tscadc { struct input_dev *input; @@ -119,18 +155,18 @@ static void tscadc_step_config(struct tscadc *ts_dev) /* Configure the Step registers */ config = STEPCONFIG_MODE_HWSYNC | - STEPCONFIG_SAMPLES_AVG | STEPCONFIG_XPP; + STEPCONFIG_AVG_16 | STEPCONFIG_XPP; switch (ts_dev->wires) { case 4: - config |= STEPCONFIG_INP | STEPCONFIG_XNN; + config |= STEPCONFIG_INP_AN2 | STEPCONFIG_XNN; break; case 5: config |= STEPCONFIG_YNN | - STEPCONFIG_INP_5 | STEPCONFIG_XNN | + STEPCONFIG_INP_AN4 | STEPCONFIG_XNN | STEPCONFIG_YPP; break; case 8: - config |= STEPCONFIG_INP | STEPCONFIG_XNN; + config |= STEPCONFIG_INP_AN2 | STEPCONFIG_XNN; break; } @@ -141,14 +177,14 @@ static void tscadc_step_config(struct tscadc *ts_dev) config = 0; config = STEPCONFIG_MODE_HWSYNC | - STEPCONFIG_SAMPLES_AVG | STEPCONFIG_YNN | - STEPCONFIG_INM | STEPCONFIG_FIFO1; + STEPCONFIG_AVG_16 | STEPCONFIG_YNN | + STEPCONFIG_INM_ADCREFM | STEPCONFIG_FIFO1; switch (ts_dev->wires) { case 4: config |= STEPCONFIG_YPP; break; case 5: - config |= STEPCONFIG_XPP | STEPCONFIG_INP_5 | + config |= STEPCONFIG_XPP | STEPCONFIG_INP_AN4 | STEPCONFIG_XNP | STEPCONFIG_YPN; break; case 8: @@ -164,21 +200,21 @@ static void tscadc_step_config(struct tscadc *ts_dev) config = 0; /* Charge step configuration */ config = STEPCONFIG_XPP | STEPCONFIG_YNN | - STEPCHARGE_RFP | STEPCHARGE_RFM | - STEPCHARGE_INM | STEPCHARGE_INP; + STEPCHARGE_RFP_XPUL | STEPCHARGE_RFM_XNUR | + STEPCHARGE_INM_AN1 | STEPCHARGE_INP_AN1; tscadc_writel(ts_dev, REG_CHARGECONFIG, config); - tscadc_writel(ts_dev, REG_CHARGEDELAY, STEPCHARGE_DELAY); + tscadc_writel(ts_dev, REG_CHARGEDELAY, CHARGEDLY_OPENDLY); config = 0; /* Configure to calculate pressure */ config = STEPCONFIG_MODE_HWSYNC | - STEPCONFIG_SAMPLES_AVG | STEPCONFIG_YPP | - STEPCONFIG_XNN | STEPCONFIG_INM; + STEPCONFIG_AVG_16 | STEPCONFIG_YPP | + STEPCONFIG_XNN | STEPCONFIG_INM_ADCREFM; tscadc_writel(ts_dev, REG_STEPCONFIG13, config); tscadc_writel(ts_dev, REG_STEPDELAY13, STEPCONFIG_OPENDLY); - config |= STEPCONFIG_Z1 | STEPCONFIG_FIFO1; + config |= STEPCONFIG_INP_AN3 | STEPCONFIG_FIFO1; tscadc_writel(ts_dev, REG_STEPCONFIG14, config); tscadc_writel(ts_dev, REG_STEPDELAY14, STEPCONFIG_OPENDLY); @@ -190,8 +226,8 @@ static void tscadc_idle_config(struct tscadc *ts_config) unsigned int idleconfig; idleconfig = STEPCONFIG_YNN | - STEPCONFIG_INM | - STEPCONFIG_YPN | STEPIDLE_INP; + STEPCONFIG_INM_ADCREFM | + STEPCONFIG_YPN | STEPCONFIG_INP_ADCREFM; tscadc_writel(ts_config, REG_IDLECONFIG, idleconfig); } |
