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n810bm: Simplify calib pointer access

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SVN-Revision: 25605
This commit is contained in:
Michael Büsch
2011-02-20 15:04:20 +00:00
parent f277f3bf4f
commit b876314d2d
1 changed files with 72 additions and 49 deletions
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111
target/linux/omap24xx/patches-2.6.37/900-n810-battery-management.patch
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@@ -41,8 +41,8 @@ Index: linux-2.6.37.1/drivers/cbus/Makefile
Index: linux-2.6.37.1/drivers/cbus/n810bm_main.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.37.1/drivers/cbus/n810bm_main.c 2011-02-20 15:11:55.764356685 +0100
@@ -0,0 +1,1559 @@
+++ linux-2.6.37.1/drivers/cbus/n810bm_main.c 2011-02-20 15:58:42.058267135 +0100
@@ -0,0 +1,1582 @@
+/*
+ * Nokia n810 battery management
+ *
@@ -347,6 +347,23 @@ Index: linux-2.6.37.1/drivers/cbus/n810bm_main.c
+ return value;
+}
+
+static struct n810bm_adc_calib * n810bm_get_adc_calib(struct n810bm *bm,
+ enum n810bm_pmm_adc_id id)
+{
+ unsigned int index = 0;
+ struct n810bm_adc_calib *cal;
+
+ if (id != N810BM_PMM_ADC_0xFE)
+ index = (unsigned int)id + 1;
+ if (index >= ARRAY_SIZE(bm->calib.adc))
+ return NULL;
+
+ cal = &bm->calib.adc[index];
+ WARN_ON(cal->id && cal->id != id);
+
+ return cal;
+}
+
+static int pmm_record_get(struct n810bm *bm,
+ const struct firmware *pmm_block,
+ void *buffer, size_t length,
@@ -391,9 +408,9 @@ Index: linux-2.6.37.1/drivers/cbus/n810bm_main.c
+ __le32 field2;
+} __packed;
+
+static void extract_group1_elem(struct n810bm *bm,
+static int extract_group1_elem(struct n810bm *bm,
+ const struct firmware *pmm_block,
+ const u8 *pmm_adc_ids, size_t nr_pmm_adc_ids,
+ const enum n810bm_pmm_adc_id *pmm_adc_ids, size_t nr_pmm_adc_ids,
+ u32 field1_mask, u32 field2_mask)
+{
+ struct group1_element elem;
@@ -402,39 +419,51 @@ Index: linux-2.6.37.1/drivers/cbus/n810bm_main.c
+ struct n810bm_adc_calib *adc_calib;
+
+ for (i = 0; i < nr_pmm_adc_ids; i++) {
+ element_nr = pmm_adc_ids[i] + 3;
+ element_nr = (unsigned int)(pmm_adc_ids[i]) + 3;
+
+ err = pmm_record_get(bm, pmm_block, &elem, sizeof(elem),
+ 1, element_nr, 0);
+ if (err)
+ continue;
+ WARN_ON(element_nr - 3 + 1 >= ARRAY_SIZE(bm->calib.adc));
+ adc_calib = &bm->calib.adc[element_nr - 3 + 1];
+ adc_calib = n810bm_get_adc_calib(bm, elem.id);
+ if (!adc_calib) {
+ dev_err(&bm->pdev->dev, "extract_group1_elem: "
+ "Could not get calib element for 0x%02X",
+ elem.id);
+ return -EINVAL;
+ }
+
+ if (adc_calib->flags == elem.flags) {
+ WARN_ON(adc_calib->id != elem.id);
+ adc_calib->field1 = le32_to_cpu(elem.field1) & field1_mask;
+ adc_calib->field2 = le32_to_cpu(elem.field2) & field2_mask;
+ } else {
+ dev_dbg(&bm->pdev->dev, "extract_group1_elem: "
+ "Not extracting fields due to flags mismatch: "
+ "0x%02X vs 0x%02X",
+ adc_calib->flags, elem.flags);
+ }
+ }
+
+ return 0;
+}
+
+static int n810bm_parse_pmm_group1(struct n810bm *bm,
+ const struct firmware *pmm_block)
