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@@ -20,6 +20,7 @@
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#include <linux/platform_data/clk-lpss.h>
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#include <linux/pm_domain.h>
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#include <linux/pm_runtime.h>
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+#include <linux/pwm.h>
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#include <linux/delay.h>
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#include "internal.h"
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@@ -154,6 +155,18 @@ static void byt_i2c_setup(struct lpss_private_data *pdata)
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writel(0, pdata->mmio_base + LPSS_I2C_ENABLE);
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}
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+/* BSW PWM used for backlight control by the i915 driver */
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+static struct pwm_lookup bsw_pwm_lookup[] = {
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+ PWM_LOOKUP_WITH_MODULE("80862288:00", 0, "0000:00:02.0",
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+ "pwm_backlight", 0, PWM_POLARITY_NORMAL,
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+ "pwm-lpss-platform"),
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+};
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+
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+static void bsw_pwm_setup(struct lpss_private_data *pdata)
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+{
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+ pwm_add_table(bsw_pwm_lookup, ARRAY_SIZE(bsw_pwm_lookup));
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+}
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+
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static const struct lpss_device_desc lpt_dev_desc = {
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.flags = LPSS_CLK | LPSS_CLK_GATE | LPSS_CLK_DIVIDER | LPSS_LTR,
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.prv_offset = 0x800,
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@@ -191,6 +204,7 @@ static const struct lpss_device_desc byt_pwm_dev_desc = {
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static const struct lpss_device_desc bsw_pwm_dev_desc = {
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.flags = LPSS_SAVE_CTX | LPSS_NO_D3_DELAY,
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+ .setup = bsw_pwm_setup,
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};
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static const struct lpss_device_desc byt_uart_dev_desc = {
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Thierry Reding