From 8af8b61bf6b5689af9f29f0e04e57c832dad0406 Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Fri, 7 Feb 2020 16:01:33 +0100 Subject: [PATCH] clk: bcm: rpi: Create a data structure for the clocks So far the driver has really only been providing a single clock, and stored both the data associated to that clock in particular with the data associated to the "controller". Since we will change that in the future, let's decouple the clock data from the provider data. Cc: Michael Turquette Cc: linux-clk@vger.kernel.org Acked-by: Nicolas Saenz Julienne Reviewed-by: Stephen Boyd Signed-off-by: Maxime Ripard --- drivers/clk/bcm/clk-raspberrypi.c | 40 ++++++++++++++++++++----------- 1 file changed, 26 insertions(+), 14 deletions(-) --- a/drivers/clk/bcm/clk-raspberrypi.c +++ b/drivers/clk/bcm/clk-raspberrypi.c @@ -35,11 +35,15 @@ struct raspberrypi_clk { struct device *dev; struct rpi_firmware *firmware; struct platform_device *cpufreq; +}; + +struct raspberrypi_clk_data { + struct clk_hw hw; unsigned long min_rate; unsigned long max_rate; - struct clk_hw pllb; + struct raspberrypi_clk *rpi; }; /* @@ -83,8 +87,9 @@ static int raspberrypi_clock_property(st static int raspberrypi_fw_pll_is_on(struct clk_hw *hw) { - struct raspberrypi_clk *rpi = container_of(hw, struct raspberrypi_clk, - pllb); + struct raspberrypi_clk_data *data = + container_of(hw, struct raspberrypi_clk_data, hw); + struct raspberrypi_clk *rpi = data->rpi; u32 val = 0; int ret; @@ -101,8 +106,9 @@ static int raspberrypi_fw_pll_is_on(stru static unsigned long raspberrypi_fw_pll_get_rate(struct clk_hw *hw, unsigned long parent_rate) { - struct raspberrypi_clk *rpi = container_of(hw, struct raspberrypi_clk, - pllb); + struct raspberrypi_clk_data *data = + container_of(hw, struct raspberrypi_clk_data, hw); + struct raspberrypi_clk *rpi = data->rpi; u32 val = 0; int ret; @@ -119,8 +125,9 @@ static unsigned long raspberrypi_fw_pll_ static int raspberrypi_fw_pll_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { - struct raspberrypi_clk *rpi = container_of(hw, struct raspberrypi_clk, - pllb); + struct raspberrypi_clk_data *data = + container_of(hw, struct raspberrypi_clk_data, hw); + struct raspberrypi_clk *rpi = data->rpi; u32 new_rate = rate / RPI_FIRMWARE_PLLB_ARM_DIV_RATE; int ret; @@ -142,13 +149,13 @@ static int raspberrypi_fw_pll_set_rate(s static int raspberrypi_pll_determine_rate(struct clk_hw *hw, struct clk_rate_request *req) { - struct raspberrypi_clk *rpi = container_of(hw, struct raspberrypi_clk, - pllb); + struct raspberrypi_clk_data *data = + container_of(hw, struct raspberrypi_clk_data, hw); u64 div, final_rate; u32 ndiv, fdiv; /* We can't use req->rate directly as it would overflow */ - final_rate = clamp(req->rate, rpi->min_rate, rpi->max_rate); + final_rate = clamp(req->rate, data->min_rate, data->max_rate); div = (u64)final_rate << A2W_PLL_FRAC_BITS; do_div(div, req->best_parent_rate); @@ -173,10 +180,15 @@ static const struct clk_ops raspberrypi_ static int raspberrypi_register_pllb(struct raspberrypi_clk *rpi) { + struct raspberrypi_clk_data *data; struct clk_init_data init = {}; u32 min_rate = 0, max_rate = 0; int ret; + data = devm_kzalloc(rpi->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + data->rpi = rpi; /* All of the PLLs derive from the external oscillator. */ init.parent_names = (const char *[]){ "osc" }; @@ -215,12 +227,12 @@ static int raspberrypi_register_pllb(str dev_info(rpi->dev, "CPU frequency range: min %u, max %u\n", min_rate, max_rate); - rpi->min_rate = min_rate * RPI_FIRMWARE_PLLB_ARM_DIV_RATE; - rpi->max_rate = max_rate * RPI_FIRMWARE_PLLB_ARM_DIV_RATE; + data->min_rate = min_rate * RPI_FIRMWARE_PLLB_ARM_DIV_RATE; + data->max_rate = max_rate * RPI_FIRMWARE_PLLB_ARM_DIV_RATE; - rpi->pllb.init = &init; + data->hw.init = &init; - return devm_clk_hw_register(rpi->dev, &rpi->pllb); + return devm_clk_hw_register(rpi->dev, &data->hw); } static struct clk_fixed_factor raspberrypi_clk_pllb_arm = {