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Diffstat (limited to 'target/linux/mediatek/patches/0031-I2C-mediatek-Add-driver-for-MediaTek-MT8173-I2C-cont.patch')
-rw-r--r--target/linux/mediatek/patches/0031-I2C-mediatek-Add-driver-for-MediaTek-MT8173-I2C-cont.patch239
1 files changed, 0 insertions, 239 deletions
diff --git a/target/linux/mediatek/patches/0031-I2C-mediatek-Add-driver-for-MediaTek-MT8173-I2C-cont.patch b/target/linux/mediatek/patches/0031-I2C-mediatek-Add-driver-for-MediaTek-MT8173-I2C-cont.patch
deleted file mode 100644
index af9673de4b..0000000000
--- a/target/linux/mediatek/patches/0031-I2C-mediatek-Add-driver-for-MediaTek-MT8173-I2C-cont.patch
+++ /dev/null
@@ -1,239 +0,0 @@
-From 5f33206ebe4fb4a2cc8634f29c3e3c9bc01e3416 Mon Sep 17 00:00:00 2001
-From: Eddie Huang <eddie.huang@mediatek.com>
-Date: Wed, 6 May 2015 16:37:07 +0800
-Subject: [PATCH 31/76] I2C: mediatek: Add driver for MediaTek MT8173 I2C
- controller
-
-Add mediatek MT8173 I2C controller driver. Compare to I2C controller
-of earlier mediatek SoC, MT8173 fix write-then-read limitation, and
-also increase message size to 64kb.
-
-Signed-off-by: Xudong Chen <xudong.chen@mediatek.com>
-Signed-off-by: Liguo Zhang <liguo.zhang@mediatek.com>
-Signed-off-by: Eddie Huang <eddie.huang@mediatek.com>
----
- drivers/i2c/busses/i2c-mt65xx.c | 104 ++++++++++++++++++++++++++++-----------
- 1 file changed, 76 insertions(+), 28 deletions(-)
-
---- a/drivers/i2c/busses/i2c-mt65xx.c
-+++ b/drivers/i2c/busses/i2c-mt65xx.c
-@@ -33,10 +33,13 @@
- #include <linux/clk.h>
- #include <linux/completion.h>
-
-+#define I2C_RS_TRANSFER (1 << 4)
- #define I2C_HS_NACKERR (1 << 2)
- #define I2C_ACKERR (1 << 1)
- #define I2C_TRANSAC_COMP (1 << 0)
- #define I2C_TRANSAC_START (1 << 0)
-+#define I2C_RS_MUL_CNFG (1 << 15)
-+#define I2C_RS_MUL_TRIG (1 << 14)
- #define I2C_TIMING_STEP_DIV_MASK (0x3f << 0)
- #define I2C_TIMING_SAMPLE_COUNT_MASK (0x7 << 0)
- #define I2C_TIMING_SAMPLE_DIV_MASK (0x7 << 8)
-@@ -67,6 +70,9 @@
- #define MAX_MSG_NUM_MT6577 1
- #define MAX_DMA_TRANS_SIZE_MT6577 255
- #define MAX_WRRD_TRANS_SIZE_MT6577 31
-+#define MAX_MSG_NUM_MT8173 65535
-+#define MAX_DMA_TRANS_SIZE_MT8173 65535
-+#define MAX_WRRD_TRANS_SIZE_MT8173 65535
- #define MAX_SAMPLE_CNT_DIV 8
- #define MAX_STEP_CNT_DIV 64
- #define MAX_HS_STEP_CNT_DIV 8
-@@ -139,6 +145,7 @@ struct mtk_i2c_compatible {
- const struct i2c_adapter_quirks *quirks;
- unsigned char pmic_i2c;
- unsigned char dcm;
-+ unsigned char auto_restart;
- };
-
- struct mtk_i2c {
-@@ -172,21 +179,39 @@ static const struct i2c_adapter_quirks m
- .max_comb_2nd_msg_len = MAX_WRRD_TRANS_SIZE_MT6577,
- };
-
-+static const struct i2c_adapter_quirks mt8173_i2c_quirks = {
