ddr: fsl: Pass mclk_ps to ddr*_compute_dimm_parameters

This is in preparation for use for generic SPD calculations.

I had to also rewrite uses of mclk_to_picos like this:

-       pdimm->trtp_ps = mclk_to_picos(c, 2);   /* By the book. */
+       pdimm->trtp_ps = mclk_ps * 2;   /* By the book. */

This is the same result as:

mclk_to_picos(c, mclk) expands to: get_memory_clk_period_ps(c) * mclk,
and that can just be rewritten as mclk_ps * mclk.

Signed-off-by: John Watts <contact@jookia.org>
Link: https://lore.barebox.org/20230121144429.3524905-3-contact@jookia.org
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

6 files changed, 18 insertions, 17 deletions

diff --git a/drivers/ddr/fsl/ddr1_dimm_params.c b/drivers/ddr/fsl/ddr1_dimm_params.c
index f5f9067073..9a7f26bd49 100644
--- a/drivers/ddr/fsl/ddr1_dimm_params.c
+++ b/drivers/ddr/fsl/ddr1_dimm_params.c
@@ -216,7 +216,7 @@ compute_derated_DDR1_CAS_latency(unsigned int mclk_ps)
  *
  * FIXME: use #define for the retvals
  */
-unsigned int ddr1_compute_dimm_parameters(struct fsl_ddr_controller *c,
+unsigned int ddr1_compute_dimm_parameters(unsigned int mclk_ps,
 					  const struct ddr1_spd_eeprom *spd,
 					  struct dimm_params *pdimm)
 {
@@ -288,15 +288,15 @@ unsigned int ddr1_compute_dimm_parameters(struct fsl_ddr_controller *c,
 
 	/* Compute CAS latencies below that defined by SPD */
 	pdimm->caslat_lowest_derated = compute_derated_DDR1_CAS_latency(
-					get_memory_clk_period_ps(c));
+					mclk_ps);
 
 	/* Compute timing parameters */
 	pdimm->trcd_ps = spd->trcd * 250;
 	pdimm->trp_ps = spd->trp * 250;
 	pdimm->tras_ps = spd->tras * 1000;
 
-	pdimm->twr_ps = mclk_to_picos(c, 3);
-	pdimm->twtr_ps = mclk_to_picos(c, 1);
+	pdimm->twr_ps = mclk_ps * 3;
+	pdimm->twtr_ps = mclk_ps * 1;
 	pdimm->trfc_ps = compute_trfc_ps_from_spd(0, spd->trfc);
 
 	pdimm->trrd_ps = spd->trrd * 250;
@@ -311,7 +311,7 @@ unsigned int ddr1_compute_dimm_parameters(struct fsl_ddr_controller *c,
 	pdimm->tdh_ps
 		= convert_bcd_hundredths_to_cycle_time_ps(spd->data_hold);
 
-	pdimm->trtp_ps = mclk_to_picos(c, 2);	/* By the book. */
+	pdimm->trtp_ps = mclk_ps * 2;	/* By the book. */
 	pdimm->tdqsq_max_ps = spd->tdqsq * 10;
 	pdimm->tqhs_ps = spd->tqhs * 10;
 
diff --git a/drivers/ddr/fsl/ddr2_dimm_params.c b/drivers/ddr/fsl/ddr2_dimm_params.c
index e33a8ded48..6f17d55c1f 100644
--- a/drivers/ddr/fsl/ddr2_dimm_params.c
+++ b/drivers/ddr/fsl/ddr2_dimm_params.c
@@ -201,7 +201,7 @@ compute_derated_DDR2_CAS_latency(unsigned int mclk_ps)
  *
  * FIXME: use #define for the retvals
  */
-unsigned int ddr2_compute_dimm_parameters(struct fsl_ddr_controller *c,
+unsigned int ddr2_compute_dimm_parameters(unsigned int mclk_ps,
 					  const struct ddr2_spd_eeprom *spd,
 					  struct dimm_params *pdimm)
 {
@@ -289,7 +289,7 @@ unsigned int ddr2_compute_dimm_parameters(struct fsl_ddr_controller *c,
 
 	/* Compute CAS latencies below that defined by SPD */
 	pdimm->caslat_lowest_derated = compute_derated_DDR2_CAS_latency(
-					get_memory_clk_period_ps(c));
+					mclk_ps);
 
