diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2019-12-06 10:43:01 +0100 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-12-14 00:26:10 +0100 |
| commit | cd6a1ca38698b0c8ff8afe5074fe53aff3647973 (patch) | |
| tree | 92d2a18dc0bd3e65b90eff30381794eb0e77c2b7 /arch/x86 | |
| parent | 2840f1f0e4175bd0dac292408189332cc597d163 (diff) | |
drm/gma500: Pass GPIO for Intel MID using descriptors
The GMA500 driver is using the legacy GPIO API to fetch
three optional display control GPIO lines from the SFI
description used by the Medfield platform.
Switch this over to use GPIO descriptors and delete the
custom platform data.
We create three new static locals in the tc35876x bridge
code but it is hardly any worse than the I2C client static
local already there: I tried first to move it to the DRM
driver state container but there are workarounds for
probe order in the code so I just stayed off it, as the
result is unpredictable.
People wanting to do a more throrugh and proper cleanup
of the GMA500 driver can work on top of this, I can't
solve much more since I don't have access to the hardware,
I can only attempt to tidy up my GPIO corner.
Cc: Daniel Stone <daniels@collabora.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191206094301.76368-1-linus.walleij@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/platform/intel-mid/device_libs/platform_tc35876x.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_tc35876x.c b/arch/x86/platform/intel-mid/device_libs/platform_tc35876x.c index 44d1f884c3d3..139738bbdd36 100644 --- a/arch/x86/platform/intel-mid/device_libs/platform_tc35876x.c +++ b/arch/x86/platform/intel-mid/device_libs/platform_tc35876x.c @@ -6,21 +6,31 @@ * Author: Sathyanarayanan Kuppuswamy <sathyanarayanan.kuppuswamy@intel.com> */ -#include <linux/gpio.h> -#include <linux/platform_data/tc35876x.h> +#include <linux/gpio/machine.h> #include <asm/intel-mid.h> +static struct gpiod_lookup_table tc35876x_gpio_table = { + .dev_id = "i2c_disp_brig", + .table = { + GPIO_LOOKUP("0000:00:0c.0", -1, "bridge-reset", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("0000:00:0c.0", -1, "bl-en", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("0000:00:0c.0", -1, "vadd", GPIO_ACTIVE_HIGH), + { }, + }, +}; + /*tc35876x DSI_LVDS bridge chip and panel platform data*/ static void *tc35876x_platform_data(void *data) { - static struct tc35876x_platform_data pdata; + struct gpiod_lookup_table *table = &tc35876x_gpio_table; + struct gpiod_lookup *lookup = table->table; - /* gpio pins set to -1 will not be used by the driver */ - pdata.gpio_bridge_reset = get_gpio_by_name("LCMB_RXEN"); - pdata.gpio_panel_bl_en = get_gpio_by_name("6S6P_BL_EN"); - pdata.gpio_panel_vadd = get_gpio_by_name("EN_VREG_LCD_V3P3"); + lookup[0].chip_hwnum = get_gpio_by_name("LCMB_RXEN"); + lookup[1].chip_hwnum = get_gpio_by_name("6S6P_BL_EN"); + lookup[2].chip_hwnum = get_gpio_by_name("EN_VREG_LCD_V3P3"); + gpiod_add_lookup_table(table); - return &pdata; + return NULL; } static const struct devs_id tc35876x_dev_id __initconst = { |