-+ .max_num_msgs = MAX_MSG_NUM_MT8173,
-+ .max_write_len = MAX_DMA_TRANS_SIZE_MT8173,
-+ .max_read_len = MAX_DMA_TRANS_SIZE_MT8173,
-+ .max_comb_1st_msg_len = MAX_DMA_TRANS_SIZE_MT8173,
-+ .max_comb_2nd_msg_len = MAX_WRRD_TRANS_SIZE_MT8173,
-+};
-+
- static const struct mtk_i2c_compatible mt6577_compat = {
- .quirks = &mt6577_i2c_quirks,
- .pmic_i2c = 0,
- .dcm = 1,
-+ .auto_restart = 0,
- };
-
- static const struct mtk_i2c_compatible mt6589_compat = {
- .quirks = &mt6577_i2c_quirks,
- .pmic_i2c = 1,
- .dcm = 0,
-+ .auto_restart = 0,
-+};
-+
-+static const struct mtk_i2c_compatible mt8173_compat = {
-+ .quirks = &mt8173_i2c_quirks,
-+ .pmic_i2c = 0,
-+ .dcm = 1,
-+ .auto_restart = 1,
- };
-
- static const struct of_device_id mtk_i2c_of_match[] = {
- { .compatible = "mediatek,mt6577-i2c", .data = (void *)&mt6577_compat },
- { .compatible = "mediatek,mt6589-i2c", .data = (void *)&mt6589_compat },
-+ { .compatible = "mediatek,mt8173-i2c", .data = (void *)&mt8173_compat },
- {}
- };
- MODULE_DEVICE_TABLE(of, mtk_i2c_of_match);
-@@ -343,9 +368,11 @@ static int mtk_i2c_set_speed(struct mtk_
- return 0;
- }
-
--static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs)
-+static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs,
-+ int num, int left_num)
- {
- u16 addr_reg;
-+ u16 start_reg;
- u16 control_reg;
- dma_addr_t rpaddr = 0;
- dma_addr_t wpaddr = 0;
-@@ -361,6 +388,8 @@ static int mtk_i2c_do_transfer(struct mt
- control_reg |= I2C_CONTROL_RS;
- if (i2c->op == I2C_MASTER_WRRD)
- control_reg |= I2C_CONTROL_DIR_CHANGE | I2C_CONTROL_RS;
-+ if (left_num >= 1)
-+ control_reg |= I2C_CONTROL_RS;
- mtk_i2c_writew(control_reg, i2c, OFFSET_CONTROL);
-
- /* set start condition */
-@@ -375,13 +404,13 @@ static int mtk_i2c_do_transfer(struct mt
- mtk_i2c_writew(addr_reg, i2c, OFFSET_SLAVE_ADDR);
-
- /* Clear interrupt status */
-- mtk_i2c_writew(I2C_HS_NACKERR | I2C_ACKERR | I2C_TRANSAC_COMP,
-- i2c, OFFSET_INTR_STAT);
-+ mtk_i2c_writew(I2C_RS_TRANSFER | I2C_HS_NACKERR | I2C_ACKERR
-+ | I2C_TRANSAC_COMP, i2c, OFFSET_INTR_STAT);
- mtk_i2c_writew(I2C_FIFO_ADDR_CLR, i2c, OFFSET_FIFO_ADDR_CLR);
-
- /* Enable interrupt */
-- mtk_i2c_writew(I2C_HS_NACKERR | I2C_ACKERR | I2C_TRANSAC_COMP,
-- i2c, OFFSET_INTR_MASK);
-+ mtk_i2c_writew(I2C_RS_TRANSFER | I2C_HS_NACKERR | I2C_ACKERR
-+ | I2C_TRANSAC_COMP, i2c, OFFSET_INTR_MASK);
-
- /* Set transfer and transaction len */
- if (i2c->op == I2C_MASTER_WRRD) {
-@@ -390,7 +419,7 @@ static int mtk_i2c_do_transfer(struct mt
- mtk_i2c_writew(I2C_WRRD_TRANAC_VALUE, i2c, OFFSET_TRANSAC_LEN);
- } else {
- mtk_i2c_writew(msgs->len, i2c, OFFSET_TRANSFER_LEN);
-- mtk_i2c_writew(I2C_RD_TRANAC_VALUE, i2c, OFFSET_TRANSAC_LEN);
