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[media] smiapp-pll: Create a structure for OP and VT limits
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OP and VT limits have identical fields, create a shared structure for
both.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Laurent Pinchart authored and Mauro Carvalho Chehab committed Oct 29, 2012
1 parent f5984bb commit 6ec84a2
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Showing 3 changed files with 58 additions and 69 deletions.
54 changes: 27 additions & 27 deletions drivers/media/i2c/smiapp-pll.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -122,7 +122,7 @@ static int __smiapp_pll_calculate(struct device *dev,
more_mul_max);
/* Don't go above the division capability of op sys clock divider. */
more_mul_max = min(more_mul_max,
limits->max_op_sys_clk_div * pll->pre_pll_clk_div
limits->op.max_sys_clk_div * pll->pre_pll_clk_div
/ div);
dev_dbg(dev, "more_mul_max: max_op_sys_clk_div check: %d\n",
more_mul_max);
Expand Down Expand Up @@ -152,7 +152,7 @@ static int __smiapp_pll_calculate(struct device *dev,

more_mul_factor = lcm(div, pll->pre_pll_clk_div) / div;
dev_dbg(dev, "more_mul_factor: %d\n", more_mul_factor);
more_mul_factor = lcm(more_mul_factor, limits->min_op_sys_clk_div);
more_mul_factor = lcm(more_mul_factor, limits->op.min_sys_clk_div);
dev_dbg(dev, "more_mul_factor: min_op_sys_clk_div: %d\n",
more_mul_factor);
i = roundup(more_mul_min, more_mul_factor);
Expand Down Expand Up @@ -220,48 +220,48 @@ static int __smiapp_pll_calculate(struct device *dev,
dev_dbg(dev, "min_vt_div: %d\n", min_vt_div);
min_vt_div = max(min_vt_div,
DIV_ROUND_UP(pll->pll_op_clk_freq_hz,
limits->max_vt_pix_clk_freq_hz));
limits->vt.max_pix_clk_freq_hz));
dev_dbg(dev, "min_vt_div: max_vt_pix_clk_freq_hz: %d\n",
min_vt_div);
min_vt_div = max_t(uint32_t, min_vt_div,
limits->min_vt_pix_clk_div
* limits->min_vt_sys_clk_div);
limits->vt.min_pix_clk_div
* limits->vt.min_sys_clk_div);
dev_dbg(dev, "min_vt_div: min_vt_clk_div: %d\n", min_vt_div);

max_vt_div = limits->max_vt_sys_clk_div * limits->max_vt_pix_clk_div;
max_vt_div = limits->vt.max_sys_clk_div * limits->vt.max_pix_clk_div;
dev_dbg(dev, "max_vt_div: %d\n", max_vt_div);
max_vt_div = min(max_vt_div,
DIV_ROUND_UP(pll->pll_op_clk_freq_hz,
limits->min_vt_pix_clk_freq_hz));
limits->vt.min_pix_clk_freq_hz));
dev_dbg(dev, "max_vt_div: min_vt_pix_clk_freq_hz: %d\n",
max_vt_div);

/*
* Find limitsits for sys_clk_div. Not all values are possible
* with all values of pix_clk_div.
*/
min_sys_div = limits->min_vt_sys_clk_div;
min_sys_div = limits->vt.min_sys_clk_div;
dev_dbg(dev, "min_sys_div: %d\n", min_sys_div);
min_sys_div = max(min_sys_div,
DIV_ROUND_UP(min_vt_div,
limits->max_vt_pix_clk_div));
limits->vt.max_pix_clk_div));
dev_dbg(dev, "min_sys_div: max_vt_pix_clk_div: %d\n", min_sys_div);
min_sys_div = max(min_sys_div,
pll->pll_op_clk_freq_hz
/ limits->max_vt_sys_clk_freq_hz);
/ limits->vt.max_sys_clk_freq_hz);
dev_dbg(dev, "min_sys_div: max_pll_op_clk_freq_hz: %d\n", min_sys_div);
min_sys_div = clk_div_even_up(min_sys_div);
dev_dbg(dev, "min_sys_div: one or even: %d\n", min_sys_div);

max_sys_div = limits->max_vt_sys_clk_div;
max_sys_div = limits->vt.max_sys_clk_div;
dev_dbg(dev, "max_sys_div: %d\n", max_sys_div);
max_sys_div = min(max_sys_div,
DIV_ROUND_UP(max_vt_div,
limits->min_vt_pix_clk_div));
limits->vt.min_pix_clk_div));
dev_dbg(dev, "max_sys_div: min_vt_pix_clk_div: %d\n", max_sys_div);
max_sys_div = min(max_sys_div,
DIV_ROUND_UP(pll->pll_op_clk_freq_hz,
limits->min_vt_pix_clk_freq_hz));
limits->vt.min_pix_clk_freq_hz));
dev_dbg(dev, "max_sys_div: min_vt_pix_clk_freq_hz: %d\n", max_sys_div);

/*
Expand All @@ -276,13 +276,13 @@ static int __smiapp_pll_calculate(struct device *dev,
sys_div += 2 - (sys_div & 1)) {
uint16_t pix_div = DIV_ROUND_UP(vt_div, sys_div);

if (pix_div < limits->min_vt_pix_clk_div
|| pix_div > limits->max_vt_pix_clk_div) {
if (pix_div < limits->vt.min_pix_clk_div
|| pix_div > limits->vt.max_pix_clk_div) {
dev_dbg(dev,
"pix_div %d too small or too big (%d--%d)\n",
pix_div,
limits->min_vt_pix_clk_div,
limits->max_vt_pix_clk_div);
limits->vt.min_pix_clk_div,
limits->vt.max_pix_clk_div);
continue;
}

