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path: root/drivers/clk/st/clkgen-fsyn.c
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Diffstat (limited to 'drivers/clk/st/clkgen-fsyn.c')
-rw-r--r--drivers/clk/st/clkgen-fsyn.c481
1 files changed, 128 insertions, 353 deletions
diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c
index 09afeb85109c..14819d919df1 100644
--- a/drivers/clk/st/clkgen-fsyn.c
+++ b/drivers/clk/st/clkgen-fsyn.c
@@ -42,79 +42,6 @@ struct stm_fs {
unsigned long nsdiv;
};
-static const struct stm_fs fs216c65_rtbl[] = {
- { .mdiv = 0x1f, .pe = 0x0, .sdiv = 0x7, .nsdiv = 0 }, /* 312.5 Khz */
- { .mdiv = 0x17, .pe = 0x25ed, .sdiv = 0x1, .nsdiv = 0 }, /* 27 MHz */
- { .mdiv = 0x1a, .pe = 0x7b36, .sdiv = 0x2, .nsdiv = 1 }, /* 36.87 MHz */
- { .mdiv = 0x13, .pe = 0x0, .sdiv = 0x2, .nsdiv = 1 }, /* 48 MHz */
- { .mdiv = 0x11, .pe = 0x1c72, .sdiv = 0x1, .nsdiv = 1 }, /* 108 MHz */
-};
-
-static const struct stm_fs fs432c65_rtbl[] = {
- { .mdiv = 0x1f, .pe = 0x0, .sdiv = 0x7, .nsdiv = 0 }, /* 625 Khz */
- { .mdiv = 0x13, .pe = 0x777c, .sdiv = 0x4, .nsdiv = 1 }, /* 25.175 MHz */
- { .mdiv = 0x19, .pe = 0x4d35, .sdiv = 0x2, .nsdiv = 0 }, /* 25.200 MHz */
- { .mdiv = 0x11, .pe = 0x1c72, .sdiv = 0x4, .nsdiv = 1 }, /* 27.000 MHz */
- { .mdiv = 0x17, .pe = 0x28f5, .sdiv = 0x2, .nsdiv = 0 }, /* 27.027 MHz */
- { .mdiv = 0x16, .pe = 0x3359, .sdiv = 0x2, .nsdiv = 0 }, /* 28.320 MHz */
- { .mdiv = 0x1f, .pe = 0x2083, .sdiv = 0x3, .nsdiv = 1 }, /* 30.240 MHz */
- { .mdiv = 0x1e, .pe = 0x430d, .sdiv = 0x3, .nsdiv = 1 }, /* 31.500 MHz */
- { .mdiv = 0x17, .pe = 0x0, .sdiv = 0x3, .nsdiv = 1 }, /* 40.000 MHz */
- { .mdiv = 0x19, .pe = 0x121a, .sdiv = 0x1, .nsdiv = 0 }, /* 49.500 MHz */
- { .mdiv = 0x13, .pe = 0x6667, .sdiv = 0x3, .nsdiv = 1 }, /* 50.000 MHz */
- { .mdiv = 0x10, .pe = 0x1ee6, .sdiv = 0x3, .nsdiv = 1 }, /* 57.284 MHz */
- { .mdiv = 0x1d, .pe = 0x3b14, .sdiv = 0x2, .nsdiv = 1 }, /* 65.000 MHz */
- { .mdiv = 0x12, .pe = 0x7c65, .sdiv = 0x1, .nsdiv = 0 }, /* 71.000 MHz */
- { .mdiv = 0x19, .pe = 0xecd, .sdiv = 0x2, .nsdiv = 1 }, /* 74.176 MHz */
- { .mdiv = 0x19, .pe = 0x121a, .sdiv = 0x2, .nsdiv = 1 }, /* 74.250 MHz */
- { .mdiv = 0x19, .pe = 0x3334, .sdiv = 0x2, .nsdiv = 1 }, /* 75.000 MHz */
