clk: at91: clk-master: add register definition for sama7g5's master clock

SAMA7G5 has 4 master clocks (MCK1..4) which are controlled though the
register at offset 0x30 (relative to PMC). In the last/first phase of
suspend/resume procedure (which is architecture specific) the parent
of master clocks are changed (via assembly code) for more power saving
(see file arch/arm/mach-at91/pm_suspend.S, macros at91_mckx_ps_enable
and at91_mckx_ps_restore). Thus the macros corresponding to register
at offset 0x30 need to be shared b/w clk-master.c and pm_suspend.S.
commit ec03f18cc222 ("clk: at91: add register definition for sama7g5's
master clock") introduced the proper macros but didn't adapted the
clk-master.c as well. Thus, this commit adapt the clk-master.c to use
the macros introduced in commit ec03f18cc222 ("clk: at91: add register
definition for sama7g5's master clock").

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20211011112719.3951784-5-claudiu.beznea@microchip.com
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/at91/clk-master.c b/drivers/clk/at91/clk-master.c
index f75549f..88f7af1 100644 (file)
--- a/drivers/clk/at91/clk-master.c
+++ b/drivers/clk/at91/clk-master.c
@@ -17,15 +17,7 @@
 #define MASTER_DIV_SHIFT       8
 #define MASTER_DIV_MASK                0x7
 
-#define PMC_MCR                        0x30
-#define PMC_MCR_ID_MSK         GENMASK(3, 0)
-#define PMC_MCR_CMD            BIT(7)
-#define PMC_MCR_DIV            GENMASK(10, 8)
-#define PMC_MCR_CSS            GENMASK(20, 16)
 #define PMC_MCR_CSS_SHIFT      (16)
-#define PMC_MCR_EN             BIT(28)
-
-#define PMC_MCR_ID(x)          ((x) & PMC_MCR_ID_MSK)
 
 #define MASTER_MAX_ID          4
 
@@ -687,20 +679,22 @@ static void clk_sama7g5_master_set(struct clk_master *master,
 {
        unsigned long flags;
        unsigned int val, cparent;
-       unsigned int enable = status ? PMC_MCR_EN : 0;
+       unsigned int enable = status ? AT91_PMC_MCR_V2_EN : 0;
 
        spin_lock_irqsave(master->lock, flags);
 
-       regmap_write(master->regmap, PMC_MCR, PMC_MCR_ID(master->id));
-       regmap_read(master->regmap, PMC_MCR, &val);
-       regmap_update_bits(master->regmap, PMC_MCR,
-                          enable | PMC_MCR_CSS | PMC_MCR_DIV |
-                          PMC_MCR_CMD | PMC_MCR_ID_MSK,
+       regmap_write(master->regmap, AT91_PMC_MCR_V2,
+                    AT91_PMC_MCR_V2_ID(master->id));
+       regmap_read(master->regmap, AT91_PMC_MCR_V2, &val);
+       regmap_update_bits(master->regmap, AT91_PMC_MCR_V2,
+                          enable | AT91_PMC_MCR_V2_CSS | AT91_PMC_MCR_V2_DIV |
+                          AT91_PMC_MCR_V2_CMD | AT91_PMC_MCR_V2_ID_MSK,
                           enable | (master->parent << PMC_MCR_CSS_SHIFT) |
                           (master->div << MASTER_DIV_SHIFT) |
-                          PMC_MCR_CMD | PMC_MCR_ID(master->id));
+                          AT91_PMC_MCR_V2_CMD |
+                          AT91_PMC_MCR_V2_ID(master->id));
 
-       cparent = (val & PMC_MCR_CSS) >> PMC_MCR_CSS_SHIFT;
+       cparent = (val & AT91_PMC_MCR_V2_CSS) >> PMC_MCR_CSS_SHIFT;
 
        /* Wait here only if parent is being changed. */
        while ((cparent != master->parent) && !clk_master_ready(master))
@@ -725,10 +719,12 @@ static void clk_sama7g5_master_disable(struct clk_hw *hw)
 
        spin_lock_irqsave(master->lock, flags);
 
-       regmap_write(master->regmap, PMC_MCR, master->id);
-       regmap_update_bits(master->regmap, PMC_MCR,
-                          PMC_MCR_EN | PMC_MCR_CMD | PMC_MCR_ID_MSK,
-                          PMC_MCR_CMD | PMC_MCR_ID(master->id));
+       regmap_write(master->regmap, AT91_PMC_MCR_V2, master->id);
+       regmap_update_bits(master->regmap, AT91_PMC_MCR_V2,
+                          AT91_PMC_MCR_V2_EN | AT91_PMC_MCR_V2_CMD |
+                          AT91_PMC_MCR_V2_ID_MSK,
+                          AT91_PMC_MCR_V2_CMD |
+                          AT91_PMC_MCR_V2_ID(master->id));
 
        spin_unlock_irqrestore(master->lock, flags);
 }
@@ -741,12 +737,12 @@ static int clk_sama7g5_master_is_enabled(struct clk_hw *hw)
 
        spin_lock_irqsave(master->lock, flags);
 
-       regmap_write(master->regmap, PMC_MCR, master->id);
-       regmap_read(master->regmap, PMC_MCR, &val);
+       regmap_write(master->regmap, AT91_PMC_MCR_V2, master->id);
+       regmap_read(master->regmap, AT91_PMC_MCR_V2, &val);
 
        spin_unlock_irqrestore(master->lock, flags);
 
-       return !!(val & PMC_MCR_EN);
+       return !!(val & AT91_PMC_MCR_V2_EN);
 }
 
 static int clk_sama7g5_master_set_rate(struct clk_hw *hw, unsigned long rate,
@@ -842,10 +838,10 @@ at91_clk_sama7g5_register_master(struct regmap *regmap,
        master->mux_table = mux_table;
 
        spin_lock_irqsave(master->lock, flags);
-       regmap_write(master->regmap, PMC_MCR, master->id);
-       regmap_read(master->regmap, PMC_MCR, &val);
-       master->parent = (val & PMC_MCR_CSS) >> PMC_MCR_CSS_SHIFT;
-       master->div = (val & PMC_MCR_DIV) >> MASTER_DIV_SHIFT;
+       regmap_write(master->regmap, AT91_PMC_MCR_V2, master->id);
+       regmap_read(master->regmap, AT91_PMC_MCR_V2, &val);
+       master->parent = (val & AT91_PMC_MCR_V2_CSS) >> PMC_MCR_CSS_SHIFT;
+       master->div = (val & AT91_PMC_MCR_V2_DIV) >> MASTER_DIV_SHIFT;
        spin_unlock_irqrestore(master->lock, flags);
 
        hw = &master->hw;