Expand Down Expand Up @@ -327,36 +327,36 @@ static int __smiapp_pll_calculate(struct device *dev,
if (!rval)
rval = bounds_check(
dev, pll->op_sys_clk_div,
limits->min_op_sys_clk_div, limits->max_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->min_op_pix_clk_div, limits->max_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->min_op_sys_clk_freq_hz,
limits->max_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->min_op_pix_clk_freq_hz,
limits->max_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->min_vt_sys_clk_freq_hz,
limits->max_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->min_vt_pix_clk_freq_hz,
limits->max_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;
Expand Down
30 changes: 13 additions & 17 deletions drivers/media/i2c/smiapp-pll.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,17 @@ struct smiapp_pll {
uint32_t pixel_rate_csi;
};

struct smiapp_pll_branch_limits {
uint16_t min_sys_clk_div;
uint16_t max_sys_clk_div;
uint32_t min_sys_clk_freq_hz;
uint32_t max_sys_clk_freq_hz;
uint16_t min_pix_clk_div;
uint16_t max_pix_clk_div;
uint32_t min_pix_clk_freq_hz;
uint32_t max_pix_clk_freq_hz;
};

struct smiapp_pll_limits {
/* Strict PLL limits */
uint32_t min_ext_clk_freq_hz;
Expand All @@ -86,23 +97,8 @@ struct smiapp_pll_limits {
uint32_t min_pll_op_freq_hz;
uint32_t max_pll_op_freq_hz;

uint16_t min_vt_sys_clk_div;
uint16_t max_vt_sys_clk_div;
uint32_t min_vt_sys_clk_freq_hz;
uint32_t max_vt_sys_clk_freq_hz;
uint16_t min_vt_pix_clk_div;
uint16_t max_vt_pix_clk_div;
uint32_t min_vt_pix_clk_freq_hz;
uint32_t max_vt_pix_clk_freq_hz;

uint16_t min_op_sys_clk_div;
uint16_t max_op_sys_clk_div;
uint32_t min_op_sys_clk_freq_hz;
uint32_t max_op_sys_clk_freq_hz;
uint16_t min_op_pix_clk_div;
uint16_t max_op_pix_clk_div;
uint32_t min_op_pix_clk_freq_hz;
uint32_t max_op_pix_clk_freq_hz;
struct smiapp_pll_branch_limits vt;
struct smiapp_pll_branch_limits op;

/* Other relevant limits */
uint32_t min_line_length_pck_bin;
Expand Down
43 changes: 18 additions & 25 deletions drivers/media/i2c/smiapp/smiapp-core.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -252,23 +252,23 @@ static int smiapp_pll_update(struct smiapp_sensor *sensor)
.min_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_PLL_OP_FREQ_HZ],
.max_pll_op_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_PLL_OP_FREQ_HZ],

.min_op_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV],
.max_op_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV],
.min_op_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV],
.max_op_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV],
.min_op_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_FREQ_HZ],
.max_op_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_FREQ_HZ],
.min_op_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_FREQ_HZ],
.max_op_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_FREQ_HZ],

.min_vt_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_DIV],
.max_vt_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_DIV],
.min_vt_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_DIV],
.max_vt_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_DIV],
.min_vt_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_FREQ_HZ],
.max_vt_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_FREQ_HZ],
.min_vt_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_FREQ_HZ],
.max_vt_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_FREQ_HZ],
.op.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_DIV],
.op.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_DIV],
.op.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_DIV],
.op.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_DIV],
.op.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_SYS_CLK_FREQ_HZ],
.op.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_SYS_CLK_FREQ_HZ],
.op.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_OP_PIX_CLK_FREQ_HZ],
.op.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_OP_PIX_CLK_FREQ_HZ],

.vt.min_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_DIV],
.vt.max_sys_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_DIV],
.vt.min_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_DIV],
.vt.max_pix_clk_div = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_DIV],
.vt.min_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_SYS_CLK_FREQ_HZ],
.vt.max_sys_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_SYS_CLK_FREQ_HZ],
.vt.min_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MIN_VT_PIX_CLK_FREQ_HZ],
.vt.max_pix_clk_freq_hz = sensor->limits[SMIAPP_LIMIT_MAX_VT_PIX_CLK_FREQ_HZ],

.min_line_length_pck_bin = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK_BIN],
.min_line_length_pck = sensor->limits[SMIAPP_LIMIT_MIN_LINE_LENGTH_PCK],
Expand All @@ -283,14 +283,7 @@ static int smiapp_pll_update(struct smiapp_sensor *sensor)
* requirements regarding them are essentially the
* same as on VT ones.
*/
lim.min_op_sys_clk_div = lim.min_vt_sys_clk_div;
lim.max_op_sys_clk_div = lim.max_vt_sys_clk_div;
lim.min_op_pix_clk_div = lim.min_vt_pix_clk_div;
lim.max_op_pix_clk_div = lim.max_vt_pix_clk_div;
lim.min_op_sys_clk_freq_hz = lim.min_vt_sys_clk_freq_hz;
lim.max_op_sys_clk_freq_hz = lim.max_vt_sys_clk_freq_hz;
lim.min_op_pix_clk_freq_hz = lim.min_vt_pix_clk_freq_hz;
lim.max_op_pix_clk_freq_hz = lim.max_vt_pix_clk_freq_hz;
lim.op = lim.vt;
}

pll->binning_horizontal = sensor->binning_horizontal;
Expand Down

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