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| author | Marek Vasut <marek.vasut@gmail.com> | 2009-07-20 22:28:50 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2009-07-20 22:30:33 -0700 |
| commit | 99fde513f57db2c8e1b202ade4be7d47033ff09b (patch) | |
| tree | 85e5bacd05e1f634f80667d3ab4135b219c10741 /drivers/input/touchscreen/wm97xx-core.c | |
| parent | b833306febc7d9b805a89aff29f1e410a64981c4 (diff) | |
| download | lwn-99fde513f57db2c8e1b202ade4be7d47033ff09b.tar.gz lwn-99fde513f57db2c8e1b202ade4be7d47033ff09b.zip | |
Input: wm97xx - add possibility to control the GPIO_STATUS shift
This patch allows tweaking the behaviour of GPIO_STATUS register
shift quirk that's in wm97xx-core. The problem with GPIO_STATUS
register being shifted by one doesn't appear on all hardware it
seems and causes problems with accelerated touchscreen drivers on
Palm hardware. Therefore an accelerated touchscreen driver can select
if the shift is/isn't happening on the hardware.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Diffstat (limited to 'drivers/input/touchscreen/wm97xx-core.c')
| -rw-r--r-- | drivers/input/touchscreen/wm97xx-core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c index 2957d48e0045..252eb11fe9db 100644 --- a/drivers/input/touchscreen/wm97xx-core.c +++ b/drivers/input/touchscreen/wm97xx-core.c @@ -204,7 +204,7 @@ void wm97xx_set_gpio(struct wm97xx *wm, u32 gpio, else reg &= ~gpio; - if (wm->id == WM9712_ID2) + if (wm->id == WM9712_ID2 && wm->variant != WM97xx_WM1613) wm97xx_reg_write(wm, AC97_GPIO_STATUS, reg << 1); else wm97xx_reg_write(wm, AC97_GPIO_STATUS, reg); @@ -307,7 +307,7 @@ static void wm97xx_pen_irq_worker(struct work_struct *work) WM97XX_GPIO_13); } - if (wm->id == WM9712_ID2) + if (wm->id == WM9712_ID2 && wm->variant != WM97xx_WM1613) wm97xx_reg_write(wm, AC97_GPIO_STATUS, (status & ~WM97XX_GPIO_13) << 1); else @@ -582,6 +582,8 @@ static int wm97xx_probe(struct device *dev) wm->id = wm97xx_reg_read(wm, AC97_VENDOR_ID2); + wm->variant = WM97xx_GENERIC; + dev_info(wm->dev, "detected a wm97%02x codec\n", wm->id & 0xff); switch (wm->id & 0xff) { |