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ARM: tegra: clock: Move unshared clk struct members into union 

Creates a union of a struct for each type of clock to reduce memory
usage and clarify which members are used by all clocks and which are
used by a single type.

Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Colin Cross <ccross@android.com>
This commit is contained in:
Colin Cross 2011-02-12 16:05:31 -08:00
Родитель 3ec349fbf1
Коммит f151961173
2 изменённых файлов: 172 добавлений и 139 удалений
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85
arch/arm/mach-tegra/clock.h
Просмотреть файл

@ -47,7 +47,7 @@ struct clk_mux_sel {
u32 value;
};
struct clk_pll_table {
struct clk_pll_freq_table {
unsigned long input_rate;
unsigned long output_rate;
u16 n;
@ -74,51 +74,54 @@ enum clk_state {
struct clk {
/* node for master clocks list */
struct list_head node;
struct list_head children; /* list of children */
struct list_head sibling; /* node for children */
struct list_head node; /* node for list of all clocks */
struct list_head children; /* list of children */
struct list_head sibling; /* node for children */
struct clk_lookup lookup;
#ifdef CONFIG_DEBUG_FS
struct dentry *dent;
struct dentry *parent_dent;
struct dentry *dent;
bool set;
#endif
struct clk_ops *ops;
struct clk *parent;
struct clk_lookup lookup;
unsigned long rate;
unsigned long max_rate;
u32 flags;
u32 refcnt;
const char *name;
struct clk_ops *ops;
unsigned long rate;
unsigned long max_rate;
u32 flags;
const char *name;
u32 refcnt;
enum clk_state state;
struct clk *parent;
u32 div;
u32 mul;
const struct clk_mux_sel *inputs;
u32 reg;
u32 reg_shift;
unsigned int clk_num;
enum clk_state state;
#ifdef CONFIG_DEBUG_FS
bool set;
#endif
/* PLL */
unsigned long input_min;
unsigned long input_max;
unsigned long cf_min;
unsigned long cf_max;
unsigned long vco_min;
unsigned long vco_max;
const struct clk_pll_table *pll_table;
int pll_lock_delay;
/* DIV */
u32 div;
u32 mul;
/* MUX */
const struct clk_mux_sel *inputs;
u32 sel;
u32 reg_mask;
/* Virtual cpu clock */
struct clk *main;
struct clk *backup;
union {
struct {
unsigned int clk_num;
} periph;
struct {
unsigned long input_min;
unsigned long input_max;
unsigned long cf_min;
unsigned long cf_max;
unsigned long vco_min;
unsigned long vco_max;
const struct clk_pll_freq_table *freq_table;
int lock_delay;
} pll;
struct {
u32 sel;
u32 reg_mask;
} mux;
struct {
struct clk *main;
struct clk *backup;
} cpu;
} u;
};

226
arch/arm/mach-tegra/tegra2_clocks.c
Просмотреть файл

@ -109,9 +109,9 @@
#define PLLE_MISC_READY (1 << 15)
#define PERIPH_CLK_TO_ENB_REG(c) ((c->clk_num / 32) * 4)
#define PERIPH_CLK_TO_ENB_SET_REG(c) ((c->clk_num / 32) * 8)
#define PERIPH_CLK_TO_ENB_BIT(c) (1 << (c->clk_num % 32))
#define PERIPH_CLK_TO_ENB_REG(c) ((c->u.periph.clk_num / 32) * 4)
#define PERIPH_CLK_TO_ENB_SET_REG(c) ((c->u.periph.clk_num / 32) * 8)
#define PERIPH_CLK_TO_ENB_BIT(c) (1 << (c->u.periph.clk_num % 32))
#define SUPER_CLK_MUX 0x00
#define SUPER_STATE_SHIFT 28
@ -378,24 +378,24 @@ static void tegra2_cpu_clk_disable(struct clk *c)
static int tegra2_cpu_clk_set_rate(struct clk *c, unsigned long rate)
{
int ret;
ret = clk_set_parent_locked(c->parent, c->backup);
ret = clk_set_parent_locked(c->parent, c->u.cpu.backup);
if (ret) {
pr_err("Failed to switch cpu to clock %s\n", c->backup->name);
pr_err("Failed to switch cpu to clock %s\n", c->u.cpu.backup->name);
return ret;
}
if (rate == c->backup->rate)
if (rate == c->u.cpu.backup->rate)
