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Commit 7e4d4a6f authored by Juergen Beisert's avatar Juergen Beisert Committed by Jonathan Cameron
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Staging/iio/adc/touchscreen/MXS: separate i.MX28 specific register bits 

In order to support i.MX23 and i.MX28 within one driver we need to separate the
register definitions which differ in both SoC variants.
Signed-off-by: default avatarJuergen Beisert <jbe@pengutronix.de>
Tested-by: default avatarMarek Vasut <marex@denx.de>
Acked-by: default avatarMarek Vasut <marex@denx.de>
Tested-by: default avatarLothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>

CC: linux-arm-kernel@lists.infradead.org
CC: linux-input@vger.kernel.org
CC: devel@driverdev.osuosl.org
CC: Marek Vasut <marex@denx.de>
CC: Fabio Estevam <fabio.estevam@freescale.com>
parent ccff5297
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Showing with 33 additions and 28 deletions
drivers/staging/iio/adc/mxs-lradc.c
View file @ 7e4d4a6f
......@@ -182,24 +182,29 @@ struct mxs_lradc {
};
#define LRADC_CTRL0 0x00
#define LRADC_CTRL0_TOUCH_DETECT_ENABLE (1 << 23)
#define LRADC_CTRL0_TOUCH_SCREEN_TYPE (1 << 22)
#define LRADC_CTRL0_YNNSW /* YM */ (1 << 21)
#define LRADC_CTRL0_YPNSW /* YP */ (1 << 20)
#define LRADC_CTRL0_YPPSW /* YP */ (1 << 19)
#define LRADC_CTRL0_XNNSW /* XM */ (1 << 18)
#define LRADC_CTRL0_XNPSW /* XM */ (1 << 17)
#define LRADC_CTRL0_XPPSW /* XP */ (1 << 16)
#define LRADC_CTRL0_PLATE_MASK (0x3f << 16)
# define LRADC_CTRL0_MX28_TOUCH_DETECT_ENABLE (1 << 23)
# define LRADC_CTRL0_MX28_TOUCH_SCREEN_TYPE (1 << 22)
# define LRADC_CTRL0_MX28_YNNSW /* YM */ (1 << 21)
# define LRADC_CTRL0_MX28_YPNSW /* YP */ (1 << 20)
# define LRADC_CTRL0_MX28_YPPSW /* YP */ (1 << 19)
# define LRADC_CTRL0_MX28_XNNSW /* XM */ (1 << 18)
# define LRADC_CTRL0_MX28_XNPSW /* XM */ (1 << 17)
# define LRADC_CTRL0_MX28_XPPSW /* XP */ (1 << 16)
# define LRADC_CTRL0_MX28_PLATE_MASK \
(LRADC_CTRL0_MX28_TOUCH_DETECT_ENABLE | \
LRADC_CTRL0_MX28_YNNSW | LRADC_CTRL0_MX28_YPNSW | \
LRADC_CTRL0_MX28_YPPSW | LRADC_CTRL0_MX28_XNNSW | \
LRADC_CTRL0_MX28_XNPSW | LRADC_CTRL0_MX28_XPPSW)
#define LRADC_CTRL1 0x10
#define LRADC_CTRL1_TOUCH_DETECT_IRQ_EN (1 << 24)
#define LRADC_CTRL1_LRADC_IRQ_EN(n) (1 << ((n) + 16))
#define LRADC_CTRL1_LRADC_IRQ_EN_MASK (0x1fff << 16)
#define LRADC_CTRL1_MX28_LRADC_IRQ_EN_MASK (0x1fff << 16)
#define LRADC_CTRL1_LRADC_IRQ_EN_OFFSET 16
#define LRADC_CTRL1_TOUCH_DETECT_IRQ (1 << 8)
#define LRADC_CTRL1_LRADC_IRQ(n) (1 << (n))
#define LRADC_CTRL1_LRADC_IRQ_MASK 0x1fff
#define LRADC_CTRL1_MX28_LRADC_IRQ_MASK 0x1fff
#define LRADC_CTRL1_LRADC_IRQ_OFFSET 0
#define LRADC_CTRL2 0x20
......@@ -267,7 +272,7 @@ static int mxs_lradc_read_raw(struct iio_dev *iio_dev,
* Virtual channel 0 is always used here as the others are always not
* used if doing raw sampling.
