mirror of https://gitee.com/openkylin/linux.git
Merge branch 'common/clkfwk' into sh-fixes-for-linus
This commit is contained in:
commit
849653372d
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@ -79,10 +79,6 @@
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</sect2>
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</sect1>
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</chapter>
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<chapter id="clk">
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<title>Clock Framework Extensions</title>
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!Iinclude/linux/sh_clk.h
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</chapter>
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<chapter id="mach">
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<title>Machine Specific Interfaces</title>
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<sect1 id="dreamcast">
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@ -1,32 +0,0 @@
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Clock framework on SuperH architecture
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The framework on SH extends existing API by the function clk_set_rate_ex,
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which prototype is as follows:
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clk_set_rate_ex (struct clk *clk, unsigned long rate, int algo_id)
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The algo_id parameter is used to specify algorithm used to recalculate clocks,
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adjanced to clock, specified as first argument. It is assumed that algo_id==0
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means no changes to adjanced clock
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Internally, the clk_set_rate_ex forwards request to clk->ops->set_rate method,
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if it is present in ops structure. The method should set the clock rate and adjust
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all needed clocks according to the passed algo_id.
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Exact values for algo_id are machine-dependent. For the sh7722, the following
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values are defined:
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NO_CHANGE = 0,
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IUS_N1_N1, /* I:U = N:1, U:Sh = N:1 */
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IUS_322, /* I:U:Sh = 3:2:2 */
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IUS_522, /* I:U:Sh = 5:2:2 */
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IUS_N11, /* I:U:Sh = N:1:1 */
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SB_N1, /* Sh:B = N:1 */
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SB3_N1, /* Sh:B3 = N:1 */
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SB3_32, /* Sh:B3 = 3:2 */
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SB3_43, /* Sh:B3 = 4:3 */
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SB3_54, /* Sh:B3 = 5:4 */
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BP_N1, /* B:P = N:1 */
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IP_N1 /* I:P = N:1 */
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Each of these constants means relation between clocks that can be set via the FRQCR
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register
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@ -220,8 +220,7 @@ static void pllc2_disable(struct clk *clk)
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__raw_writel(__raw_readl(PLLC2CR) & ~0x80000000, PLLC2CR);
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}
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static int pllc2_set_rate(struct clk *clk,
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unsigned long rate, int algo_id)
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static int pllc2_set_rate(struct clk *clk, unsigned long rate)
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{
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unsigned long value;
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int idx;
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@ -463,8 +462,7 @@ static int fsidiv_enable(struct clk *clk)
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return 0;
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}
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static int fsidiv_set_rate(struct clk *clk,
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unsigned long rate, int algo_id)
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static int fsidiv_set_rate(struct clk *clk, unsigned long rate)
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{
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int idx;
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@ -110,7 +110,7 @@ static int shoc_clk_verify_rate(struct clk *clk, unsigned long rate)
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return 0;
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}
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static int shoc_clk_set_rate(struct clk *clk, unsigned long rate, int algo_id)
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static int shoc_clk_set_rate(struct clk *clk, unsigned long rate)
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{
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unsigned long frqcr3;
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unsigned int tmp;
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@ -454,12 +454,6 @@ unsigned long clk_get_rate(struct clk *clk)
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EXPORT_SYMBOL_GPL(clk_get_rate);
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int clk_set_rate(struct clk *clk, unsigned long rate)
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{
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return clk_set_rate_ex(clk, rate, 0);
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}
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EXPORT_SYMBOL_GPL(clk_set_rate);
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int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id)
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{
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int ret = -EOPNOTSUPP;
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unsigned long flags;
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spin_lock_irqsave(&clock_lock, flags);
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if (likely(clk->ops && clk->ops->set_rate)) {
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ret = clk->ops->set_rate(clk, rate, algo_id);
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ret = clk->ops->set_rate(clk, rate);
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if (ret != 0)
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goto out_unlock;
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} else {
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return ret;
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}
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EXPORT_SYMBOL_GPL(clk_set_rate_ex);
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EXPORT_SYMBOL_GPL(clk_set_rate);
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int clk_set_parent(struct clk *clk, struct clk *parent)
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{
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clkp->ops->set_parent(clkp,
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clkp->parent);
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if (likely(clkp->ops->set_rate))
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clkp->ops->set_rate(clkp,
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rate, NO_CHANGE);
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clkp->ops->set_rate(clkp, rate);
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else if (likely(clkp->ops->recalc))
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clkp->rate = clkp->ops->recalc(clkp);
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}
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@ -110,8 +110,7 @@ static int sh_clk_div6_set_parent(struct clk *clk, struct clk *parent)
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return 0;
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}
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static int sh_clk_div6_set_rate(struct clk *clk,
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unsigned long rate, int algo_id)
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static int sh_clk_div6_set_rate(struct clk *clk, unsigned long rate)
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{
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unsigned long value;
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int idx;
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return 0;
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}
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static int sh_clk_div4_set_rate(struct clk *clk, unsigned long rate, int algo_id)
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static int sh_clk_div4_set_rate(struct clk *clk, unsigned long rate)
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{
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struct clk_div4_table *d4t = clk->priv;
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unsigned long value;
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@ -19,11 +19,13 @@ struct clk_mapping {
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};
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struct clk_ops {
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#ifdef CONFIG_SH_CLK_CPG_LEGACY
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void (*init)(struct clk *clk);
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#endif
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int (*enable)(struct clk *clk);
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void (*disable)(struct clk *clk);
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unsigned long (*recalc)(struct clk *clk);
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int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id);
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int (*set_rate)(struct clk *clk, unsigned long rate);
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int (*set_parent)(struct clk *clk, struct clk *parent);
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long (*round_rate)(struct clk *clk, unsigned long rate);
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};
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void clk_unregister(struct clk *);
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void clk_enable_init_clocks(void);
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/**
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* clk_set_rate_ex - set the clock rate for a clock source, with additional parameter
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* @clk: clock source
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* @rate: desired clock rate in Hz
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* @algo_id: algorithm id to be passed down to ops->set_rate
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*
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* Returns success (0) or negative errno.
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*/
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int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);
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enum clk_sh_algo_id {
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NO_CHANGE = 0,
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IUS_N1_N1,
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IUS_322,
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IUS_522,
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IUS_N11,
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SB_N1,
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SB3_N1,
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SB3_32,
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SB3_43,
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SB3_54,
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BP_N1,
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IP_N1,
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};
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struct clk_div_mult_table {
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unsigned int *divisors;
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unsigned int nr_divisors;
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