backlight: ldim: add custome bl region num support for iw7027

PD#170488: ldim: add custome bl region num support for iw7027

Change-Id: If57cc7dd77f6143ce6c904716750c3edbfcbd546
Signed-off-by: Evoke Zhang <evoke.zhang@amlogic.com>

diff --git a/drivers/amlogic/media/vout/backlight/aml_ldim/iw7027_bl.c b/drivers/amlogic/media/vout/backlight/aml_ldim/iw7027_bl.c
index 53e572e97ebb7f580112a0d276797b9eb6ad304b..d3317fb6aa1c34e43cf96ee54561f8d2ffba009a 100644 (file)
--- a/drivers/amlogic/media/vout/backlight/aml_ldim/iw7027_bl.c
+++ b/drivers/amlogic/media/vout/backlight/aml_ldim/iw7027_bl.c
@@ -68,10 +68,8 @@ struct iw7027_s {
 };
 struct iw7027_s *bl_iw7027;
 
-static int test_brightness[] = {
-       0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-       0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
-};
+static unsigned short *test_brightness;
+static unsigned char *val_brightness;
 
 static int iw7027_wreg(struct spi_device *spi, u8 addr, u8 val)
 {
@@ -313,14 +311,16 @@ static int iw7027_spi_dump_high(char *buf)
 static int iw7027_spi_dump_dim(char *buf)
 {
        int len = 0;
-       unsigned int i;
+       unsigned int i, num;
        unsigned char val;
+       struct aml_ldim_driver_s *ldim_drv = aml_ldim_get_driver();
 
        if (buf == NULL)
                return len;
 
        len += sprintf(buf, "iw7027 reg dimming:\n");
-       for (i = 0x40; i <= 0x54; i++) {
+       num = ldim_drv->ldev_conf->bl_regnum;
+       for (i = 0x40; i <= (0x40 + (num * 2)); i++) {
                iw7027_rreg(bl_iw7027->spi, i, &val);
                len += sprintf(buf+len, "  0x%02x=0x%02x\n", i, val);
        }
@@ -339,25 +339,35 @@ static inline unsigned int iw7027_get_value(unsigned int level)
        return val;
 }
 
+static int smr_cnt;
 static int iw7027_smr(unsigned short *buf, unsigned char len)
 {
        int i;
        unsigned int value_flag = 0, temp;
-       unsigned char val[20];
-       unsigned short *mapping;
+       unsigned short *mapping, num;
        struct aml_ldim_driver_s *ldim_drv = aml_ldim_get_driver();
 
+       if (smr_cnt++ >= 30)
+               smr_cnt = 0;
+
        if (iw7027_on_flag == 0) {
-               if (ldim_debug_print)
+               if (smr_cnt == 0)
                        LDIMPR("%s: on_flag=%d\n", __func__, iw7027_on_flag);
                return 0;
        }
-       if (len != 10) {
-               LDIMERR("%s: data len %d invalid\n", __func__, len);
+       num = ldim_drv->ldev_conf->bl_regnum;
+       if (len != num) {
+               if (smr_cnt == 0)
+                       LDIMERR("%s: data len %d invalid\n", __func__, len);
+               return -1;
+       }
+       if (val_brightness == NULL) {
+               if (smr_cnt == 0)
+                       LDIMERR("%s: val_brightness is null\n", __func__);
                return -1;
        }
        if (iw7027_spi_op_flag) {
-               if (ldim_debug_print) {
+               if (smr_cnt == 0) {
                        LDIMPR("%s: spi_op_flag=%d\n",
                                __func__, iw7027_spi_op_flag);
                }
@@ -371,26 +381,31 @@ static int iw7027_smr(unsigned short *buf, unsigned char len)
        dim_min = ldim_drv->ldev_conf->dim_min;
 
        if (bl_iw7027->test_mode) {
-               for (i = 0; i < 10; i++) {
-                       val[2*i] = (test_brightness[i] >> 8) & 0xf;
-                       val[2*i+1] = test_brightness[i] & 0xff;
+               if (test_brightness == NULL) {
+                       if (smr_cnt == 0)
+                               LDIMERR("test_brightness is null\n");
+                       return 0;
+               }
+               for (i = 0; i < num; i++) {
+                       val_brightness[2*i] = (test_brightness[i] >> 8) & 0xf;
+                       val_brightness[2*i+1] = test_brightness[i] & 0xff;
                }
        } else {
-               for (i = 0; i < 10; i++)
+               for (i = 0; i < num; i++)
                        value_flag += buf[i];
                if (value_flag == 0) {
-                       for (i = 0; i < 20; i++)
-                               val[i] = 0;
+                       for (i = 0; i < (num * 2); i++)
+                               val_brightness[i] = 0;
                } else {
-                       for (i = 0; i < 10; i++) {
+                       for (i = 0; i < num; i++) {
                                temp = iw7027_get_value(buf[mapping[i]]);
-                               val[2*i] = (temp >> 8) & 0xf;
-                               val[2*i+1] = temp & 0xff;
+                               val_brightness[2*i] = (temp >> 8) & 0xf;
+                               val_brightness[2*i+1] = temp & 0xff;
                        }
                }
        }
 
