From 8412a96127d2866a78dc8d73eeaedac688977f4f Mon Sep 17 00:00:00 2001 From: H Hartley Sweeten Date: Tue, 29 Apr 2014 12:59:34 -0700 Subject: [PATCH] staging: comedi: 8253.h: remove the unused i8253_cascade_ns_to_timer_*() None of the comedi drivers use the i8253_cascade_ns_to_timer_2div_old() or i8253_cascade_ns_to_timer_power() helpers to calculate the cascaded divisors. Remove them to avoid any confusion. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/drivers/8253.h | 93 --------------------------- 1 file changed, 93 deletions(-) diff --git a/drivers/staging/comedi/drivers/8253.h b/drivers/staging/comedi/drivers/8253.h index 88cd6f251dcc..fb2c9d905723 100644 --- a/drivers/staging/comedi/drivers/8253.h +++ b/drivers/staging/comedi/drivers/8253.h @@ -30,99 +30,6 @@ #define I8254_OSC_BASE_2MHZ 500 #define I8254_OSC_BASE_1MHZ 1000 -static inline void i8253_cascade_ns_to_timer_2div_old(int i8253_osc_base, - unsigned int *d1, - unsigned int *d2, - unsigned int *nanosec, - int round_mode) -{ - int divider; - int div1, div2; - int div1_glb, div2_glb, ns_glb; - int div1_lub, div2_lub, ns_lub; - int ns; - - divider = (*nanosec + i8253_osc_base / 2) / i8253_osc_base; - - /* find 2 integers 1<={x,y}<=65536 such that x*y is - close to divider */ - - div1_lub = div2_lub = 0; - div1_glb = div2_glb = 0; - - ns_glb = 0; - ns_lub = 0xffffffff; - - div2 = 0x10000; - for (div1 = divider / 65536 + 1; div1 < div2; div1++) { - div2 = divider / div1; - - ns = i8253_osc_base * div1 * div2; - if (ns <= *nanosec && ns > ns_glb) { - ns_glb = ns; - div1_glb = div1; - div2_glb = div2; - } - - div2++; - if (div2 <= 65536) { - ns = i8253_osc_base * div1 * div2; - if (ns > *nanosec && ns < ns_lub) { - ns_lub = ns; - div1_lub = div1; - div2_lub = div2; - } - } - } - - *nanosec = div1_lub * div2_lub * i8253_osc_base; - *d1 = div1_lub & 0xffff; - *d2 = div2_lub & 0xffff; - return; -} - -static inline void i8253_cascade_ns_to_timer_power(int i8253_osc_base, - unsigned int *d1, - unsigned int *d2, - unsigned int *nanosec, - int round_mode) -{ - int div1, div2; - int base; - - for (div1 = 2; div1 <= (1 << 16); div1 <<= 1) { - base = i8253_osc_base * div1; - round_mode &= TRIG_ROUND_MASK; - switch (round_mode) { - case TRIG_ROUND_NEAREST: - default: - div2 = (*nanosec + base / 2) / base; - break; - case TRIG_ROUND_DOWN: - div2 = (*nanosec) / base; - break; - case TRIG_ROUND_UP: - div2 = (*nanosec + base - 1) / base; - break; - } - if (div2 < 2) - div2 = 2; - if (div2 <= 65536) { - *nanosec = div2 * base; - *d1 = div1 & 0xffff; - *d2 = div2 & 0xffff; - return; - } - } - - /* shouldn't get here */ - div1 = 0x10000; - div2 = 0x10000; - *nanosec = div1 * div2 * i8253_osc_base; - *d1 = div1 & 0xffff; - *d2 = div2 & 0xffff; -} - static inline void i8253_cascade_ns_to_timer(int i8253_osc_base, unsigned int *d1, unsigned int *d2, -- 2.30.2