diff options
author | Ye Li <ye.li@nxp.com> | 2020-05-18 20:51:21 -0700 |
---|---|---|
committer | Ye Li <ye.li@nxp.com> | 2020-05-19 07:28:35 -0700 |
commit | 81919d9bf0c0f6c02354478480ba2706401ac6c4 (patch) | |
tree | f8bfb18e0e2bce3c78aafff264e9a77df0b74be6 /drivers | |
parent | d1f5a653d2a53d4bf5285ff77284cd8cbf538af9 (diff) |
MLK-24062-2 i2c: lpi2c: Improve the implementation to use private data
Current driver calls the devfdt_get_addr to get the base address
of lpi2c controller in each sub-functions. Since the devfdt_get_addr
accesses the DTB and translate the address, it introduces much
overhead.
Improve the codes to use private variable which has recorded the
base address from probe.
Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
(cherry picked from commit 59f728f4a2bdd6b005f7e9f3a33f84c7bce0f677)
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/i2c/imx_lpi2c.c | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/drivers/i2c/imx_lpi2c.c b/drivers/i2c/imx_lpi2c.c index 7e00059d22..7dcc2acb08 100644 --- a/drivers/i2c/imx_lpi2c.c +++ b/drivers/i2c/imx_lpi2c.c @@ -97,7 +97,8 @@ static int bus_i2c_wait_for_tx_ready(struct imx_lpi2c_reg *regs) static int bus_i2c_send(struct udevice *bus, u8 *txbuf, int len) { - struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)devfdt_get_addr(bus); + struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus); + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base); lpi2c_status_t result = LPI2C_SUCESS; /* empty tx */ @@ -118,7 +119,8 @@ static int bus_i2c_send(struct udevice *bus, u8 *txbuf, int len) static int bus_i2c_receive(struct udevice *bus, u8 *rxbuf, int len) { - struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)devfdt_get_addr(bus); + struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus); + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base); lpi2c_status_t result = LPI2C_SUCESS; u32 val; ulong start_time = get_timer(0); @@ -162,8 +164,8 @@ static int bus_i2c_receive(struct udevice *bus, u8 *rxbuf, int len) static int bus_i2c_start(struct udevice *bus, u8 addr, u8 dir) { lpi2c_status_t result; - struct imx_lpi2c_reg *regs = - (struct imx_lpi2c_reg *)devfdt_get_addr(bus); + struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus); + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base); u32 val; result = imx_lpci2c_check_busy_bus(regs); @@ -199,8 +201,8 @@ static int bus_i2c_start(struct udevice *bus, u8 addr, u8 dir) static int bus_i2c_stop(struct udevice *bus) { lpi2c_status_t result; - struct imx_lpi2c_reg *regs = - (struct imx_lpi2c_reg *)devfdt_get_addr(bus); + struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus); + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base); u32 status; ulong start_time; @@ -271,7 +273,7 @@ u32 __weak imx_get_i2cclk(u32 i2c_num) static int bus_i2c_set_bus_speed(struct udevice *bus, int speed) { struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus); - struct imx_lpi2c_reg *regs; + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base); u32 val; u32 preescale = 0, best_pre = 0, clkhi = 0; u32 best_clkhi = 0, abs_error = 0, rate; @@ -280,8 +282,6 @@ static int bus_i2c_set_bus_speed(struct udevice *bus, int speed) bool mode; int i; - regs = (struct imx_lpi2c_reg *)devfdt_get_addr(bus); - if (IS_ENABLED(CONFIG_CLK)) { clock_rate = clk_get_rate(&i2c_bus->per_clk); if (clock_rate <= 0) { @@ -348,11 +348,11 @@ static int bus_i2c_set_bus_speed(struct udevice *bus, int speed) static int bus_i2c_init(struct udevice *bus, int speed) { - struct imx_lpi2c_reg *regs; u32 val; int ret; - regs = (struct imx_lpi2c_reg *)devfdt_get_addr(bus); + struct imx_lpi2c_bus *i2c_bus = dev_get_priv(bus); + struct imx_lpi2c_reg *regs = (struct imx_lpi2c_reg *)(i2c_bus->base); /* reset peripheral */ writel(LPI2C_MCR_RST_MASK, ®s->mcr); writel(0x0, ®s->mcr); |