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[media] smiapp-pll: Separate bounds checking into a separate function 

Enough work for this function already.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
hifive-unleashed-5.1
Sakari Ailus 2014-09-15 18:35:18 -03:00 committed by Mauro Carvalho Chehab
parent c37f9bf919
commit c859470ac1
1 changed files with 59 additions and 51 deletions
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110
drivers/media/i2c/smiapp-pll.c
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@ -87,6 +87,64 @@ static void print_pll(struct device *dev, struct smiapp_pll *pll)
dev_dbg(dev, "vt_pix_clk_freq_hz \t%u\n", pll->vt_pix_clk_freq_hz);
}
static int check_all_bounds(struct device *dev,
const struct smiapp_pll_limits *limits,
struct smiapp_pll *pll)
{
int rval;
rval = bounds_check(dev, pll->pll_ip_clk_freq_hz,
limits->min_pll_ip_freq_hz,
limits->max_pll_ip_freq_hz,
"pll_ip_clk_freq_hz");
if (!rval)
rval = bounds_check(
dev, pll->pll_multiplier,
limits->min_pll_multiplier, limits->max_pll_multiplier,
"pll_multiplier");
if (!rval)
rval = bounds_check(
dev, pll->pll_op_clk_freq_hz,
limits->min_pll_op_freq_hz, limits->max_pll_op_freq_hz,
"pll_op_clk_freq_hz");
if (!rval)
rval = bounds_check(
dev, pll->op_sys_clk_div,
limits->op.min_sys_clk_div, limits->op.max_sys_clk_div,
"op_sys_clk_div");
if (!rval)
rval = bounds_check(
dev, pll->op_pix_clk_div,
limits->op.min_pix_clk_div, limits->op.max_pix_clk_div,
"op_pix_clk_div");
if (!rval)
rval = bounds_check(
dev, pll->op_sys_clk_freq_hz,
limits->op.min_sys_clk_freq_hz,
limits->op.max_sys_clk_freq_hz,
"op_sys_clk_freq_hz");
if (!rval)
rval = bounds_check(
dev, pll->op_pix_clk_freq_hz,
limits->op.min_pix_clk_freq_hz,
limits->op.max_pix_clk_freq_hz,
"op_pix_clk_freq_hz");
if (!rval)
rval = bounds_check(
dev, pll->vt_sys_clk_freq_hz,
limits->vt.min_sys_clk_freq_hz,
limits->vt.max_sys_clk_freq_hz,
"vt_sys_clk_freq_hz");
if (!rval)
rval = bounds_check(
dev, pll->vt_pix_clk_freq_hz,
limits->vt.min_pix_clk_freq_hz,
limits->vt.max_pix_clk_freq_hz,
"vt_pix_clk_freq_hz");
return rval;
}
/*
* Heuristically guess the PLL tree for a given common multiplier and
* divisor. Begin with the operational timing and continue to video
@ -117,7 +175,6 @@ static int __smiapp_pll_calculate(struct device *dev,
uint32_t min_vt_div, max_vt_div, vt_div;
uint32_t min_sys_div, max_sys_div;
unsigned int i;
int rval;
/*
* Get pre_pll_clk_div so that our pll_op_clk_freq_hz won't be
@ -323,56 +380,7 @@ static int __smiapp_pll_calculate(struct device *dev,
pll->pixel_rate_csi =
pll->op_pix_clk_freq_hz * lane_op_clock_ratio;
rval = bounds_check(dev, pll->pll_ip_clk_freq_hz,
limits->min_pll_ip_freq_hz,
limits->max_pll_ip_freq_hz,
"pll_ip_clk_freq_hz");
if (!rval)
rval = bounds_check(
dev, pll->pll_multiplier,
limits->min_pll_multiplier, limits->max_pll_multiplier,
"pll_multiplier");
if (!rval)
rval = bounds_check(
dev, pll->pll_op_clk_freq_hz,
limits->min_pll_op_freq_hz, limits->max_pll_op_freq_hz,
"pll_op_clk_freq_hz");
if (!rval)
rval = bounds_check(
dev, pll->op_sys_clk_div,
limits->op.min_sys_clk_div, limits->op.max_sys_clk_div,
"op_sys_clk_div");
if (!rval)
rval = bounds_check(
dev, pll->op_pix_clk_div,
limits->op.min_pix_clk_div, limits->op.max_pix_clk_div,
"op_pix_clk_div");
if (!rval)
rval = bounds_check(
dev, pll->op_sys_clk_freq_hz,
limits->op.min_sys_clk_freq_hz,
limits->op.max_sys_clk_freq_hz,
"op_sys_clk_freq_hz");
if (!rval)
rval = bounds_check(
dev, pll->op_pix_clk_freq_hz,
limits->op.min_pix_clk_freq_hz,
limits->op.max_pix_clk_freq_hz,
"op_pix_clk_freq_hz");
if (!rval)
rval = bounds_check(
dev, pll->vt_sys_clk_freq_hz,
limits->vt.min_sys_clk_freq_hz,
limits->vt.max_sys_clk_freq_hz,
"vt_sys_clk_freq_hz");
if (!rval)
rval = bounds_check(
dev, pll->vt_pix_clk_freq_hz,
limits->vt.min_pix_clk_freq_hz,
limits->vt.max_pix_clk_freq_hz,
"vt_pix_clk_freq_hz");
return rval;
return check_all_bounds(dev, limits, pll);
}
int smiapp_pll_calculate(struct device *dev,