- { .mdiv = 0x18, .pe = 0x5138, .sdiv = 0x2, .nsdiv = 1 }, /* 78.800 MHz */
- { .mdiv = 0x1d, .pe = 0x77d, .sdiv = 0x0, .nsdiv = 0 }, /* 85.500 MHz */
- { .mdiv = 0x1c, .pe = 0x13d5, .sdiv = 0x0, .nsdiv = 0 }, /* 88.750 MHz */
- { .mdiv = 0x11, .pe = 0x1c72, .sdiv = 0x2, .nsdiv = 1 }, /* 108.000 MHz */
- { .mdiv = 0x17, .pe = 0x28f5, .sdiv = 0x0, .nsdiv = 0 }, /* 108.108 MHz */
- { .mdiv = 0x10, .pe = 0x6e26, .sdiv = 0x2, .nsdiv = 1 }, /* 118.963 MHz */
- { .mdiv = 0x15, .pe = 0x3e63, .sdiv = 0x0, .nsdiv = 0 }, /* 119.000 MHz */
- { .mdiv = 0x1c, .pe = 0x471d, .sdiv = 0x1, .nsdiv = 1 }, /* 135.000 MHz */
- { .mdiv = 0x19, .pe = 0xecd, .sdiv = 0x1, .nsdiv = 1 }, /* 148.352 MHz */
- { .mdiv = 0x19, .pe = 0x121a, .sdiv = 0x1, .nsdiv = 1 }, /* 148.500 MHz */
- { .mdiv = 0x19, .pe = 0x121a, .sdiv = 0x0, .nsdiv = 1 }, /* 297 MHz */
-};
-
-static const struct stm_fs fs660c32_rtbl[] = {
- { .mdiv = 0x14, .pe = 0x376b, .sdiv = 0x4, .nsdiv = 1 }, /* 25.175 MHz */
- { .mdiv = 0x14, .pe = 0x30c3, .sdiv = 0x4, .nsdiv = 1 }, /* 25.200 MHz */
- { .mdiv = 0x10, .pe = 0x71c7, .sdiv = 0x4, .nsdiv = 1 }, /* 27.000 MHz */
- { .mdiv = 0x00, .pe = 0x47af, .sdiv = 0x3, .nsdiv = 0 }, /* 27.027 MHz */
- { .mdiv = 0x0e, .pe = 0x4e1a, .sdiv = 0x4, .nsdiv = 1 }, /* 28.320 MHz */
- { .mdiv = 0x0b, .pe = 0x534d, .sdiv = 0x4, .nsdiv = 1 }, /* 30.240 MHz */
- { .mdiv = 0x17, .pe = 0x6fbf, .sdiv = 0x2, .nsdiv = 0 }, /* 31.500 MHz */
- { .mdiv = 0x01, .pe = 0x0, .sdiv = 0x4, .nsdiv = 1 }, /* 40.000 MHz */
- { .mdiv = 0x15, .pe = 0x2aab, .sdiv = 0x3, .nsdiv = 1 }, /* 49.500 MHz */
- { .mdiv = 0x14, .pe = 0x6666, .sdiv = 0x3, .nsdiv = 1 }, /* 50.000 MHz */
- { .mdiv = 0x1d, .pe = 0x395f, .sdiv = 0x1, .nsdiv = 0 }, /* 57.284 MHz */
- { .mdiv = 0x08, .pe = 0x4ec5, .sdiv = 0x3, .nsdiv = 1 }, /* 65.000 MHz */
- { .mdiv = 0x05, .pe = 0x1770, .sdiv = 0x3, .nsdiv = 1 }, /* 71.000 MHz */
- { .mdiv = 0x03, .pe = 0x4ba7, .sdiv = 0x3, .nsdiv = 1 }, /* 74.176 MHz */
- { .mdiv = 0x0f, .pe = 0x3426, .sdiv = 0x1, .nsdiv = 0 }, /* 74.250 MHz */
- { .mdiv = 0x0e, .pe = 0x7777, .sdiv = 0x1, .nsdiv = 0 }, /* 75.000 MHz */
- { .mdiv = 0x01, .pe = 0x4053, .sdiv = 0x3, .nsdiv = 1 }, /* 78.800 MHz */
- { .mdiv = 0x09, .pe = 0x15b5, .sdiv = 0x1, .nsdiv = 0 }, /* 85.500 MHz */