+{
+ struct n810bm_adc_calib *adc_calib;
+ struct group1_element elem;
+ int err;
+
+ static const u8 pmm_adc_ids_0[] = {
+ static const enum n810bm_pmm_adc_id pmm_adc_ids_1[] = {
+ N810BM_PMM_ADC_0x01,
+ N810BM_PMM_ADC_0x02,
+ N810BM_PMM_ADC_0x13,
+ N810BM_PMM_ADC_0x0E,
+ };
+ static const u8 pmm_adc_ids_1[] = {
+ static const enum n810bm_pmm_adc_id pmm_adc_ids_2[] = {
+ N810BM_PMM_ADC_0x04,
+ };
+ static const u8 pmm_adc_ids_2[] = {
+ static const enum n810bm_pmm_adc_id pmm_adc_ids_3[] = {
+ N810BM_PMM_ADC_BATTEMP,
+ };
+
@@ -447,21 +476,33 @@ Index: linux-2.6.37.1/drivers/cbus/n810bm_main.c
+ return err;
+ }
+ if (elem.id == N810BM_PMM_ADC_0xFE && elem.flags == 0x05) {
+ bm->calib.adc[0].id = elem.id;
+ bm->calib.adc[0].flags = elem.flags;
+ bm->calib.adc[0].field1 = le32_to_cpu(elem.field1);
+ bm->calib.adc[0].field2 = le32_to_cpu(elem.field2);
+ adc_calib = n810bm_get_adc_calib(bm, elem.id);
+ if (!adc_calib) {
+ dev_err(&bm->pdev->dev,
+ "calib extract: Failed to get 0xFE calib");
+ return -EINVAL;
+ }
+ adc_calib->id = elem.id;
+ adc_calib->flags = elem.flags;
+ adc_calib->field1 = le32_to_cpu(elem.field1);
+ adc_calib->field2 = le32_to_cpu(elem.field2);
+ }
+
+ extract_group1_elem(bm, pmm_block,
+ pmm_adc_ids_0, ARRAY_SIZE(pmm_adc_ids_0),
+ 0xFFFFFFFF, 0xFFFFFFFF);
+ extract_group1_elem(bm, pmm_block,
+ err = extract_group1_elem(bm, pmm_block,
+ pmm_adc_ids_1, ARRAY_SIZE(pmm_adc_ids_1),
+ 0xFFFFFFFF, 0);
+ extract_group1_elem(bm, pmm_block,
+ 0xFFFFFFFF, 0xFFFFFFFF);
+ if (err)
+ return err;
+ err = extract_group1_elem(bm, pmm_block,
+ pmm_adc_ids_2, ARRAY_SIZE(pmm_adc_ids_2),
+ 0xFFFFFFFF, 0);
+ if (err)
+ return err;
+ err = extract_group1_elem(bm, pmm_block,
+ pmm_adc_ids_3, ARRAY_SIZE(pmm_adc_ids_3),
+ 0xFFFFFFFF, 0x0000FFFF);
+ if (err)
+ return err;
+
+ return 0;
+}
@@ -476,8 +517,7 @@ Index: linux-2.6.37.1/drivers/cbus/n810bm_main.c
+static void n810bm_adc_calib_set_defaults(struct n810bm *bm)
+{
+ struct n810bm_adc_calib *adc_calib;
+ const struct n810bm_adc_calib *def;
+ unsigned int i, index;
+ unsigned int i;
+
+ static const struct n810bm_adc_calib defaults[] = {
+ /* ADC group-nr 0 */
@@ -577,30 +617,13 @@ Index: linux-2.6.37.1/drivers/cbus/n810bm_main.c
+
+ /* Copy the defaults */
+ for (i = 0; i < ARRAY_SIZE(defaults); i++) {
+ def = &defaults[i];
+
+ index = 0;
+ if (def->id != N810BM_PMM_ADC_0xFE)
+ index = def->id + 1;
+ WARN_ON(index >= ARRAY_SIZE(bm->calib.adc));
+
+ adc_calib = &bm->calib.adc[index];
+ *adc_calib = *def;
+ adc_calib = n810bm_get_adc_calib(bm, defaults[i].id);
+ if (WARN_ON(!adc_calib))
+ continue;
+ *adc_calib = defaults[i];
+ }
+}
+
+static const struct n810bm_adc_calib * n810bm_get_adc_calib(struct n810bm *bm,
+ enum n810bm_pmm_adc_id id)
+{
+ unsigned int index = 0;
+
+ if (id != N810BM_PMM_ADC_0xFE)
+ index = (unsigned int)id + 1;
+ WARN_ON(index >= ARRAY_SIZE(bm->calib.adc));
+
+ return &bm->calib.adc[index];
+}
+
+static int n810bm_parse_pmm_block(struct n810bm *bm,
+ const struct firmware *pmm_block)
+{