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authorSimon Glass <sjg@chromium.org>2014-10-13 23:42:15 -0600
committerSimon Glass <sjg@chromium.org>2014-10-22 10:36:53 -0600
commitbe995a85455343f99c84ceacf0bf771eb2e85752 (patch)
tree2bfb96f571f8d1bf3b0023481f98732028c01aaa /drivers/misc
parent84d6cbd3029e8b16e201f1129c300fae258c0f9c (diff)
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dm: sandbox: cros_ec: Move sandbox cros_ec to driver module
Adjust the sandbox cros_ec emulation driver to work with driver model, and switch over to driver model for sandbox cros_ec. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/cros_ec_sandbox.c90
1 files changed, 85 insertions, 5 deletions
diff --git a/drivers/misc/cros_ec_sandbox.c b/drivers/misc/cros_ec_sandbox.c
index 431cf26..99cc529 100644
--- a/drivers/misc/cros_ec_sandbox.c
+++ b/drivers/misc/cros_ec_sandbox.c
@@ -8,6 +8,7 @@
#include <common.h>
#include <cros_ec.h>
+#include <dm.h>
#include <ec_commands.h>
#include <errno.h>
#include <hash.h>
@@ -85,7 +86,7 @@ struct ec_state {
struct ec_keymatrix_entry *matrix; /* the key matrix info */
uint8_t keyscan[KEYBOARD_COLS];
bool recovery_req;
-} s_state, *state;
+} s_state, *g_state;
/**
* cros_ec_read_state() - read the sandbox EC state from the state file
@@ -138,7 +139,7 @@ static int cros_ec_read_state(const void *blob, int node)
*/
static int cros_ec_write_state(void *blob, int node)
{
- struct ec_state *ec = &s_state;
+ struct ec_state *ec = g_state;
/* We are guaranteed enough space to write basic properties */
fdt_setprop_u32(blob, node, "current-image", ec->current_image);
@@ -369,7 +370,7 @@ static int process_cmd(struct ec_state *ec,
struct fmap_entry *entry;
int ret, size;
- entry = &state->ec_config.region[EC_FLASH_REGION_RW];
+ entry = &ec->ec_config.region[EC_FLASH_REGION_RW];
switch (req->cmd) {
case EC_VBOOT_HASH_RECALC:
@@ -426,7 +427,7 @@ static int process_cmd(struct ec_state *ec,
case EC_FLASH_REGION_RO:
case EC_FLASH_REGION_RW:
case EC_FLASH_REGION_WP_RO:
- entry = &state->ec_config.region[req->region];
+ entry = &ec->ec_config.region[req->region];
resp->offset = entry->offset;
resp->size = entry->length;
len = sizeof(*resp);
@@ -466,16 +467,24 @@ static int process_cmd(struct ec_state *ec,
return len;
}
+#ifdef CONFIG_DM_CROS_EC
+int cros_ec_sandbox_packet(struct udevice *udev, int out_bytes, int in_bytes)
+{
+ struct cros_ec_dev *dev = udev->uclass_priv;
+ struct ec_state *ec = dev_get_priv(dev->dev);
+#else
int cros_ec_sandbox_packet(struct cros_ec_dev *dev, int out_bytes,
int in_bytes)
{
+ struct ec_state *ec = &s_state;
+#endif
struct ec_host_request *req_hdr = (struct ec_host_request *)dev->dout;
const void *req_data = req_hdr + 1;
struct ec_host_response *resp_hdr = (struct ec_host_response *)dev->din;
void *resp_data = resp_hdr + 1;
int len;
- len = process_cmd(&s_state, req_hdr, req_data, resp_hdr, resp_data);
+ len = process_cmd(ec, req_hdr, req_data, resp_hdr, resp_data);
if (len < 0)
return len;
@@ -498,7 +507,11 @@ int cros_ec_sandbox_decode_fdt(struct cros_ec_dev *dev, const void *blob)
void cros_ec_check_keyboard(struct cros_ec_dev *dev)
{
+#ifdef CONFIG_DM_CROS_EC
+ struct ec_state *ec = dev_get_priv(dev->dev);
+#else
struct ec_state *ec = &s_state;
+#endif
ulong start;
printf("Press keys for EC to detect on reset (ESC=recovery)...");
@@ -512,6 +525,52 @@ void cros_ec_check_keyboard(struct cros_ec_dev *dev)
}
}
+#ifdef CONFIG_DM_CROS_EC
+int cros_ec_probe(struct udevice *dev)
+{
+ struct ec_state *ec = dev->priv;
+ struct cros_ec_dev *cdev = dev->uclass_priv;
+ const void *blob = gd->fdt_blob;
+ int node;
+ int err;
+
+ memcpy(ec, &s_state, sizeof(*ec));
+ err = cros_ec_decode_ec_flash(blob, dev->of_offset, &ec->ec_config);
+ if (err)
+ return err;
+
+ node = fdtdec_next_compatible(blob, 0, COMPAT_GOOGLE_CROS_EC_KEYB);
+ if (node < 0) {
+ debug("%s: No cros_ec keyboard found\n", __func__);
+ } else if (keyscan_read_fdt_matrix(ec, blob, node)) {
+ debug("%s: Could not read key matrix\n", __func__);
+ return -1;
+ }
+
+ /* If we loaded EC data, check that the length matches */
+ if (ec->flash_data &&
+ ec->flash_data_len != ec->ec_config.flash.length) {
+ printf("EC data length is %x, expected %x, discarding data\n",
+ ec->flash_data_len, ec->ec_config.flash.length);
+ os_free(ec->flash_data);
+ ec->flash_data = NULL;
+ }
+
+ /* Otherwise allocate the memory */
+ if (!ec->flash_data) {
+ ec->flash_data_len = ec->ec_config.flash.length;
+ ec->flash_data = os_malloc(ec->flash_data_len);
+ if (!ec->flash_data)
+ return -ENOMEM;
+ }
+
+ cdev->dev = dev;
+ g_state = ec;
+ return cros_ec_register(dev);
+}
+
+#else
+
/**
* Initialize sandbox EC emulation.
*
@@ -562,3 +621,24 @@ int cros_ec_sandbox_init(struct cros_ec_dev *dev, const void *blob)
return 0;
}
+#endif
+
+#ifdef CONFIG_DM_CROS_EC
+struct dm_cros_ec_ops cros_ec_ops = {
+ .packet = cros_ec_sandbox_packet,
+};
+
+static const struct udevice_id cros_ec_ids[] = {
+ { .compatible = "google,cros-ec" },
+ { }
+};
+
+U_BOOT_DRIVER(cros_ec_sandbox) = {
+ .name = "cros_ec",
+ .id = UCLASS_CROS_EC,
+ .of_match = cros_ec_ids,
+ .probe = cros_ec_probe,
+ .priv_auto_alloc_size = sizeof(struct ec_state),
+ .ops = &cros_ec_ops,
+};
+#endif