- { .mdiv = 0x1b, .pe = 0x3f19, .sdiv = 0x2, .nsdiv = 1 }, /* 88.750 MHz */
- { .mdiv = 0x10, .pe = 0x71c7, .sdiv = 0x2, .nsdiv = 1 }, /* 108.000 MHz */
- { .mdiv = 0x00, .pe = 0x47af, .sdiv = 0x1, .nsdiv = 0 }, /* 108.108 MHz */
- { .mdiv = 0x0c, .pe = 0x3118, .sdiv = 0x2, .nsdiv = 1 }, /* 118.963 MHz */
- { .mdiv = 0x0c, .pe = 0x2f54, .sdiv = 0x2, .nsdiv = 1 }, /* 119.000 MHz */
- { .mdiv = 0x07, .pe = 0xe39, .sdiv = 0x2, .nsdiv = 1 }, /* 135.000 MHz */
- { .mdiv = 0x03, .pe = 0x4ba7, .sdiv = 0x2, .nsdiv = 1 }, /* 148.352 MHz */
- { .mdiv = 0x0f, .pe = 0x3426, .sdiv = 0x0, .nsdiv = 0 }, /* 148.500 MHz */
- { .mdiv = 0x03, .pe = 0x4ba7, .sdiv = 0x1, .nsdiv = 1 }, /* 296.704 MHz */
- { .mdiv = 0x03, .pe = 0x471c, .sdiv = 0x1, .nsdiv = 1 }, /* 297.000 MHz */
- { .mdiv = 0x00, .pe = 0x295f, .sdiv = 0x1, .nsdiv = 1 }, /* 326.700 MHz */
- { .mdiv = 0x1f, .pe = 0x3633, .sdiv = 0x0, .nsdiv = 1 }, /* 333.000 MHz */
- { .mdiv = 0x1c, .pe = 0x0, .sdiv = 0x0, .nsdiv = 1 }, /* 352.000 Mhz */
-};
-
struct clkgen_quadfs_data {
bool reset_present;
bool bwfilter_present;
@@ -138,174 +65,18 @@ struct clkgen_quadfs_data {
struct clkgen_field nsdiv[QUADFS_MAX_CHAN];
const struct clk_ops *pll_ops;
- const struct stm_fs *rtbl;
- u8 rtbl_cnt;
+ int (*get_params)(unsigned long, unsigned long, struct stm_fs *);
int (*get_rate)(unsigned long , const struct stm_fs *,
unsigned long *);
};
-static const struct clk_ops st_quadfs_pll_c65_ops;
static const struct clk_ops st_quadfs_pll_c32_ops;
-static const struct clk_ops st_quadfs_fs216c65_ops;
-static const struct clk_ops st_quadfs_fs432c65_ops;
static const struct clk_ops st_quadfs_fs660c32_ops;
-static int clk_fs216c65_get_rate(unsigned long, const struct stm_fs *,
- unsigned long *);
-static int clk_fs432c65_get_rate(unsigned long, const struct stm_fs *,
- unsigned long *);
+static int clk_fs660c32_dig_get_params(unsigned long input,
+ unsigned long output, struct stm_fs *fs);
static int clk_fs660c32_dig_get_rate(unsigned long, const struct stm_fs *,
unsigned long *);
-/*
- * Values for all of the standalone instances of this clock
- * generator found in STiH415 and STiH416 SYSCFG register banks. Note
- * that the individual channel standby control bits (nsb) are in the
- * first register along with the PLL control bits.