 	/* Compute timing parameters */
 	pdimm->trcd_ps = spd->trcd * 250;
diff --git a/drivers/ddr/fsl/ddr3_dimm_params.c b/drivers/ddr/fsl/ddr3_dimm_params.c
index 92012a5af9..cfea35ca05 100644
--- a/drivers/ddr/fsl/ddr3_dimm_params.c
+++ b/drivers/ddr/fsl/ddr3_dimm_params.c
@@ -79,7 +79,7 @@ compute_ranksize(const struct ddr3_spd_eeprom *spd)
  * Writes the results to the struct dimm_params structure pointed by pdimm.
  *
  */
-unsigned int ddr3_compute_dimm_parameters(struct fsl_ddr_controller *c,
+unsigned int ddr3_compute_dimm_parameters(unsigned int mclk_ps,
 					 const struct ddr3_spd_eeprom *spd,
 					 struct dimm_params *pdimm)
 {
diff --git a/drivers/ddr/fsl/ddr4_dimm_params.c b/drivers/ddr/fsl/ddr4_dimm_params.c
index 0be2de8de6..41c63f3613 100644
--- a/drivers/ddr/fsl/ddr4_dimm_params.c
+++ b/drivers/ddr/fsl/ddr4_dimm_params.c
@@ -124,7 +124,7 @@ compute_ranksize(const struct ddr4_spd_eeprom *spd)
  * Writes the results to the struct dimm_params structure pointed by pdimm.
  *
  */
-unsigned int ddr4_compute_dimm_parameters(struct fsl_ddr_controller *c,
+unsigned int ddr4_compute_dimm_parameters(unsigned int mclk_ps,
 					  const struct ddr4_spd_eeprom *spd,
 					  struct dimm_params *pdimm)
 {
diff --git a/drivers/ddr/fsl/fsl_ddr.h b/drivers/ddr/fsl/fsl_ddr.h
index 459a7ee8e8..87edd10ac1 100644
--- a/drivers/ddr/fsl/fsl_ddr.h
+++ b/drivers/ddr/fsl/fsl_ddr.h
@@ -204,16 +204,16 @@ struct fsl_ddr_controller;
 
 u32 fsl_ddr_get_version(struct fsl_ddr_controller *c);
 
-unsigned int ddr1_compute_dimm_parameters(struct fsl_ddr_controller *c,
+unsigned int ddr1_compute_dimm_parameters(unsigned int mclk_ps,
 					  const struct ddr1_spd_eeprom *spd,
 					  struct dimm_params *pdimm);
-unsigned int ddr2_compute_dimm_parameters(struct fsl_ddr_controller *c,
+unsigned int ddr2_compute_dimm_parameters(unsigned int mclk_ps,
 					  const struct ddr2_spd_eeprom *spd,
 					  struct dimm_params *pdimm);
-unsigned int ddr3_compute_dimm_parameters(struct fsl_ddr_controller *c,
+unsigned int ddr3_compute_dimm_parameters(unsigned int mclk_ps,
 					  const struct ddr3_spd_eeprom *spd,
 					  struct dimm_params *pdimm);
-unsigned int ddr4_compute_dimm_parameters(struct fsl_ddr_controller *c,
+unsigned int ddr4_compute_dimm_parameters(unsigned int mclk_ps,
 					  const struct ddr4_spd_eeprom *spd,
 					  struct dimm_params *pdimm);
 void fsl_ddr_set_intl3r(const unsigned int granule_size);
diff --git a/drivers/ddr/fsl/main.c b/drivers/ddr/fsl/main.c
index aa2f2e1aa1..c70be6fcf9 100644
--- a/drivers/ddr/fsl/main.c
+++ b/drivers/ddr/fsl/main.c
@@ -238,19 +238,20 @@ static int compute_dimm_parameters(struct fsl_ddr_controller *c,
 				   struct spd_eeprom *spd,
 				   struct dimm_params *pdimm)
 {
+	unsigned int mclk_ps = get_memory_clk_period_ps(c);
 	const memctl_options_t *popts = &c->memctl_opts;
 	int ret = -EINVAL;
 
 	memset(pdimm, 0, sizeof(*pdimm));
 
 	if (is_ddr1(popts))
-		ret = ddr1_compute_dimm_parameters(c, (void *)spd, pdimm);
+		ret = ddr1_compute_dimm_parameters(mclk_ps, (void *)spd, pdimm);
 	else if (is_ddr2(popts))
-		ret = ddr2_compute_dimm_parameters(c, (void *)spd, pdimm);
+		ret = ddr2_compute_dimm_parameters(mclk_ps, (void *)spd, pdimm);
 	else if (is_ddr3(popts))
-		ret = ddr3_compute_dimm_parameters(c, (void *)spd, pdimm);
+		ret = ddr3_compute_dimm_parameters(mclk_ps, (void *)spd, pdimm);
 	else if (is_ddr4(popts))
-		ret = ddr4_compute_dimm_parameters(c, (void *)spd, pdimm);
+		ret = ddr4_compute_dimm_parameters(mclk_ps, (void *)spd, pdimm);
 
 	return ret;
 }