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SubjectRe: [PATCH] clk: impd1: add pclk clocks
Date
Quoting Linus Walleij (2014-04-15 01:29:45)
> 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.
>
> Cc: Mike Turquette <mturquette@linaro.org>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Taken into clk-next.

Thanks,
Mike

> ---
> drivers/clk/versatile/clk-impd1.c | 36 +++++++++++++++++++++++++++++-------
> 1 file changed, 29 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/clk/versatile/clk-impd1.c b/drivers/clk/versatile/clk-impd1.c
> index 31b44f025f9e..8d7d4d5a514c 100644
> --- 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]);
> @@ -149,9 +169,11 @@ 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);
> }
> --
> 1.9.0
>


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