- */
-static const struct clkgen_quadfs_data st_fs216c65_416 = {
- /* 416 specific */
- .npda = CLKGEN_FIELD(0x0, 0x1, 14),
- .nsb = { CLKGEN_FIELD(0x0, 0x1, 10),
- CLKGEN_FIELD(0x0, 0x1, 11),
- CLKGEN_FIELD(0x0, 0x1, 12),
- CLKGEN_FIELD(0x0, 0x1, 13) },
- .nsdiv_present = true,
- .nsdiv = { CLKGEN_FIELD(0x0, 0x1, 18),
- CLKGEN_FIELD(0x0, 0x1, 19),
- CLKGEN_FIELD(0x0, 0x1, 20),
- CLKGEN_FIELD(0x0, 0x1, 21) },
- .mdiv = { CLKGEN_FIELD(0x4, 0x1f, 0),
- CLKGEN_FIELD(0x14, 0x1f, 0),
- CLKGEN_FIELD(0x24, 0x1f, 0),
- CLKGEN_FIELD(0x34, 0x1f, 0) },
- .en = { CLKGEN_FIELD(0x10, 0x1, 0),
- CLKGEN_FIELD(0x20, 0x1, 0),
- CLKGEN_FIELD(0x30, 0x1, 0),
- CLKGEN_FIELD(0x40, 0x1, 0) },
- .ndiv = CLKGEN_FIELD(0x0, 0x1, 15),
- .bwfilter_present = true,
- .ref_bw = CLKGEN_FIELD(0x0, 0x3, 16),
- .pe = { CLKGEN_FIELD(0x8, 0xffff, 0),
- CLKGEN_FIELD(0x18, 0xffff, 0),
- CLKGEN_FIELD(0x28, 0xffff, 0),
- CLKGEN_FIELD(0x38, 0xffff, 0) },
- .sdiv = { CLKGEN_FIELD(0xC, 0x7, 0),
- CLKGEN_FIELD(0x1C, 0x7, 0),
- CLKGEN_FIELD(0x2C, 0x7, 0),
- CLKGEN_FIELD(0x3C, 0x7, 0) },
- .pll_ops = &st_quadfs_pll_c65_ops,
- .rtbl = fs216c65_rtbl,
- .rtbl_cnt = ARRAY_SIZE(fs216c65_rtbl),
- .get_rate = clk_fs216c65_get_rate,
-};
-
-static const struct clkgen_quadfs_data st_fs432c65_416 = {
- .npda = CLKGEN_FIELD(0x0, 0x1, 14),
- .nsb = { CLKGEN_FIELD(0x0, 0x1, 10),
- CLKGEN_FIELD(0x0, 0x1, 11),
- CLKGEN_FIELD(0x0, 0x1, 12),
- CLKGEN_FIELD(0x0, 0x1, 13) },
- .nsdiv_present = true,
- .nsdiv = { CLKGEN_FIELD(0x0, 0x1, 18),
- CLKGEN_FIELD(0x0, 0x1, 19),
- CLKGEN_FIELD(0x0, 0x1, 20),
- CLKGEN_FIELD(0x0, 0x1, 21) },
- .mdiv = { CLKGEN_FIELD(0x4, 0x1f, 0),
- CLKGEN_FIELD(0x14, 0x1f, 0),
- CLKGEN_FIELD(0x24, 0x1f, 0),
- CLKGEN_FIELD(0x34, 0x1f, 0) },
- .en = { CLKGEN_FIELD(0x10, 0x1, 0),
- CLKGEN_FIELD(0x20, 0x1, 0),
- CLKGEN_FIELD(0x30, 0x1, 0),
- CLKGEN_FIELD(0x40, 0x1, 0) },
- .ndiv = CLKGEN_FIELD(0x0, 0x1, 15),
- .bwfilter_present = true,
- .ref_bw = CLKGEN_FIELD(0x0, 0x3, 16),
- .pe = { CLKGEN_FIELD(0x8, 0xffff, 0),
- CLKGEN_FIELD(0x18, 0xffff, 0),
- CLKGEN_FIELD(0x28, 0xffff, 0),
- CLKGEN_FIELD(0x38, 0xffff, 0) },
- .sdiv = { CLKGEN_FIELD(0xC, 0x7, 0),
- CLKGEN_FIELD(0x1C, 0x7, 0),
- CLKGEN_FIELD(0x2C, 0x7, 0),
- CLKGEN_FIELD(0x3C, 0x7, 0) },
- .pll_ops = &st_quadfs_pll_c65_ops,
- .rtbl = fs432c65_rtbl,
- .rtbl_cnt = ARRAY_SIZE(fs432c65_rtbl),
- .get_rate = clk_fs432c65_get_rate,
-};
-
-static const struct clkgen_quadfs_data st_fs660c32_E_416 = {
- .npda = CLKGEN_FIELD(0x0, 0x1, 14),
- .nsb = { CLKGEN_FIELD(0x0, 0x1, 10),
- CLKGEN_FIELD(0x0, 0x1, 11),
- CLKGEN_FIELD(0x0, 0x1, 12),
- CLKGEN_FIELD(0x0, 0x1, 13) },
- .nsdiv_present = true,