-       iw7027_wregs(bl_iw7027->spi, 0x40, val, 20);
+       iw7027_wregs(bl_iw7027->spi, 0x40, val_brightness, (num * 2));
 
        iw7027_spi_op_flag = 0;
        return 0;
@@ -433,15 +448,14 @@ static ssize_t iw7027_show(struct class *class,
        } else if (!strcmp(attr->attr.name, "test")) {
                ret = sprintf(buf, "test mode=%d\n", bl->test_mode);
        } else if (!strcmp(attr->attr.name, "brightness")) {
-               ret = sprintf(buf, "0x%x,0x%x,0x%x,0x%x,0x%x,0x%x,0x%x,0x%x\n",
-                               test_brightness[0],
-                               test_brightness[1],
-                               test_brightness[2],
-                               test_brightness[3],
-                               test_brightness[4],
-                               test_brightness[5],
-                               test_brightness[6],
-                               test_brightness[7]);
+               if (test_brightness == NULL) {
+                       ret = sprintf(buf, "test_brightness is null\n");
+                       return ret;
+               }
+               ret = sprintf(buf, "test_brightness: ");
+               for (i = 0; i < ldim_drv->ldev_conf->bl_regnum; i++)
+                       ret += sprintf(buf+ret, " 0x%x", test_brightness[i]);
+               ret += sprintf(buf+ret, "\n");
        } else if (!strcmp(attr->attr.name, "status")) {
                ret = sprintf(buf, "iw7027 status:\n"
                                "dev_index      = %d\n"
@@ -509,6 +523,7 @@ static ssize_t iw7027_show(struct class *class,
 static ssize_t iw7027_store(struct class *class,
        struct class_attribute *attr, const char *buf, size_t count)
 {
+       struct aml_ldim_driver_s *ldim_drv = aml_ldim_get_driver();
        struct iw7027_s *bl = container_of(class, struct iw7027_s, cls);
        unsigned int val, val2;
        unsigned char reg_addr, reg_val;
@@ -556,9 +571,14 @@ static ssize_t iw7027_store(struct class *class,
        } else if (!strcmp(attr->attr.name, "brightness")) {
                i = sscanf(buf, "%d %d", &val, &val2);
                val &= 0xfff;
-               LDIMPR("brightness=%d, index=%d\n", val, val2);
-               if ((i == 2) && (val2 < ARRAY_SIZE(test_brightness)))
-                       test_brightness[val2] = val;
+               if (test_brightness == NULL) {
+                       LDIMERR("test_brightness is null\n");
+                       return count;
+               }
+               if ((i == 2) && (val2 < ldim_drv->ldev_conf->bl_regnum)) {
+                       test_brightness[val2] = (unsigned short)val;
+                       LDIMPR("brightness=%d, index=%d\n", val, val2);
+               }
        } else
                LDIMERR("LDIM argment error!\n");
        return count;
@@ -625,7 +645,7 @@ static struct spi_driver ldim_spi_dev_driver = {
 int ldim_dev_iw7027_probe(void)
 {
        struct aml_ldim_driver_s *ldim_drv = aml_ldim_get_driver();
-       int ret;
+       int ret, i;
 
        iw7027_on_flag = 0;
        iw7027_spi_op_flag = 0;
@@ -640,6 +660,7 @@ int ldim_dev_iw7027_probe(void)
        ret = spi_register_driver(&ldim_spi_dev_driver);
        if (ret) {
                LDIMERR("register ldim_dev spi driver failed\n");
+               kfree(bl_iw7027);
                return -1;
        }
 
@@ -650,6 +671,22 @@ int ldim_dev_iw7027_probe(void)
        bl_iw7027->cmd_size = ldim_drv->ldev_conf->cmd_size;
        bl_iw7027->init_data = ldim_drv->ldev_conf->init_on;
 
