diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/clk/clk-si5351.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/clk/clk-si5351.c')
-rw-r--r-- | kernel/drivers/clk/clk-si5351.c | 65 |
1 files changed, 40 insertions, 25 deletions
diff --git a/kernel/drivers/clk/clk-si5351.c b/kernel/drivers/clk/clk-si5351.c index 30335d3b9..e346b2231 100644 --- a/kernel/drivers/clk/clk-si5351.c +++ b/kernel/drivers/clk/clk-si5351.c @@ -18,7 +18,7 @@ #include <linux/module.h> #include <linux/kernel.h> -#include <linux/clkdev.h> +#include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/delay.h> #include <linux/err.h> @@ -439,7 +439,7 @@ static unsigned long si5351_pll_recalc_rate(struct clk_hw *hw, dev_dbg(&hwdata->drvdata->client->dev, "%s - %s: p1 = %lu, p2 = %lu, p3 = %lu, parent_rate = %lu, rate = %lu\n", - __func__, __clk_get_name(hwdata->hw.clk), + __func__, clk_hw_get_name(hw), hwdata->params.p1, hwdata->params.p2, hwdata->params.p3, parent_rate, (unsigned long)rate); @@ -497,7 +497,7 @@ static long si5351_pll_round_rate(struct clk_hw *hw, unsigned long rate, dev_dbg(&hwdata->drvdata->client->dev, "%s - %s: a = %lu, b = %lu, c = %lu, parent_rate = %lu, rate = %lu\n", - __func__, __clk_get_name(hwdata->hw.clk), a, b, c, + __func__, clk_hw_get_name(hw), a, b, c, *parent_rate, rate); return rate; @@ -521,7 +521,7 @@ static int si5351_pll_set_rate(struct clk_hw *hw, unsigned long rate, dev_dbg(&hwdata->drvdata->client->dev, "%s - %s: p1 = %lu, p2 = %lu, p3 = %lu, parent_rate = %lu, rate = %lu\n", - __func__, __clk_get_name(hwdata->hw.clk), + __func__, clk_hw_get_name(hw), hwdata->params.p1, hwdata->params.p2, hwdata->params.p3, parent_rate, rate); @@ -552,7 +552,8 @@ static const struct clk_ops si5351_pll_ops = { * MSx_P2[19:0] = 128 * b - c * floor(128 * b/c) = (128*b) mod c * MSx_P3[19:0] = c * - * MS[6,7] are integer (P1) divide only, P2 = 0, P3 = 0 + * MS[6,7] are integer (P1) divide only, P1 = divide value, + * P2 and P3 are not applicable * * for 150MHz < fOUT <= 160MHz: * @@ -606,9 +607,6 @@ static unsigned long si5351_msynth_recalc_rate(struct clk_hw *hw, if (!hwdata->params.valid) si5351_read_parameters(hwdata->drvdata, reg, &hwdata->params); - if (hwdata->params.p3 == 0) - return parent_rate; - /* * multisync0-5: fOUT = (128 * P3 * fIN) / (P1*P3 + P2 + 512*P3) * multisync6-7: fOUT = fIN / P1 @@ -616,6 +614,8 @@ static unsigned long si5351_msynth_recalc_rate(struct clk_hw *hw, rate = parent_rate; if (hwdata->num > 5) { m = hwdata->params.p1; + } else if (hwdata->params.p3 == 0) { + return parent_rate; } else if ((si5351_reg_read(hwdata->drvdata, reg + 2) & SI5351_OUTPUT_CLK_DIVBY4) == SI5351_OUTPUT_CLK_DIVBY4) { m = 4; @@ -632,7 +632,7 @@ static unsigned long si5351_msynth_recalc_rate(struct clk_hw *hw, dev_dbg(&hwdata->drvdata->client->dev, "%s - %s: p1 = %lu, p2 = %lu, p3 = %lu, m = %lu, parent_rate = %lu, rate = %lu\n", - __func__, __clk_get_name(hwdata->hw.clk), + __func__, clk_hw_get_name(hw), hwdata->params.p1, hwdata->params.p2, hwdata->params.p3, m, parent_rate, (unsigned long)rate); @@ -663,7 +663,7 @@ static long si5351_msynth_round_rate(struct clk_hw *hw, unsigned long rate, divby4 = 1; /* multisync can set pll */ - if (__clk_get_flags(hwdata->hw.clk) & CLK_SET_RATE_PARENT) { + if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) { /* * find largest integer divider for max * vco frequency and given target rate @@ -679,6 +679,16 @@ static long si5351_msynth_round_rate(struct clk_hw *hw, unsigned long rate, c = 1; *parent_rate = a * rate; + } else if (hwdata->num >= 6) { + /* determine the closest integer divider */ + a = DIV_ROUND_CLOSEST(*parent_rate, rate); + if (a < SI5351_MULTISYNTH_A_MIN) + a = SI5351_MULTISYNTH_A_MIN; + if (a > SI5351_MULTISYNTH67_A_MAX) + a = SI5351_MULTISYNTH67_A_MAX; + + b = 0; + c = 1; } else { unsigned long rfrac, denom; @@ -692,9 +702,7 @@ static long si5351_msynth_round_rate(struct clk_hw *hw, unsigned long rate, a = *parent_rate / rate; if (a < SI5351_MULTISYNTH_A_MIN) a = SI5351_MULTISYNTH_A_MIN; - if (hwdata->num >= 6 && a > SI5351_MULTISYNTH67_A_MAX) - a = SI5351_MULTISYNTH67_A_MAX; - else if (a > SI5351_MULTISYNTH_A_MAX) + if (a > SI5351_MULTISYNTH_A_MAX) a = SI5351_MULTISYNTH_A_MAX; /* find best approximation for b/c = fVCO mod fOUT */ @@ -723,6 +731,10 @@ static long si5351_msynth_round_rate(struct clk_hw *hw, unsigned long rate, hwdata->params.p3 = 1; hwdata->params.p2 = 0; hwdata->params.p1 = 0; + } else if (hwdata->num >= 6) { + hwdata->params.p3 = 0; + hwdata->params.p2 = 0; + hwdata->params.p1 = a; } else { hwdata->params.p3 = c; hwdata->params.p2 = (128 * b) % c; @@ -733,7 +745,7 @@ static long si5351_msynth_round_rate(struct clk_hw *hw, unsigned long rate, dev_dbg(&hwdata->drvdata->client->dev, "%s - %s: a = %lu, b = %lu, c = %lu, divby4 = %d, parent_rate = %lu, rate = %lu\n", - __func__, __clk_get_name(hwdata->hw.clk), a, b, c, divby4, + __func__, clk_hw_get_name(hw), a, b, c, divby4, *parent_rate, rate); return rate; @@ -765,7 +777,7 @@ static int si5351_msynth_set_rate(struct clk_hw *hw, unsigned long rate, dev_dbg(&hwdata->drvdata->client->dev, "%s - %s: p1 = %lu, p2 = %lu, p3 = %lu, divby4 = %d, parent_rate = %lu, rate = %lu\n", - __func__, __clk_get_name(hwdata->hw.clk), + __func__, clk_hw_get_name(hw), hwdata->params.p1, hwdata->params.p2, hwdata->params.p3, divby4, parent_rate, rate); @@ -1001,7 +1013,7 @@ static long si5351_clkout_round_rate(struct clk_hw *hw, unsigned long rate, rate = SI5351_CLKOUT_MIN_FREQ; /* request frequency if multisync master */ - if (__clk_get_flags(hwdata->hw.clk) & CLK_SET_RATE_PARENT) { + if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) { /* use r divider for frequencies below 1MHz */ rdiv = SI5351_OUTPUT_CLK_DIV_1; while (rate < SI5351_MULTISYNTH_MIN_FREQ && @@ -1030,7 +1042,7 @@ static long si5351_clkout_round_rate(struct clk_hw *hw, unsigned long rate, dev_dbg(&hwdata->drvdata->client->dev, "%s - %s: rdiv = %u, parent_rate = %lu, rate = %lu\n", - __func__, __clk_get_name(hwdata->hw.clk), (1 << rdiv), + __func__, clk_hw_get_name(hw), (1 << rdiv), *parent_rate, rate); return rate; @@ -1081,7 +1093,7 @@ static int si5351_clkout_set_rate(struct clk_hw *hw, unsigned long rate, dev_dbg(&hwdata->drvdata->client->dev, "%s - %s: rdiv = %u, parent_rate = %lu, rate = %lu\n", - __func__, __clk_get_name(hwdata->hw.clk), (1 << rdiv), + __func__, clk_hw_get_name(hw), (1 << rdiv), parent_rate, rate); return 0; @@ -1171,13 +1183,13 @@ static int si5351_dt_parse(struct i2c_client *client, if (of_property_read_u32(child, "reg", &num)) { dev_err(&client->dev, "missing reg property of %s\n", child->name); - return -EINVAL; + goto put_child; } if (num >= 8 || (variant == SI5351_VARIANT_A3 && num >= 3)) { dev_err(&client->dev, "invalid clkout %d\n", num); - return -EINVAL; + goto put_child; } if (!of_property_read_u32(child, "silabs,multisynth-source", @@ -1195,7 +1207,7 @@ static int si5351_dt_parse(struct i2c_client *client, dev_err(&client->dev, "invalid parent %d for multisynth %d\n", val, num); - return -EINVAL; + goto put_child; } } @@ -1218,7 +1230,7 @@ static int si5351_dt_parse(struct i2c_client *client, dev_err(&client->dev, "invalid parent %d for clkout %d\n", val, num); - return -EINVAL; + goto put_child; } pdata->clkout[num].clkout_src = SI5351_CLKOUT_SRC_CLKIN; @@ -1227,7 +1239,7 @@ static int si5351_dt_parse(struct i2c_client *client, dev_err(&client->dev, "invalid parent %d for clkout %d\n", val, num); - return -EINVAL; + goto put_child; } } @@ -1244,7 +1256,7 @@ static int si5351_dt_parse(struct i2c_client *client, dev_err(&client->dev, "invalid drive strength %d for clkout %d\n", val, num); - return -EINVAL; + goto put_child; } } @@ -1271,7 +1283,7 @@ static int si5351_dt_parse(struct i2c_client *client, dev_err(&client->dev, "invalid disable state %d for clkout %d\n", val, num); - return -EINVAL; + goto put_child; } } @@ -1284,6 +1296,9 @@ static int si5351_dt_parse(struct i2c_client *client, client->dev.platform_data = pdata; return 0; +put_child: + of_node_put(child); + return -EINVAL; } #else static int si5351_dt_parse(struct i2c_client *client, enum si5351_variant variant) |