- .nsdiv = { CLKGEN_FIELD(0x0, 0x1, 18),
- CLKGEN_FIELD(0x0, 0x1, 19),
- CLKGEN_FIELD(0x0, 0x1, 20),
- CLKGEN_FIELD(0x0, 0x1, 21) },
- .mdiv = { CLKGEN_FIELD(0x4, 0x1f, 0),
- CLKGEN_FIELD(0x14, 0x1f, 0),
- CLKGEN_FIELD(0x24, 0x1f, 0),
- CLKGEN_FIELD(0x34, 0x1f, 0) },
- .en = { CLKGEN_FIELD(0x10, 0x1, 0),
- CLKGEN_FIELD(0x20, 0x1, 0),
- CLKGEN_FIELD(0x30, 0x1, 0),
- CLKGEN_FIELD(0x40, 0x1, 0) },
- .ndiv = CLKGEN_FIELD(0x0, 0x7, 15),
- .pe = { CLKGEN_FIELD(0x8, 0x7fff, 0),
- CLKGEN_FIELD(0x18, 0x7fff, 0),
- CLKGEN_FIELD(0x28, 0x7fff, 0),
- CLKGEN_FIELD(0x38, 0x7fff, 0) },
- .sdiv = { CLKGEN_FIELD(0xC, 0xf, 0),
- CLKGEN_FIELD(0x1C, 0xf, 0),
- CLKGEN_FIELD(0x2C, 0xf, 0),
- CLKGEN_FIELD(0x3C, 0xf, 0) },
- .lockstatus_present = true,
- .lock_status = CLKGEN_FIELD(0xAC, 0x1, 0),
- .pll_ops = &st_quadfs_pll_c32_ops,
- .rtbl = fs660c32_rtbl,
- .rtbl_cnt = ARRAY_SIZE(fs660c32_rtbl),
- .get_rate = clk_fs660c32_dig_get_rate,
-};
-
-static const struct clkgen_quadfs_data st_fs660c32_F_416 = {
- .npda = CLKGEN_FIELD(0x0, 0x1, 14),
- .nsb = { CLKGEN_FIELD(0x0, 0x1, 10),
- CLKGEN_FIELD(0x0, 0x1, 11),
- CLKGEN_FIELD(0x0, 0x1, 12),
- CLKGEN_FIELD(0x0, 0x1, 13) },
- .nsdiv_present = true,
- .nsdiv = { CLKGEN_FIELD(0x0, 0x1, 18),
- CLKGEN_FIELD(0x0, 0x1, 19),
- CLKGEN_FIELD(0x0, 0x1, 20),
- CLKGEN_FIELD(0x0, 0x1, 21) },
- .mdiv = { CLKGEN_FIELD(0x4, 0x1f, 0),
- CLKGEN_FIELD(0x14, 0x1f, 0),
- CLKGEN_FIELD(0x24, 0x1f, 0),
- CLKGEN_FIELD(0x34, 0x1f, 0) },
- .en = { CLKGEN_FIELD(0x10, 0x1, 0),
- CLKGEN_FIELD(0x20, 0x1, 0),
- CLKGEN_FIELD(0x30, 0x1, 0),
- CLKGEN_FIELD(0x40, 0x1, 0) },
- .ndiv = CLKGEN_FIELD(0x0, 0x7, 15),
- .pe = { CLKGEN_FIELD(0x8, 0x7fff, 0),
- CLKGEN_FIELD(0x18, 0x7fff, 0),
- CLKGEN_FIELD(0x28, 0x7fff, 0),
- CLKGEN_FIELD(0x38, 0x7fff, 0) },
- .sdiv = { CLKGEN_FIELD(0xC, 0xf, 0),
- CLKGEN_FIELD(0x1C, 0xf, 0),
- CLKGEN_FIELD(0x2C, 0xf, 0),
- CLKGEN_FIELD(0x3C, 0xf, 0) },
- .lockstatus_present = true,
- .lock_status = CLKGEN_FIELD(0xEC, 0x1, 0),
- .pll_ops = &st_quadfs_pll_c32_ops,
- .rtbl = fs660c32_rtbl,
- .rtbl_cnt = ARRAY_SIZE(fs660c32_rtbl),
- .get_rate = clk_fs660c32_dig_get_rate,
-};
static const struct clkgen_quadfs_data st_fs660c32_C = {
.nrst_present = true,
@@ -345,8 +116,7 @@ static const struct clkgen_quadfs_data st_fs660c32_C = {
.powerup_polarity = 1,
.standby_polarity = 1,
.pll_ops = &st_quadfs_pll_c32_ops,
- .rtbl = fs660c32_rtbl,
- .rtbl_cnt = ARRAY_SIZE(fs660c32_rtbl),
+ .get_params = clk_fs660c32_dig_get_params,
.get_rate = clk_fs660c32_dig_get_rate,
};
@@ -388,8 +158,7 @@ static const struct clkgen_quadfs_data st_fs660c32_D = {
.powerup_polarity = 1,
.standby_polarity = 1,
.pll_ops = &st_quadfs_pll_c32_ops,