-+ mtk_i2c_writew(num, i2c, OFFSET_TRANSAC_LEN);
- }
-
- /* Prepare buffer data to start transfer */
-@@ -436,13 +465,23 @@ static int mtk_i2c_do_transfer(struct mt
- /* flush before sending start */
- mb();
- mtk_i2c_writel_dma(I2C_DMA_START_EN, i2c, OFFSET_EN);
-- mtk_i2c_writew(I2C_TRANSAC_START, i2c, OFFSET_START);
-+
-+ if (!i2c->dev_comp->auto_restart) {
-+ start_reg = I2C_TRANSAC_START;
-+ } else {
-+ if (left_num >= 1)
-+ start_reg = I2C_TRANSAC_START | I2C_RS_MUL_CNFG
-+ | I2C_RS_MUL_TRIG;
-+ else
-+ start_reg = I2C_TRANSAC_START | I2C_RS_MUL_TRIG;
-+ }
-+ mtk_i2c_writew(start_reg, i2c, OFFSET_START);
-
- ret = wait_for_completion_timeout(&i2c->msg_complete,
- i2c->adap.timeout);
-
- /* Clear interrupt mask */
-- mtk_i2c_writew(~(I2C_HS_NACKERR | I2C_ACKERR
-+ mtk_i2c_writew(~(I2C_RS_TRANSFER | I2C_HS_NACKERR | I2C_ACKERR
- | I2C_TRANSAC_COMP), i2c, OFFSET_INTR_MASK);
-
- if (i2c->op == I2C_MASTER_WR) {
-@@ -472,6 +511,10 @@ static int mtk_i2c_do_transfer(struct mt
- return -EREMOTEIO;
- }
-
-+ if (i2c->irq_stat & I2C_RS_TRANSFER)
-+ dev_dbg(i2c->dev, "addr: %x, restart transfer interrupt.\n",
-+ msgs->addr);
-+
- return 0;
- }
-
-@@ -486,28 +529,33 @@ static int mtk_i2c_transfer(struct i2c_a
- if (ret)
- return ret;
-
-- if (msgs->buf == NULL) {
-- dev_dbg(i2c->dev, "data buffer is NULL.\n");
-- ret = -EINVAL;
-- goto err_exit;
-- }
--
-- if (msgs->flags & I2C_M_RD)
-- i2c->op = I2C_MASTER_RD;
-- else
-- i2c->op = I2C_MASTER_WR;
-+ while (left_num--) {
-+ if (msgs->buf == NULL) {
-+ dev_dbg(i2c->dev, "data buffer is NULL.\n");
-+ ret = -EINVAL;
-+ goto err_exit;
-+ }
-
-- if (num > 1) {
-- /* combined two messages into one transaction */
-- i2c->op = I2C_MASTER_WRRD;
-- left_num--;
-- }
-+ if (msgs->flags & I2C_M_RD)
-+ i2c->op = I2C_MASTER_RD;
-+ else
-+ i2c->op = I2C_MASTER_WR;
-+
-+ if (!i2c->dev_comp->auto_restart) {
-+ if (num > 1) {
-+ /* combined two messages into one transaction */
-+ i2c->op = I2C_MASTER_WRRD;
-+ left_num--;
-+ }
-+ }
-
-- /* always use DMA mode. */
-- ret = mtk_i2c_do_transfer(i2c, msgs);
-- if (ret < 0)
-- goto err_exit;
-+ /* always use DMA mode. */
-+ ret = mtk_i2c_do_transfer(i2c, msgs, num, left_num);
-+ if (ret < 0)
-+ goto err_exit;
-
-+ msgs++;
-+ }
- /* the return value is number of executed messages */
- ret = num;
-
-@@ -521,7 +569,7 @@ static irqreturn_t mtk_i2c_irq(int irqno
- struct mtk_i2c *i2c = dev_id;
-
- i2c->irq_stat = mtk_i2c_readw(i2c, OFFSET_INTR_STAT);
-- mtk_i2c_writew(I2C_HS_NACKERR | I2C_ACKERR
-+ mtk_i2c_writew(I2C_RS_TRANSFER | I2C_HS_NACKERR | I2C_ACKERR
- | I2C_TRANSAC_COMP, i2c, OFFSET_INTR_STAT);
-
- complete(&i2c->msg_complete);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 15:24:13 +0000