ARM: OMAP: SmartReflex: pass device dependent data via platform data

Remove the device dependent code (ex. cpu_is_xxx()) and settings
from the driver code and instead pass them via the platform
data. This allows a clean separation of the driver code and the platform
code, as required by the move of the platform header files to
include/linux/platform_data.

Note about the smartreflex functional clocks: the smartreflex fclks
are derived from sys_clk and have the same name as the main_clk from
the hwmod entry, in order for the SmartReflex driver to request the
fclk (using clk_get(dev, "fck")).

Signed-off-by: Jean Pihet <j-pihet@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

3 files changed, 42 insertions, 39 deletions

diff --git a/arch/arm/mach-omap2/sr_device.c b/arch/arm/mach-omap2/sr_device.c
index f8217a5a4a26..a04bc25a1d26 100644
--- a/arch/arm/mach-omap2/sr_device.c
+++ b/arch/arm/mach-omap2/sr_device.c
@@ -121,6 +121,19 @@ static int __init sr_dev_init(struct omap_hwmod *oh, void *user)
         sr_data->senn_mod = 0x1;
         sr_data->senp_mod = 0x1;
 
+        if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
+                sr_data->err_weight = OMAP3430_SR_ERRWEIGHT;
+                sr_data->err_maxlimit = OMAP3430_SR_ERRMAXLIMIT;
+                sr_data->accum_data = OMAP3430_SR_ACCUMDATA;
+                if (!(strcmp(sr_data->name, "smartreflex_mpu"))) {
+                        sr_data->senn_avgweight = OMAP3430_SR1_SENNAVGWEIGHT;
+                        sr_data->senp_avgweight = OMAP3430_SR1_SENPAVGWEIGHT;
+                } else {
+                        sr_data->senn_avgweight = OMAP3430_SR2_SENNAVGWEIGHT;
+                        sr_data->senp_avgweight = OMAP3430_SR2_SENPAVGWEIGHT;
+                }
+        }
+
         sr_data->voltdm = voltdm_lookup(sr_dev_attr->sensor_voltdm_name);
         if (!sr_data->voltdm) {
                 pr_err("%s: Unable to get voltage domain pointer for VDD %s\n",
diff --git a/drivers/power/avs/smartreflex.c b/drivers/power/avs/smartreflex.c
index 24768a27e1d8..4c4519e59be4 100644
--- a/drivers/power/avs/smartreflex.c
+++ b/drivers/power/avs/smartreflex.c
@@ -130,24 +130,21 @@ static irqreturn_t sr_interrupt(int irq, void *data)
 
 static void sr_set_clk_length(struct omap_sr *sr)
 {
-        struct clk *sys_ck;
-        u32 sys_clk_speed;
+        struct clk *fck;
+        u32 fclk_speed;
 
-        if (cpu_is_omap34xx())
-                sys_ck = clk_get(NULL, "sys_ck");
-        else
-                sys_ck = clk_get(NULL, "sys_clkin_ck");
+        fck = clk_get(&sr->pdev->dev, "fck");
 
-        if (IS_ERR(sys_ck)) {
-                dev_err(&sr->pdev->dev, "%s: unable to get sys clk\n",
-                        __func__);
+        if (IS_ERR(fck)) {
+                dev_err(&sr->pdev->dev, "%s: unable to get fck for device %s\n",
+                                __func__, dev_name(&sr->pdev->dev));
                 return;
         }
 
-        sys_clk_speed = clk_get_rate(sys_ck);
-        clk_put(sys_ck);
+        fclk_speed = clk_get_rate(fck);
+        clk_put(fck);
 
-        switch (sys_clk_speed) {
+        switch (fclk_speed) {
         case 12000000:
                 sr->clk_length = SRCLKLENGTH_12MHZ_SYSCLK;
                 break;
@@ -164,34 +161,12 @@ static void sr_set_clk_length(struct omap_sr *sr)
                 sr->clk_length = SRCLKLENGTH_38MHZ_SYSCLK;
                 break;
         default:
-                dev_err(&sr->pdev->dev, "%s: Invalid sysclk value: %d\n",
-                        __func__, sys_clk_speed);
+                dev_err(&sr->pdev->dev, "%s: Invalid fclk rate: %d\n",
+                        __func__, fclk_speed);
                 break;
         }
 }
 