- .rtbl = fs660c32_rtbl,
- .rtbl_cnt = ARRAY_SIZE(fs660c32_rtbl),
+ .get_params = clk_fs660c32_dig_get_params,
.get_rate = clk_fs660c32_dig_get_rate,};
/**
@@ -605,12 +374,6 @@ static int quadfs_pll_fs660c32_set_rate(struct clk_hw *hw, unsigned long rate,
return 0;
}
-static const struct clk_ops st_quadfs_pll_c65_ops = {
- .enable = quadfs_pll_enable,
- .disable = quadfs_pll_disable,
- .is_enabled = quadfs_pll_is_enabled,
-};
-
static const struct clk_ops st_quadfs_pll_c32_ops = {
.enable = quadfs_pll_enable,
.disable = quadfs_pll_disable,
@@ -797,48 +560,6 @@ static int quadfs_fsynth_is_enabled(struct clk_hw *hw)
return fs->data->standby_polarity ? !nsb : !!nsb;
}
-#define P15 (uint64_t)(1 << 15)
-
-static int clk_fs216c65_get_rate(unsigned long input, const struct stm_fs *fs,
- unsigned long *rate)
-{
- uint64_t res;
- unsigned long ns;
- unsigned long nd = 8; /* ndiv stuck at 0 => val = 8 */
- unsigned long s;
- long m;
-
- m = fs->mdiv - 32;
- s = 1 << (fs->sdiv + 1);
- ns = (fs->nsdiv ? 1 : 3);
-
- res = (uint64_t)(s * ns * P15 * (uint64_t)(m + 33));
- res = res - (s * ns * fs->pe);
- *rate = div64_u64(P15 * nd * input * 32, res);
-
- return 0;
-}
-
-static int clk_fs432c65_get_rate(unsigned long input, const struct stm_fs *fs,
- unsigned long *rate)
-{
- uint64_t res;
- unsigned long nd = 16; /* ndiv value; stuck at 0 (30Mhz input) */
- long m;
- unsigned long sd;
- unsigned long ns;
-
- m = fs->mdiv - 32;
- sd = 1 << (fs->sdiv + 1);
- ns = (fs->nsdiv ? 1 : 3);
-
- res = (uint64_t)(sd * ns * P15 * (uint64_t)(m + 33));
- res = res - (sd * ns * fs->pe);
- *rate = div64_u64(P15 * nd * input * 32, res);
-
- return 0;
-}
-
#define P20 (uint64_t)(1 << 20)
static int clk_fs660c32_dig_get_rate(unsigned long input,
@@ -864,6 +585,107 @@ static int clk_fs660c32_dig_get_rate(unsigned long input,
return 0;
}
+
+static int clk_fs660c32_get_pe(int m, int si, unsigned long *deviation,
+ signed long input, unsigned long output, uint64_t *p,
+ struct stm_fs *fs)
+{
+ unsigned long new_freq, new_deviation;
+ struct stm_fs fs_tmp;
+ uint64_t val;
+
+ val = (uint64_t)output << si;
+
+ *p = (uint64_t)input * P20 - (32LL + (uint64_t)m) * val * (P20 / 32LL);
+
+ *p = div64_u64(*p, val);
+
+ if (*p > 32767LL)
+ return 1;
+
+ fs_tmp.mdiv = (unsigned long) m;
+ fs_tmp.pe = (unsigned long)*p;
+ fs_tmp.sdiv = si;
+ fs_tmp.nsdiv = 1;
+
+ clk_fs660c32_dig_get_rate(input, &fs_tmp, &new_freq);
+
+ new_deviation = abs(output - new_freq);
+
+ if (new_deviation < *deviation) {
+ fs->mdiv = m;
+ fs->pe = (unsigned long)*p;
+ fs->sdiv = si;
+ fs->nsdiv = 1;
+ *deviation = new_deviation;
+ }
+ return 0;
+}
+
