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Commit 8360493c authored by Ben Dooks's avatar Ben Dooks
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ARM: S3C64XX: Compress s3c6400-clock.c code 

The individually named clocks are all static to the code
and thus can be compressed into a single array and then
the array can be referenced. This removes the need for
a seperate array of pointers to clocks.

Fix a minor problem of re-initialising the pointers in
s3c6400_set_clksrc() as this is also called by the cpufreq
code. Move these initialisations to the code that does the
registration.

Based on Harald Welte's original clock changes patch.
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
parent f9c4f1e4
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Inline Side-by-side
Showing with 154 additions and 180 deletions
arch/arm/plat-s3c64xx/s3c6400-clock.c
View file @ 8360493c
......@@ -255,7 +255,6 @@ static struct clk_sources clkset_uhost = {
.nr_sources = ARRAY_SIZE(clkset_uhost_list),
};
/* The peripheral clocks are all controlled via clocksource followed
* by an optional divider and gate stage. We currently roll this into
* one clock which hides the intermediate clock from the mux.
......@@ -354,7 +353,60 @@ static unsigned long s3c64xx_roundrate_clksrc(struct clk *clk,
return rate;
}
static struct clksrc_clk clk_mmc0 = {
/* clocks that feed other parts of the clock source tree */
static struct clk clk_iis_cd0 = {
.name = "iis_cdclk0",
.id = -1,
};
static struct clk clk_iis_cd1 = {
.name = "iis_cdclk1",
.id = -1,
};
static struct clk clk_pcm_cd = {
.name = "pcm_cdclk",
.id = -1,
};
static struct clk *clkset_audio0_list[] = {
[0] = &clk_mout_epll.clk,
[1] = &clk_dout_mpll,
[2] = &clk_fin_epll,
[3] = &clk_iis_cd0,
[4] = &clk_pcm_cd,
};
static struct clk_sources clkset_audio0 = {
.sources = clkset_audio0_list,
.nr_sources = ARRAY_SIZE(clkset_audio0_list),
};
static struct clk *clkset_audio1_list[] = {
[0] = &clk_mout_epll.clk,
[1] = &clk_dout_mpll,
[2] = &clk_fin_epll,
[3] = &clk_iis_cd1,
[4] = &clk_pcm_cd,
};
static struct clk_sources clkset_audio1 = {
.sources = clkset_audio1_list,
.nr_sources = ARRAY_SIZE(clkset_audio1_list),
};
static struct clk *clkset_camif_list[] = {
&clk_h2,
};
static struct clk_sources clkset_camif = {
.sources = clkset_camif_list,
.nr_sources = ARRAY_SIZE(clkset_camif_list),
};
static struct clksrc_clk clksrcs[] = {
{
.clk = {
.name = "mmc_bus",
.id = 0,
......@@ -366,9 +418,7 @@ static struct clksrc_clk clk_mmc0 = {
.sources = &clkset_spi_mmc,
.divider_shift = S3C6400_CLKDIV1_MMC0_SHIFT,
.reg_divider = S3C_CLK_DIV1,
};
static struct clksrc_clk clk_mmc1 = {
}, {
.clk = {
.name = "mmc_bus",
.id = 1,
......@@ -380,9 +430,7 @@ static struct clksrc_clk clk_mmc1 = {
.sources = &clkset_spi_mmc,
.divider_shift = S3C6400_CLKDIV1_MMC1_SHIFT,
.reg_divider = S3C_CLK_DIV1,
};
static struct clksrc_clk clk_mmc2 = {
}, {
.clk = {
.name = "mmc_bus",
.id = 2,
......@@ -394,9 +442,7 @@ static struct clksrc_clk clk_mmc2 = {
.sources = &clkset_spi_mmc,
.divider_shift = S3C6400_CLKDIV1_MMC2_SHIFT,
.reg_divider = S3C_CLK_DIV1,
};
static struct clksrc_clk clk_usbhost = {
}, {
.clk = {
.name = "usb-bus-host",
.id = -1,
......@@ -408,9 +454,7 @@ static struct clksrc_clk clk_usbhost = {
.sources = &clkset_uhost,
.divider_shift = S3C6400_CLKDIV1_UHOST_SHIFT,
.reg_divider = S3C_CLK_DIV1,
};
static struct clksrc_clk clk_uart_uclk1 = {
}, {
.clk = {
.name = "uclk1",
.id = -1,
......@@ -422,11 +466,8 @@ static struct clksrc_clk clk_uart_uclk1 = {
.sources = &clkset_uart,
.divider_shift = S3C6400_CLKDIV2_UART_SHIFT,
.reg_divider = S3C_CLK_DIV2,
};
}, {
/* Where does UCLK0 come from? */
static struct clksrc_clk clk_spi0 = {
.clk = {
.name = "spi-bus",
.id = 0,
......@@ -438,9 +479,7 @@ static struct clksrc_clk clk_spi0 = {
.sources = &clkset_spi_mmc,
.divider_shift = S3C6400_CLKDIV2_SPI0_SHIFT,
.reg_divider = S3C_CLK_DIV2,
};
static struct clksrc_clk clk_spi1 = {
}, {
.clk = {
.name = "spi-bus",
.id = 1,
......@@ -452,37 +491,7 @@ static struct clksrc_clk clk_spi1 = {