+       val_brightness = kcalloc(ldim_drv->ldev_conf->bl_regnum * 2,
+               sizeof(unsigned char), GFP_KERNEL);
+       if (val_brightness == NULL) {
+               LDIMERR("malloc val_brightness failed\n");
+               kfree(bl_iw7027);
+               return -1;
+       }
+       test_brightness = kcalloc(ldim_drv->ldev_conf->bl_regnum,
+               sizeof(unsigned short), GFP_KERNEL);
+       if (test_brightness == NULL) {
+               LDIMERR("malloc test_brightness failed\n");
+       } else {
+               for (i = 0; i < ldim_drv->ldev_conf->bl_regnum; i++)
+                       test_brightness[i] = 0xfff;
+       }
+
        iw7027_ldim_driver_update();
 
        bl_iw7027->cls.name = kzalloc(10, GFP_KERNEL);
@@ -657,7 +694,7 @@ int ldim_dev_iw7027_probe(void)
        bl_iw7027->cls.class_attrs = iw7027_class_attrs;
        ret = class_register(&bl_iw7027->cls);
        if (ret < 0)
-               pr_err("register iw7027 class failed\n");
+               LDIMERR("register iw7027 class failed\n");
 
        iw7027_on_flag = 1; /* default enable in uboot */
 
@@ -667,6 +704,11 @@ int ldim_dev_iw7027_probe(void)
 
 int ldim_dev_iw7027_remove(void)
 {
+       kfree(val_brightness);
+       val_brightness = NULL;
+       kfree(test_brightness);
+       test_brightness = NULL;
+
        spi_unregister_driver(&ldim_spi_dev_driver);
        kfree(bl_iw7027);
        bl_iw7027 = NULL;

diff --git a/drivers/amlogic/media/vout/backlight/aml_ldim/ldim_dev_drv.c b/drivers/amlogic/media/vout/backlight/aml_ldim/ldim_dev_drv.c
index 72a4cb1ce39df6ff7acc131eeebf8bfd77928208..3e061671cc1809c595a1b5357f808b743e3c26f6 100644 (file)
--- a/drivers/amlogic/media/vout/backlight/aml_ldim/ldim_dev_drv.c
+++ b/drivers/amlogic/media/vout/backlight/aml_ldim/ldim_dev_drv.c
@@ -79,6 +79,8 @@ struct ldim_dev_config_s ldim_dev_config = {
                .pwm_duty_max = 100,
                .pwm_duty_min = 1,
        },
+
+       .bl_regnum = 0,
 };
 
 #if 0
@@ -457,7 +459,9 @@ static void ldim_config_print(void)
                        ldim_drv->ldev_conf->en_gpio_off,
                        ldim_drv->ldev_conf->dim_min,
                        ldim_drv->ldev_conf->dim_max);
-               n = ldim_drv->ldim_conf->row * ldim_drv->ldim_conf->col;
+               pr_info("region_num            = %d\n",
+                       ldim_drv->ldev_conf->bl_regnum);
+               n = ldim_drv->ldev_conf->bl_regnum;
                len = (n * 4) + 50;
                str = kcalloc(len, sizeof(char), GFP_KERNEL);
                if (str == NULL) {
@@ -466,7 +470,7 @@ static void ldim_config_print(void)
                        len = sprintf(str, "region_mapping:\n  ");
                        for (i = 0; i < n; i++) {
                                len += sprintf(str+len, "%d,",
-                                       ldim_dev_config.bl_mapping[i]);
+                                       ldim_drv->ldev_conf->bl_mapping[i]);
                        }
                        pr_info("%s\n\n", str);
                        kfree(str);
@@ -634,6 +638,7 @@ static int ldim_dev_get_config_from_dts(struct device_node *np, int index)
                for (i = 0; i < val; i++)
                        ldim_dev_config.bl_mapping[i] = (unsigned short)temp[i];
        }
+       ldim_dev_config.bl_regnum = (unsigned short)val;
 
        ret = of_property_read_u32(child, "type", &val);
        if (ret) {

diff --git a/include/linux/amlogic/media/vout/lcd/aml_ldim.h b/include/linux/amlogic/media/vout/lcd/aml_ldim.h
index 6840be98d01dfeae628f397de52b256cd34810b0..c672e418df8797e56d76f824a8206079d457d2e3 100644 (file)
--- a/include/linux/amlogic/media/vout/lcd/aml_ldim.h
+++ b/include/linux/amlogic/media/vout/lcd/aml_ldim.h
@@ -74,6 +74,7 @@ struct ldim_dev_config_s {
 
        struct bl_pwm_config_s pwm_config;
 
+       unsigned short bl_regnum;
        unsigned short bl_mapping[LD_BLKREGNUM];
 };