+static int clk_fs660c32_dig_get_params(unsigned long input,
+ unsigned long output, struct stm_fs *fs)
+{
+ int si; /* sdiv_reg (8 downto 0) */
+ int m; /* md value */
+ unsigned long new_freq, new_deviation;
+ /* initial condition to say: "infinite deviation" */
+ unsigned long deviation = ~0;
+ uint64_t p, p1, p2; /* pe value */
+ int r1, r2;
+
+ struct stm_fs fs_tmp;
+
+ for (si = 0; (si <= 8) && deviation; si++) {
+
+ /* Boundary test to avoid useless iteration */
+ r1 = clk_fs660c32_get_pe(0, si, &deviation,
+ input, output, &p1, fs);
+ r2 = clk_fs660c32_get_pe(31, si, &deviation,
+ input, output, &p2, fs);
+
+ /* No solution */
+ if (r1 && r2 && (p1 > p2))
+ continue;
+
+ /* Try to find best deviation */
+ for (m = 1; (m < 31) && deviation; m++)
+ clk_fs660c32_get_pe(m, si, &deviation,
+ input, output, &p, fs);
+
+ }
+
+ if (deviation == ~0) /* No solution found */
+ return -1;
+
+ /* pe fine tuning if deviation not 0: +/- 2 around computed pe value */
+ if (deviation) {
+ fs_tmp.mdiv = fs->mdiv;
+ fs_tmp.sdiv = fs->sdiv;
+ fs_tmp.nsdiv = fs->nsdiv;
+
+ if (fs->pe > 2)
+ p2 = fs->pe - 2;
+ else
+ p2 = 0;
+
+ for (; p2 < 32768ll && (p2 <= (fs->pe + 2)); p2++) {
+ fs_tmp.pe = (unsigned long)p2;
+
+ clk_fs660c32_dig_get_rate(input, &fs_tmp, &new_freq);
+
+ new_deviation = abs(output - new_freq);
+
+ /* Check if this is a better solution */
+ if (new_deviation < deviation) {
+ fs->pe = (unsigned long)p2;
+ deviation = new_deviation;
+
+ }
+ }
+ }
+ return 0;
+}
+
static int quadfs_fsynt_get_hw_value_for_recalc(struct st_clk_quadfs_fsynth *fs,
struct stm_fs *params)
{
@@ -899,38 +721,14 @@ static long quadfs_find_best_rate(struct clk_hw *hw, unsigned long drate,
struct st_clk_quadfs_fsynth *fs = to_quadfs_fsynth(hw);
int (*clk_fs_get_rate)(unsigned long ,
const struct stm_fs *, unsigned long *);
- struct stm_fs prev_params;
- unsigned long prev_rate, rate = 0;
- unsigned long diff_rate, prev_diff_rate = ~0;
- int index;
+ int (*clk_fs_get_params)(unsigned long, unsigned long, struct stm_fs *);
+ unsigned long rate = 0;
clk_fs_get_rate = fs->data->get_rate;
+ clk_fs_get_params = fs->data->get_params;
- for (index = 0; index < fs->data->rtbl_cnt; index++) {
- prev_rate = rate;
-
- *params = fs->data->rtbl[index];
- prev_params = *params;
-
- clk_fs_get_rate(prate, &fs->data->rtbl[index], &rate);
-
- diff_rate = abs(drate - rate);
-
- if (diff_rate > prev_diff_rate) {
- rate = prev_rate;
- *params = prev_params;
- break;
- }
-
- prev_diff_rate = diff_rate;
-
- if (drate == rate)
- return rate;
- }
-
-
- if (index == fs->data->rtbl_cnt)
- *params = prev_params;
+ if (!clk_fs_get_params(prate, drate, params))
+ clk_fs_get_rate(prate, params, &rate);
