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| author | Maxime Ripard <maxime.ripard@bootlin.com> | 2019-01-18 15:51:28 +0100 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@bootlin.com> | 2019-01-18 21:12:00 +0100 |
| commit | 35f366544ccda26037128eb36c83473989a5fa1c (patch) | |
| tree | 259fe565341ddaf1e17a3b676d55dc5ede5773f4 /drivers/gpu/drm/sun4i/sun4i_frontend.c | |
| parent | drm/sun4i: Move access control before setting the register as documented (diff) | |
| download | linux-35f366544ccda26037128eb36c83473989a5fa1c.tar.xz linux-35f366544ccda26037128eb36c83473989a5fa1c.zip | |
drm/sun4i: frontend: Add a quirk structure
The ACCESS_CTRL bit is not found on all the variants of the frontend, so
let's introduce a structure that will hold whether or not we need to set
it, and associate it with the compatible.
This will be extended for further similar quirks later on.
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190118145133.21281-19-paul.kocialkowski@bootlin.com
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_frontend.c')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_frontend.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_frontend.c b/drivers/gpu/drm/sun4i/sun4i_frontend.c index 88ac77518610..6636b1998a76 100644 --- a/drivers/gpu/drm/sun4i/sun4i_frontend.c +++ b/drivers/gpu/drm/sun4i/sun4i_frontend.c @@ -10,6 +10,7 @@ #include <linux/clk.h> #include <linux/component.h> #include <linux/module.h> +#include <linux/of_device.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/regmap.h> @@ -75,9 +76,10 @@ static void sun4i_frontend_scaler_init(struct sun4i_frontend *frontend) { int i; - regmap_write_bits(frontend->regs, SUN4I_FRONTEND_FRM_CTRL_REG, - SUN4I_FRONTEND_FRM_CTRL_COEF_ACCESS_CTRL, - SUN4I_FRONTEND_FRM_CTRL_COEF_ACCESS_CTRL); + if (frontend->data->has_coef_access_ctrl) + regmap_write_bits(frontend->regs, SUN4I_FRONTEND_FRM_CTRL_REG, + SUN4I_FRONTEND_FRM_CTRL_COEF_ACCESS_CTRL, + SUN4I_FRONTEND_FRM_CTRL_COEF_ACCESS_CTRL); for (i = 0; i < 32; i++) { regmap_write(frontend->regs, SUN4I_FRONTEND_CH0_HORZCOEF0_REG(i), @@ -553,6 +555,10 @@ static int sun4i_frontend_bind(struct device *dev, struct device *master, frontend->dev = dev; frontend->node = dev->of_node; + frontend->data = of_device_get_match_data(dev); + if (!frontend->data) + return -ENODEV; + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); regs = devm_ioremap_resource(dev, res); if (IS_ERR(regs)) @@ -665,8 +671,15 @@ static const struct dev_pm_ops sun4i_frontend_pm_ops = { .runtime_suspend = sun4i_frontend_runtime_suspend, }; +static const struct sun4i_frontend_data sun8i_a33_frontend = { + .has_coef_access_ctrl = true, +}; + const struct of_device_id sun4i_frontend_of_table[] = { - { .compatible = "allwinner,sun8i-a33-display-frontend" }, + { + .compatible = "allwinner,sun8i-a33-display-frontend", + .data = &sun8i_a33_frontend + }, { } }; EXPORT_SYMBOL(sun4i_frontend_of_table); |