Hi, Markus Pargmann wrote: > This is the core driver for imx25 touchscreen/adc driver. The module > has one shared ADC and two different conversion queues which use the > ADC. The two queues are identical. Both can be used for general purpose > ADC but one is meant to be used for touchscreens. > > This driver is the core which manages the central components and > registers of the TSC/ADC unit. It manages the IRQs and forwards them to > the correct components. > [...] > diff --git a/drivers/mfd/fsl-imx25-tsadc.c b/drivers/mfd/fsl-imx25-tsadc.c > new file mode 100644 > index 000000000000..8e4013d57500 > --- /dev/null > +++ b/drivers/mfd/fsl-imx25-tsadc.c > @@ -0,0 +1,167 @@ [...] > +#define MX25_TGCR_POWERMODE_MASK (3 << 8) > +#define MX25_TGCR_POWERMODE_SAVE BIT(8) > +#define MX25_TGCR_POWERMODE_ON (2 << 8) > This looks a bit weird and conceals the fact, that MX25_TGCR_POWERMODE_SAVE is in fact one of the possible settings of a two bit bitfield. For consistency I would write: #define MX25_TGCR_POWERMODE_MASK (3 << 8) #define MX25_TGCR_POWERMODE_SAVE (1 << 8) #define MX25_TGCR_POWERMODE_ON (2 << 8) [...] > +#define MX25_ADCQ_CFG_YPLL_HIGH 0 > +#define MX25_ADCQ_CFG_YPLL_OFF BIT(12) > +#define MX25_ADCQ_CFG_YPLL_LOW (3 << 12) > dto. > +#define MX25_ADCQ_CFG_XNUR_HIGH 0 > +#define MX25_ADCQ_CFG_XNUR_OFF BIT(10) > +#define MX25_ADCQ_CFG_XNUR_LOW (3 << 10) > dto. > +#define MX25_ADCQ_CFG_XPUL_OFF BIT(9) > +#define MX25_ADCQ_CFG_XPUL_HIGH 0 > |#define MX25_ADCQ_CFG_XPUL_OFF (1 << 9) |#define MX25_ADCQ_CFG_XPUL_HIGH (0 << 9) would make it more clear, that these refer to the two states of the same bit. > +#define MX25_ADCQ_CFG_REFP(sel) (sel << 7) > missing () around macro argument > +#define MX25_ADCQ_CFG_REFP_YP 0 > +#define MX25_ADCQ_CFG_REFP_XP (1 << 7) > +#define MX25_ADCQ_CFG_REFP_EXT (2 << 7) > +#define MX25_ADCQ_CFG_REFP_INT (3 << 7) > +#define MX25_ADCQ_CFG_REFP_MASK (3 << 7) > see my previous comment. > +#define MX25_ADCQ_CFG_IN(sel) (sel << 4) > missing () around macro argument > +#define MX25_ADCQ_CFG_IN_XP 0 > +#define MX25_ADCQ_CFG_IN_YP (1 << 4) > +#define MX25_ADCQ_CFG_IN_XN (2 << 4) > +#define MX25_ADCQ_CFG_IN_YN (3 << 4) > see my previous comment. > +#define MX25_ADCQ_CFG_IN_WIPER (4 << 4) > +#define MX25_ADCQ_CFG_IN_AUX0 (5 << 4) > +#define MX25_ADCQ_CFG_IN_AUX1 (6 << 4) > +#define MX25_ADCQ_CFG_IN_AUX2 (7 << 4) > +#define MX25_ADCQ_CFG_REFN(sel) (sel << 2) > missing () around macro argument > +#define MX25_ADCQ_CFG_REFN_XN 0 > +#define MX25_ADCQ_CFG_REFN_YN (1 << 2) > +#define MX25_ADCQ_CFG_REFN_NGND (2 << 2) > +#define MX25_ADCQ_CFG_REFN_NGND2 (3 << 2) > +#define MX25_ADCQ_CFG_REFN_MASK (3 << 2) > see my previous comment. Lothar Waßmann -- ___________________________________________________________ Ka-Ro electronics GmbH | Pascalstraße 22 | D - 52076 Aachen Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10 Geschäftsführer: Matthias Kaussen Handelsregistereintrag: Amtsgericht Aachen, HRB 4996 www.karo-electronics.de | info@xxxxxxxxxxxxxxxxxxx ___________________________________________________________ -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