return rate;
}
@@ -1063,34 +861,6 @@ static struct clk * __init st_clk_register_quadfs_fsynth(
return clk;
}
-static const struct of_device_id quadfs_of_match[] = {
- {
- .compatible = "st,stih416-quadfs216",
- .data = &st_fs216c65_416
- },
- {
- .compatible = "st,stih416-quadfs432",
- .data = &st_fs432c65_416
- },
- {
- .compatible = "st,stih416-quadfs660-E",
- .data = &st_fs660c32_E_416
- },
- {
- .compatible = "st,stih416-quadfs660-F",
- .data = &st_fs660c32_F_416
- },
- {
- .compatible = "st,stih407-quadfs660-C",
- .data = &st_fs660c32_C
- },
- {
- .compatible = "st,stih407-quadfs660-D",
- .data = &st_fs660c32_D
- },
- {}
-};
-
static void __init st_of_create_quadfs_fsynths(
struct device_node *np, const char *pll_name,
struct clkgen_quadfs_data *quadfs, void __iomem *reg,
@@ -1150,18 +920,14 @@ static void __init st_of_create_quadfs_fsynths(
of_clk_add_provider(np, of_clk_src_onecell_get, clk_data);
}
-static void __init st_of_quadfs_setup(struct device_node *np)
+static void __init st_of_quadfs_setup(struct device_node *np,
+ struct clkgen_quadfs_data *data)
{
- const struct of_device_id *match;
struct clk *clk;
const char *pll_name, *clk_parent_name;
void __iomem *reg;
spinlock_t *lock;
- match = of_match_node(quadfs_of_match, np);
- if (WARN_ON(!match))
- return;
-
reg = of_iomap(np, 0);
if (!reg)
return;
@@ -1180,8 +946,8 @@ static void __init st_of_quadfs_setup(struct device_node *np)
spin_lock_init(lock);
- clk = st_clk_register_quadfs_pll(pll_name, clk_parent_name,
- (struct clkgen_quadfs_data *) match->data, reg, lock);
+ clk = st_clk_register_quadfs_pll(pll_name, clk_parent_name, data,
+ reg, lock);
if (IS_ERR(clk))
goto err_exit;
else
@@ -1190,11 +956,20 @@ static void __init st_of_quadfs_setup(struct device_node *np)
__clk_get_name(clk_get_parent(clk)),
(unsigned int)clk_get_rate(clk));
- st_of_create_quadfs_fsynths(np, pll_name,
- (struct clkgen_quadfs_data *)match->data,
- reg, lock);
+ st_of_create_quadfs_fsynths(np, pll_name, data, reg, lock);
err_exit:
kfree(pll_name); /* No longer need local copy of the PLL name */
}
-CLK_OF_DECLARE(quadfs, "st,quadfs", st_of_quadfs_setup);
+
+static void __init st_of_quadfs660C_setup(struct device_node *np)
+{
+ st_of_quadfs_setup(np, (struct clkgen_quadfs_data *) &st_fs660c32_C);
+}
+CLK_OF_DECLARE(quadfs660C, "st,quadfs-pll", st_of_quadfs660C_setup);
+
+static void __init st_of_quadfs660D_setup(struct device_node *np)
+{
+ st_of_quadfs_setup(np, (struct clkgen_quadfs_data *) &st_fs660c32_D);
+}
+CLK_OF_DECLARE(quadfs660D, "st,quadfs", st_of_quadfs660D_setup);
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-25 16:40:50 +0000