clk: efm32gg: Migrate to clk_hw based OF and registration APIs

Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in
these drivers, allowing us to move closer to a clear split of
consumer and provider clk APIs.

Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

diff --git a/drivers/clk/clk-efm32gg.c b/drivers/clk/clk-efm32gg.c
index 22e4c65..8802a2d 100644 (file)
--- a/drivers/clk/clk-efm32gg.c
+++ b/drivers/clk/clk-efm32gg.c
@@ -10,24 +10,31 @@
 #include <linux/clk-provider.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <linux/slab.h>
 
 #include <dt-bindings/clock/efm32-cmu.h>
 
 #define CMU_HFPERCLKEN0                0x44
+#define CMU_MAX_CLKS           37
 
-static struct clk *clk[37];
-static struct clk_onecell_data clk_data = {
-       .clks = clk,
-       .clk_num = ARRAY_SIZE(clk),
-};
+static struct clk_hw_onecell_data *clk_data;
 
 static void __init efm32gg_cmu_init(struct device_node *np)
 {
        int i;
        void __iomem *base;
+       struct clk_hw **hws;
 
-       for (i = 0; i < ARRAY_SIZE(clk); ++i)
-               clk[i] = ERR_PTR(-ENOENT);
+       clk_data = kzalloc(sizeof(*clk_data) +
+                          sizeof(*clk_data->hws) * CMU_MAX_CLKS, GFP_KERNEL);
+
+       if (!clk_data)
+               return;
+
+       hws = clk_data->hws;
+
+       for (i = 0; i < CMU_MAX_CLKS; ++i)
+               hws[i] = ERR_PTR(-ENOENT);
 
        base = of_iomap(np, 0);
        if (!base) {
@@ -35,46 +42,46 @@ static void __init efm32gg_cmu_init(struct device_node *np)
                return;
        }
 
-       clk[clk_HFXO] = clk_register_fixed_rate(NULL, "HFXO", NULL,
-                       0, 48000000);
+       hws[clk_HFXO] = clk_hw_register_fixed_rate(NULL, "HFXO", NULL, 0,
+                                                  48000000);
 
-       clk[clk_HFPERCLKUSART0] = clk_register_gate(NULL, "HFPERCLK.USART0",
+       hws[clk_HFPERCLKUSART0] = clk_hw_register_gate(NULL, "HFPERCLK.USART0",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 0, 0, NULL);
-       clk[clk_HFPERCLKUSART1] = clk_register_gate(NULL, "HFPERCLK.USART1",
+       hws[clk_HFPERCLKUSART1] = clk_hw_register_gate(NULL, "HFPERCLK.USART1",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 1, 0, NULL);
-       clk[clk_HFPERCLKUSART2] = clk_register_gate(NULL, "HFPERCLK.USART2",
+       hws[clk_HFPERCLKUSART2] = clk_hw_register_gate(NULL, "HFPERCLK.USART2",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 2, 0, NULL);
-       clk[clk_HFPERCLKUART0] = clk_register_gate(NULL, "HFPERCLK.UART0",
+       hws[clk_HFPERCLKUART0] = clk_hw_register_gate(NULL, "HFPERCLK.UART0",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 3, 0, NULL);
-       clk[clk_HFPERCLKUART1] = clk_register_gate(NULL, "HFPERCLK.UART1",
+       hws[clk_HFPERCLKUART1] = clk_hw_register_gate(NULL, "HFPERCLK.UART1",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 4, 0, NULL);
-       clk[clk_HFPERCLKTIMER0] = clk_register_gate(NULL, "HFPERCLK.TIMER0",
+       hws[clk_HFPERCLKTIMER0] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER0",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 5, 0, NULL);
-       clk[clk_HFPERCLKTIMER1] = clk_register_gate(NULL, "HFPERCLK.TIMER1",
+       hws[clk_HFPERCLKTIMER1] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER1",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 6, 0, NULL);
-       clk[clk_HFPERCLKTIMER2] = clk_register_gate(NULL, "HFPERCLK.TIMER2",
+       hws[clk_HFPERCLKTIMER2] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER2",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 7, 0, NULL);
-       clk[clk_HFPERCLKTIMER3] = clk_register_gate(NULL, "HFPERCLK.TIMER3",
+       hws[clk_HFPERCLKTIMER3] = clk_hw_register_gate(NULL, "HFPERCLK.TIMER3",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 8, 0, NULL);
-       clk[clk_HFPERCLKACMP0] = clk_register_gate(NULL, "HFPERCLK.ACMP0",
+       hws[clk_HFPERCLKACMP0] = clk_hw_register_gate(NULL, "HFPERCLK.ACMP0",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 9, 0, NULL);
-       clk[clk_HFPERCLKACMP1] = clk_register_gate(NULL, "HFPERCLK.ACMP1",
+       hws[clk_HFPERCLKACMP1] = clk_hw_register_gate(NULL, "HFPERCLK.ACMP1",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 10, 0, NULL);
-       clk[clk_HFPERCLKI2C0] = clk_register_gate(NULL, "HFPERCLK.I2C0",
+       hws[clk_HFPERCLKI2C0] = clk_hw_register_gate(NULL, "HFPERCLK.I2C0",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 11, 0, NULL);
-       clk[clk_HFPERCLKI2C1] = clk_register_gate(NULL, "HFPERCLK.I2C1",
+       hws[clk_HFPERCLKI2C1] = clk_hw_register_gate(NULL, "HFPERCLK.I2C1",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 12, 0, NULL);
-       clk[clk_HFPERCLKGPIO] = clk_register_gate(NULL, "HFPERCLK.GPIO",
+       hws[clk_HFPERCLKGPIO] = clk_hw_register_gate(NULL, "HFPERCLK.GPIO",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 13, 0, NULL);
-       clk[clk_HFPERCLKVCMP] = clk_register_gate(NULL, "HFPERCLK.VCMP",
+       hws[clk_HFPERCLKVCMP] = clk_hw_register_gate(NULL, "HFPERCLK.VCMP",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 14, 0, NULL);
-       clk[clk_HFPERCLKPRS] = clk_register_gate(NULL, "HFPERCLK.PRS",
+       hws[clk_HFPERCLKPRS] = clk_hw_register_gate(NULL, "HFPERCLK.PRS",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 15, 0, NULL);
-       clk[clk_HFPERCLKADC0] = clk_register_gate(NULL, "HFPERCLK.ADC0",
+       hws[clk_HFPERCLKADC0] = clk_hw_register_gate(NULL, "HFPERCLK.ADC0",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 16, 0, NULL);
-       clk[clk_HFPERCLKDAC0] = clk_register_gate(NULL, "HFPERCLK.DAC0",
+       hws[clk_HFPERCLKDAC0] = clk_hw_register_gate(NULL, "HFPERCLK.DAC0",
                        "HFXO", 0, base + CMU_HFPERCLKEN0, 17, 0, NULL);
 
-       of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+       of_clk_add_hw_provider(np, of_clk_hw_onecell_get, &clk_data);
 }
 CLK_OF_DECLARE(efm32ggcmu, "efm32gg,cmu", efm32gg_cmu_init);