refactor(st-ddr): reorganize generic and specific elements
stm32mp_ddrctl structure contains DDRCTRL registers definitions.
stm32mp_ddr_info contains general DDR information extracted from DT.
stm32mp_ddr_size moves to the generic side.
stm32mp1_ddr_priv contains platform private data.
stm32mp_ddr_dt_get_info() and stm32mp_ddr_dt_get_param() allow to
retrieve data from DT. They are located in new generic c/h files in
which stm32mp_ddr_param structure is declared. Platform makefile
is updated.
Adapt driver with this new classification.
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Change-Id: I4187376c9fff1a30e7a94407d188391547107997
diff --git a/drivers/st/ddr/stm32mp_ram.c b/drivers/st/ddr/stm32mp_ram.c
new file mode 100644
index 0000000..1e555ad
--- /dev/null
+++ b/drivers/st/ddr/stm32mp_ram.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2022, STMicroelectronics - All Rights Reserved
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <errno.h>
+#include <stdbool.h>
+
+#include <common/fdt_wrappers.h>
+#include <drivers/st/stm32mp_ram.h>
+#include <libfdt.h>
+
+#include <platform_def.h>
+
+int stm32mp_ddr_dt_get_info(void *fdt, int node, struct stm32mp_ddr_info *info)
+{
+ int ret;
+
+ ret = fdt_read_uint32(fdt, node, "st,mem-speed", &info->speed);
+ if (ret < 0) {
+ VERBOSE("%s: no st,mem-speed\n", __func__);
+ return -EINVAL;
+ }
+ ret = fdt_read_uint32(fdt, node, "st,mem-size", &info->size);
+ if (ret < 0) {
+ VERBOSE("%s: no st,mem-size\n", __func__);
+ return -EINVAL;
+ }
+ info->name = fdt_getprop(fdt, node, "st,mem-name", NULL);
+ if (info->name == NULL) {
+ VERBOSE("%s: no st,mem-name\n", __func__);
+ return -EINVAL;
+ }
+
+ INFO("RAM: %s\n", info->name);
+
+ return 0;
+}
+
+int stm32mp_ddr_dt_get_param(void *fdt, int node, const struct stm32mp_ddr_param *param,
+ uint32_t param_size, uintptr_t config)
+{
+ int ret;
+ uint32_t idx;
+
+ for (idx = 0U; idx < param_size; idx++) {
+ ret = fdt_read_uint32_array(fdt, node, param[idx].name, param[idx].size,
+ (void *)(config + param[idx].offset));
+
+ VERBOSE("%s: %s[0x%x] = %d\n", __func__, param[idx].name, param[idx].size, ret);
+ if (ret != 0) {
+ ERROR("%s: Cannot read %s, error=%d\n", __func__, param[idx].name, ret);
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}