diff options
author | Xing Zheng <zhengxing@rock-chips.com> | 2016-03-09 10:37:04 +0800 |
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committer | Heiko Stuebner <heiko@sntech.de> | 2016-03-27 13:03:34 +0200 |
commit | ef1d9feeccc094f59b72bb11fe14ec886eb574d3 (patch) | |
tree | aa1b6e1c3588d53459f206e92e4ad2fb4629f28c /drivers/clk/rockchip/clk-rk3188.c | |
parent | 268aebaa2410152bf91ea1ede6b284ff8138822d (diff) | |
download | op-kernel-dev-ef1d9feeccc094f59b72bb11fe14ec886eb574d3.zip op-kernel-dev-ef1d9feeccc094f59b72bb11fe14ec886eb574d3.tar.gz |
clk: rockchip: Add support for multiple clock providers
There are need to support Multi-CRUs probability in future, but
it is not supported on the current Rockchip Clock Framework.
Therefore, this patch add support a provider as the parameter
handler when we call the clock register functions for per CRU.
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'drivers/clk/rockchip/clk-rk3188.c')
-rw-r--r-- | drivers/clk/rockchip/clk-rk3188.c | 44 |
1 files changed, 31 insertions, 13 deletions
diff --git a/drivers/clk/rockchip/clk-rk3188.c b/drivers/clk/rockchip/clk-rk3188.c index e832403..0fcce22 100644 --- a/drivers/clk/rockchip/clk-rk3188.c +++ b/drivers/clk/rockchip/clk-rk3188.c @@ -759,57 +759,74 @@ static const char *const rk3188_critical_clocks[] __initconst = { "hclk_cpubus" }; -static void __init rk3188_common_clk_init(struct device_node *np) +static struct rockchip_clk_provider *__init rk3188_common_clk_init(struct device_node *np) { + struct rockchip_clk_provider *ctx; void __iomem *reg_base; reg_base = of_iomap(np, 0); if (!reg_base) { pr_err("%s: could not map cru region\n", __func__); - return; + return ERR_PTR(-ENOMEM); } - rockchip_clk_init(np, reg_base, CLK_NR_CLKS); + ctx = rockchip_clk_init(np, reg_base, CLK_NR_CLKS); + if (IS_ERR(ctx)) { + pr_err("%s: rockchip clk init failed\n", __func__); + return ERR_PTR(-ENOMEM); + } - rockchip_clk_register_branches(common_clk_branches, + rockchip_clk_register_branches(ctx, common_clk_branches, ARRAY_SIZE(common_clk_branches)); rockchip_register_softrst(np, 9, reg_base + RK2928_SOFTRST_CON(0), ROCKCHIP_SOFTRST_HIWORD_MASK); - rockchip_register_restart_notifier(RK2928_GLB_SRST_FST, NULL); + rockchip_register_restart_notifier(ctx, RK2928_GLB_SRST_FST, NULL); + + return ctx; } static void __init rk3066a_clk_init(struct device_node *np) { - rk3188_common_clk_init(np); - rockchip_clk_register_plls(rk3066_pll_clks, + struct rockchip_clk_provider *ctx; + + ctx = rk3188_common_clk_init(np); + if (IS_ERR(ctx)) + return; + + rockchip_clk_register_plls(ctx, rk3066_pll_clks, ARRAY_SIZE(rk3066_pll_clks), RK3066_GRF_SOC_STATUS); - rockchip_clk_register_branches(rk3066a_clk_branches, + rockchip_clk_register_branches(ctx, rk3066a_clk_branches, ARRAY_SIZE(rk3066a_clk_branches)); - rockchip_clk_register_armclk(ARMCLK, "armclk", + rockchip_clk_register_armclk(ctx, ARMCLK, "armclk", mux_armclk_p, ARRAY_SIZE(mux_armclk_p), &rk3066_cpuclk_data, rk3066_cpuclk_rates, ARRAY_SIZE(rk3066_cpuclk_rates)); rockchip_clk_protect_critical(rk3188_critical_clocks, ARRAY_SIZE(rk3188_critical_clocks)); + rockchip_clk_of_add_provider(np, ctx); } CLK_OF_DECLARE(rk3066a_cru, "rockchip,rk3066a-cru", rk3066a_clk_init); static void __init rk3188a_clk_init(struct device_node *np) { + struct rockchip_clk_provider *ctx; struct clk *clk1, *clk2; unsigned long rate; int ret; - rk3188_common_clk_init(np); - rockchip_clk_register_plls(rk3188_pll_clks, + ctx = rk3188_common_clk_init(np); + if (IS_ERR(ctx)) + return; + + rockchip_clk_register_plls(ctx, rk3188_pll_clks, ARRAY_SIZE(rk3188_pll_clks), RK3188_GRF_SOC_STATUS); - rockchip_clk_register_branches(rk3188_clk_branches, + rockchip_clk_register_branches(ctx, rk3188_clk_branches, ARRAY_SIZE(rk3188_clk_branches)); - rockchip_clk_register_armclk(ARMCLK, "armclk", + rockchip_clk_register_armclk(ctx, ARMCLK, "armclk", mux_armclk_p, ARRAY_SIZE(mux_armclk_p), &rk3188_cpuclk_data, rk3188_cpuclk_rates, ARRAY_SIZE(rk3188_cpuclk_rates)); @@ -833,6 +850,7 @@ static void __init rk3188a_clk_init(struct device_node *np) rockchip_clk_protect_critical(rk3188_critical_clocks, ARRAY_SIZE(rk3188_critical_clocks)); + rockchip_clk_of_add_provider(np, ctx); } CLK_OF_DECLARE(rk3188a_cru, "rockchip,rk3188a-cru", rk3188a_clk_init); |