clk: impd1: add pclk clocks

The IM-PD1 PrimeCells all have pclk assignments though this clock
cannot be controlled, and we need to provide this as a dummy
clock for the PL061 GPIO driver to probe, so let's assign it to
all the cells on the board.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

diff --git a/drivers/clk/versatile/clk-impd1.c b/drivers/clk/versatile/clk-impd1.c
index 264d8d5..1cc1330 100644 (file)
--- a/drivers/clk/versatile/clk-impd1.c
+++ b/drivers/clk/versatile/clk-impd1.c
@@ -20,6 +20,8 @@
 #define IMPD1_LOCK     0x08
 
 struct impd1_clk {
+       char *pclkname;
+       struct clk *pclk;
        char *vco1name;
        struct clk *vco1clk;
        char *vco2name;
@@ -31,7 +33,7 @@ struct impd1_clk {
        struct clk *spiclk;
        char *scname;
        struct clk *scclk;
-       struct clk_lookup *clks[6];
+       struct clk_lookup *clks[15];
 };
 
 /* One entry for each connected IM-PD1 LM */
@@ -86,6 +88,7 @@ void integrator_impd1_clk_init(void __iomem *base, unsigned int id)
 {
        struct impd1_clk *imc;
        struct clk *clk;
+       struct clk *pclk;
        int i;
 
        if (id > 3) {
@@ -94,11 +97,18 @@ void integrator_impd1_clk_init(void __iomem *base, unsigned int id)
        }
        imc = &impd1_clks[id];
 
+       /* Register the fixed rate PCLK */
+       imc->pclkname = kasprintf(GFP_KERNEL, "lm%x-pclk", id);
+       pclk = clk_register_fixed_rate(NULL, imc->pclkname, NULL,
+                                     CLK_IS_ROOT, 0);
+       imc->pclk = pclk;
+
        imc->vco1name = kasprintf(GFP_KERNEL, "lm%x-vco1", id);
        clk = icst_clk_register(NULL, &impd1_icst1_desc, imc->vco1name, NULL,
                                base);
        imc->vco1clk = clk;
-       imc->clks[0] = clkdev_alloc(clk, NULL, "lm%x:01000", id);
+       imc->clks[0] = clkdev_alloc(pclk, "apb_pclk", "lm%x:01000", id);
+       imc->clks[1] = clkdev_alloc(clk, NULL, "lm%x:01000", id);
 
        /* VCO2 is also called "CLK2" */
        imc->vco2name = kasprintf(GFP_KERNEL, "lm%x-vco2", id);
@@ -107,28 +117,38 @@ void integrator_impd1_clk_init(void __iomem *base, unsigned int id)
        imc->vco2clk = clk;
 
        /* MMCI uses CLK2 right off */
-       imc->clks[1] = clkdev_alloc(clk, NULL, "lm%x:00700", id);
+       imc->clks[2] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00700", id);
+       imc->clks[3] = clkdev_alloc(clk, NULL, "lm%x:00700", id);
 
        /* UART reference clock divides CLK2 by a fixed factor 4 */
        imc->uartname = kasprintf(GFP_KERNEL, "lm%x-uartclk", id);
        clk = clk_register_fixed_factor(NULL, imc->uartname, imc->vco2name,
                                   CLK_IGNORE_UNUSED, 1, 4);
        imc->uartclk = clk;
-       imc->clks[2] = clkdev_alloc(clk, NULL, "lm%x:00100", id);
-       imc->clks[3] = clkdev_alloc(clk, NULL, "lm%x:00200", id);
+       imc->clks[4] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00100", id);
+       imc->clks[5] = clkdev_alloc(clk, NULL, "lm%x:00100", id);
+       imc->clks[6] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00200", id);
+       imc->clks[7] = clkdev_alloc(clk, NULL, "lm%x:00200", id);
 
        /* SPI PL022 clock divides CLK2 by a fixed factor 64 */
        imc->spiname = kasprintf(GFP_KERNEL, "lm%x-spiclk", id);
        clk = clk_register_fixed_factor(NULL, imc->spiname, imc->vco2name,
                                   CLK_IGNORE_UNUSED, 1, 64);
-       imc->clks[4] = clkdev_alloc(clk, NULL, "lm%x:00300", id);
+       imc->clks[8] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00300", id);
+       imc->clks[9] = clkdev_alloc(clk, NULL, "lm%x:00300", id);
+
+       /* The GPIO blocks and AACI have only PCLK */
+       imc->clks[10] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00400", id);
+       imc->clks[11] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00500", id);
+       imc->clks[12] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00800", id);
 
        /* Smart Card clock divides CLK2 by a fixed factor 4 */
        imc->scname = kasprintf(GFP_KERNEL, "lm%x-scclk", id);
        clk = clk_register_fixed_factor(NULL, imc->scname, imc->vco2name,
                                   CLK_IGNORE_UNUSED, 1, 4);
        imc->scclk = clk;
-       imc->clks[5] = clkdev_alloc(clk, NULL, "lm%x:00600", id);
+       imc->clks[13] = clkdev_alloc(pclk, "apb_pclk", "lm%x:00600", id);
+       imc->clks[14] = clkdev_alloc(clk, NULL, "lm%x:00600", id);
 
        for (i = 0; i < ARRAY_SIZE(imc->clks); i++)
                clkdev_add(imc->clks[i]);
@@ -150,10 +170,12 @@ void integrator_impd1_clk_exit(unsigned int id)
        clk_unregister(imc->uartclk);
        clk_unregister(imc->vco2clk);
        clk_unregister(imc->vco1clk);
+       clk_unregister(imc->pclk);
        kfree(imc->scname);
        kfree(imc->spiname);
        kfree(imc->uartname);
        kfree(imc->vco2name);
        kfree(imc->vco1name);
+       kfree(imc->pclkname);
 }
 EXPORT_SYMBOL_GPL(integrator_impd1_clk_exit);