From: H Hartley Sweeten Date: Fri, 1 May 2015 21:58:37 +0000 (-0700) Subject: staging: comedi: ni_stc.h: tidy up NI_M_PLL_CTRL_REG bits X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b965e6a4ab970ae9bdd2517402ea51039b061326;p=linux-beck.git staging: comedi: ni_stc.h: tidy up NI_M_PLL_CTRL_REG bits Rename the CamelCase and convert the enum into defines. Use the BIT() macro to define the bits. Convert the inline functions MSeries_PLL_Divisor_Bits() and MSeries_PLL_Multiplier_Bits() to macros. The helper function ni_mseries_get_pll_parameters() always returns valid values for the 'divisor' and 'multiplier' so the sanity checking can safely be removed. Signed-off-by: H Hartley Sweeten Reviewed-by: Ian Abbott Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/comedi/drivers/ni_mio_common.c b/drivers/staging/comedi/drivers/ni_mio_common.c index 9fef0e938626..0a1f92e43b5d 100644 --- a/drivers/staging/comedi/drivers/ni_mio_common.c +++ b/drivers/staging/comedi/drivers/ni_mio_common.c @@ -4638,10 +4638,8 @@ static int ni_mseries_get_pll_parameters(unsigned reference_period_ns, { unsigned div; unsigned best_div = 1; - static const unsigned max_div = 0x10; unsigned mult; unsigned best_mult = 1; - static const unsigned max_mult = 0x100; static const unsigned pico_per_nano = 1000; const unsigned reference_picosec = reference_period_ns * pico_per_nano; @@ -4651,8 +4649,8 @@ static int ni_mseries_get_pll_parameters(unsigned reference_period_ns, static const unsigned fudge_factor_80_to_20Mhz = 4; int best_period_picosec = 0; - for (div = 1; div <= max_div; ++div) { - for (mult = 1; mult <= max_mult; ++mult) { + for (div = 1; div <= NI_M_PLL_MAX_DIVISOR; ++div) { + for (mult = 1; mult <= NI_M_PLL_MAX_MULTIPLIER; ++mult) { unsigned new_period_ps = (reference_picosec * div) / mult; if (abs(new_period_ps - target_picosec) < @@ -4700,8 +4698,7 @@ static int ni_mseries_set_pll_master_clock(struct comedi_device *dev, devpriv->rtsi_trig_direction_reg &= ~Use_RTSI_Clock_Bit; ni_stc_writew(dev, devpriv->rtsi_trig_direction_reg, RTSI_Trig_Direction_Register); - pll_control_bits = - MSeries_PLL_Enable_Bit | MSeries_PLL_VCO_Mode_75_150MHz_Bits; + pll_control_bits = NI_M_PLL_CTRL_ENA | NI_M_PLL_CTRL_VCO_MODE_75_150MHZ; devpriv->clock_and_fout2 |= NI_M_CLK_FOUT2_TIMEBASE1_PLL | NI_M_CLK_FOUT2_TIMEBASE3_PLL; devpriv->clock_and_fout2 &= ~NI_M_CLK_FOUT2_PLL_SRC_MASK; @@ -4736,9 +4733,8 @@ static int ni_mseries_set_pll_master_clock(struct comedi_device *dev, } ni_writew(dev, devpriv->clock_and_fout2, NI_M_CLK_FOUT2_REG); - pll_control_bits |= - MSeries_PLL_Divisor_Bits(freq_divider) | - MSeries_PLL_Multiplier_Bits(freq_multiplier); + pll_control_bits |= NI_M_PLL_CTRL_DIVISOR(freq_divider) | + NI_M_PLL_CTRL_MULTIPLIER(freq_multiplier); ni_writew(dev, pll_control_bits, NI_M_PLL_CTRL_REG); devpriv->clock_source = source; diff --git a/drivers/staging/comedi/drivers/ni_stc.h b/drivers/staging/comedi/drivers/ni_stc.h index 33adb63e1634..f08124e47d5b 100644 --- a/drivers/staging/comedi/drivers/ni_stc.h +++ b/drivers/staging/comedi/drivers/ni_stc.h @@ -980,6 +980,16 @@ static const struct comedi_lrange range_ni_E_ao_ext; #define NI_M_CLK_FOUT2_PLL_SRC_STAR NI_M_CLK_FOUT2_PLL_SRC(0x14) #define NI_M_CLK_FOUT2_PLL_SRC_PXI10 NI_M_CLK_FOUT2_PLL_SRC(0x1d) #define NI_M_PLL_CTRL_REG 0x1c6 +#define NI_M_PLL_CTRL_VCO_MODE(x) (((x) & 0x3) << 13) +#define NI_M_PLL_CTRL_VCO_MODE_200_325MHZ NI_M_PLL_CTRL_VCO_MODE(0) +#define NI_M_PLL_CTRL_VCO_MODE_175_225MHZ NI_M_PLL_CTRL_VCO_MODE(1) +#define NI_M_PLL_CTRL_VCO_MODE_100_225MHZ NI_M_PLL_CTRL_VCO_MODE(2) +#define NI_M_PLL_CTRL_VCO_MODE_75_150MHZ NI_M_PLL_CTRL_VCO_MODE(3) +#define NI_M_PLL_CTRL_ENA BIT(12) +#define NI_M_PLL_MAX_DIVISOR 0x10 +#define NI_M_PLL_CTRL_DIVISOR(x) (((x) & 0xf) << 8) +#define NI_M_PLL_MAX_MULTIPLIER 0x100 +#define NI_M_PLL_CTRL_MULTIPLIER(x) (((x) & 0xff) << 0) #define NI_M_PLL_STATUS_REG 0x1c8 #define NI_M_PFI_OUT_SEL_REG(x) (0x1d0 + ((x) * 2)) #define NI_M_PFI_DI_REG 0x1dc @@ -997,34 +1007,6 @@ static const struct comedi_lrange range_ni_E_ao_ext; #define NI_M_STATIC_AI_CTRL_REG(x) ((x) ? (0x260 + (x)) : 0x064) #define NI_M_AO_REF_ATTENUATION_REG(x) (0x264 + (x)) -enum MSeries_PLL_Control_Bits { - MSeries_PLL_Enable_Bit = 0x1000, - MSeries_PLL_VCO_Mode_200_325MHz_Bits = 0x0, - MSeries_PLL_VCO_Mode_175_225MHz_Bits = 0x2000, - MSeries_PLL_VCO_Mode_100_225MHz_Bits = 0x4000, - MSeries_PLL_VCO_Mode_75_150MHz_Bits = 0x6000, -}; -static inline unsigned MSeries_PLL_Divisor_Bits(unsigned divisor) -{ - static const unsigned max_divisor = 0x10; - if (divisor < 1 || divisor > max_divisor) { - pr_err("%s: bug, invalid divisor=%i\n", __func__, divisor); - return 0; - } - return (divisor & 0xf) << 8; -} - -static inline unsigned MSeries_PLL_Multiplier_Bits(unsigned multiplier) -{ - static const unsigned max_multiplier = 0x100; - if (multiplier < 1 || multiplier > max_multiplier) { - pr_err("%s: bug, invalid multiplier=%i\n", __func__, - multiplier); - return 0; - } - return multiplier & 0xff; -} - enum MSeries_PLL_Status { MSeries_PLL_Locked_Bit = 0x1 };