From 1bc6f6dda0a3158af0703110656273958793f076 Mon Sep 17 00:00:00 2001 From: Adam Ford Date: Sat, 17 Jun 2023 10:02:59 -0500 Subject: clk: renesas: rcar-gen3: Add support for ZG clock A clock used for the 3D graphics appears to be common among multiple SoC's, so add a generic gen3 clock for clocking the graphics. This is similar to the cpg_z_clk, with a different frequency control register and different flags. Instead of duplicating the code, make cpg_z_clk_register into a helper function and call the help function with the FCR and flags as a parameter. Signed-off-by: Adam Ford Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/20230617150302.38477-1-aford173@gmail.com Signed-off-by: Geert Uytterhoeven --- drivers/clk/renesas/rcar-gen3-cpg.c | 35 +++++++++++++++++++++++++++++++---- drivers/clk/renesas/rcar-gen3-cpg.h | 1 + 2 files changed, 32 insertions(+), 4 deletions(-) diff --git a/drivers/clk/renesas/rcar-gen3-cpg.c b/drivers/clk/renesas/rcar-gen3-cpg.c index b3ef62fa612e..d0129a650941 100644 --- a/drivers/clk/renesas/rcar-gen3-cpg.c +++ b/drivers/clk/renesas/rcar-gen3-cpg.c @@ -264,11 +264,13 @@ static const struct clk_ops cpg_z_clk_ops = { .set_rate = cpg_z_clk_set_rate, }; -static struct clk * __init cpg_z_clk_register(const char *name, +static struct clk * __init __cpg_z_clk_register(const char *name, const char *parent_name, void __iomem *reg, unsigned int div, - unsigned int offset) + unsigned int offset, + unsigned int fcr, + unsigned int flags) { struct clk_init_data init = {}; struct cpg_z_clk *zclk; @@ -280,11 +282,11 @@ static struct clk * __init cpg_z_clk_register(const char *name, init.name = name; init.ops = &cpg_z_clk_ops; - init.flags = CLK_SET_RATE_PARENT; + init.flags = flags; init.parent_names = &parent_name; init.num_parents = 1; - zclk->reg = reg + CPG_FRQCRC; + zclk->reg = reg + fcr; zclk->kick_reg = reg + CPG_FRQCRB; zclk->hw.init = &init; zclk->mask = GENMASK(offset + 4, offset); @@ -301,6 +303,27 @@ static struct clk * __init cpg_z_clk_register(const char *name, return clk; } +static struct clk * __init cpg_z_clk_register(const char *name, + const char *parent_name, + void __iomem *reg, + unsigned int div, + unsigned int offset) +{ + return __cpg_z_clk_register(name, parent_name, reg, div, offset, + CPG_FRQCRC, CLK_SET_RATE_PARENT); +} + +static struct clk * __init cpg_zg_clk_register(const char *name, + const char *parent_name, + void __iomem *reg, + unsigned int div, + unsigned int offset) +{ + return __cpg_z_clk_register(name, parent_name, reg, div, offset, + CPG_FRQCRB, 0); + +} + static const struct clk_div_table cpg_rpcsrc_div_table[] = { { 2, 5 }, { 3, 6 }, { 0, 0 }, }; @@ -438,6 +461,10 @@ struct clk * __init rcar_gen3_cpg_clk_register(struct device *dev, return cpg_z_clk_register(core->name, __clk_get_name(parent), base, core->div, core->offset); + case CLK_TYPE_GEN3_ZG: + return cpg_zg_clk_register(core->name, __clk_get_name(parent), + base, core->div, core->offset); + case CLK_TYPE_GEN3_OSC: /* * Clock combining OSC EXTAL predivider and a fixed divider diff --git a/drivers/clk/renesas/rcar-gen3-cpg.h b/drivers/clk/renesas/rcar-gen3-cpg.h index 9028bf4295ce..bfdc649bdf12 100644 --- a/drivers/clk/renesas/rcar-gen3-cpg.h +++ b/drivers/clk/renesas/rcar-gen3-cpg.h @@ -22,6 +22,7 @@ enum rcar_gen3_clk_types { CLK_TYPE_GEN3_R, CLK_TYPE_GEN3_MDSEL, /* Select parent/divider using mode pin */ CLK_TYPE_GEN3_Z, + CLK_TYPE_GEN3_ZG, CLK_TYPE_GEN3_OSC, /* OSC EXTAL predivider and fixed divider */ CLK_TYPE_GEN3_RCKSEL, /* Select parent/divider using RCKCR.CKSEL */ CLK_TYPE_GEN3_RPCSRC, -- cgit v1.2.3