goto out;
ret = clk_set_rate_locked(c->main, rate);
ret = clk_set_rate_locked(c->u.cpu.main, rate);
if (ret) {
pr_err("Failed to change cpu pll to %lu\n", rate);
return ret;
}
ret = clk_set_parent_locked(c->parent, c->main);
ret = clk_set_parent_locked(c->parent, c->u.cpu.main);
if (ret) {
pr_err("Failed to switch cpu to clock %s\n", c->main->name);
pr_err("Failed to switch cpu to clock %s\n", c->u.cpu.main->name);
return ret;
}
@ -543,7 +543,7 @@ static struct clk_ops tegra_blink_clk_ops = {
/* PLL Functions */
static int tegra2_pll_clk_wait_for_lock(struct clk *c)
{
udelay(c->pll_lock_delay);
udelay(c->u.pll.lock_delay);
return 0;
}
@ -600,12 +600,12 @@ static int tegra2_pll_clk_set_rate(struct clk *c, unsigned long rate)
{
u32 val;
unsigned long input_rate;
const struct clk_pll_table *sel;
const struct clk_pll_freq_table *sel;
pr_debug("%s: %s %lu\n", __func__, c->name, rate);
input_rate = c->parent->rate;
for (sel = c->pll_table; sel->input_rate != 0; sel++) {
for (sel = c->u.pll.freq_table; sel->input_rate != 0; sel++) {
if (sel->input_rate == input_rate && sel->output_rate == rate) {
c->mul = sel->n;
c->div = sel->m * sel->p;
@ -1138,7 +1138,7 @@ static struct clk tegra_clk_32k = {
.max_rate = 32768,
};
static struct clk_pll_table tegra_pll_s_table[] = {
static struct clk_pll_freq_table tegra_pll_s_freq_table[] = {
{32768, 12000000, 366, 1, 1, 0},
{32768, 13000000, 397, 1, 1, 0},
{32768, 19200000, 586, 1, 1, 0},
@ -1150,17 +1150,19 @@ static struct clk tegra_pll_s = {
.name = "pll_s",
.flags = PLL_ALT_MISC_REG,
.ops = &tegra_pll_ops,
.reg = 0xf0,
.input_min = 32768,
.input_max = 32768,
.parent = &tegra_clk_32k,
.cf_min = 0, /* FIXME */
.cf_max = 0, /* FIXME */
.vco_min = 12000000,
.vco_max = 26000000,
.pll_table = tegra_pll_s_table,
.max_rate = 26000000,
.pll_lock_delay = 300,
.reg = 0xf0,
.u.pll = {
.input_min = 32768,
.input_max = 32768,
.cf_min = 0, /* FIXME */
.cf_max = 0, /* FIXME */
.vco_min = 12000000,
.vco_max = 26000000,
.freq_table = tegra_pll_s_freq_table,
.lock_delay = 300,
},
};
static struct clk_mux_sel tegra_clk_m_sel[] = {
@ -1168,18 +1170,18 @@ static struct clk_mux_sel tegra_clk_m_sel[] = {
{ .input = &tegra_pll_s, .value = 1},
{ 0, 0},
};
static struct clk tegra_clk_m = {
.name = "clk_m",
.flags = ENABLE_ON_INIT,
.ops = &tegra_clk_m_ops,
.inputs = tegra_clk_m_sel,
.reg = 0x1fc,
.reg_mask = (1<<28),
.reg_shift = 28,
.max_rate = 26000000,
};
static struct clk_pll_table tegra_pll_c_table[] = {
static struct clk_pll_freq_table tegra_pll_c_freq_table[] = {
{ 0, 0, 0, 0, 0, 0 },
};
@ -1188,16 +1190,18 @@ static struct clk tegra_pll_c = {
.flags = PLL_HAS_CPCON,
.ops = &tegra_pll_ops,
.reg = 0x80,
.input_min = 2000000,
.input_max = 31000000,
.parent = &tegra_clk_m,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1400000000,
.pll_table = tegra_pll_c_table,
.max_rate = 600000000,
.pll_lock_delay = 300,
.u.pll = {
.input_min = 2000000,
.input_max = 31000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1400000000,
.freq_table = tegra_pll_c_freq_table,
.lock_delay = 300,
},
};
static struct clk tegra_pll_c_out1 = {
@ -1210,7 +1214,7 @@ static struct clk tegra_pll_c_out1 = {
.max_rate = 600000000,
};
static struct clk_pll_table tegra_pll_m_table[] = {
static struct clk_pll_freq_table tegra_pll_m_freq_table[] = {
{ 12000000, 666000000, 666, 12, 1, 8},
{ 13000000, 666000000, 666, 13, 1, 8},
{ 19200000, 666000000, 555, 16, 1, 8},
@ -1227,16 +1231,18 @@ static struct clk tegra_pll_m = {
