diff options
author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2011-04-21 18:53:25 +0200 |
---|---|---|
committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2011-05-12 18:39:50 +0200 |
commit | 5be685faff2b75fa015832c5137bbb5513965104 (patch) | |
tree | 8774f288d57039087d143ab67e355c180640b641 /drivers/video/omap2 | |
parent | OMAP: DSS2: RFBI: add rfbi_bus_lock (diff) | |
download | linux-5be685faff2b75fa015832c5137bbb5513965104.tar.xz linux-5be685faff2b75fa015832c5137bbb5513965104.zip |
OMAP: DSS2: RFBI: clock enable/disable changes
RFBI enables and disables clocks inside almost every function to get a
finegrained control to the clocks. However, the current understanding is
that this is not necessary power-management-wise.
Change the clocking scheme so that RFBI clocks are enabled when the
omapdss_rfbi_display_enable is called, and disabled when
omapdss_rfbi_display_disable is called.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video/omap2')
-rw-r--r-- | drivers/video/omap2/dss/rfbi.c | 28 |
1 files changed, 4 insertions, 24 deletions
diff --git a/drivers/video/omap2/dss/rfbi.c b/drivers/video/omap2/dss/rfbi.c index 46817e7fdaf4..1c19d174facb 100644 --- a/drivers/video/omap2/dss/rfbi.c +++ b/drivers/video/omap2/dss/rfbi.c @@ -163,7 +163,6 @@ EXPORT_SYMBOL(rfbi_bus_unlock); void omap_rfbi_write_command(const void *buf, u32 len) { - rfbi_enable_clocks(1); switch (rfbi.parallelmode) { case OMAP_DSS_RFBI_PARALLELMODE_8: { @@ -187,13 +186,11 @@ void omap_rfbi_write_command(const void *buf, u32 len) default: BUG(); } - rfbi_enable_clocks(0); } EXPORT_SYMBOL(omap_rfbi_write_command); void omap_rfbi_read_data(void *buf, u32 len) { - rfbi_enable_clocks(1); switch (rfbi.parallelmode) { case OMAP_DSS_RFBI_PARALLELMODE_8: { @@ -221,13 +218,11 @@ void omap_rfbi_read_data(void *buf, u32 len) default: BUG(); } - rfbi_enable_clocks(0); } EXPORT_SYMBOL(omap_rfbi_read_data); void omap_rfbi_write_data(const void *buf, u32 len) { - rfbi_enable_clocks(1); switch (rfbi.parallelmode) { case OMAP_DSS_RFBI_PARALLELMODE_8: { @@ -252,7 +247,6 @@ void omap_rfbi_write_data(const void *buf, u32 len) BUG(); } - rfbi_enable_clocks(0); } EXPORT_SYMBOL(omap_rfbi_write_data); @@ -264,8 +258,6 @@ void omap_rfbi_write_pixels(const void __iomem *buf, int scr_width, int horiz_offset = scr_width - w; int i; - rfbi_enable_clocks(1); - if (rfbi.datatype == OMAP_DSS_RFBI_DATATYPE_16 && rfbi.parallelmode == OMAP_DSS_RFBI_PARALLELMODE_8) { const u16 __iomem *pd = buf; @@ -310,8 +302,6 @@ void omap_rfbi_write_pixels(const void __iomem *buf, int scr_width, } else { BUG(); } - - rfbi_enable_clocks(0); } EXPORT_SYMBOL(omap_rfbi_write_pixels); @@ -332,8 +322,6 @@ void rfbi_transfer_area(struct omap_dss_device *dssdev, u16 width, rfbi.framedone_callback = callback; rfbi.framedone_callback_data = data; - rfbi_enable_clocks(1); - rfbi_write_reg(RFBI_PIXEL_CNT, width * height); l = rfbi_read_reg(RFBI_CONTROL); @@ -352,8 +340,6 @@ static void framedone_callback(void *data, u32 mask) REG_FLD_MOD(RFBI_CONTROL, 0, 0, 0); - rfbi_enable_clocks(0); - callback = rfbi.framedone_callback; rfbi.framedone_callback = NULL; @@ -462,7 +448,6 @@ void rfbi_set_timings(int rfbi_module, struct rfbi_timings *t) BUG_ON(!t->converted); - rfbi_enable_clocks(1); rfbi_write_reg(RFBI_ONOFF_TIME(rfbi_module), t->tim[0]); rfbi_write_reg(RFBI_CYCLE_TIME(rfbi_module), t->tim[1]); @@ -471,7 +456,6 @@ void rfbi_set_timings(int rfbi_module, struct rfbi_timings *t) (t->tim[2] ? 1 : 0), 4, 4); rfbi_print_timings(); - rfbi_enable_clocks(0); } static int ps_to_rfbi_ticks(int time, int div) @@ -659,7 +643,6 @@ int omap_rfbi_setup_te(enum omap_rfbi_te_mode mode, DSSDBG("setup_te: mode %d hs %d vs %d hs_inv %d vs_inv %d\n", mode, hs, vs, hs_pol_inv, vs_pol_inv); - rfbi_enable_clocks(1); rfbi_write_reg(RFBI_HSYNC_WIDTH, hs); rfbi_write_reg(RFBI_VSYNC_WIDTH, vs); @@ -672,7 +655,6 @@ int omap_rfbi_setup_te(enum omap_rfbi_te_mode mode, l &= ~(1 << 20); else l |= 1 << 20; - rfbi_enable_clocks(0); return 0; } @@ -687,7 +669,6 @@ int omap_rfbi_enable_te(bool enable, unsigned line) if (line > (1 << 11) - 1) return -EINVAL; - rfbi_enable_clocks(1); l = rfbi_read_reg(RFBI_CONFIG(0)); l &= ~(0x3 << 2); if (enable) { @@ -697,7 +678,6 @@ int omap_rfbi_enable_te(bool enable, unsigned line) rfbi.te_enabled = 0; rfbi_write_reg(RFBI_CONFIG(0), l); rfbi_write_reg(RFBI_LINE_NUMBER, line); - rfbi_enable_clocks(0); return 0; } @@ -836,8 +816,6 @@ int rfbi_configure(int rfbi_module, int bpp, int lines) break; } - rfbi_enable_clocks(1); - REG_FLD_MOD(RFBI_CONTROL, 0, 3, 2); /* clear CS */ l = 0; @@ -871,8 +849,6 @@ int rfbi_configure(int rfbi_module, int bpp, int lines) DSSDBG("RFBI config: bpp %d, lines %d, cycles: 0x%x 0x%x 0x%x\n", bpp, lines, cycle1, cycle2, cycle3); - rfbi_enable_clocks(0); - return 0; } EXPORT_SYMBOL(rfbi_configure); @@ -975,6 +951,8 @@ int omapdss_rfbi_display_enable(struct omap_dss_device *dssdev) { int r; + rfbi_enable_clocks(1); + r = omap_dss_start_device(dssdev); if (r) { DSSERR("failed to start device\n"); @@ -1017,6 +995,8 @@ void omapdss_rfbi_display_disable(struct omap_dss_device *dssdev) omap_dispc_unregister_isr(framedone_callback, NULL, DISPC_IRQ_FRAMEDONE); omap_dss_stop_device(dssdev); + + rfbi_enable_clocks(0); } EXPORT_SYMBOL(omapdss_rfbi_display_disable); |