*/
writel(LRADC_CTRL1_LRADC_IRQ_EN_MASK,
writel(LRADC_CTRL1_MX28_LRADC_IRQ_EN_MASK,
lradc->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR);
writel(0xff, lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR);
......@@ -322,9 +327,9 @@ static int mxs_lradc_ts_touched(struct mxs_lradc *lradc)
uint32_t reg;
/* Enable touch detection. */
writel(LRADC_CTRL0_PLATE_MASK,
writel(LRADC_CTRL0_MX28_PLATE_MASK,
lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR);
writel(LRADC_CTRL0_TOUCH_DETECT_ENABLE,
writel(LRADC_CTRL0_MX28_TOUCH_DETECT_ENABLE,
lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_SET);
msleep(LRADC_TS_SAMPLE_DELAY_MS);
......@@ -370,21 +375,21 @@ static int32_t mxs_lradc_ts_sample(struct mxs_lradc *lradc,
*/
switch (plate) {
case LRADC_SAMPLE_X:
ctrl0 = LRADC_CTRL0_XPPSW | LRADC_CTRL0_XNNSW;
ctrl0 = LRADC_CTRL0_MX28_XPPSW | LRADC_CTRL0_MX28_XNNSW;
chan = 3;
break;
case LRADC_SAMPLE_Y:
ctrl0 = LRADC_CTRL0_YPPSW | LRADC_CTRL0_YNNSW;
ctrl0 = LRADC_CTRL0_MX28_YPPSW | LRADC_CTRL0_MX28_YNNSW;
chan = 4;
break;
case LRADC_SAMPLE_PRESSURE:
ctrl0 = LRADC_CTRL0_YPPSW | LRADC_CTRL0_XNNSW;
ctrl0 = LRADC_CTRL0_MX28_YPPSW | LRADC_CTRL0_MX28_XNNSW;
chan = 5;
break;
}
if (change) {
writel(LRADC_CTRL0_PLATE_MASK,
writel(LRADC_CTRL0_MX28_PLATE_MASK,
lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR);
writel(ctrl0, lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_SET);
......@@ -445,7 +450,7 @@ static void mxs_lradc_ts_work(struct work_struct *ts_work)
while (mxs_lradc_ts_touched(lradc)) {
/* Disable touch detector so we can sample the touchscreen. */
writel(LRADC_CTRL0_TOUCH_DETECT_ENABLE,
writel(LRADC_CTRL0_MX28_TOUCH_DETECT_ENABLE,
lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR);
if (likely(valid)) {
......@@ -494,7 +499,7 @@ static int mxs_lradc_ts_open(struct input_dev *dev)
lradc->stop_touchscreen = false;
/* Enable the touch-detect circuitry. */
writel(LRADC_CTRL0_TOUCH_DETECT_ENABLE,
writel(LRADC_CTRL0_MX28_TOUCH_DETECT_ENABLE,
lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_SET);
/* Enable the touch-detect IRQ. */
......@@ -520,7 +525,7 @@ static void mxs_lradc_ts_close(struct input_dev *dev)
lradc->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR);
/* Power-down touchscreen touch-detect circuitry. */
writel(LRADC_CTRL0_TOUCH_DETECT_ENABLE,
writel(LRADC_CTRL0_MX28_TOUCH_DETECT_ENABLE,
lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR);
}
......@@ -584,7 +589,7 @@ static irqreturn_t mxs_lradc_handle_irq(int irq, void *data)
LRADC_CTRL1_TOUCH_DETECT_IRQ_EN |
LRADC_CTRL1_TOUCH_DETECT_IRQ;
if (!(reg & LRADC_CTRL1_LRADC_IRQ_MASK))
if (!(reg & LRADC_CTRL1_MX28_LRADC_IRQ_MASK))
return IRQ_NONE;
/*
......@@ -604,7 +609,7 @@ static irqreturn_t mxs_lradc_handle_irq(int irq, void *data)
else if (reg & LRADC_CTRL1_LRADC_IRQ(0))
complete(&lradc->completion);
writel(reg & LRADC_CTRL1_LRADC_IRQ_MASK,
writel(reg & LRADC_CTRL1_MX28_LRADC_IRQ_MASK,
lradc->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR);
return IRQ_HANDLED;
......@@ -719,7 +724,7 @@ static int mxs_lradc_buffer_preenable(struct iio_dev *iio)
if (ret < 0)
goto err_buf;
writel(LRADC_CTRL1_LRADC_IRQ_EN_MASK,
writel(LRADC_CTRL1_MX28_LRADC_IRQ_EN_MASK,
lradc->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR);
writel(0xff, lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR);
......@@ -760,7 +765,7 @@ static int mxs_lradc_buffer_postdisable(struct iio_dev *iio)
lradc->base + LRADC_DELAY(0) + STMP_OFFSET_REG_CLR);
writel(0xff, lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR);
writel(LRADC_CTRL1_LRADC_IRQ_EN_MASK,
writel(LRADC_CTRL1_MX28_LRADC_IRQ_EN_MASK,
lradc->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR);
kfree(lradc->buffer);
......@@ -864,11 +869,11 @@ static int mxs_lradc_hw_init(struct mxs_lradc *lradc)
writel(0, lradc->base + LRADC_DELAY(3));
/* Configure the touchscreen type */
writel(LRADC_CTRL0_TOUCH_SCREEN_TYPE,
writel(LRADC_CTRL0_MX28_TOUCH_SCREEN_TYPE,
lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_CLR);
if (lradc->use_touchscreen == MXS_LRADC_TOUCHSCREEN_5WIRE) {
writel(LRADC_CTRL0_TOUCH_SCREEN_TYPE,
writel(LRADC_CTRL0_MX28_TOUCH_SCREEN_TYPE,
lradc->base + LRADC_CTRL0 + STMP_OFFSET_REG_SET);
}
......@@ -882,7 +887,7 @@ static void mxs_lradc_hw_stop(struct mxs_lradc *lradc)
{
int i;
writel(LRADC_CTRL1_LRADC_IRQ_EN_MASK,
writel(LRADC_CTRL1_MX28_LRADC_IRQ_EN_MASK,
lradc->base + LRADC_CTRL1 + STMP_OFFSET_REG_CLR);
for (i = 0; i < LRADC_MAX_DELAY_CHANS; i++)
......
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