.flags = PLL_HAS_CPCON,
.ops = &tegra_pll_ops,
.reg = 0x90,
.input_min = 2000000,
.input_max = 31000000,
.parent = &tegra_clk_m,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1200000000,
.pll_table = tegra_pll_m_table,
.max_rate = 800000000,
.pll_lock_delay = 300,
.u.pll = {
.input_min = 2000000,
.input_max = 31000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1200000000,
.freq_table = tegra_pll_m_freq_table,
.lock_delay = 300,
},
};
static struct clk tegra_pll_m_out1 = {
@ -1249,7 +1255,7 @@ static struct clk tegra_pll_m_out1 = {
.max_rate = 600000000,
};
static struct clk_pll_table tegra_pll_p_table[] = {
static struct clk_pll_freq_table tegra_pll_p_freq_table[] = {
{ 12000000, 216000000, 432, 12, 2, 8},
{ 13000000, 216000000, 432, 13, 2, 8},
{ 19200000, 216000000, 90, 4, 2, 1},
@ -1266,16 +1272,18 @@ static struct clk tegra_pll_p = {
.flags = ENABLE_ON_INIT | PLL_FIXED | PLL_HAS_CPCON,
.ops = &tegra_pll_ops,
.reg = 0xa0,
.input_min = 2000000,
.input_max = 31000000,
.parent = &tegra_clk_m,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1400000000,
.pll_table = tegra_pll_p_table,
.max_rate = 432000000,
.pll_lock_delay = 300,
.u.pll = {
.input_min = 2000000,
.input_max = 31000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1400000000,
.freq_table = tegra_pll_p_freq_table,
.lock_delay = 300,
},
};
static struct clk tegra_pll_p_out1 = {
@ -1318,7 +1326,7 @@ static struct clk tegra_pll_p_out4 = {
.max_rate = 432000000,
};
static struct clk_pll_table tegra_pll_a_table[] = {
static struct clk_pll_freq_table tegra_pll_a_freq_table[] = {
{ 28800000, 56448000, 49, 25, 1, 1},
{ 28800000, 73728000, 64, 25, 1, 1},
{ 28800000, 11289600, 49, 25, 1, 1},
@ -1332,16 +1340,18 @@ static struct clk tegra_pll_a = {
.flags = PLL_HAS_CPCON,
.ops = &tegra_pll_ops,
.reg = 0xb0,
.input_min = 2000000,
.input_max = 31000000,
.parent = &tegra_pll_p_out1,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1400000000,
.pll_table = tegra_pll_a_table,
.max_rate = 56448000,
.pll_lock_delay = 300,
.u.pll = {
.input_min = 2000000,
.input_max = 31000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1400000000,
.freq_table = tegra_pll_a_freq_table,
.lock_delay = 300,
},
};
static struct clk tegra_pll_a_out0 = {
@ -1354,7 +1364,7 @@ static struct clk tegra_pll_a_out0 = {
.max_rate = 56448000,
};
static struct clk_pll_table tegra_pll_d_table[] = {
static struct clk_pll_freq_table tegra_pll_d_freq_table[] = {
{ 12000000, 216000000, 216, 12, 1, 4},
{ 13000000, 216000000, 216, 13, 1, 4},
{ 19200000, 216000000, 135, 12, 1, 3},
@ -1378,16 +1388,18 @@ static struct clk tegra_pll_d = {
.flags = PLL_HAS_CPCON | PLLD,
.ops = &tegra_pll_ops,
.reg = 0xd0,
.input_min = 2000000,
.input_max = 40000000,
.parent = &tegra_clk_m,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 40000000,
.vco_max = 1000000000,
.pll_table = tegra_pll_d_table,
.max_rate = 1000000000,
.pll_lock_delay = 1000,
.u.pll = {
.input_min = 2000000,
.input_max = 40000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 40000000,
.vco_max = 1000000000,
.freq_table = tegra_pll_d_freq_table,
.lock_delay = 1000,
},
};
static struct clk tegra_pll_d_out0 = {
@ -1398,7 +1410,7 @@ static struct clk tegra_pll_d_out0 = {
.max_rate = 500000000,
};
static struct clk_pll_table tegra_pll_u_table[] = {
static struct clk_pll_freq_table tegra_pll_u_freq_table[] = {
{ 12000000, 480000000, 960, 12, 2, 0},
{ 13000000, 480000000, 960, 13, 2, 0},
{ 19200000, 480000000, 200, 4, 2, 0},
@ -1411,19 +1423,21 @@ static struct clk tegra_pll_u = {
