staging: sm750fb: remove unused calcPllValue2 function

The calcPllValue2 function is never called and therefore it can be
removed.

Signed-off-by: Mike Rapoport <mike.rapoport@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/sm750fb/ddk750_chip.c b/drivers/staging/sm750fb/ddk750_chip.c
index d13574906dda8e3879e1c10ac77c0962d624fde0..e987971cce28bc3fc2cf183422612c40b05df2d6 100644 (file)
--- a/drivers/staging/sm750fb/ddk750_chip.c
+++ b/drivers/staging/sm750fb/ddk750_chip.c
@@ -430,106 +430,6 @@ unsigned int calcPllValue(unsigned int request_orig, pll_value_t *pll)
        return ret;
 }
 
-unsigned int calcPllValue2(
-unsigned int ulRequestClk, /* Required pixel clock in Hz unit */
-pll_value_t *pPLL           /* Structure to hold the value to be set in PLL */
-)
-{
-       unsigned int M, N, OD, POD = 0, diff, pllClk, odPower, podPower;
-       unsigned int bestDiff = 0xffffffff; /* biggest 32 bit unsigned number */
-       unsigned int ret;
-    /* Init PLL structure to know states */
-       pPLL->M = 0;
-       pPLL->N = 0;
-       pPLL->OD = 0;
-       pPLL->POD = 0;
-
-    /* Sanity check: None at the moment */
-
-    /* Convert everything in Khz range in order to avoid calculation overflow */
-       pPLL->inputFreq /= 1000;
-       ulRequestClk /= 1000;
-
-#ifndef VALIDATION_CHIP
-    /* The maximum of post divider is 8. */
-       for (POD = 0; POD <= 3; POD++)
-#endif
-               {
-
-#ifndef VALIDATION_CHIP
-       /* MXCLK_PLL does not have post divider. */
-       if ((POD > 0) && (pPLL->clockType == MXCLK_PLL))
-               break;
-#endif
-
-       /* Work out 2 to the power of POD */
-       podPower = 1 << POD;
-
-       /* OD has only 2 bits [15:14] and its value must between 0 to 3 */
-       for (OD = 0; OD <= 3; OD++) {
-               /* Work out 2 to the power of OD */
-               odPower = 1 << OD;
-
-#ifdef VALIDATION_CHIP
-       if (odPower > 4)
-               podPower = 4;
-       else
-               podPower = odPower;
-#endif
-
-               /* N has 4 bits [11:8] and its value must between 2 and 15.
-               The N == 1 will behave differently --> Result is not correct. */
-       for (N = 2; N <= 15; N++) {
-               /* The formula for PLL is ulRequestClk = inputFreq * M / N / (2^OD)
-               In the following steps, we try to work out a best M value given the others are known.
-               To avoid decimal calculation, we use 1000 as multiplier for up to 3 decimal places of accuracy.
-               */
-               M = ulRequestClk * N * odPower * 1000 / pPLL->inputFreq;
-               M = roundedDiv(M, 1000);
-
-               /* M field has only 8 bits, reject value bigger than 8 bits */
-               if (M < 256) {
-                       /* Calculate the actual clock for a given M & N */
-                       pllClk = pPLL->inputFreq * M / N / odPower / podPower;
-
-                       /* How much are we different from the requirement */
-                       diff = absDiff(pllClk, ulRequestClk);
-
-                       if (diff < bestDiff) {
-                               bestDiff = diff;
-
-                               /* Store M and N values */
-                               pPLL->M  = M;
-                               pPLL->N  = N;
-                               pPLL->OD = OD;
-
-#ifdef VALIDATION_CHIP
-                       if (OD > 2)
-                               POD = 2;
-                       else
-                               POD = OD;
-#endif
-
-                       pPLL->POD = POD;
-                       }
-               }
-       }
-       }
-       }
-
-    /* Restore input frequency from Khz to hz unit */
-       ulRequestClk *= 1000;
-       pPLL->inputFreq = DEFAULT_INPUT_CLOCK; /* Default reference clock */
-
-    /* Return actual frequency that the PLL can set */
-       ret = calcPLL(pPLL);
-       return ret;
-}
-
-
-
-
-
 unsigned int formatPllReg(pll_value_t *pPLL)
 {
        unsigned int ulPllReg = 0;

diff --git a/drivers/staging/sm750fb/ddk750_chip.h b/drivers/staging/sm750fb/ddk750_chip.h
index d130bb8fef1fd549255386a92cf447550ddffa1f..6e87a1792c8b3589fae783c552ae16435a296679 100644 (file)
--- a/drivers/staging/sm750fb/ddk750_chip.h
+++ b/drivers/staging/sm750fb/ddk750_chip.h
@@ -73,7 +73,6 @@ initchip_param_t;
 
 logical_chip_type_t getChipType(void);
 unsigned int calcPllValue(unsigned int request, pll_value_t *pll);
-unsigned int calcPllValue2(unsigned int, pll_value_t *);
 unsigned int formatPllReg(pll_value_t *pPLL);
 void ddk750_set_mmio(void __iomem *, unsigned short, char);
 unsigned int ddk750_getVMSize(void);