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Commit 7dafa542 authored by Lijuan Gao's avatar Lijuan Gao
Browse files

backlight: qcom-spmi-wled: Fix compilation error 



This fixes below compilation error for 32bit kernel
build. Compiler reference __aeabi_uldivmod if there
is a 64bit division. Change is to use div_s64 to fix
this.

qcom-spmi-wled.c: undefined reference to `__aeabi_uldivmod'.

Change-Id: Ib63574be472b094297a4639bb3c5f97751c19c9f
Signed-off-by: default avatarLijuan Gao <lijuang@codeaurora.org>
parent da17976d

drivers/video/backlight/qcom-spmi-wled.c

+12 −7
Original line number Diff line number Diff line
@@ -1510,7 +1510,8 @@ static int wled_get_max_avail_current(struct led_classdev *led_cdev, 
					int *max_current)

{

	struct wled *wled;

	int rc, ocv_mv, r_bat_mohms, i_bat_ma, i_sink_ma = 0, max_fsc_ma;

	int rc, ocv_mv, r_bat_mohms, i_bat_ma;

	int64_t max_fsc_ma, i_sink_ma = 0;

	int64_t p_out_string, p_out, p_in, v_safe_mv, i_flash_ma, v_ph_mv;



	if (!strcmp(led_cdev->name, "wled_switch"))
@@ -1556,7 +1557,7 @@ static int wled_get_max_avail_current(struct led_classdev *led_cdev, 
	p_out_string = ((wled->leds_per_string * V_LED_MV) + V_HDRM_MV) *

			I_FLASH_MAX_MA;

	p_out = p_out_string * wled->num_strings;

	p_in = (p_out * 1000) / EFF_FACTOR;

	p_in = div_s64(p_out * 1000, EFF_FACTOR);



	pr_debug("p_out_string: %lld, p_out: %lld, p_in: %lld\n", p_out_string,

		p_out, p_in);
@@ -1568,8 +1569,9 @@ static int wled_get_max_avail_current(struct led_classdev *led_cdev, 
		return 0;

	}



	i_flash_ma = p_in / v_safe_mv;

	v_ph_mv = ocv_mv - ((i_bat_ma + i_flash_ma) * r_bat_mohms) / 1000;

	i_flash_ma = div_s64(p_in, v_safe_mv);

	v_ph_mv = ocv_mv - div_s64(((i_bat_ma + i_flash_ma) * r_bat_mohms),

							1000);



	pr_debug("v_safe: %lld, i_flash: %lld, v_ph: %lld\n", v_safe_mv,

		i_flash_ma, v_ph_mv);
@@ -1578,19 +1580,22 @@ static int wled_get_max_avail_current(struct led_classdev *led_cdev, 
	if (wled->num_strings == 3 && wled->leds_per_string == 8) {

		if (v_ph_mv < 3410) {

			/* For 8s3p, I_sink(mA) = 25.396 * Vph(V) - 26.154 */

			i_sink_ma = (((25396 * v_ph_mv) / 1000) - 26154) / 1000;

			i_sink_ma = div_s64((div_s64((25396 * v_ph_mv),

					1000) - 26154), 1000);

			i_sink_ma *= wled->num_strings;

		}

	} else if (wled->num_strings == 3 && wled->leds_per_string == 6) {

		if (v_ph_mv < 2800) {

			/* For 6s3p, I_sink(mA) = 41.311 * Vph(V) - 52.334 */

			i_sink_ma = (((41311 * v_ph_mv) / 1000) - 52334) / 1000;

			i_sink_ma = div_s64((div_s64((41311 * v_ph_mv),

					1000) - 52334), 1000);

			i_sink_ma *= wled->num_strings;

		}

	} else if (wled->num_strings == 4 && wled->leds_per_string == 6) {

		if (v_ph_mv < 3400) {

			/* For 6s4p, I_sink(mA) = 26.24 * Vph(V) - 24.834 */

			i_sink_ma = (((26240 * v_ph_mv) / 1000) - 24834) / 1000;

			i_sink_ma = div_s64((div_s64((26240 * v_ph_mv),

					1000) - 24834), 1000);

			i_sink_ma *= wled->num_strings;

		}

	} else if (v_ph_mv < 3200) {