On Thu, Nov 13, 2014 at 5:55 AM, Sai Masarapu <[email protected]> wrote: > On Wed, Nov 12, 2014 at 4:37 AM, <[email protected]> wrote: >>> From: Naidu Tellapati <[email protected]> >>> >>> The Pistachio SOC from Imagination Technologies includes a Pulse >>> Width Modulation DAC which produces 1 to 4 digital bit-outputs which >>> represent digital waveforms. These PWM outputs are primarily in >>> charge of controlling backlight LED devices. >>> >>> Signed-off-by: Naidu Tellapati <[email protected]> >>> Signed-off-by: Sai Masarapu <[email protected]>
>>> diff --git a/drivers/pwm/pwm-img.c b/drivers/pwm/pwm-img.c new file >>> mode 100755 index 0000000..9361dbf >>> +#define CR_PERIP_PWM_PDM_CONTROL 0x0140 /* PWM and PDM ctrl register >>> */ >>> +#define PWM_PDM_CH_CTRL_SHIFT(ch) (ch * 4) >>> + >>> +#define NUM_PWM 4 >>> +#define SUB_DIV0 1 >>> +#define SUB_DIV1 2 >>> +#define NO_SUB_DIV 0 >>> +#define SUB_DIV0_DIV1 3 >>> +#define MIN_TMBASE_STEPS 1 >>> +#define MAX_TMBASE_STEPS 65536 >>> +#define MIN_DUTY_STEPS 0 >>> +#define MAX_DUTY_STEPS 65535 > >> Please place these #defines next to their corresponding register or register >> field #define. > > Defined Macros are not related to register fields. Really? The SUB_DIV #defines are possible values for the DIVIDER field in CR_PWM_CTRL_CFG, are they not? And I believe the TMBASE and DUTY #defines specify the range of values for the DUTYCYCLE and TIMEBASE fields of the CR_PWM*_CFG registers. -- To unsubscribe from this list: send the line "unsubscribe linux-pwm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
