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author | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2011-03-24 14:25:51 +0000 |
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committer | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2011-03-24 21:17:52 +0000 |
commit | b692a63af8b63a7a7e84702a713d0072e336b326 (patch) | |
tree | ca4edaf57a416a33c8129f682880b10850e32d32 /drivers/video | |
parent | 2c536f84c19c73ab1e3411bf1596ff85c4a23783 (diff) | |
download | op-kernel-dev-b692a63af8b63a7a7e84702a713d0072e336b326.zip op-kernel-dev-b692a63af8b63a7a7e84702a713d0072e336b326.tar.gz |
viafb: add VIA slapping capability
This patch introduces dummy functions to execute when we don't know
what we should do (due to missing documentation). They do nothing
but print a nice message in the log explaining the situation.
To trigger this message initial power management support is
activated which might save a bit energy by disabling PLL and clock
if no device is configured to use them.
Note: The message is only shown for the oldest IGPs CLE266 and K400
as for the other platforms there are reasonable assumptions
how it does (hopefully) work.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Diffstat (limited to 'drivers/video')
-rw-r--r-- | drivers/video/via/hw.c | 19 | ||||
-rw-r--r-- | drivers/video/via/via_clock.c | 30 |
2 files changed, 43 insertions, 6 deletions
diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c index f1eff0b..df84251 100644 --- a/drivers/video/via/hw.c +++ b/drivers/video/via/hw.c @@ -2289,6 +2289,25 @@ int viafb_setmode(struct VideoModeTable *vmode_tbl, int video_bpp, get_sync(viafbinfo1)); } + clock.set_primary_clock_source(VIA_CLKSRC_X1, true); + clock.set_secondary_clock_source(VIA_CLKSRC_X1, true); + + if (viaparinfo->shared->iga1_devices) { + clock.set_primary_pll_state(VIA_STATE_ON); + clock.set_primary_clock_state(VIA_STATE_ON); + } else { + clock.set_primary_pll_state(VIA_STATE_OFF); + clock.set_primary_clock_state(VIA_STATE_OFF); + } + + if (viaparinfo->shared->iga2_devices) { + clock.set_secondary_pll_state(VIA_STATE_ON); + clock.set_secondary_clock_state(VIA_STATE_ON); + } else { + clock.set_secondary_pll_state(VIA_STATE_OFF); + clock.set_secondary_clock_state(VIA_STATE_OFF); + } + via_set_state(devices, VIA_STATE_ON); device_screen_on(); return 1; diff --git a/drivers/video/via/via_clock.c b/drivers/video/via/via_clock.c index 29afe4c..a829a24 100644 --- a/drivers/video/via/via_clock.c +++ b/drivers/video/via/via_clock.c @@ -29,6 +29,9 @@ #include "global.h" #include "debug.h" +const char *via_slap = "Please slap VIA Technologies to motivate them " + "releasing full documentation for your platform!\n"; + static inline u32 cle266_encode_pll(struct via_pll_config pll) { return (pll.multiplier << 8) @@ -229,19 +232,34 @@ static void set_secondary_clock_source(enum via_clksrc source, bool use_pll) via_write_reg_mask(VIACR, 0x6C, data, 0x0F); } +static void dummy_set_clock_state(u8 state) +{ + printk(KERN_INFO "Using undocumented set clock state.\n%s", via_slap); +} + +static void dummy_set_clock_source(enum via_clksrc source, bool use_pll) +{ + printk(KERN_INFO "Using undocumented set clock source.\n%s", via_slap); +} + +static void dummy_set_pll_state(u8 state) +{ + printk(KERN_INFO "Using undocumented set PLL state.\n%s", via_slap); +} + void via_clock_init(struct via_clock *clock, int gfx_chip) { switch (gfx_chip) { case UNICHROME_CLE266: case UNICHROME_K400: - clock->set_primary_clock_state = NULL; - clock->set_primary_clock_source = NULL; - clock->set_primary_pll_state = NULL; + clock->set_primary_clock_state = dummy_set_clock_state; + clock->set_primary_clock_source = dummy_set_clock_source; + clock->set_primary_pll_state = dummy_set_pll_state; clock->set_primary_pll = cle266_set_primary_pll; - clock->set_secondary_clock_state = NULL; - clock->set_secondary_clock_source = NULL; - clock->set_secondary_pll_state = NULL; + clock->set_secondary_clock_state = dummy_set_clock_state; + clock->set_secondary_clock_source = dummy_set_clock_source; + clock->set_secondary_pll_state = dummy_set_pll_state; clock->set_secondary_pll = cle266_set_secondary_pll; break; case UNICHROME_K800: |