.sources = &clkset_spi_mmc,
.divider_shift = S3C6400_CLKDIV2_SPI1_SHIFT,
.reg_divider = S3C_CLK_DIV2,
};
static struct clk clk_iis_cd0 = {
.name = "iis_cdclk0",
.id = -1,
};
static struct clk clk_iis_cd1 = {
.name = "iis_cdclk1",
.id = -1,
};
static struct clk clk_pcm_cd = {
.name = "pcm_cdclk",
.id = -1,
};
static struct clk *clkset_audio0_list[] = {
[0] = &clk_mout_epll.clk,
[1] = &clk_dout_mpll,
[2] = &clk_fin_epll,
[3] = &clk_iis_cd0,
[4] = &clk_pcm_cd,
};
static struct clk_sources clkset_audio0 = {
.sources = clkset_audio0_list,
.nr_sources = ARRAY_SIZE(clkset_audio0_list),
};
static struct clksrc_clk clk_audio0 = {
}, {
.clk = {
.name = "audio-bus",
.id = 0,
......@@ -494,22 +503,7 @@ static struct clksrc_clk clk_audio0 = {
.sources = &clkset_audio0,
.divider_shift = S3C6400_CLKDIV2_AUDIO0_SHIFT,
.reg_divider = S3C_CLK_DIV2,
};
static struct clk *clkset_audio1_list[] = {
[0] = &clk_mout_epll.clk,
[1] = &clk_dout_mpll,
[2] = &clk_fin_epll,
[3] = &clk_iis_cd1,
[4] = &clk_pcm_cd,
};
static struct clk_sources clkset_audio1 = {
.sources = clkset_audio1_list,
.nr_sources = ARRAY_SIZE(clkset_audio1_list),
};
static struct clksrc_clk clk_audio1 = {
}, {
.clk = {
.name = "audio-bus",
.id = 1,
......@@ -521,9 +515,7 @@ static struct clksrc_clk clk_audio1 = {
.sources = &clkset_audio1,
.divider_shift = S3C6400_CLKDIV2_AUDIO1_SHIFT,
.reg_divider = S3C_CLK_DIV2,
};
static struct clksrc_clk clk_irda = {
}, {
.clk = {
.name = "irda-bus",
.id = 0,
......@@ -535,18 +527,7 @@ static struct clksrc_clk clk_irda = {
.sources = &clkset_irda,
.divider_shift = S3C6400_CLKDIV2_IRDA_SHIFT,
.reg_divider = S3C_CLK_DIV2,
};
static struct clk *clkset_camif_list[] = {
&clk_h2,
};
static struct clk_sources clkset_camif = {
.sources = clkset_camif_list,
.nr_sources = ARRAY_SIZE(clkset_camif_list),
};
static struct clksrc_clk clk_camif = {
}, {
.clk = {
.name = "camera",
.id = -1,
......@@ -558,6 +539,7 @@ static struct clksrc_clk clk_camif = {
.sources = &clkset_camif,
.divider_shift = S3C6400_CLKDIV0_CAM_SHIFT,
.reg_divider = S3C_CLK_DIV0,
},
};
/* Clock initialisation code */
......@@ -566,17 +548,6 @@ static struct clksrc_clk *init_parents[] = {
&clk_mout_apll,
&clk_mout_epll,
&clk_mout_mpll,
&clk_mmc0,
&clk_mmc1,
&clk_mmc2,
&clk_usbhost,
&clk_uart_uclk1,
&clk_spi0,
&clk_spi1,
&clk_audio0,
&clk_audio1,
&clk_irda,
&clk_camif,
};
static void __init_or_cpufreq s3c6400_set_clksrc(struct clksrc_clk *clk)
......@@ -593,11 +564,6 @@ static void __init_or_cpufreq s3c6400_set_clksrc(struct clksrc_clk *clk)
return;
}
clk->clk.get_rate = s3c64xx_getrate_clksrc;
clk->clk.set_rate = s3c64xx_setrate_clksrc;
clk->clk.set_parent = s3c64xx_setparent_clksrc;
clk->clk.round_rate = s3c64xx_roundrate_clksrc;
clk->clk.parent = srcs->sources[clksrc];
printk(KERN_INFO "%s: source is %s (%d), rate is %ld\n",
......@@ -664,6 +630,9 @@ void __init_or_cpufreq s3c6400_setup_clocks(void)
for (ptr = 0; ptr < ARRAY_SIZE(init_parents); ptr++)
s3c6400_set_clksrc(init_parents[ptr]);
for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++)
s3c6400_set_clksrc(&clksrcs[ptr]);
}
static struct clk *clks[] __initdata = {
......@@ -674,17 +643,6 @@ static struct clk *clks[] __initdata = {
&clk_mout_epll.clk,
&clk_mout_mpll.clk,
&clk_dout_mpll,
&clk_mmc0.clk,
&clk_mmc1.clk,
&clk_mmc2.clk,
&clk_usbhost.clk,
&clk_uart_uclk1.clk,
&clk_spi0.clk,
&clk_spi1.clk,
&clk_audio0.clk,
&clk_audio1.clk,
&clk_irda.clk,
&clk_camif.clk,
&clk_arm,
};
......@@ -716,4 +674,20 @@ void __init s3c6400_register_clocks(unsigned armclk_divlimit)
clkp->name, ret);
}
}
for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++) {
clkp = &clksrcs[ptr].clk;
/* all clksrc clocks have these */
clkp->get_rate = s3c64xx_getrate_clksrc;
clkp->set_rate = s3c64xx_setrate_clksrc;
clkp->set_parent = s3c64xx_setparent_clksrc;
clkp->round_rate = s3c64xx_roundrate_clksrc;
ret = s3c24xx_register_clock(clkp);
if (ret < 0) {
printk(KERN_ERR "Failed to register clock %s (%d)\n",
clkp->name, ret);
}
}
}
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