diff options
Diffstat (limited to 'drivers/video/omap2/dss/dss.c')
| -rw-r--r-- | drivers/video/omap2/dss/dss.c | 65 |
1 files changed, 34 insertions, 31 deletions
diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c index bd2d5e159463..6ea1ff149f6f 100644 --- a/drivers/video/omap2/dss/dss.c +++ b/drivers/video/omap2/dss/dss.c @@ -62,6 +62,9 @@ struct dss_reg { #define REG_FLD_MOD(idx, val, start, end) \ dss_write_reg(idx, FLD_MOD(dss_read_reg(idx), val, start, end)) +static int dss_runtime_get(void); +static void dss_runtime_put(void); + static struct { struct platform_device *pdev; void __iomem *base; @@ -277,7 +280,7 @@ void dss_dump_clocks(struct seq_file *s) dss_runtime_put(); } -void dss_dump_regs(struct seq_file *s) +static void dss_dump_regs(struct seq_file *s) { #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dss_read_reg(r)) @@ -322,6 +325,7 @@ void dss_select_dispc_clk_source(enum omap_dss_clk_source clk_src) break; default: BUG(); + return; } dss_feat_get_reg_field(FEAT_REG_DISPC_CLK_SWITCH, &start, &end); @@ -335,7 +339,7 @@ void dss_select_dsi_clk_source(int dsi_module, enum omap_dss_clk_source clk_src) { struct platform_device *dsidev; - int b; + int b, pos; switch (clk_src) { case OMAP_DSS_CLK_SRC_FCK: @@ -355,9 +359,11 @@ void dss_select_dsi_clk_source(int dsi_module, break; default: BUG(); + return; } - REG_FLD_MOD(DSS_CONTROL, b, 1, 1); /* DSI_CLK_SWITCH */ + pos = dsi_module == 0 ? 1 : 10; + REG_FLD_MOD(DSS_CONTROL, b, pos, pos); /* DSIx_CLK_SWITCH */ dss.dsi_clk_source[dsi_module] = clk_src; } @@ -389,6 +395,7 @@ void dss_select_lcd_clk_source(enum omap_channel channel, break; default: BUG(); + return; } pos = channel == OMAP_DSS_CHANNEL_LCD ? 0 : 12; @@ -706,7 +713,7 @@ static void dss_put_clocks(void) clk_put(dss.dss_clk); } -int dss_runtime_get(void) +static int dss_runtime_get(void) { int r; @@ -717,7 +724,7 @@ int dss_runtime_get(void) return r < 0 ? r : 0; } -void dss_runtime_put(void) +static void dss_runtime_put(void) { int r; @@ -740,7 +747,7 @@ void dss_debug_dump_clocks(struct seq_file *s) #endif /* DSS HW IP initialisation */ -static int omap_dsshw_probe(struct platform_device *pdev) +static int __init omap_dsshw_probe(struct platform_device *pdev) { struct resource *dss_mem; u32 rev; @@ -785,40 +792,24 @@ static int omap_dsshw_probe(struct platform_device *pdev) dss.lcd_clk_source[0] = OMAP_DSS_CLK_SRC_FCK; dss.lcd_clk_source[1] = OMAP_DSS_CLK_SRC_FCK; - r = dpi_init(); - if (r) { - DSSERR("Failed to initialize DPI\n"); - goto err_dpi; - } - - r = sdi_init(); - if (r) { - DSSERR("Failed to initialize SDI\n"); - goto err_sdi; - } - rev = dss_read_reg(DSS_REVISION); printk(KERN_INFO "OMAP DSS rev %d.%d\n", FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0)); dss_runtime_put(); + dss_debugfs_create_file("dss", dss_dump_regs); + return 0; -err_sdi: - dpi_exit(); -err_dpi: - dss_runtime_put(); + err_runtime_get: pm_runtime_disable(&pdev->dev); dss_put_clocks(); return r; } -static int omap_dsshw_remove(struct platform_device *pdev) +static int __exit omap_dsshw_remove(struct platform_device *pdev) { - dpi_exit(); - sdi_exit(); - pm_runtime_disable(&pdev->dev); dss_put_clocks(); @@ -829,11 +820,24 @@ static int omap_dsshw_remove(struct platform_device *pdev) static int dss_runtime_suspend(struct device *dev) { dss_save_context(); + dss_set_min_bus_tput(dev, 0); return 0; } static int dss_runtime_resume(struct device *dev) { + int r; + /* + * Set an arbitrarily high tput request to ensure OPP100. + * What we should really do is to make a request to stay in OPP100, + * without any tput requirements, but that is not currently possible + * via the PM layer. + */ + + r = dss_set_min_bus_tput(dev, 1000000000); + if (r) + return r; + dss_restore_context(); return 0; } @@ -844,8 +848,7 @@ static const struct dev_pm_ops dss_pm_ops = { }; static struct platform_driver omap_dsshw_driver = { - .probe = omap_dsshw_probe, - .remove = omap_dsshw_remove, + .remove = __exit_p(omap_dsshw_remove), .driver = { .name = "omapdss_dss", .owner = THIS_MODULE, @@ -853,12 +856,12 @@ static struct platform_driver omap_dsshw_driver = { }, }; -int dss_init_platform_driver(void) +int __init dss_init_platform_driver(void) { - return platform_driver_register(&omap_dsshw_driver); + return platform_driver_probe(&omap_dsshw_driver, omap_dsshw_probe); } void dss_uninit_platform_driver(void) { - return platform_driver_unregister(&omap_dsshw_driver); + platform_driver_unregister(&omap_dsshw_driver); } |