.flags = PLLU,
.ops = &tegra_pll_ops,
.reg = 0xc0,
.input_min = 2000000,
.input_max = 40000000,
.parent = &tegra_clk_m,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 480000000,
.vco_max = 960000000,
.pll_table = tegra_pll_u_table,
.max_rate = 480000000,
.pll_lock_delay = 1000,
.u.pll = {
.input_min = 2000000,
.input_max = 40000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 480000000,
.vco_max = 960000000,
.freq_table = tegra_pll_u_freq_table,
.lock_delay = 1000,
},
};
static struct clk_pll_table tegra_pll_x_table[] = {
static struct clk_pll_freq_table tegra_pll_x_freq_table[] = {
/* 1 GHz */
{ 12000000, 1000000000, 1000, 12, 1, 12},
{ 13000000, 1000000000, 1000, 13, 1, 12},
@ -1474,19 +1488,21 @@ static struct clk tegra_pll_x = {
.flags = PLL_HAS_CPCON | PLL_ALT_MISC_REG,
.ops = &tegra_pllx_ops,
.reg = 0xe0,
.input_min = 2000000,
.input_max = 31000000,
.parent = &tegra_clk_m,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1200000000,
.pll_table = tegra_pll_x_table,
.max_rate = 1000000000,
.pll_lock_delay = 300,
.u.pll = {
.input_min = 2000000,
.input_max = 31000000,
.cf_min = 1000000,
.cf_max = 6000000,
.vco_min = 20000000,
.vco_max = 1200000000,
.freq_table = tegra_pll_x_freq_table,
.lock_delay = 300,
},
};
static struct clk_pll_table tegra_pll_e_table[] = {
static struct clk_pll_freq_table tegra_pll_e_freq_table[] = {
{ 12000000, 100000000, 200, 24, 1, 0 },
{ 0, 0, 0, 0, 0, 0 },
};
@ -1495,41 +1511,49 @@ static struct clk tegra_pll_e = {
.name = "pll_e",
.flags = PLL_ALT_MISC_REG,
.ops = &tegra_plle_ops,
.input_min = 12000000,
.input_max = 12000000,
.max_rate = 100000000,
.parent = &tegra_clk_m,
.reg = 0xe8,
.pll_table = tegra_pll_e_table,
.max_rate = 100000000,
.u.pll = {
.input_min = 12000000,
.input_max = 12000000,
.freq_table = tegra_pll_e_freq_table,
},
};
static struct clk tegra_clk_d = {
.name = "clk_d",
.flags = PERIPH_NO_RESET,
.ops = &tegra_clk_double_ops,
.clk_num = 90,
.reg = 0x34,
.reg_shift = 12,
.parent = &tegra_clk_m,
.max_rate = 52000000,
.u.periph = {
.clk_num = 90,
},
};
/* dap_mclk1, belongs to the cdev1 pingroup. */
static struct clk tegra_dev1_clk = {
.name = "clk_dev1",
.ops = &tegra_cdev_clk_ops,
.clk_num = 94,
.rate = 26000000,
.max_rate = 26000000,
.u.periph = {
.clk_num = 94,
},
};
/* dap_mclk2, belongs to the cdev2 pingroup. */
static struct clk tegra_dev2_clk = {
.name = "clk_dev2",
.ops = &tegra_cdev_clk_ops,
.clk_num = 93,
.rate = 26000000,
.max_rate = 26000000,
.u.periph = {
.clk_num = 93,
},
};
/* initialized before peripheral clocks */
@ -1564,10 +1588,12 @@ static struct clk tegra_clk_audio_2x = {
.flags = PERIPH_NO_RESET,
.max_rate = 48000000,
.ops = &tegra_clk_double_ops,
.clk_num = 89,
.reg = 0x34,
.reg_shift = 8,
.parent = &tegra_clk_audio,
.u.periph = {
.clk_num = 89,
},
};
struct clk_lookup tegra_audio_clk_lookups[] = {
@ -1645,10 +1671,12 @@ static struct clk tegra_clk_sclk = {
static struct clk tegra_clk_virtual_cpu = {
.name = "cpu",
.parent = &tegra_clk_cclk,
.main = &tegra_pll_x,
.backup = &tegra_pll_p,
.ops = &tegra_cpu_ops,
.max_rate = 1000000000,
.u.cpu = {
.main = &tegra_pll_x,
.backup = &tegra_pll_p,
},
};
static struct clk tegra_clk_hclk = {
@ -1768,11 +1796,13 @@ static struct clk_mux_sel mux_pclk[] = {
.con_id = _con, \
}, \
.ops = &tegra_periph_clk_ops, \
.clk_num = _clk_num, \
.reg = _reg, \
.inputs = _inputs, \
.flags = _flags, \
.max_rate = _max, \
.u.periph = { \
.clk_num = _clk_num, \
}, \
}
struct clk tegra_list_clks[] = {