-static void sr_set_regfields(struct omap_sr *sr)
-{
-        /*
-         * For time being these values are defined in smartreflex.h
-         * and populated during init. May be they can be moved to board
-         * file or pmic specific data structure. In that case these structure
-         * fields will have to be populated using the pdata or pmic structure.
-         */
-        if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
-                sr->err_weight = OMAP3430_SR_ERRWEIGHT;
-                sr->err_maxlimit = OMAP3430_SR_ERRMAXLIMIT;
-                sr->accum_data = OMAP3430_SR_ACCUMDATA;
-                if (!(strcmp(sr->name, "smartreflex_mpu_iva"))) {
-                        sr->senn_avgweight = OMAP3430_SR1_SENNAVGWEIGHT;
-                        sr->senp_avgweight = OMAP3430_SR1_SENPAVGWEIGHT;
-                } else {
-                        sr->senn_avgweight = OMAP3430_SR2_SENNAVGWEIGHT;
-                        sr->senp_avgweight = OMAP3430_SR2_SENPAVGWEIGHT;
-                }
-        }
-}
-
 static void sr_start_vddautocomp(struct omap_sr *sr)
 {
         if (!sr_class || !(sr_class->enable) || !(sr_class->configure)) {
@@ -924,8 +899,14 @@ static int __init omap_sr_probe(struct platform_device *pdev)
         sr_info->nvalue_count = pdata->nvalue_count;
         sr_info->senn_mod = pdata->senn_mod;
         sr_info->senp_mod = pdata->senp_mod;
+        sr_info->err_weight = pdata->err_weight;
+        sr_info->err_maxlimit = pdata->err_maxlimit;
+        sr_info->accum_data = pdata->accum_data;
+        sr_info->senn_avgweight = pdata->senn_avgweight;
+        sr_info->senp_avgweight = pdata->senp_avgweight;
         sr_info->autocomp_active = false;
         sr_info->ip_type = pdata->ip_type;
+
         sr_info->base = ioremap(mem->start, resource_size(mem));
         if (!sr_info->base) {
                 dev_err(&pdev->dev, "%s: ioremap fail\n", __func__);
@@ -937,7 +918,6 @@ static int __init omap_sr_probe(struct platform_device *pdev)
                 sr_info->irq = irq->start;
 
         sr_set_clk_length(sr_info);
-        sr_set_regfields(sr_info);
 
         list_add(&sr_info->node, &sr_list);
 
diff --git a/include/linux/power/smartreflex.h b/include/linux/power/smartreflex.h
index 4a496ebc7d73..c0f44c2b006d 100644
--- a/include/linux/power/smartreflex.h
+++ b/include/linux/power/smartreflex.h
@@ -260,8 +260,13 @@ struct omap_sr_nvalue_table {
  *
  * @name:               instance name
  * @ip_type:            Smartreflex IP type.
- * @senp_mod:           SENPENABLE value for the sr
- * @senn_mod:           SENNENABLE value for sr
+ * @senp_mod:           SENPENABLE value of the sr CONFIG register
+ * @senn_mod:           SENNENABLE value for sr CONFIG register
+ * @err_weight          ERRWEIGHT value of the sr ERRCONFIG register
+ * @err_maxlimit        ERRMAXLIMIT value of the sr ERRCONFIG register
+ * @accum_data          ACCUMDATA value of the sr CONFIG register
+ * @senn_avgweight      SENNAVGWEIGHT value of the sr AVGWEIGHT register
+ * @senp_avgweight      SENPAVGWEIGHT value of the sr AVGWEIGHT register
  * @nvalue_count:       Number of distinct nvalues in the nvalue table
  * @enable_on_init:     whether this sr module needs to enabled at
  *                      boot up or not.
@@ -274,6 +279,11 @@ struct omap_sr_data {
         int                             ip_type;
         u32                             senp_mod;
         u32                             senn_mod;
+        u32                             err_weight;
+        u32                             err_maxlimit;
+        u32                             accum_data;
+        u32                             senn_avgweight;
+        u32                             senp_avgweight;
         int                             nvalue_count;
         bool                            enable_on_init;
         struct omap_sr_nvalue_table     *nvalue_table;