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clk: microchip: mpfs: convert MSSPLL outputs to clk_divider 

After splitting the MSSPLL in two, the PLL outputs have become
open-coded versions of clk_divider. Drop the custom clk ops structs, and
instead use the generic clk_divider_ops.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
This commit is contained in:
Conor Dooley 2024-01-22 12:19:54 +00:00
parent b67dae3909
commit 7215119383
1 changed files with 14 additions and 67 deletions
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81
drivers/clk/microchip/clk-mpfs.c
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@ -61,13 +61,10 @@ struct mpfs_msspll_hw_clock {
struct mpfs_msspll_out_hw_clock {
void __iomem *base;
struct clk_hw hw;
struct clk_divider output;
struct clk_init_data init;
unsigned int id;
u32 reg_offset;
u32 shift;
u32 width;
u32 flags;
};
#define to_mpfs_msspll_out_clk(_hw) container_of(_hw, struct mpfs_msspll_out_hw_clock, hw)
@ -177,75 +174,25 @@ static int mpfs_clk_register_mssplls(struct device *dev, struct mpfs_msspll_hw_c
* MSS PLL output clocks
*/
static unsigned long mpfs_clk_msspll_out_recalc_rate(struct clk_hw *hw, unsigned long prate)
{
struct mpfs_msspll_out_hw_clock *msspll_out_hw = to_mpfs_msspll_out_clk(hw);
void __iomem *postdiv_addr = msspll_out_hw->base + msspll_out_hw->reg_offset;
u32 postdiv;
postdiv = readl_relaxed(postdiv_addr) >> msspll_out_hw->shift;
postdiv &= clk_div_mask(msspll_out_hw->width);
return prate / postdiv;
}
static long mpfs_clk_msspll_out_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
struct mpfs_msspll_out_hw_clock *msspll_out_hw = to_mpfs_msspll_out_clk(hw);
return divider_round_rate(hw, rate, prate, NULL, msspll_out_hw->width,
msspll_out_hw->flags);
}
static int mpfs_clk_msspll_out_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long prate)
{
struct mpfs_msspll_out_hw_clock *msspll_out_hw = to_mpfs_msspll_out_clk(hw);
void __iomem *postdiv_addr = msspll_out_hw->base + msspll_out_hw->reg_offset;
u32 postdiv;
int divider_setting;
unsigned long flags;
divider_setting = divider_get_val(rate, prate, NULL, msspll_out_hw->width,
msspll_out_hw->flags);
if (divider_setting < 0)
return divider_setting;
spin_lock_irqsave(&mpfs_clk_lock, flags);
postdiv = readl_relaxed(postdiv_addr);
postdiv &= ~(clk_div_mask(msspll_out_hw->width) << msspll_out_hw->shift);
writel_relaxed(postdiv, postdiv_addr);
spin_unlock_irqrestore(&mpfs_clk_lock, flags);
return 0;
}
static const struct clk_ops mpfs_clk_msspll_out_ops = {
.recalc_rate = mpfs_clk_msspll_out_recalc_rate,
.round_rate = mpfs_clk_msspll_out_round_rate,
.set_rate = mpfs_clk_msspll_out_set_rate,
};
#define CLK_PLL_OUT(_id, _name, _parent, _flags, _shift, _width, _offset) { \
.id = _id, \
.shift = _shift, \
.width = _width, \
.output.shift = _shift, \
.output.width = _width, \
.output.table = NULL, \
.reg_offset = _offset, \
.flags = _flags, \
.hw.init = CLK_HW_INIT(_name, _parent, &mpfs_clk_msspll_out_ops, 0), \
.output.flags = _flags, \
.output.hw.init = CLK_HW_INIT(_name, _parent, &clk_divider_ops, 0), \
.output.lock = &mpfs_clk_lock, \
}
static struct mpfs_msspll_out_hw_clock mpfs_msspll_out_clks[] = {
CLK_PLL_OUT(CLK_MSSPLL0, "clk_msspll", "clk_msspll_internal", 0,
CLK_PLL_OUT(CLK_MSSPLL0, "clk_msspll", "clk_msspll_internal", CLK_DIVIDER_ONE_BASED,
MSSPLL_POSTDIV02_SHIFT, MSSPLL_POSTDIV_WIDTH, REG_MSSPLL_POSTDIV01_CR),
CLK_PLL_OUT(CLK_MSSPLL1, "clk_msspll1", "clk_msspll_internal", 0,
CLK_PLL_OUT(CLK_MSSPLL1, "clk_msspll1", "clk_msspll_internal", CLK_DIVIDER_ONE_BASED,
MSSPLL_POSTDIV13_SHIFT, MSSPLL_POSTDIV_WIDTH, REG_MSSPLL_POSTDIV01_CR),
CLK_PLL_OUT(CLK_MSSPLL2, "clk_msspll2", "clk_msspll_internal", 0,
CLK_PLL_OUT(CLK_MSSPLL2, "clk_msspll2", "clk_msspll_internal", CLK_DIVIDER_ONE_BASED,
MSSPLL_POSTDIV02_SHIFT, MSSPLL_POSTDIV_WIDTH, REG_MSSPLL_POSTDIV23_CR),
CLK_PLL_OUT(CLK_MSSPLL3, "clk_msspll3", "clk_msspll_internal", 0,
CLK_PLL_OUT(CLK_MSSPLL3, "clk_msspll3", "clk_msspll_internal", CLK_DIVIDER_ONE_BASED,
MSSPLL_POSTDIV13_SHIFT, MSSPLL_POSTDIV_WIDTH, REG_MSSPLL_POSTDIV23_CR),
};
@ -259,13 +206,13 @@ static int mpfs_clk_register_msspll_outs(struct device *dev,
for (i = 0; i < num_clks; i++) {
struct mpfs_msspll_out_hw_clock *msspll_out_hw = &msspll_out_hws[i];
msspll_out_hw->base = data->msspll_base;
ret = devm_clk_hw_register(dev, &msspll_out_hw->hw);
msspll_out_hw->output.reg = data->msspll_base + msspll_out_hw->reg_offset;
ret = devm_clk_hw_register(dev, &msspll_out_hw->output.hw);
if (ret)
return dev_err_probe(dev, ret, "failed to register msspll out id: %d\n",
msspll_out_hw->id);
data->hw_data.hws[msspll_out_hw->id] = &msspll_out_hw->hw;
data->hw_data.hws[msspll_out_hw->id] = &msspll_out_hw->output.hw;
}
return 0;