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From:   Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
To:     Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc:     Lyude Paul <lyude@redhat.com>,
        "Jason A. Donenfeld" <Jason@zx2c4.com>,
        linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
        Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Subject: [PATCH 6/9] Input: synaptics-rmi4 - make rmi_f34v7_erase_all() use the "erase all" command
Date:   Wed,  8 Jun 2022 14:48:05 +0200
Message-Id: <20220608124808.51402-7-matthias.schiffer@ew.tq-group.com>
In-Reply-To: <20220608124808.51402-1-matthias.schiffer@ew.tq-group.com>
References: <20220608124808.51402-1-matthias.schiffer@ew.tq-group.com>
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A full erase is required to recover from error conditions like "Bad
Partition Table". Various individual partition erase commands can be
(and need to be) omitted, as they will fail until a new partition table
has been written.

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
---
 drivers/input/rmi4/rmi_f34v7.c | 87 +---------------------------------
 1 file changed, 1 insertion(+), 86 deletions(-)

diff --git a/drivers/input/rmi4/rmi_f34v7.c b/drivers/input/rmi4/rmi_f34v7.c
index 9b78f98bb21c..9c1a73611761 100644
--- a/drivers/input/rmi4/rmi_f34v7.c
+++ b/drivers/input/rmi4/rmi_f34v7.c
@@ -608,58 +608,6 @@ static int rmi_f34v7_check_bl_config_size(struct f34_data *f34)
 	return 0;
 }
 
-static int rmi_f34v7_erase_config(struct f34_data *f34)
-{
-	int ret;
-
-	dev_info(&f34->fn->dev, "Erasing config...\n");
-
-	init_completion(&f34->v7.cmd_done);
-
-	switch (f34->v7.config_area) {
-	case v7_UI_CONFIG_AREA:
-		ret = rmi_f34v7_write_command(f34, v7_CMD_ERASE_UI_CONFIG);
-		if (ret < 0)
-			return ret;
-		break;
-	case v7_DP_CONFIG_AREA:
-		ret = rmi_f34v7_write_command(f34, v7_CMD_ERASE_DISP_CONFIG);
-		if (ret < 0)
-			return ret;
-		break;
-	case v7_BL_CONFIG_AREA:
-		ret = rmi_f34v7_write_command(f34, v7_CMD_ERASE_BL_CONFIG);
-		if (ret < 0)
-			return ret;
-		break;
-	}
-
-	ret = rmi_f34v7_check_command_status(f34, F34_ERASE_WAIT_MS);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-static int rmi_f34v7_erase_guest_code(struct f34_data *f34)
-{
-	int ret;
-
-	dev_info(&f34->fn->dev, "Erasing guest code...\n");
-
-	init_completion(&f34->v7.cmd_done);
-
-	ret = rmi_f34v7_write_command(f34, v7_CMD_ERASE_GUEST_CODE);
-	if (ret < 0)
-		return ret;
-
-	ret = rmi_f34v7_check_command_status(f34, F34_ERASE_WAIT_MS);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
 static int rmi_f34v7_erase_all(struct f34_data *f34)
 {
 	int ret;
@@ -668,7 +616,7 @@ static int rmi_f34v7_erase_all(struct f34_data *f34)
 
 	init_completion(&f34->v7.cmd_done);
 
-	ret = rmi_f34v7_write_command(f34, v7_CMD_ERASE_UI_FIRMWARE);
+	ret = rmi_f34v7_write_command(f34, v7_CMD_ERASE_ALL);
 	if (ret < 0)
 		return ret;
 
@@ -676,24 +624,6 @@ static int rmi_f34v7_erase_all(struct f34_data *f34)
 	if (ret < 0)
 		return ret;
 
-	f34->v7.config_area = v7_UI_CONFIG_AREA;
-	ret = rmi_f34v7_erase_config(f34);
-	if (ret < 0)
-		return ret;
-
-	if (f34->v7.has_display_cfg) {
-		f34->v7.config_area = v7_DP_CONFIG_AREA;
-		ret = rmi_f34v7_erase_config(f34);
-		if (ret < 0)
-			return ret;
-	}
-
-	if (f34->v7.has_guest_code) {
-		ret = rmi_f34v7_erase_guest_code(f34);
-		if (ret < 0)
-			return ret;
-	}
-
 	return 0;
 }
 
@@ -897,17 +827,6 @@ static int rmi_f34v7_write_flash_config(struct f34_data *f34)
 
 	init_completion(&f34->v7.cmd_done);
 
-	ret = rmi_f34v7_write_command(f34, v7_CMD_ERASE_FLASH_CONFIG);
-	if (ret < 0)
-		return ret;
-
-	rmi_dbg(RMI_DEBUG_FN, &f34->fn->dev,
-		"%s: Erase flash config command written\n", __func__);
-
-	ret = rmi_f34v7_check_command_status(f34, F34_WRITE_WAIT_MS);
-	if (ret < 0)
-		return ret;
-
 	ret = rmi_f34v7_write_config(f34);
 	if (ret < 0)
 		return ret;
@@ -937,10 +856,6 @@ static int rmi_f34v7_write_partition_table(struct f34_data *f34)
 	if (ret < 0)
 		return ret;
 
-	ret = rmi_f34v7_erase_config(f34);
-	if (ret < 0)
-		return ret;
-
 	ret = rmi_f34v7_write_flash_config(f34);
 	if (ret < 0)
 		return ret;
-- 
2.25.1