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authorGeert Uytterhoeven <geert+renesas@glider.be>2018-03-15 05:44:09 -0400
committerGeert Uytterhoeven <geert+renesas@glider.be>2018-03-21 12:34:54 -0400
commit6c669e504a62641fd7189df13ef57d182373e36f (patch)
treeeadc8d200fc97dced3fb3e6ef25ab84232b2aada
parentf32b0696eabd7a9dc6efd6a97448742d5f2a7db0 (diff)
clk: renesas: rcar-gen2: Always use readl()/writel()
On arm32, there is no reason to use the (soon deprecated) clk_readl()/clk_writel(). Hence use the generic readl()/writel() instead. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
-rw-r--r--drivers/clk/renesas/clk-rcar-gen2.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/drivers/clk/renesas/clk-rcar-gen2.c b/drivers/clk/renesas/clk-rcar-gen2.c
index d14cbe1ca29a..ee32a022e6da 100644
--- a/drivers/clk/renesas/clk-rcar-gen2.c
+++ b/drivers/clk/renesas/clk-rcar-gen2.c
@@ -62,8 +62,7 @@ static unsigned long cpg_z_clk_recalc_rate(struct clk_hw *hw,
62 unsigned int mult; 62 unsigned int mult;
63 unsigned int val; 63 unsigned int val;
64 64
65 val = (clk_readl(zclk->reg) & CPG_FRQCRC_ZFC_MASK) 65 val = (readl(zclk->reg) & CPG_FRQCRC_ZFC_MASK) >> CPG_FRQCRC_ZFC_SHIFT;
66 >> CPG_FRQCRC_ZFC_SHIFT;
67 mult = 32 - val; 66 mult = 32 - val;
68 67
69 return div_u64((u64)parent_rate * mult, 32); 68 return div_u64((u64)parent_rate * mult, 32);
@@ -95,21 +94,21 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
95 mult = div_u64((u64)rate * 32, parent_rate); 94 mult = div_u64((u64)rate * 32, parent_rate);
96 mult = clamp(mult, 1U, 32U); 95 mult = clamp(mult, 1U, 32U);
97 96
98 if (clk_readl(zclk->kick_reg) & CPG_FRQCRB_KICK) 97 if (readl(zclk->kick_reg) & CPG_FRQCRB_KICK)
99 return -EBUSY; 98 return -EBUSY;
100 99
101 val = clk_readl(zclk->reg); 100 val = readl(zclk->reg);
102 val &= ~CPG_FRQCRC_ZFC_MASK; 101 val &= ~CPG_FRQCRC_ZFC_MASK;
103 val |= (32 - mult) << CPG_FRQCRC_ZFC_SHIFT; 102 val |= (32 - mult) << CPG_FRQCRC_ZFC_SHIFT;
104 clk_writel(val, zclk->reg); 103 writel(val, zclk->reg);
105 104
106 /* 105 /*
107 * Set KICK bit in FRQCRB to update hardware setting and wait for 106 * Set KICK bit in FRQCRB to update hardware setting and wait for
108 * clock change completion. 107 * clock change completion.
109 */ 108 */
110 kick = clk_readl(zclk->kick_reg); 109 kick = readl(zclk->kick_reg);
111 kick |= CPG_FRQCRB_KICK; 110 kick |= CPG_FRQCRB_KICK;
112 clk_writel(kick, zclk->kick_reg); 111 writel(kick, zclk->kick_reg);
113 112
114 /* 113 /*
115 * Note: There is no HW information about the worst case latency. 114 * Note: There is no HW information about the worst case latency.
@@ -121,7 +120,7 @@ static int cpg_z_clk_set_rate(struct clk_hw *hw, unsigned long rate,
121 * "super" safe value. 120 * "super" safe value.
122 */ 121 */
123 for (i = 1000; i; i--) { 122 for (i = 1000; i; i--) {
124 if (!(clk_readl(zclk->kick_reg) & CPG_FRQCRB_KICK)) 123 if (!(readl(zclk->kick_reg) & CPG_FRQCRB_KICK))
125 return 0; 124 return 0;
126 125
127 cpu_relax(); 126 cpu_relax();
@@ -332,7 +331,7 @@ rcar_gen2_cpg_register_clock(struct device_node *np, struct rcar_gen2_cpg *cpg,
332 mult = config->pll0_mult; 331 mult = config->pll0_mult;
333 div = 3; 332 div = 3;
334 } else { 333 } else {
335 u32 value = clk_readl(cpg->reg + CPG_PLL0CR); 334 u32 value = readl(cpg->reg + CPG_PLL0CR);
336 mult = ((value >> 24) & ((1 << 7) - 1)) + 1; 335 mult = ((value >> 24) & ((1 << 7) - 1)) + 1;
337 } 336 }
338 parent_name = "main"; 337 parent_name = "main";